阅读说明：本技术 用于制备用于吸收制品的三维基底的方法和工具 (It is used to prepare the Method and kit for of the three-dimensional substrates for absorbent article ) 是由 J.M.特林豪斯 H.A.杰克尔斯 G.艾尔德姆 U.施耐德 于 2018-02-12 设计创作，主要内容包括：本发明提供了用于制备三维基底和/或有孔基底的方法和工具。所述三维基底和/或有孔基底可用于诸如尿布和裤的吸收制品中。所述方法和工具可用于吸收制品生产线上。(The present invention provides be used to prepare three-dimensional substrates and/or have the Method and kit for of hole substrate.The three-dimensional substrates and/or there is hole substrate to can be used in the absorbent article of such as diaper and trousers.The method and tool can be used on absorbent article production line.)

1. a kind of prepare method that is three-dimensional, having hole substrate on absorbent article production line, which comprises

Precursor substrate is transmitted in a machine direction on the absorbent article production line；

The first roller for having first rotation is provided；

Second roller with the second rotation axis is provided, wherein the first rotation and second rotation axis are big each other Cause positions in parallel, to form roll gap between first roller and second roller；

Wherein first roller includes:

First radially-outer surface；

Multiple first protrusions, the multiple first protrusion at least partly extend outwardly from first radially-outer surface, wherein The multiple first protrusion is configured to form hole in the precursor substrate；

Multiple first recessed portions being limited in first radially-outer surface；

First distal part of at least some of the multiple first protrusion forms elongate aperture structure, elongated opens wherein described Pore structure includes side wall；And

At least some of first distal end in the multiple first protrusion forms point；

Wherein the multiple first protrusion respectively has the first central longitudinal axis for extending through the point；

Wherein the part of the side wall has in the range of about 5 degree to about 40 degree, more preferably at about 10 degree to about 30 degree The first angle relative to first central longitudinal axis in range；

Wherein second roller includes:

Second radially-outer surface；

Multiple second protrusions, the multiple second protrusion at least partly extend outwardly from second radially-outer surface, wherein The multiple second protrusion is configured to form three-D elements in the precursor substrate, and wherein the multiple second protrusion Including the second distal part and the second distal end；

Multiple second recessed portions being limited in second radially-outer surface；And

Wherein at least some of described second distal part includes the shoulder being located among base portion and the distal end；

Wherein the multiple second protrusion has the second central longitudinal axis；

Wherein the part of the shoulder has in the range of about 2 degree to about 25 degree, more preferably in about 3 degree to about 20 degree of model Enclose the interior second angle relative to second central longitudinal axis；

Rotate first roller in a first direction around the first rotation；

Rotate second roller in second, opposite direction around second rotation axis；

Intermesh ground in the roll gap in the part of the part and the multiple second recessed portion that make the multiple first protrusion Engagement；

Intermesh ground in the roll gap in the part of the part and the multiple first recessed portion that make the multiple second protrusion Engagement；

The precursor substrate is transported through into the roll gap；And

It is formed in the roll gap:

Using described at least some in described at least some and the multiple second recessed portions in the multiple first protrusion The hole in the precursor substrate；

Using described at least some in described at least some and the multiple first recessed portions in the multiple second protrusion The precursor substrate in the region in no hole in three-D elements；And

It is formed in the constricted zone of the precursor substrate among the part of the side wall and the part of the shoulder, wherein described Constricted zone is formed around the periphery in the hole or is formed in the three-D elements.

2. according to the method described in claim 1, the method includes compressing the part of the part of the side wall and the shoulder The part of the intermediate three-D elements.

3. method according to claim 1 or 2, wherein second distal end formed it is flat or substantially flat Surface.

4. method according to any of the preceding claims, wherein the side wall surrounds first center longitudinal axis Line, and wherein the shoulder surrounds second central longitudinal axis.

5. according to the method described in claim 1, wherein described at least some including having edge in the multiple first protrusion Perpendicular to the machine direction direction interception the first width base portion, wherein in the multiple second protrusion it is described at least Some base portions have along perpendicular to the machine direction direction interception the second width, wherein described second it is of different size in First width, wherein described at least some with along perpendicular to the machine direction in the multiple first recessed portion The third width of direction interception, wherein described at least some with along perpendicular to the machine in the multiple second recessed portion 4th width of the direction interception in direction, and wherein the third is of different size in the 4th width.

6. method according to any of the preceding claims, which comprises

The precursor substrate is heated before the precursor substrate is transmitted through the roll gap；And

In the cooling precursor substrate in the roll gap downstream.

7. method according to any of the preceding claims, which comprises

Heat first roller and/or second roller；And

In the cooling precursor substrate in the roll gap downstream.

8. method according to any of the preceding claims, the method includes only making the central bars of the precursor substrate Band with it is the multiple first protrusion part, the multiple first recessed portion part, it is the multiple second protrusion part and The part of the multiple second recessed portion contacts in the roll gap, wherein the center strip is to connect in the machine direction Continuous.

9. according to the method described in claim 8, the method includes only in the part on the outside of the center strip in transverse direction Side is pulled up the precursor substrate.

10. method according to any of the preceding claims, the method includes under the precursor substrate or it The second precursor substrate contiguously above but with the precursor substrate is transmitted in the machine direction, wherein the precursor substrate has Along the first width of the direction interception perpendicular to the machine direction, wherein the second precursor substrate has along perpendicular to described Second width of the direction interception of machine direction, wherein first width is greater than second width, and wherein institute Stating precursor substrate includes the material different from the second precursor substrate.

11. according to the method described in claim 10, the method includes substantially only in the precursor substrate and described second Precursor substrate make in the case where being overlapped the precursor substrate and the second precursor substrate and the multiple first protrusion part, The part of the part of the multiple first recessed portion, the part of the multiple second protrusion and the multiple second recessed portion is in institute It states in roll gap and contacts.

12. method according to any of the preceding claims, the method includes logical by transmission in the precursor substrate It crosses the roll gap and the precursor substrate is cut into the spacing for being used for absorbent article top flat later.

13. according to the method for claim 11, the method includes being transmitted through the roll gap in the precursor substrate The precursor substrate and the second precursor substrate are cut into the spacing for being used for absorbent article top flat later.

14. according to the method for claim 11, the method includes the precursor substrate not with the second precursor base Bottom stretches the precursor substrate in the case where being overlapped in a lateral direction.

15. method according to any of the preceding claims, which comprises

Before the precursor substrate is transported through the roll gap, the precursor substrate is at least partly wrapped in described Around one roller；And

After the precursor substrate is transported through the roll gap, the precursor substrate is at least partly wrapped in described Around two rollers.

Technical field

This disclosure relates to be used to prepare the Method and kit for of three-dimensional substrates, and preparation is more particularly related to for inhaling Receive the Method and kit for of the three-dimensional substrates of product.

Background technique

Three-dimensional substrates serve many purposes in various industries.It is to absorb to one of interested industry of three-dimensional substrates Product industry.The production of the manufacture of absorbent article industry such as diaper, trousers, sanitary napkin, tampon and adult incontinence pants, diaper and product Product.These " absorbent articles " may desirably comprise for example one or more three-dimensional substrates as top flat, acquisition layer, Distribution Layer, outside Cover material and/or other component.Three-dimensional refers to the three-D elements of the general plane material with more than one standard Substrate.For example, three-D elements for example can extend 0.5mm to 5mm or 1mm to 5mm from the flat surfaces of substrate.For absorbent article In three-dimensional substrates manufactured usually at first position, and be shipped to second, different location then to be integrated to absorbent article In.First position is usually three-dimensional substrates manufacturer or non-woven material or thin film fabrication quotient, and second, different location is logical It is often absorbent article manufacturer.The first problem generated in these cases is that three-dimensional substrates need at first position closely Winding, and then it is shipped to second, different location.This is typically due to them and lacks receiving compression caused by winding and tensioning Ability and reduce the three-dimensionality of substrate.The Second Problem generated in these cases be substrate need to unwind and second, Different location is fed in absorbent article production line.This is typically due to them and lacks receiving compression caused by unwinding and tensioning Ability and further decrease the three-dimensionality of substrate.Finally, the close package commonly used in absorbent article further decreases three-dimensional Property.It is desirable that the reliable side for the three-dimensional substrates of the compression of production reduction three-dimensional feature and deformation on absorbent article production line Method and tool.

Summary of the invention

The disclosure provides the Method and kit for for producing three-dimensional substrates on absorbent article production line.By in the suction It receives and forms the three-dimensional substrates on production of articles line, eliminate winding, unwinding and shipment.In addition, the method and work of the disclosure Tool provides for the three-dimensional substrates or even at least reduces during the compression packing of the absorbent article three-dimensional feature structure compresses Ability.It can be by providing constricted zone or compact area at least some of described three-D elements in the three-dimensional substrates To realize the compression resistance.The constricted zone or compact area can be formed around the part on hole periphery or hole periphery, so that described Stablized with linear speed in hole.

Detailed description of the invention

Although this specification is related to forming the claim of subject of the present invention to particularly point out and be distinctly claimed Book is drawn a conclusion, it is believed that the disclosure may be better understood by following description with reference to the accompanying drawings, label is used in the accompanying drawings Indicate substantially the same element, and wherein:

Fig. 1 is the view of a pair of rolls, has the substrate transmitted therebetween；

Fig. 2 is the top view of the sample portion of first roller of a pair of rolls of Fig. 1；

Fig. 2A is the cross-sectional view along the line 2A-2A of Fig. 2 the first roller intercepted；

Fig. 3 is the top view of the sample portion of second roller of a pair of rolls of Fig. 1；

Fig. 3 A is the cross-sectional view along the line 3A-3A of Fig. 3 the second roller intercepted；

Fig. 4 is the simplified schematic with a part of the first roller of a part of intermeshing Fig. 2A of the second roller of Fig. 3 A Cross-sectional view；

Fig. 4 A is the exploded view of the region 4A in Fig. 4；

Fig. 5 is the cross-sectional view of a part of the exemplary bumps of the second roller；

Fig. 6 is another cross-sectional view of a part of the exemplary bumps of the second roller；

Fig. 7 A-7G is the exemplary top view of the distal end portion of the protrusion of the second roller；

Fig. 8 A-8F is the exemplary top view of the part of the protrusion of the first roller；

Fig. 9 is the top view of the sample portion of first roller of a pair of rolls of Fig. 1；

Fig. 9 A is the cross-sectional view along the line 9A-9A of Fig. 9 the first roller intercepted；

Figure 10 is the top view of the sample portion of second roller of a pair of rolls of Fig. 1；

Figure 10 A is the cross-sectional view along the line 10A-10A of Figure 10 the second roller intercepted；

Figure 11 is to illustrate with simplifying for a part of the first roller of a part of intermeshing Fig. 9 A of the second roller of Figure 10 A Property cross-sectional view；

Figure 12 is the top view of the sample portion of first roller of a pair of rolls of Fig. 1；

