Absorbent article
阅读说明:本技术 一种吸收性物品 (Absorbent article ) 是由 杨立业 徐源鸿 李田雨 于 2020-06-24 设计创作,主要内容包括:本发明公开了一种吸收性物品,其包括面层、吸收体、护围、背层。面层、吸收体、护围上下叠置设置,其中面层与皮肤直接接触。面层从靠近穿戴者皮肤的一侧包绕吸收体并在远离穿戴者皮肤的一侧形成开口,并且面层的靠近开口的区域附接到护围的固定端或背层上。该吸收性物品的吸水速度快,且液体吸收量大。(The invention discloses an absorbent article, which comprises a surface layer, an absorber, a guard and a back layer. The surface layer, the absorber and the protective enclosure are arranged in an up-down overlapping mode, wherein the surface layer is in direct contact with the skin. The facing layer wraps around the absorption body from the side close to the wearer's skin and forms an opening at the side remote from the wearer's skin, and the area of the facing layer close to the opening is attached to the fixed end of the apron or to the backing layer. The absorbent article has a high absorption rate and a large liquid absorption amount.)
1. an absorbent article, comprising:
a facing layer in direct contact with the wearer's skin and configured to enable liquid to pass therethrough;
the back layer is arranged opposite to the surface layer and is positioned on one side far away from the skin of a wearer, and the back layer is made of breathable and waterproof materials;
an absorbent body disposed between the face layer and the back layer for absorbing and retaining the liquid; and
a containment flap including a fixed end secured between the topsheet and the backsheet and a free end opposite the fixed end, the containment flap for preventing leakage of the liquid from a lateral side of the absorbent article;
the method is characterized in that: the facing layer wraps around the absorbent body from the side close to the wearer's skin and forms an opening at the side remote from the wearer's skin, and the area of the facing layer close to the opening is attached to the fixed end of the cuff or to the backing layer.
2. The absorbent article of claim 1, wherein the region where the facing layer and the containment or back layer are attached to each other extends from the edge side toward the opening.
3. The absorbent article of claim 2, wherein the fixed end of the containment flap is interposed between the facing layer and the backing layer and is flush with the corresponding end of the facing layer in the transverse direction of the absorbent article.
4. The absorbent article of claim 1, wherein a longitudinal center plane of the opening substantially coincides with a longitudinal center plane of the absorbent article.
5. The absorbent article according to claim 2, wherein the region where the topsheet and the cuff or the backsheet are attached to each other extends over a distance L in the transverse direction of the absorbent article1Comprises the following steps:
5%*L≤L1≤20%*L,
wherein L is an extension distance of the absorber in the transverse direction.
6. The absorbent article of