Figure 12 A is the cross-sectional view along the line 12A-12A of Figure 12 the first roller intercepted；

Figure 13 is the top view of the sample portion of second roller of a pair of rolls of Fig. 1；

Figure 13 A is the cross-sectional view along the line 13A-13A of Figure 13 the second roller intercepted；

Figure 14 is that the simplification with a part of the first roller of a part of intermeshing Figure 12 A of the second roller of Figure 13 A is shown Meaning property cross-sectional view；

Figure 15 is the top view of the sample portion of first roller of a pair of rolls of Fig. 1；

Figure 15 A is the cross-sectional view along the line 15A-15A of Figure 15 the first roller intercepted；

Figure 16 is the top view of the sample portion of second roller of a pair of rolls of Fig. 1；

Figure 16 A is the cross-sectional view along the line 16A-16A of Figure 16 the second roller intercepted；

Figure 17 is that the simplification with a part of the first roller of a part of intermeshing Figure 15 A of the second roller of Figure 16 A is shown Meaning property cross-sectional view；

Figure 18 is a part of the first roller and a part of intermeshing cross-sectional view of the second roller；

Figure 18 A is the profile of the details 18A of Figure 18；

Figure 19 is the exemplary precursors base that can be transmitted by the roll gap being formed between the first roller of the disclosure and the second roller The top view at bottom；

Figure 20 is the cross-sectional view along the line 20-20 of Figure 19 precursor substrate intercepted；

Figure 21 is the cross-sectional view along the line 21-21 of Figure 19 precursor substrate intercepted；

Figure 22 is after transmitting by roll gap and to have the exemplary of the center longitudinal band including three-D elements and hole The top view of substrate；

Figure 23 shows the first roller and the second roller that can form the substrate with center longitudinal band as shown in figure 22；

Figure 24 is the perspective view of two draw rolls of the side of the substrate for tensile diagram 22；

Figure 25 is the cross-sectional view of the ridge and groove in each of roller of Figure 24；

Figure 26 is the cross-sectional view for forming the Alternative exemplary roller in three-D elements and hole in precursor substrate；

Figure 27 is the cross-sectional view of the three-dimensional substrates in the hole with the roller generation by Figure 26；

Figure 28 is the schematic diagram to form three roller techniques of substrate, which has the first substrate with three-D elements and hole Only with porose second substantially planar substrates；

Figure 29 is the cross-sectional view intercepted along the details 29 of Figure 28；

Figure 30 is the top perspective that the exemplary three dimensional generated by the first roller of Fig. 1 and the second roller 8,10 has hole substrate；

Figure 31 is the exemplary three dimensional generated by the first roller of Fig. 1 and the second roller 8,10, the top view for having hole substrate；

Figure 32 is the exemplary three dimensional of Figure 31, the rearview for having hole substrate；

Figure 33 is across the exemplary three dimensional of Figure 31, the cross-sectional view for having hole substrate to intercept；

Figure 34 is that the simplified schematic sectional illustrations of roller 8,10 illustrate, which is mainly configured in precursor substrate Three-D elements and constricted zone are formed in 4 rather than hole；And

Figure 35 is that the simplified schematic sectional illustrations of roller 8,10 illustrate, which is mainly configured in precursor substrate Hole and constricted zone are formed in 4 rather than three-D elements or are more restricted compared with the roller 8,10 of Fig. 4 (for example, more low height) Three-dimensional feature structure.

Figure 36 is that the simplified schematic sectional illustrations of roller 8,10 illustrate, which is mainly configured in precursor substrate Three-D elements and constricted zone are formed in 4 rather than hole；

Figure 37 is that the simplified schematic sectional illustrations of roller 8,10 illustrate, which is mainly configured in precursor substrate Hole and constricted zone are formed in 4 rather than three-D elements or are more restricted compared with the roller 8,10 of Fig. 4 and Figure 35 (for example, smaller Three-dimensional feature structure highly)；

Figure 38 is that the simplified schematic sectional illustrations of roller 8,10 illustrate, which is configured in precursor substrate 4 It forms hole and three-D elements but is not constricted zone；

Figure 39 is the simplified schematic cross-sectional view with a part of a part of intermeshing first roller of the second roller；

Figure 39 A is the exploded view of the region 39A in Figure 39；

Figure 40 is the top view of a part of exemplary first roller 8；

Figure 40 A is the cross-sectional view along a part of the line 40A-40A of Figure 40 the first roller 8 intercepted；

Figure 41 is the top view of a part of exemplary second roller 10；

Figure 41 A is the cross-sectional view along a part of the line 41A-41A of Figure 41 the second roller 10 intercepted；

Figure 42 is showing by the package configuration of (one or more) substrate of various first rollers and the second roller of the disclosure Example；And

Figure 43 is to wrap up the another of configuration by (one or more) substrates of various first rollers and the second roller of the disclosure One example.

Specific embodiment

The various non-restrictive forms that the disclosure will now be described are disclosed herein for making to understand on the whole It is ready for use on structural principle, function, manufacture and the purposes of the Method and kit for of the three-dimensional substrates of absorbent article.These non-limiting shapes One or more examples of formula are illustrated in attached drawing.It will be understood by those skilled in the art that specific described herein And it is used to prepare the Method and kit fors of the three-dimensional substrates for absorbent article shown by attached drawing and is non-limited example shape Formula, and the range of the various non-restrictive forms of the disclosure is limited only by the appended claims.In conjunction with a non-restrictive form Shown or described feature can be combined with the feature of other non-restrictive forms.Such modifications and variations are intended to be included in this public affairs In the range of opening.

The disclosure relates in part to the Method and kit for for preparing three-dimensional substrates on absorbent article production line.Three Wikis Bottom can be porose.Referring to Fig. 1, can be formed between the first roller 8 and the second roller 10 by transporting through precursor substrate 4 Roll gap 6 forms three-dimensional substrates or three-dimensional apertured substrate 2.At least part of first roller 8 can be at least one of the second roller 10 Divide and engages with intermeshing.It does not intermesh the first roller of contact and the part of the second roller can be to be in rolling contact or do not connect Touching.The details of first roller and the second roller 8,10 will be shown in the figure below.It can heating precursors substrate 4, the first roller 8, the second roller 10 and/or three-dimensional substrates or three-dimensional apertured substrate 2, more held with promoting three-D elements to preferably keep in substrate 2 and allowing It changes places to form three-D elements and hole.

Precursor substrate 4 can have thermoplastic component (for example, one or more films and/or one or more non-woven materials Material).Precursor substrate 4 can have any appropriate number of layer, such as one, two or three.Any or all of wrapping in layer Include one or more non-woven materials (or non-woven fibre), film, coform material, cellulosic material (or cellulose fiber Dimension), cotton material (or cotton fiber), natural material (or natural fiber) or their combination.For example, there are two precursor substrate can have Or more non-woven material layer, one or more film layer and one or more non-woven material layers and/or two or more A film layer.Various layers can be of the same size, shape, density, base weight and composition, or can have different sizes, shape Shape, density, base weight and composition will such as discuss in further detail below.

Referring again to Fig. 1, the first roller and the second roller 8 and 10 can be configured to only form three-D elements in precursor substrate 4, Or it can be configured to form three-D elements and hole in precursor substrate 4 to form three-dimensional, have hole substrate 2.First roller 8 can by Side indicated by arrow on first roller 8 is rotated upward around first rotation 12, and the second roller 10 can be by the second roller Side indicated by arrow on 10 is rotated upward around the second rotation axis 14.In other cases, for example, the first roller 8 can be It is rotated on the direction opposite with the arrow on the first roller 8, and the second roller 10 can be in the side opposite with the arrow on the second roller 10 Rotation upwards.First roller 8 may include the first radially-outer surface 16, and the second roller 10 may include the second radially-outer surface 18.The One rotation axis 12 and the second rotation axis 14 can position generally parallel to each other, with the shape between the first roller and the second roller 8,10 At roll gap 6.Precursor substrate 4 can transport through roll gap 6 on absorbent article production line on machine direction (arrow MD).

Fig. 2 is the front view of exemplary a part of the first roller 8.Fig. 2A is the cross-sectional view of Fig. 2 of 2A-2A interception along the line. First roller 8 may include from the first radially-outer surface 16 at least partly outwardly extending multiple first protrusions 20.Multiple first is convex Playing 20 can be configured to form or be at least partially formed hole in precursor substrate 4.In some cases, the distal end portion of protrusion 20 Portion can be rounded, only to form three-D elements in precursor substrate 4 rather than hole.First roller 8, which may also include, is limited to the first diameter Multiple first recessed portions 22 in exterior surface 16.At least some of multiple first protrusions 20 largely or entirely may include First distal part 24, first distal part include elongate aperture structure.First distal end 26 of the first distal part 24 It can be formed a little.Term " point " as used herein can at least partly cavetto, but still precursor substrate can be pierced through.Term " point " It further include wherein selling the configuration extended from distal end, wherein pin-shaped pore-forming.First distal part 24 may include one or more Side wall 28.At least some of multiple first protrusions 20 largely or entirely can respectively include the first base portion 30.Multiple first is convex Playing 20 may include and the central longitudinal axis 32 put or the first distal end 26 intersects.Base portion 30 may include sidewall 34, the side wall It can be parallel to or be arranged essentially parallel to the extension of the first central longitudinal axis 32.In other cases, sidewall 34 can be at the first center Extend in +/- 25 degree of longitudinal axis 32.In some cases, sidewall 34 can also be bowed or have arcuate section.

Referring still to Fig. 2 and Fig. 2A, the first distal part 24 can form cone or pyramidal structure.In such cases, One distal part 24 can have the single side wall 28 around the first central longitudinal axis 32.In other cases, the first distal portion Divide 24 can form other polygonal shapes for wherein forming two or more side walls 28.For example, the first distal part 24 can shape At tool, there are three the tetrahedral structures of independent side wall.In either case, (one or more) side wall 28 can not be around the One central longitudinal axis 32 is completely continuous, such as will be discussed in further detail below.Side wall or wall 28, either continuously still It is discontinuous, can have about 5 degree to about 50 degree, about 10 degree to about 30 degree, about 15 degree to about 25 degree, about 18 degree, about 20 degree extremely About 80 degree, about 30 degree to about 70 degree, about 35 degree to about 65 degree, about 40 degree to about 60 degree, about 40 degree to about 55 degree or about 40 degree extremely The first angle relative to the first central longitudinal axis 32 in the range of about 50 degree is specifically set forth in specified range and is formed in All 0.1 degree of increments in all ranges therein or to be formed.Referring to fig. 2, for example, the protrusion of multiple first protrusions 20 At least some of can be surrounded by four recessed portions of multiple first recessed portions 22.Referring again to Fig. 2, for example, multiple first is recessed At least some of recessed portion of concave portion 22 can be surrounded by four protrusions of multiple first protrusions 20.

A referring to fig. 2, at least some of base portion 30 of multiple first protrusions 20 or can all have along being roughly parallel to the First width W1 of the direction interception of one rotation axis 12 (or perpendicular to first central longitudinal axis 32).Adjacent with base portion 30 Region at least some of recessed portion 22 can have the along the direction interception for being roughly parallel to first rotation 12 Two width W2.First width W1 can be identical to, be different from, being less than or greater than the second width W2.

Fig. 3 is the front view of exemplary a part of the second roller 10.Fig. 3 A is the cross-sectional view of Fig. 3 of 3A-3A interception along the line. Second roller 10 may include from the second radially-outer surface 18 at least partly outwardly extending multiple second protrusions 36.Multiple second is convex 36 are played to be configured to form three-D elements in precursor substrate 4.Multiple second protrusions 36, which have, is limited to the second radially-outer surface Multiple second recessed portions 38 in 18.At least some of multiple second protrusions 36 largely or entirely include the second distal portion Points 40 and second distal end 42.Multiple second protrusions 36 include base portion 44.At least some of multiple second protrusions 36, big portion Point or all respectively include the shoulder 46 being located among base portion 44 and the second distal end 42.Multiple second protrusions 36 are respectively wrapped Include the central longitudinal axis 48 upwardly extended in the side for being approximately perpendicular to the second rotation axis 14.Relative to the second center longitudinal axis Line 48, shoulder 46 can have about 2 degree to about 40 degree, about 3 degree to about 30 degree, about 5 degree to about 20 degree, about 3 degree to about 15 degree, about 10 degree, about 20 degree to about 80 degree, about 30 degree to about 70 degree, about 35 degree to about 65 degree, about 40 degree to about 60 degree, about 40 degree to about 55 Degree or about 40 degree to about 50 degree in the range of the second angle relative to the second central longitudinal axis 48, be specifically set forth in finger Determine all 0.1 degree of increments in range and all ranges formed therein or to be formed.The of first distal part 24 One angle can be identical or different with the second angle of shoulder 46.For example, first angle can be at about +/- 0.01 degree of second angle extremely Within about 15 degree, or within about +/- 0.01 degree to about 10 degree, specifically include specified range and it is formed therein or from And all 0.001 degree of increments in all ranges formed.For another example, first angle can second angle +/- 15,14,13, 12, within 11,10,9,8,6,5,4,3,2,1.5,1,0.75,0.5,0.25 or 0.1 degree.For another example, first angle can be with second jiao It spends substantially the same (for example, +/- 0.5 degree) or identical.Make first angle and second angle is mutually the same, substantially the same or phase A part that close purpose is at least partially or fully three-D elements in the precursor substrate 4 (or is surrounded or portion Divide and surround hole) form constricted zone or compact area.These constricted zones or compact area help to resist compression (such as from packet Dress starts) and help to maintain three-D elements.Constricted zone may be formed on the part of three-D elements and/or can be at least partly Around the periphery in hole, to stablize three-D elements and/or hole when preparing with linear velocity.Constricted zone or compact area are not only to use In the majority fibers binding part for forming nonwoven substrate (i.e. for holding the fibers in binding part together).

Referring to Fig. 3, at least some of protrusion of multiple second protrusions 36 can be recessed by four of multiple second recessed portions 38 Concave portion surrounds.Referring again to Fig. 3, at least some of recessed portion of multiple second recessed portions 38 can be by multiple second protrusions 36 Four protrusions surround.

Referring to Fig. 3 A, at least some of base portion 44 of multiple second protrusions 36 or all it is being roughly parallel to the second rotation There can be the first width W3 on the direction of axis 14.At least some of recessed portion 38 in the region adjacent with base portion 44 exists The second width W4 can be had by being roughly parallel on the direction of the second rotation axis 14.First width W1 can be identical to, be different from, is small In or greater than the second width W2.

Fig. 4 is that the simplification with a part of the first roller 8 of a part of intermeshing Fig. 2A of the second roller 10 of Fig. 3 A is shown Meaning property cross-sectional view.If desired, its of the outer surface of the first roller 8 with multiple first protrusions 20 and multiple first recessed portions 22 The rest part of remaining part point and the second roller 10 with multiple second protrusions 36 and multiple second recessed portions 38 will be in most of feelings It intermeshes in an identical manner under condition.In some cases, it can be possible to it is expected only to form three-D elements in the longitudinal band of center And hole, as will be discussed in more detail below.In order to be clearly shown tool, precursor substrate 4 is not shown in Fig. 4, but will It is present in the gap between two rollers 8,10.In Fig. 4, part and the second roller 10 of multiple first protrusions 20 of the first roller 8 In the parts of multiple second recessed portions 38 intermesh.In addition, the part and first of multiple second protrusions 36 of the second roller 10 It intermeshes the part of multiple first recessed portions 22 of roller 8.In this way, one or more side walls of the first distal part 24 28 part is against the part of the shoulder 46 of the second distal part 40.Side wall 28 and shoulder 46 can apply together to precursor substrate 4 Power to compress precursor substrate 4 therebetween.When in the roll gap that precursor substrate 4 is located between the first roller 8 and the second roller 8, shoulder 46 and the parts of one or more side walls 28 can be used for forming constricted zone or compact area in precursor substrate 4.In substrate Constricted zone or compact area can help to resist the compression of three-D elements.Compression can be classified as precursor substrate 4 (for example, non- Weaving material) reversible elastic deformation.Compression, which refers to, to be extruded bulk precursor substrate for air and leads to the fiber of precursor substrate Be straightened and/or it is nested.Compression is not meant to, for example, the polymer in non-woven material is caused to start flowing to fill gas Gap and it is subsequently cured (referred to as irreversible flexible deformation).Irreversible flexible deformation can form rigidity in precursor substrate Region, to reduce the flexibility of precursor substrate.Therefore, reversible flexible deformation is more advantageous than irreversible flexible deformation, because Better flexibility is provided for it, while the resistance of the compression to three-D elements being still provided.Therefore, in side wall 28 and shoulder Clearance G being provided between 46, is compressed therebetween only to allow precursor substrate without will lead to its melting and solidification.

Fig. 4 A is the exploded view of the region 4A of Fig. 4.Fig. 4 A shows exemplary, the optional configuration of shoulder 46 and side wall 28, Respectively there are two offset surfaces for tool for middle shoulder 46 and side wall 28.Any of shoulder 46 and side wall 28 disclosed herein can have There is such offset surface.In other cases, shoulder 46 and side wall 28 can not have two offset surfaces.

Multiple first protrusions 20 can not exclusively engage multiple second recessed portions 38, and multiple second protrusions 36 can not It is fully engaged multiple first recessed portions 22.As described above, multiple first protrusions 20, i.e. point and the first distal part 24 are and multiple Second recessed portion 38 combines, for forming hole in precursor substrate 4.Multiple second protrusions 36, i.e. the second distal end 42 and Two distal parts 40 are combined with multiple first recessed portions 22, for forming three-D elements in precursor substrate 4.Constricted zone can Such as compression caused by packing to facilitate three-D elements and resist compression is formed in three-D elements.

Referring to Fig. 5, at least some of multiple second protrusions 36 can have in the second distal end 42 and the second distal portion Divide the sloping portion 50 among 40.This prevents or precursor substrate 4 is at least inhibited to contact acute angle and tearing or shape in precursor substrate 4 At sharpened edge.Referring to Fig. 6, at least some of multiple second protrusions 36 can have in the second distal end 42 and the second distal side Fillet 52 among part 40.This prevents or precursor substrate 4 is at least inhibited to contact acute angle and tear or formed in precursor substrate 4 Sharpened edge.

Fig. 7 A-7G is the exemplary schematic top view of the various configuration of multiple second protrusion 36'.In such example, the Two distal part 40' can be different from the shape of the second distal end 42' (see, for example, Fig. 7 B-7G).In another example, Second distal part 40' can be same or similar with the shape of the second distal end (see, for example, Fig. 7 A).Referring to Fig. 7 C-7E, Second distal part 40' can be halfway around the second central longitudinal axis 48' of multiple second protrusion 36'.In such case Under, constricted zone or compact area in substrate 2 can be halfway around three-dimensional feature structures.Referring to Fig. 7 E and Fig. 7 G, second Distal part 40' can be entirely around the second central longitudinal axis 48' of multiple second protrusion 36'.In this case, substrate Constricted zone or compact area in 2 can be entirely around three-dimensional feature structures.

Fig. 8 A-8F is the exemplary schematic top view of the various configuration of multiple first protrusion 20'.Side wall 28' can be complete Around the first central longitudinal axis 32'(see, for example, Fig. 8 C, Fig. 8 E and Fig. 8 F).In other cases, side wall 28' can be endless Entirely around the first central longitudinal axis 32'(see, for example, Fig. 8 A, Fig. 8 B and Fig. 8 D).In some instances, multiple first protrusions The configuration of 20 side wall can be matched or be mismatched with the configuration of the second distal part of multiple second protrusions.

Fig. 9-17 shows other configurations of the part of the first roller and the second roller 8,10 within the scope of this disclosure, following institute It states.Fig. 9 is the top view of the sample portion of first roller of a pair of rolls of Fig. 1.Fig. 9 A is the intercepted along the line 9A-9A of Fig. 9 The cross-sectional view of one roller.Figure 10 is the top view of the sample portion of second roller of a pair of rolls of Fig. 1.Figure 10 A is the line along Figure 10 The cross-sectional view of second roller of 10A-10A interception.Figure 11 is first with a part of intermeshing Fig. 9 A of the second roller of Figure 10 A The schematic cross section graphical representation of exemplary of a part of roller.Figure 12 is the top view of the sample portion of first roller of a pair of rolls of Fig. 1 Figure.Figure 12 A is the cross-sectional view along the line 12A-12A of Figure 12 the first roller intercepted.Figure 13 is showing for second roller of a pair of rolls of Fig. 1 The top view of example property part.Figure 13 A is the cross-sectional view along the line 13A-13A of Figure 13 the second roller intercepted.Figure 14 is with Figure 13 A's The schematic cross section graphical representation of exemplary of a part of the first roller of a part of intermeshing Figure 12 A of the second roller.Figure 15 is Fig. 1 A pair of rolls the first roller sample portion top view.Figure 15 A is cuing open along the line 15A-15A of Figure 15 the first roller intercepted View.Figure 16 is the top view of the sample portion of second roller of a pair of rolls of Fig. 1.Figure 16 A is to cut along the line 16A-16A of Figure 16 The cross-sectional view of the second roller taken.Figure 17 is one with the first roller of a part of intermeshing Figure 15 A of the second roller of Figure 16 A The schematic cross section graphical representation of exemplary divided.In Fig. 9-17, identical drawing reference numeral reflection is identical as being discussed about Fig. 2-4 Component.

In some cases, in terms of top view, due to generating substrate to prevent or at least inhibit the deformation in the hole to be formed Speed, multiple first protrusions can have the machine direction length shorter than transverse width.In other words, machine direction length can be shorter than Transverse width, so that forming circular hole.If the machine direction length of multiple first protrusions is identical as transverse width, due to producing The speed of raw substrate, can form oval (elongated on MD) hole.For the same reason, multiple second protrusions can be with similar side Formula design.

Figure 18 is a part of the first roller 8 and a part of intermeshing cross-sectional view of the second roller 10.Figure 18 A is Figure 18's The profile of details 18A.Figure 18 and Figure 18 A shows the other forms of the part of the first roller and the second roller 8,10.In Figure 18 In Figure 18 A, identical identical component drawing reference numeral reflection and discussed about Fig. 2-4.It is more as shown in other figs. Second distal end 42 " of a second protrusion 36 " has arch or dome-like shape without being flat distal end 42.It is important Be it may be noted that the first roller and the second roller of Figure 18 show the form of roller 8,10, wherein three-dimensional feature structure formation/aperture only exists The middle section of roller occur with form the center longitudinal band of three-D elements and hole in the substrate and formed no three-D elements and The side in hole, this will be discussed in further detail below.Selective three-dimensional feature structure formation/aperture can also be in a machine direction (regardless of whether being in center longitudinal band form) occurs.In other words, in a machine direction, three can be formed in the first region Element/hole is tieed up, second area can not have three-D elements/hole, and then third region there can be three-D elements/hole.In machine On device direction, first area can be most upstream region, and third region can be the smallest upstream region, and wherein second area exists Between first area and second area.In top flat example, for example, three-D elements/hole can be only when being placed in absorbent article It is formed in the back waist region of top flat.

Precursor substrate 4 and thus substrate 2 can be formed by one or more layers, for example, one or more non-woven materials, one Kind or a variety of non-woven materials and one or more films or one or more films.Provided that more than one layer, then The layer can by mechanical adhesion, adhesives, pressure bonding, hot adhesion, make hot-air by two layers or by other Joint method is bonded together or is attached to each other, to form multi-layer substrate 400.It alternatively, can be in subsequent fiber deposition step Forming layer such as polymerize for the staple fiber or two subsequent filature fleece formations comprising additive of the first kind and Second Type The first carding operation and the second carding operation of the beam of object long filament.One or more layers are in base weight, hydrophily, material, fiber, close It may be the same or different in terms of degree and/or other characteristics.If layer can have and the there are more than one layer in precursor substrate One layer of identical size and shape, or can have the size and shape different from first layer.In other words, extra play can be complete It is Chong Die with first layer, or can be only partially Chong Die with first layer.The layer of precursor substrate 4 and substrate 2 can have different colors, Such as color with different Δ E values and/or difference L*a*b* value.Some examples can for white first layer and the blue second layer, Light blue first layer and the navy blue second layer or purple first layer and the blue second layer clip the first white of blue middle layer Chromatograph and third white layer.Figure 19 is that can be transmitted by the roll gap being formed between the first roller of the disclosure and the second roller 8,10 The top view of exemplary precursors substrate.Figure 20 is the cross-sectional view of the precursor substrate of Figure 19 of 20-20 interception along the line.Along Figure 21 is The cross-sectional view of the precursor substrate of Figure 19 of 21-21 interception.Figure 19 shows the precursor substrate 4 with first layer 3 and the second layer 5.The It is one layer 3 wider than the second layer 5.When precursor substrate 4 is transmitted through the roll gap formed by the first roller and the second roller 8,10, the second layer 5 can be positioned on or below first layer 3.The extra play of different in width, such as third layer can also be provided.In some cases, The second layer 5 or other layers can be discontinuous rather than as shown in the figure continuous, such as by using cutting and sliding work Skill.In this case, for example, first layer 3 can be top flat, and the second layer 5 can be acquisition/distribution layer.When the second layer 5 is not required to When wanting or be not intended to the entire spacing of absorbent article, this may be desired.As shown in the cross-sectional view of Figure 20 and Figure 21, second Layer 5 is wide unlike first layer 3 in a lateral direction.The side of first layer 3 and/or the second layer 5 may not be linear and can With such as arcuate section.First layer 3 can have in about 10gsm to about 25gsm, about 12gsm to about 20gsm, about 12gsm to about 18gsm, about 13gsm, about 14gsm, about 15gsm, about 16gsm, the base weight about in the range of 17gsm, are specifically set forth in specified model It encloses and all 0.1gsm increments in all ranges formed therein or to be formed.The second layer 5 can have in about 10gsm To about 40gsm, about 15gsm to about 30gsm, about 15gsm to about 25gsm, about 18gsm, about 22gsm, about 19gsm, about 20gsm, Base weight in the range of about 21gsm is specifically set forth in specified range and all ranges formed therein or to be formed All 0.1gsm increments.For example, first layer 3 can be 175mm wide, and the second layer 5 can be 95mm wide.In one case, First layer 3 may include two sidepiece parts for being attached to the side of the second layer 5, so that forming three-member type substrate.

Exemplary precursors substrate can have first layer and the second layer (or any other appropriate number of layer, such as one layer or Three layers).First layer may include multiple first fibers and/or long filament (herein sometime collectively referred to as " fiber ").Multiple first is fine Dimension may include that size, shape, composition, danier, fibre diameter, fibre length, and/or weight are identical, substantially the same or not Same fiber.The second layer may include multiple second fibers.Multiple second fibers may include size, shape, composition, danier, fibre Tie up diameter, fibre length, and/or identical, the substantially the same or different fiber of weight.Multiple first fibers and multiple second Fiber can be identical, substantially the same or different.Extra play can have identical or different configuration.

First layer and/or the second layer may include the bicomponent fibre with crust and core.Crust may include polyethylene and core It may include polyethylene terephthalate (PET).Crust and core also may include it is known to those skilled in the art it is any its Its suitable material.Crust and core can respectively contain based on the weight of fiber about 50% fiber, but other modifications (for example, Crust 60%, core 40%；Crust 30%, core 70% etc.) also within the scope of this disclosure.Constitute first layer and/or the second layer Bicomponent fibre or other fibers can have about 0.5 to about 10, about 0.5 to about 6, about 0.75 to about 4, about 1.0 to about 4, about Danier in 1.5 to about 4, about 1.5 to about 3, about 1.5 to about 2.5 or about 2 ranges specifically includes specified range and formation All 0.1 danier increments in all ranges therein or to be formed.It is long that danier is defined as every 9000 meters of fibers The quality (gram) of degree.In other cases, the danier of the fiber of first layer can be in about 1.5 daniers to about 6 daniers or about 2 In the range of danier to about 4 daniers and the danier of the fiber of the second layer can in about 1.2 daniers to about 3 daniers or In the range of about 1.5 daniers to about 3 daniers, it has been specifically set forth in specified range and has been formed in wherein or is formed by it All ranges in all 0.1 danier increments.In some cases, denier of the fiber of first layer than the fiber of the second layer Neil at least 0.5 danier, at least 1 danier, at least 1.5 daniers or at least 2 daniers greatly, this at least partly depends on Specifically acquisition and/or distribution system used in a certain absorbent article.The fiber for being higher than the second layer by providing danier Danier first layer fiber, provide gradient pores in liquid permeable substrate.The gradient pores can pass through in liquid Substrate in better drying property and/or acquisition are provided.Fiber in first layer with larger danier is provided than in the second layer With the bigger hole of the fiber compared with denier, to generate gradient pores between said layers.

Multiple first fibers and the second fiber may also include the fiber of any other suitable type, such as polypropylene fibre, Other polyolefin, it is the amyloid sustainable resin of such as polylactic acid, thermoplasticity of other polyester other than PET, other sustainable Resin, biology PE (bio-PE), biology PP (bio-PP) and biology PET (Bio-PET), viscose rayon, rayon fiber or Other suitable non-woven fibres.These fibers can have any suitable danier or danier range and/or fibre length Or fiber length ranges.In the case where multiple first fibers and identical or substantially the same the second fiber, multiple second fibers It can be handled with hydrophilic agent such as surfactant, so that multiple second fibers become hydrophilic or at least hydrophobicity is smaller.It is more A first fiber can not have to surfactant and handle, so that they keep native hydrophobic state or multiple first fibres in them Dimension can be handled with surfactant to become to have less hydrophobicity.

First layer can have the base weight within the scope of about 10gsm to about 25gsm.The second layer can have in about 10gsm to about Base weight within the scope of 45gsm.The base weight of substrate (both first layer and the second layer) can in for example, about 20gsm to about 70gsm, about 20gsm to about 60gsm, about 25gsm are to about 50gsm, about 30gsm to about 40gsm, about 30gsm, about 35gsm or about 40gsm In range.

In one form, the base weight of precursor substrate 4 can be about 30gsm to about 40gsm or about 35gsm.In this example In, first layer can have the base weight within the scope of about 10gsm to about 20gsm or about 15gsm, and the second layer can have about Base weight within the scope of 15gsm to about 25gsm or about 20gsm.In another example, the base weight of substrate can be about 20gsm.In In this example, first layer can have the base weight of about 10gsm and the second layer can have the base weight of about 10gsm.Show at another In example, the base weight of substrate can be about 60gsm.In such examples, first layer can have the base weight of about 24gsm and the second layer can Base weight with 36gsm.All other suitable basis weight range of first layer and the second layer and substrate is in the scope of the present disclosure It is interior.Therefore, the base weight of specific product requirement design level and substrate can be directed to.

What is specifically listed herein is in basis weight range specified above and to be formed in all models formed wherein or by it Enclose interior all 0.1gsm increments.

In some cases, it can be possible to wish that there is the base weight high compared to the second layer in first layer.For example, first layer Base weight can at least about 1 to about 4 times of base weight of the second layer, at least about 1 to about 3.5 times, about 1.5 to about 3 times, about 1.5 times extremely About 3 times, about 2 times, about 2.5 times or about 3 times.In some cases, for example, the base weight of first layer can be in about 20gsm to about In the range of 30gsm, and the base weight of the second layer can be in the range of about 10gsm to about 20gsm.Specifically list herein be Basis weight range specified above and all 0.1gsm increments being formed in all ranges formed wherein or by it.By mentioning For having the first layer (hydrophobicity) of the base weight higher than the second layer (hydrophily), provide in liquid permeable substrate than parent The more hydrophobic material of water-based material.More hydrophobic material according to information and conviction, in liquid permeable substrate Preferably acquisition and/or drying property are provided with the lesser material of hydrophily.The surface tension of hydrophilic layer can reduce, with can in liquid The substrate of transmission at least inhibit when receiving one or more ejectas hydrophilic layer (second layer) pollution hydrophobic layer (first layer) (and Keep its more hydrophilic).

Fiber can for spun-bonded fibre, spun lacing fiber, carded fiber, meltblown fibers, nanofiber (less than 1 micron) or other The fiber of suitable type.Fiber can be curling.Fiber can have circular cross section or a non-circular cross sections, such as oval or three It is leaf.

In one example, referring to Figure 19, first layer 3 and the second layer 5 can be formed together the top flat of absorbent article.First layer 3 can be positioned at the surface towards baby or towards on wearer side.First layer 3 (towards wearer side) can be hydrophobic and the Two layer 5 can be hydrophilic (towards garment side) or the second layer 5 can be hydrophobic (towards wearer side) and first layer 3 can be hydrophilic (towards garment side).In some configurations, both layers 3,5 (or other layers) can have same degree or not With the hydrophobicity or hydrophily of degree.Any one of layer 3,5 or both can have three-D elements as described herein and/or hole. In the case where both layer 3,5 has three-D elements and hole, three-D elements and hole may be formed in two layers/pass through two layers of shape At.When precursor substrate 4 is transmitted through roll gap, two layers 3,5 (or other layers) can lead in the instance where such an adhesive is not utilized It crosses the first roller and the second roller 8,10 is bonded together.In other cases, adhesive can be used for engaging on each layer.

In some cases, binding part 9 can be formed around the part on the periphery of the second layer 5, to help to engage the second layer 5 To first layer 3.Binding part 9 can also be formed in other regions of first layer and second layer overlapping.Binding part 9 can for first layer and Constricted zone in the second layer 3,5.Binding part 9 can be in solid non-ferrous, in roll gap (that is, passing through the first roller and the second roller 8,10) Or roll gap downstream is applied to first layer and the second layer (or extra play).Tool for applying binding part 9 can be a pair of rolls, There is flat surfaces or convex block with convex block on one roller and on another roller.If providing convex block on two rollers, They can be in contact with each other to form binding part 9.If binding part 9 will be applied in roll gap, the first roller and the second roller 8,10 It may include convex block and/or flat surfaces.

In some cases, it can be used as the outer covering piece of absorbent article by the substrate of disclosed method and tool production Material or other parts as absorbent article.

Precursor web 4 and/or substrate 2 (after the roll gap between the first roller and the second roller 8,10) can be subjected to various places Reason.Some exemplary process are chemical treatment, mechanical treatment and/or heat treatment.Chemically treated example can be in the first roller and Apply one or more lotions, surfactant, vitamin, pH before, after, or during roll gap between two rollers 8,10 to adjust Agent, ink, enzyme, hydrophilic material, hydrophobic material and/or other substances.These chemical treatments it is sprayable to precursor substrate or It in substrate, is rolled onto precursor substrate or substrate, is applied by one or more of first roller and the second roller 8,10 or part thereof Add, and/or can be applied by other methods.In some cases, it is raised and/or multiple can be applied to multiple first for chemical treatment Second protrusion 20,36 and substrate is then transferred in roll gap.For example, hydrophobic composition can be before solid non-ferrous be applied to Body substrate 4, and the first distal part 24 of at least some of multiple first protrusions 20 can be then coated with and be can be transferred to The hydrophily on the periphery in the hole formed by protrusion 20 is handled.In this case, substrate 2 can be predominantly hydrophobic, but in hole Periphery on or near have hydrophilic region.The example of mechanical treatment can be embossing before the nip or later, transverse direction Tensioning and/or machine direction tensioning.Such mechanical treatment can be in the first roller and the second roller 8,10 upstreams and/or downstream by other rollers Or other equipment apply.The example of heat treatment may include heating precursors substrate 4 before the nip, the heating precursors base in roll gap Bottom, and/or substrate is heated after the nip.It can be for example by making hot-air blow over precursor substrate 4 or substrate 2 (that is, " air is worn Cross), by running entire precursor substrate 4 or substrate 2 by heat tunnel, by adding the surface of precursor substrate 4 or substrate 2 It is run on hot-rolling on (with only heating surface) or roll gap between two heating rollers and runs (heat two surfaces), pass through spoke It penetrates, and/or by the first roller of heating and/or the second roller 8,10 come heating precursors substrate 4 or substrate 2.Hot-air can also blow over roller 8, the conduit in one or more of 10, with heating precursors substrate 4.The heating precursors base before precursor substrate 4 enters roll gap Bottom 4 can lead to precursor substrate 4 and absorb enough heats to allow the polymer in precursor substrate 4 or precursor substrate 4 under stress It flows and generates binding part to stablize hole 56 and/or three-D elements 54.Heating substrate 2 can lead to three-D elements 54 after the nip With hole 56 " setting " into substrate.In some cases, it can be possible to it is expected for energy to be input in precursor substrate or substrate to help In formation three-D elements 54 and hole 56 and/or help " setting " three-D elements and/or hole.This input energy can also help to stablize Substrate and it can promote better fiber fusion in substrate.It is basad provide input energy can also be provided substrate three-D elements or Ability of the entire substrate better against the compression due to caused by packaging.

It, can be in roll gap or roll gap downstream is cooled if precursor substrate 4 is heated in solid non-ferrous.Cooling can lead to It crosses and maintains the first roller and the second roller 8,10 at ambient temperature, by running substrate 2 on chill roll, or pass through cooling the One roller and the second roller 8,10 are realized.First roller and the second roller 8,10 can be at temperature more lower than the temperature of precursor substrate.It is cold But it can also be realized in roll gap by the way that surrounding air or cooling air to be blown into roll gap.It is cooling can also by surrounding air or It is (such as cooling by blowing to surrounding air in substrate in roll gap substrate downstream, or by providing the cooling source blown in substrate Air) or realized by chill roll.Cooling can also be by neutralizing roll gap in roll gap (cooling the first roller and the second roller 8,10) Cooling in downstream (chill roll, the surrounding air being blown into or the cooling air being blown into) is realized.

It, can be cooled in roll gap downstream if precursor substrate 4 is heated in roll gap.Cooling can pass through environment sky Gas, by the surrounding air being blown into, or by providing cooling source (cooling air being such as blown into) or chill roll come under roll gap Trip is realized.

Referring now to Figure 22, the top view of continuous substrate 2 is shown.The substrate 2 be three-D elements 54 and/or hole 56 by After first roller and the second roller 8,10 are formed in substrate 2.Three-D elements 54 and hole 56 are generally shown in FIG. 22, merely for saying Bright purpose.Substrate 2 can be formed by one or more layers, as quoted in this article.Two layers can transverse direction having the same it is wide Degree or different transverse direction width.Transverse direction in Figure 22 is perpendicular to arrow " MD ".In one case, extra play or In two layers of center longitudinal band 7 that can be placed only in substrate 2.

In form of single sheet or the form of two or more layers, wherein all layers transverse direction width having the same, Three-D elements 54 and/or hole 56 can be made only in center longitudinal band 7, and wherein the region in 7 outside of center longitudinal band does not have Three-D elements 54 and/or hole 56.In this way, a kind of method may include the center longitudinal band 7 and multiple first for only making precursor substrate 4 The part of protrusion 20, the part of multiple first recessed portions 22, the part of multiple second protrusions 36 and multiple second recessed portions 38 Part contacts.In this way, the first roller and the second roller 8,10 can have illustrative configuration shown in Figure 23, wherein far from roller 8,10 The first area 58 at center is without any protrusion or any recessed portion, and the second area 59 close to the center of roller 8,10 includes Multiple first protrusions and multiple second protrusions 20,36 and multiple first recessed portions and multiple second recessed portions 22,38.Therefore, Three-D elements 54 and/or hole 56 can be made only in the center longitudinal band 7 of substrate 4.In one case, logo, brand name Claim or other labels 61 may be formed in side 60 and/or in center longitudinal band 7.The logo, brand name or other labels 61 usable tools as described herein are for example formed by embossing.Under any circumstance, logo, brand name or other labels 61 can have three-D elements or can be formed by three-D elements, recessed portion and/or hole.

In the precursor substrate of two or more layers, one of layer has the transverse direction different from another or multiple layers Direction width, three-D elements 54 and/or hole 56 can be made only between multiple layers the place with overlapping, such as in center machine In direction band 7 or in another part.In this case, a kind of method may include transmitting the first precursor in a machine direction Web transmits the second precursor web in a machine direction under or over the first precursor web.First precursor fiber Net and the second precursor web can by binding part, by air binding part, adhesive bond, or can only be in contact with each other and It is bonded together in roll gap.First precursor web can have the first transverse direction width, and the second precursor web can have There is second, lesser transverse direction width.This method may include substantially only in or only in the first precursor substrate and the second precursor Substrate makes the parts of precursor substrate and the second precursor substrate and multiple first protrusions, multiple first recessed portions in the case where being overlapped Partially, the part of multiple second protrusions and the part of multiple second recessed portions contact in roll gap.Gained substrate will also have figure Appearance shown in 22 has one with materials at two layers in center longitudinal band 7 and except center longitudinal band 7 Layer.

Once three-D elements 54 and/or hole 56 are formed in center longitudinal band 7 (either one layer or multiple layers), do not have The side 60 or its region for having three-D elements 54 and/or hole 56 can be stretched in a lateral direction to reduce the base weight of side 60.Such as Fruit substrate is used as the top flat in absorbent article (such as diaper or adult incontinence product), then at least some regions of side 60 can quilt It is located under the leg cuff of absorbent article.In this way, these regions or entire side 60 of side 60 can not contact the skin of wearer And it may be invisible to consumer or nursing staff.It therefore, can be by stretching at least these regions or whole in a lateral direction A side come realize material save.For example, if stretching front side portion 60 have 15gsm (gram/m) base weight, side Portion 60 can be stretched in a lateral direction, so that their base weight becomes 10gsm.This transverse direction stretching can be with a variety of sides Formula is realized.

The first draw roll 62 and the second draw roll 64 can be used to realize that transverse direction stretches side in 4 and Figure 25 referring to fig. 2 A kind of 60 or part thereof suitable exemplary approach.First draw roll and the second draw roll 62 and 64 can respectively have middle part Points 66, which is about radial without any three-D elements.First draw roll 62 may include in outside 68,70 Multiple first ridges 72 and multiple first grooves 74.Second draw roll 64 may include multiple second ridges 76 in outside 68,70 With multiple second grooves 78.On at least some of multiple first ridges 62 on first roller 62 or all engageable second roller 64 At least some of multiple second grooves 78 are whole.Similarly, at least some of multiple second ridges 76 on the second roller 64 Or at least some of multiple first grooves 74 on whole engageable first rollers 62 or whole.Multiple first on first roller 62 The tip 80 of ridge 72 can enter multiple second grooves 78 on the second roller 64 to certain depth of engagement " E ".Similarly, the second roller The tip 82 of multiple second ridges 76 on 64 can enter multiple first grooves 74 on the first roller 62 to certain depth of engagement E. The degree that depth of engagement E control side 60 stretches in a lateral direction.Lower depth of engagement causes less transverse direction to be drawn It stretches, and higher depth of engagement causes more transverse direction to stretch.Therefore, the degree that the transverse direction of side 60 stretches can Changed according to depth of engagement E.

The side 60 of substrate 2 can be positioned in the outside 68 and 70 on the first draw roll and the second draw roll 62 and 64 Between.Center longitudinal band 7 can be positioned on the centre of the middle section 66 of the first draw roll and the second draw roll 62 and 64.With this Mode, center longitudinal band 7 can not be stretched horizontally, and side 60 can be stretched in a lateral direction.In addition, with this Mode, center longitudinal band 7 can not contact the middle section 66 of roller 62,64 actually, so that three in center longitudinal band 7 Dimension element 54 is not compressed.

Existed only in two layers of configuration in the longitudinal band of center in the wherein second layer, a kind of method may include or only exist First layer is stretched in a lateral direction in the case that first layer is not Chong Die with the second layer (that is, except the longitudinal band of center).It should Stretching step can occur in solid non-ferrous or roll gap downstream.

Referring again to Figure 22, substrate 2 (has three-dimensional element either in the longitudinal band of center or in entire substrate 2 Part 54 and hole 56) component (such as top flat, acquisition layer, Distribution Layer or outer covering piece is non-knits for absorbent article can be cut into Producing material material) final spacing.Substrate 2 can be cut along line 88.Although line 88 is shown as perpendicular to machine direction, this field It will be recognized that practical cutting path can be not orthogonal to machine direction, but can be transverse to machine direction to consider The speed of mobile substrate during cutting.In other words, cutting path can be angled relative to transverse direction, to consider absorbent article Substrate velocity on production line.The subsequent engageable a part to the absorbent article on absorbent article production line of the substrate of cutting.

Referring again to Figure 22, center longitudinal band 7 can be the layer of placement on another layer.In the example of top flat, top flat There can be solid, general plane layer on its surface towards clothes, and have on its surface towards wearer The sticking patch of center longitudinal band 7.Sticking patch may include precursor substrate, and the precursor substrate is across the first roller and the second roller 8,10 Roll gap and include three-D elements 54 and/or hole 56.Sticking patch can be or can not be complete absorbent article spacing.In other words, it mends Piece can not be the overall length of top flat and/or absorbent article.In addition, sticking patch can be or can not be top flat full duration.

Figure 26 is for forming three-D elements and exemplary first roller in hole and replacing for the second roller 8,10 in precursor substrate For the cross-sectional view of part.Figure 27 is the cross-sectional view of the three-dimensional substrates 134 in the hole with the first roller and the generation of the second roller by Figure 26. Referring to fig. 26, the first roller 8 may include multiple first protrusions 120 (its can it is similar with multiple first protrusions 20 discussed in this article or It is similar, including base portion, the first distal part and the first distal end) and multiple first recessed portions 122.Multiple first recessed portions At least some of 122 recessed portion all may include that hole forms protrusion 118.Hole formed protrusion 118 can for taper or by It is configured to define any other suitable shape in hole.Hole formed protrusion 118 may include point 124 (as described herein " points ") with Help to form hole in precursor substrate 4.Hole, which forms protrusion 118, can be configured to the shape in the three-D elements 128 of precursor substrate 4 Pore-forming 129.It may be desirable to having hole 129 to exist in three-D elements 128 to allow fluid (for example, urine, through liquid, loose stools) to enter The voidage 126 and at least inhibition fluid and the skin of wearer formed on the downside of three-D elements 128 is kept in contact.The One roller 8 may include that the densification of at least part or whole around the periphery of at least some of multiple first recessed portions 122 is convex Play 130.In other words, fine and close protrusion 130 can be entirely around recessed portion 122 or can be only partially about recessed portion 122.It is fine and close Protrusion 130 can be continuous or discontinuous.Fine and close protrusion 130 can be used for forming constricted zone or densification in precursor substrate 4 Region 132.By having constricted zone or compact area 132 in substrate 4, three-D elements 128 can be stablized.

Referring again to Figure 26 and Figure 27, the second roller 10 may include multiple second protrusions 136 and multiple second recessed portions 138 (it can be similar or like with multiple second recessed portions 22 discussed in this article).At least some of multiple second protrusions 136 can Including the recessed portion 140 being limited in its second distal end 142.Recessed portion 140 is configured at least partly receiver hole shape At at least part of protrusion 118, including point 124, so that 128 aperture of three-D elements.Second roller 10 may include one or more Recessed portion 148, for receiving at least part of fine and close protrusion 130.Recessed portion 148 may or may not be entirely around protrusion 136, and can be continuous or discontinuous.

Figure 28 is the schematic diagram to form three roller techniques of substrate, which has the first substrate with three-D elements and hole Only with porose second substantially planar substrates.Figure 29 is the cross-sectional view intercepted along the details 29 of Figure 28.In Figure 28, the first roller 208 and second roller 210 can be identical as the first roller as described herein and the second roller 8,10, simply shown in Figure 28.Third roller 212 can be the roller with radially-outer surface 214, wherein defining multiple recessed portions 216.Recessed portion in third roller 212 can be with The recessed portion of multiple first recessed portions 22 in first roller 8 is same or similar.Third roller 212 can not have any protrusion.At this In three roller techniques of kind, precursor substrate 204 can transmit between the first roller and the second roller 208 and 210, to form as described herein three Tie up element and hole.Then, precursor substrate 204 can continue around the rotation of the first roller 208, plurality of first protrusion 20 and precursor base Bottom 204 engages.Second precursor substrate 205 is sent in the roll gap being formed between the first roller 208 and third roller 212.Then, Protrusion 20 enter third roller in recessed portion 216, in the roll gap between the first roller 208 and third roller 212 in the second precursor Pierced holes in substrate 205.Exemplary resulting structures are shown in the roll gap of Figure 29.

After the roll gap being transmitted through between the first roller and third roller 208 and 212, the second substrate 205 can be for substantially Flat, there is hole.Resulting structures are that the biradical bottom of the bottom substrate 205 with three-dimensional top substrate 204 and general planar is multiple Close object.Due to the first roller and third roller 208 and 212, hole will extend through two substrates 204,205.For example, three-dimensional top substrate 204 can be top flat, and the bottom substrate 205 of general planar can be acquisition layer.For another example, three-dimensional top substrate 204 can be top flat A part, and the bottom substrate 205 of general planar can be acquisition layer a part.Three-dimensional top substrate 204 and substantially flat Smooth bottom substrate 205 can respectively be formed by one or more layers or material.

Two substrate laminated materials provide integrality for structure and are locked in three-D elements and hole.First substrate and second Substrate 204,205 can not have heat-shrinkable fibre.One or more adhesives it is sprayable to or be otherwise applied to second In precursor substrate 205, so that it is adhered in the first precursor substrate 204 in roll gap.In some cases, in the first precursor base It may not be needed adhesive between bottom and the second precursor substrate 204,205.In this case, between the first roller and third roller The power of roll gap and hole opening technology can be enough to engage two layers.

Figure 30 is the exemplary three dimensional generated by the first roller of the disclosure and the second roller 8,10, the top perspective for having hole substrate Figure.Figure 31 is the exemplary three dimensional generated by the first roller of the disclosure and the second roller 8,10, the top view for having hole substrate.Figure 32 is The exemplary three dimensional of Figure 31, the rearview for having hole substrate.Figure 33 be across Figure 31 exemplary three dimensional, have hole substrate intercept cut open View.

Figure 34 shows the simplified schematic sectional illustrations diagram of roller 8,10, which is mainly configured in precursor base Three-D elements and constricted zone are formed in bottom 4 rather than hole.In Figure 34, the distal end 126 of multiple first protrusions 120 can shape At flat or circular surface, so as not to make precursor substrate aperture.It is multiple second protrusion 36 and second roller 10 can substantially keep with it is upper It states identical.Figure 36 shows the simplified schematic sectional illustrations diagram of the roller 8,10 of the engagement less each other of Figure 34.For example, current When hoping less compression, the engagement of this level can be used for thicker substrate.

Figure 35 shows the simplified schematic sectional illustrations diagram of roller 8,10, which is mainly configured in precursor base Hole and constricted zone are formed in bottom 4 rather than three-D elements or are more restricted compared with the roller 8,10 of Fig. 4 (for example, more low height) Three-dimensional feature structure.In Figure 35, the second distal end 142 of multiple second protrusions 136 can form flat or circular surface, Such as the height of the three-D elements in precursor substrate is formed or reduced to eliminate three-dimensional feature structure.Multiple first protrusions 20 and the One roller 8 can substantially keep same as described above.Figure 37 shows the simplified schematic section of the roller 8,10 of the engagement less each other of Figure 35 Graphical representation of exemplary.For example, the engagement of this level can be used for thicker base when the less compression of expectation and/or lesser hole Bottom.

Figure 38 shows the simplified schematic sectional illustrations diagram of the roller 8,10 similar with Fig. 4, but between roller 8,10 With more separation.In this case, roller 8,10 can be separated from each other, so that only forming hole and three in precursor substrate 2 Dimension element, and the not formed constricted zone between side wall 28 and shoulder 46.In some cases, the part of precursor substrate 4 can be It is slightly compressed between side wall 28 and shoulder 46, but the degree of the compression not up to generated by the roller 8,10 of Fig. 4.In this way, can be opposite The center to center distance of the first central longitudinal axis 32 of the first roller is adjusted in the second central longitudinal axis 32 of the second roller, with Determine decrement of the part of precursor substrate 4 between side wall 28 and shoulder 46.In some cases, it can be possible to it is expected more to press Contracting, and in other cases, it may be desirable to less compression.The thickness of precursor substrate 4 can also be in setting roller 8,10 The factor considered when the heart to centre distance.Be arranged the center to center distance of roller this concept could be applicable to it is described herein Any one of other exemplary rollers configurations.

Figure 39 is shown to be shown with the simplified schematic section of a part of a part of intermeshing first roller 8 of the second roller 10 Example property diagram.Figure 39 A is the exploded view of the region 39A in Figure 39.Second roller 10 can be basic with the second roller 10 of Figure 37 or Figure 38 It is upper identical or identical.At least some of protrusion 20 may include all the first distal part 24, which includes Elongate aperture structure with side wall 28.Side wall 28 can have first part 150 and second part 152, which has First angle, the second part have second angle.Central longitudinal axis 32 relative to protrusion 20 is (see, for example, Fig. 9 A and figure 39) measurement angle.Second part 152 is than first part 150 closer to the first distal end 26 or point.First angle is than Two angles are smaller or steeper.The first angle of first part 150 can be at about 20 degree to about 50 degree, about 25 degree to about 40 degree, about 30 Degree in the range of about 40 degree, about 35 degree, about 36 degree or about 37 degree, be specifically set forth in specified range and it is formed therein or from And all 0.1 degree of increments in all ranges formed.The second angle of second part 152 can about 30 degree to about 60 degree, about In the range of 35 degree to about 55 degree, about 40 degree to about 50 degree, about 46 degree, about 47 degree or about 48 degree, it is specifically set forth in specified range With all 0.1 degree of increments in all ranges formed therein or to be formed.By in first part 150 have compared with Small angle or steeper side wall and there is biggish angle and less steep side wall in second part 152, and with only The protrusion of the first distal part with an angle is compared, and total longitudinal length of protrusion 20 can be shorter.Shorter protrusion allows It is easier to engage between first roller and the second roller 8,10.Ginseng can be had by being configured for any of exemplary rollers of aperture Examine the feature for multiple first protrusions 20 that Figure 39 and Figure 39 A is described in this paragraph.In addition, the feature of multiple first protrusions 20 can be (for example, Figure 35 and Figure 37) is used when only preparing hole rather than three-dimensional protrusion.

Shoulder 46 can be towards the point taper inward of multiple first protrusions 20, or can have and 150 phase of first part Same angle.

Various rollers can be by with good thermal conductivity and being easy to mach material and being formed.Exemplary materials include such as library Amber, aluminium and brass.In some cases, roller can be steel or hardened steel.Roller can have various surface coverings to reduce abrasion.

Figure 40 is the top view of the part of exemplary first roller 8 of a pair of rolls of Fig. 1.Figure 40 A is the line 40A- along Figure 40 The cross-sectional view of a part of first roller 8 of a pair of rolls of Fig. 1 of 40A interception.First roller 8 may include multiple first protrusions 20, more A first recessed portion 22 and the first radially-outer surface 16.Multiple first protrusions 20 can respectively include the base portion with sidewall 34 30.At least some of multiple first protrusions 20 or major part can respectively include the first distal part 24, first distal part The first distal end 26 including forming point.Term " point " is defined below.Multiple first protrusions 20 can respectively include center Longitudinal axis 32.First distal part 24 may include side wall 28.Side wall 28 can have the in the first part close to base portion 30 One angle A, and there is second angle B in the second part far from base portion 30.First angle and second angle both phase For central longitudinal axis 32.First angle A can about 5 degree to about 60 degree, about 10 degree to about 50 degree, about 10 degree to about 40 degree, In the range of about 10 degree to about 35 degree, about 10 degree to about 30 degree, about 10 degree to about 25 degree, about 15 degree to about 21 degree or about 18 degree, All 0.1 degree of increments being specifically set forth in specified range and all ranges formed therein or to be formed.Second jiao Spending B can be in about 15 degree to about 70 degree, about 15 degree to about 50 degree, about 15 degree to about 40 degree, about 20 degree to about 40 degree, about 25 degree to about In the range of 35 degree, about 27 degree to about 29 degree or about 28 degree, it is specifically set forth in specified range and formed therein or thus shape At all ranges in all 0.1 degree of increments.

Figure 41 is the top view of the part of exemplary second roller 10 of a pair of rolls of Fig. 1.Figure 41 A is the line 41A- along Figure 41 The cross-sectional view of a part of the second roller 10 of 41A interception.Second roller 10 may include multiple second protrusions 36, multiple second recessed portions 38 and second radially-outer surface 18.Multiple second protrusions 36 may include the base portion 44 with side wall.In multiple second protrusions 36 It is at least some or most of can respectively include the second distal part 40, which includes the second distal end 42. Second distal end can be flat or substantially flat, or may include arcuate section or individual dome-like structures.Multiple second Protrusion 36 can respectively include central longitudinal axis 48.Second distal part 40 may include shoulder 46.Shoulder 46 can be close to base portion There is first angle C in 44 first part, and there is second angle D in the second part far from base portion 44.First jiao Degree and second angle are both relative to central longitudinal axis 48.First angle C can be at about 2 degree to about 50 degree, about 2 degree to about 40 Degree, about 2 degree to about 30 degree, about 2 degree to about 20 degree, about 5 degree to about 20 degree, about 5 degree to about 15 degree, about 8 degree to about 12 degree or about In the range of 10 degree, be specifically set forth in specified range and it is formed therein or to formed all ranges in all 0.1 Spend increment.Second angle D can about 2 degree to about 50 degree, about 2 degree to about 40 degree, about 2 degree to about 30 degree, about 2 degree to about 20 degree, In the range of about 3 degree to about 20 degree, about 3 degree to about 15 degree, about 5 degree to about 10 degree or about 7 degree, it is specifically set forth in specified range With all 0.1 degree of increments in all ranges formed therein or to be formed.

According to information and conviction, in some cases, it can be possible to it is expected to keep first angle A different with first angle C, to allow The constricted zone for more concentrating (smaller) is formed in the substrate among the shoulder 46 and side wall 28 of the first distal part 24.In other words It says, compared to the part cone structure when angle A with C identical or substantially the same (for example, within several years), makes first angle A and first angle C difference can make constricted zone form cyclic structure.If first angle A is identical with first angle C or substantially Identical, then the constricted zone formed in the substrate can be bigger, so as to influence the flexibility for being formed by substrate.With ring The constricted zone of shape structure can provide the improved flexibility for being formed by substrate.

Figure 42 is the package configuration by (one or more) substrate of various first rollers and the second roller 8,10 of the disclosure Example.First roller 8 can be rotated around first rotation 12 in the direction indicated by the arrow.Second roller 10 can be by arrow Side indicated by head is rotated upward around the second rotation axis 14.Before entering roll gap 6, precursor substrate 4 is partially around the The transmission of one roller 8.This allows precursor substrate 4 to be locked in the appropriate location on the first roller 8, because of 20 and Qi of multiple first protrusions One distal end 26 pierces through precursor substrate 4.Precursor substrate 4 is then conveyed through roll gap 6, and then at least partly around The transmission of second roller 10 keeps engaging with multiple second protrusions 36 on the second roller 10 so that being formed by substrate 2, will be three-dimensional Structure latches are to being formed by substrate 2.Such package configuration is referred to alternatively as " S type package " configuration.As begged for herein By the first roller and the second roller 8,10 and/or precursor substrate 4 can be heated to contribute to form substrate 2.First roller as described herein and This package configuration or the exemplary package configuration using Figure 43 for example can be used in any of second roller, or can be such as Fig. 1 In example shown in be transmitted through roll gap.Other wrap up configurations also within the scope of this disclosure.

Figure 43 is the package configuration by (one or more) substrate of various first rollers and the second roller 8,10 of the disclosure Another example.First roller 8 can be rotated around first rotation 12 in the direction indicated by the arrow.Second roller 10 can It is rotated in the direction indicated by the arrow around the second rotation axis 14.Before entering roll gap 6, precursor substrate 4 is partly It is transmitted around the first roller 8.This allows precursor substrate 4 to be locked in the appropriate location on the first roller 8, because of multiple first protrusions 20 Precursor substrate 4 is pierced through with its first distal end 26.Precursor substrate 4 is then conveyed through roll gap 6, and then at least partly Ground is transmitted around the second roller 10, keeps engaging with multiple second protrusions 36 on the second roller 10 so that being formed by substrate 2, with Three-dimensional structure is locked to and is formed by substrate 2.As discussed herein, the first roller and the second roller 8,10 and/or preceding can be heated Body substrate is to contribute to form substrate 2.

Method

The method that three-dimensional and optionally aperture substrate is prepared on absorbent article production line will be discussed now.

It provides and prepares method that is three-dimensional, having hole substrate on absorbent article production line.As described herein, substrate can be wrapped only Hole and constricted zone are included, or can only include three-D elements and constricted zone.This method may include on absorbent article production line Precursor substrate is transmitted in a machine direction, and the first roller with first rotation is provided and is provided with the second rotary shaft Second roller of line.First rotation and the second rotation axis can position generally parallel to each other, in the first roller and the second roller Between form roll gap.First roller may include the first radially-outer surface and at least partly extend outwardly from the first radially-outer surface It is multiple first protrusion.Multiple first protrusions can be configured to form hole in precursor substrate.First roller may include being limited to Multiple first recessed portions in one radially-outer surface, and form at least some of multiple first protrusions of elongate aperture structure The first distal part.Elongate aperture structure may include side wall.First distal end of at least some of multiple first protrusions It can be formed a little.Multiple first protrusions can respectively have the first central longitudinal axis for extending through the point.It the part of side wall can phase Have the first central longitudinal axis in about 5 degree to about 40 degree, about 10 degree to about 30 degree or about 15 degree to about 25 degree of range Interior first angle (for example, angle A, Figure 40 A).Second roller may include the second radially-outer surface and from the second radially-outer surface At least partly outwardly extending multiple second protrusions.Multiple second protrusions can be configured to form three-dimensional element in precursor substrate Part.Multiple second protrusions may include the second distal part and the second distal end.Multiple second recessed portions can be limited at second In radially-outer surface.At least some of second distal part may include the shoulder being located among base portion and distal end.It is more A second protrusion can have the second central longitudinal axis.The part of shoulder can have relative to the second central longitudinal axis about 3 Spend in the range of about 30 degree, about 3 degree to about 20 degree, about 5 degree to about 20 degree or about 5 degree to about 15 degree second angle (for example, Angle C, Figure 41 A).This method may include that the first roller is made to rotate in a first direction around first rotation, enclose the second roller The part and the portion of multiple second recessed portions of multiple first protrusions are rotated, made in second, opposite direction around the second rotation axis It point engages with intermeshing in roll gap and makes the part of the parts of multiple second protrusions and multiple first recessed portions in roll gap In engage with intermeshing.This method may include that precursor substrate is transported through to roll gap and is formed (all or at least in roll gap Two): (1) in precursor substrate using multiple first protrusions at least some of and multiple second recessed portions at least some of Hole；(2) using at least some of multiple second protrusions and at least some of multiple first recessed portions do not have it is porose The three-D elements in precursor substrate in region；And (3) are formed in the precursor base among the part of side wall and the part of shoulder The constricted zone at bottom.

This method may include the part of the three-D elements among the part of compression-side wall and the part of shoulder.Second distal end portion Portion can form flat or substantially flat surface, or can form arcuate surfaces or dome-shaped surface.Side wall can be around the One central longitudinal axis.In other cases, side wall can be halfway around the first central longitudinal axis.Shoulder can surround second Central longitudinal axis.In other cases, shoulder can be halfway around the second central longitudinal axis.

At least some of multiple first protrusions may include wide with first intercepted along the direction perpendicular to machine direction The base portion of degree.The base portion of at least some of multiple second protrusions can have second along the direction interception perpendicular to machine direction Width.Second width may differ from the first width.At least some of multiple first recessed portions can have along perpendicular to machine side To direction intercept third width.At least some of multiple second recessed portions can have along the direction perpendicular to machine direction 4th width of interception.Third width may differ from the 4th width.

This method may include the heating precursors substrate and cooling in roll gap downstream before precursor substrate is transmitted through roll gap Precursor substrate.This method may include heating the first roller and/or the second roller and in the cooling precursor substrate in roll gap downstream.In some cases Under, it may be desirable to heating precursors substrate and heat the first roller and/or the second roller before the nip, while still after the nip into Row cooling.Cooling can be carried out only by using surrounding air or by providing actual cold air or roller etc..

This method may include part, multiple first recessed portions for only making the center strip and multiple first protrusions of precursor substrate Part, multiple second protrusions parts and the parts of multiple second recessed portions contacted in roll gap.Center strip can be in machine It is continuous on direction.This method may include the only stretch precursor substrate in a lateral direction in the part on the outside of center strip.

This method may include contiguously transmitting under or over precursor substrate but with precursor substrate in a machine direction Two precursor substrates.Second precursor substrate can be in terms of weight, material, contact angle, density, fiber type, color or other characteristics It is identical or different with precursor substrate.Precursor substrate can have the first width along the direction interception perpendicular to machine direction.Second Precursor substrate can have the second width along the direction interception perpendicular to machine direction.First width can be greater than the second width.It should Method may include substantially only in or only make precursor substrate and second in the case where precursor substrate is Chong Die with the second precursor substrate The parts of precursor substrate and multiple first protrusions, the part of multiple first recessed portions, multiple second protrusions part and multiple the The part of two recessed portions contacts in roll gap.This method may include in the case where precursor substrate is not Chong Die with the second precursor substrate Stretch precursor substrate in a lateral direction.

This method may include being cut into precursor substrate after precursor substrate is transmitted through roll gap to be used for absorbent article The spacing of top flat.In some cases, this method may include precursor substrate and the second precursor substrate be transmitted through roll gap it Precursor substrate and the second precursor substrate are cut into the spacing for being used for absorbent article top flat afterwards.

Constricted zone may be formed on three-D elements or can be formed at least partly around the periphery in hole.

This method may include that precursor substrate is at least partly wrapped in front of precursor substrate is transported through roll gap Around one roller, and precursor substrate is at least partly wrapped in the second roller week after precursor substrate to be transported through to roll gap It encloses.

A kind of method may include transmitting precursor substrate in a machine direction on absorbent article production line, providing and have first First roller of rotation axis and offer have the second roller of the second rotation axis.First rotation and the second rotation axis It can position generally parallel to each other, to form roll gap between the first roller and the second roller.First roller may include the first radial appearance Face, from the first radially-outer surface at least partly it is outwardly extending it is multiple first protrusion.Multiple first protrusions can be configured to Hole (or only three-D elements) are formed in precursor substrate.First roller may include be limited in the first radially-outer surface it is multiple first recessed First distal part of at least some of multiple first protrusions of concave portion and formation elongate aperture structure.Elongate aperture structure Including side wall.First roller may include the first distal end portion to form at least some of multiple first protrusions of point (as defined above) Portion.Multiple first protrusions have the first central longitudinal axis for extending through the point.Side wall can have at about 30 degree to about 70 degree Range (or other ranges described in this paper) in the first angle relative to the first central longitudinal axis.Second roller can wrap Include the second radially-outer surface and from the second radially-outer surface at least partly it is outwardly extending it is multiple second protrusion.Multiple second Protrusion is configured to form three-D elements in precursor substrate.Multiple second protrusions may include the second distal part and the second distal side End.Second distal end can form flat or substantially flat surface, or may include such as dome-shaped surface.Second Roller may include multiple second recessed portions being limited in the second radially-outer surface.At least some of second distal part includes fixed Shoulder of the position among base portion and distal end.Multiple second protrusions have the second central longitudinal axis.Shoulder can have about In 20 degree to about 80 degree or about 30 degree to about 70 degree of range (or other ranges as set forth herein) relative in second The second angle of heart longitudinal axis.First angle can be in +/- 5 degree of second angle.This method may include surrounding the first roller First rotation rotates in a first direction, the second roller is made to rotate, make in second, opposite direction around the second rotation axis The parts of multiple first protrusions engage with the part of multiple second recessed portions and make multiple second with intermeshing in roll gap The part of protrusion engages with the part of multiple first recessed portions, precursor substrate is transported through roller with intermeshing in roll gap Gap.This method may include being formed to use at least some of multiple first protrusions and multiple second recessed portions extremely in roll gap Hole in few some precursor substrates；Use at least one at least some of multiple second protrusions and multiple first recessed portions A little is not having the three-D elements in the precursor substrate in porose region；And it is formed in the part of side wall and the part of shoulder Between precursor substrate three-D elements in constricted zone.

This method may include the part of the three-D elements among the part of compression or densification side wall and the part of shoulder.The One angle can be in +/- 3 degree or 1 degree +/- (or other ranges described in this paper) of second angle.In some cases, One angle can be substantially the same or identical with second angle.

The side wall of first distal end can surround the first central longitudinal axis, and shoulder can surround the second center longitudinal axis Line.In another case, the side wall of the first distal end can not exclusively or halfway around the first central longitudinal axis, and And shoulder can be not exclusively or halfway around the second central longitudinal axis.

This method may include handling after precursor substrate is transmitted through roll gap precursor substrate application.This method can wrap Include heating precursors substrate and/or the first roller of heating and/or the second roller before substrate is transmitted through roll gap.This method may include The heating precursors substrate in roll gap.When being measured by polarization microscope, method may additionally include in roll gap or roll gap downstream cold But precursor substrate.

A pair of rolls

The a pair of rolls of paragraph 1. for preparing three-dimensional on absorbent article production line, having hole substrate, the pair of roller include:

The first roller with first rotation；And

The second roller with the second rotation axis, wherein the first rotation and second rotation axis are big each other Cause positions in parallel, to form roll gap between first roller and second roller；

Wherein first roller includes:

First radially-outer surface；

Multiple first protrusions, the multiple first protrusion at least partly extend outwardly from first radially-outer surface, Wherein the multiple first protrusion is configured to form hole in the substrate；And

Multiple first recessed portions being limited in first radially-outer surface；

Wherein at least some of the multiple first protrusion includes having the first distal part of elongate aperture structure, Described in the first distal end of the first distal part form point, and wherein the elongate aperture structure includes side wall；

Wherein it is the multiple first protrusion respectively include the side perpendicular to the first rotation upwardly extend and with First central longitudinal axis of the point intersection, and wherein the part of the side wall has the range at about 5 degree to about 40 degree The interior first angle relative to first central longitudinal axis；

Wherein second roller includes:

At least partly second radially-outer surface outside from second radially-outer surface, wherein the multiple second is convex It rises and is configured to form three-D elements in the substrate；And

Multiple second recessed portions being limited in second radially-outer surface；And

At least some of the multiple second protrusion includes the second distal part and the second distal end；

Wherein at least some base portions including being located in the multiple second protrusion in second distal part With the shoulder among second distal end；

Wherein the multiple second protrusion respectively includes the upwardly extended in the side perpendicular to second rotation axis Two central longitudinal axis, and wherein the part of the shoulder have in the range of about 3 degree to about 25 degree relative to described The second angle of second central longitudinal axis；

Wherein the part of the multiple first protrusion is configured to intermesh with the part of the multiple second recessed portion Ground engagement；And

Wherein the part of the multiple second protrusion is configured to intermesh with the part of the multiple first recessed portion Ground engagement.

A pair of rolls according to paragraph 1 of paragraph 2., wherein described in the multiple first protrusion at least some includes The first substrate with the first width along the direction interception for being roughly parallel to the first rotation, wherein the multiple the In two protrusions it is described it is at least some include with along the second wide of the direction interception for being roughly parallel to second rotation axis Second base portion of degree, and wherein second width is greater than first width.

A pair of rolls according to paragraph 1 or 2 of paragraph 3., wherein described at least some in the multiple first recessed portion With the first width along the direction interception for being roughly parallel to the first rotation, wherein in the multiple second recessed portion Described at least some there is the second width along the directions interception for being roughly parallel to second rotation axis, and wherein institute The first width is stated greater than second width.

A pair of rolls according to any one of aforementioned paragraphs of paragraph 4., wherein the first angle is at about 10 degree to about 30 In the range of degree, and wherein the second angle in the range of about 3 degree to about 20 degree.

A pair of rolls according to any one of aforementioned paragraphs of paragraph 5., wherein second distal end includes flat , substantially flat surface, arcuate surfaces or arcuate section.

A pair of rolls according to paragraph 5 of paragraph 6. comprising in second distal part and second distal end portion Sloping portion among portion.

A pair of rolls according to any one of aforementioned paragraphs of paragraph 7., wherein the shoulder is convex around the multiple second Second central longitudinal axis risen.

A pair of rolls according to any one of paragraph 1-6 of paragraph 8., wherein the shoulder is halfway around the multiple Second central longitudinal axis of second protrusion.

A pair of rolls according to any one of aforementioned paragraphs of paragraph 9., wherein the side wall is convex around the multiple first First central longitudinal axis risen.

A pair of rolls according to any one of paragraph 1-8 of paragraph 10., wherein the side wall is halfway around the multiple First central longitudinal axis of first protrusion.

A pair of rolls according to any one of aforementioned paragraphs of paragraph 11., wherein the multiple first protrusion is described convex Four at least some recessed portions by the multiple first recessed portion in rising surround.

A pair of rolls according to any one of aforementioned paragraphs of paragraph 12., wherein the multiple second protrusion is described convex Four at least some recessed portions by the multiple second recessed portion in rising surround.

A pair of rolls according to any one of aforementioned paragraphs of paragraph 13., wherein described in the multiple first protrusion At least some respectively includes the base portion with the first width along the direction interception for being roughly parallel to the first rotation, Described in multiple second recessed portions it is described it is at least some respectively have cut along the directions for being parallel to second rotation axis The second width taken, and wherein first width is greater than second width.

A pair of rolls according to any one of aforementioned paragraphs of paragraph 14., wherein described in the multiple second protrusion At least some respectively includes the base portion with the first width along the direction interception for being parallel to second rotation axis, Described in multiple first recessed portions it is described it is at least some respectively have cut along the directions for being parallel to the first rotation The second width taken, and wherein first width is greater than second width.

A pair of rolls according to any one of aforementioned paragraphs of paragraph 15., wherein the elongate aperture structure includes taper Structure.

Dimension disclosed herein and value are not understood as being strictly limited to cited exact numerical.On the contrary, unless in addition It indicates, otherwise each such dimension is intended to indicate that described value and the range functionally equivalent around the value.For example, being disclosed as The dimension of " 40mm " is intended to indicate that " about 40mm ".

Unless expressly excluded or in other words it is limited, otherwise by every herein cited document, including any intersection Reference or related patents or application, full text are herein incorporated by reference.Reference to any document is not to recognize that it is The prior art of disclosed herein or claimed any embodiment or recognize its independently or with it is any Any combination of mode of other one or more bibliography proposes, suggests or discloses any such embodiment.In addition, working as Any meaning of term or any meaning or definition of definition and same term in document incorporated by reference in the present invention When contradiction, the meaning or definition for assigning the term in the present invention should be obeyed.

Although the specific embodiment of the disclosure has had been illustrated and described, for those skilled in the art It is readily apparent that in the case where not departing from the spirit and scope of the disclosure, many other variations and modifications may be made.Cause This, is intended to all such changes and modifications for covering in the appended claims and belonging in the scope of the present disclosure.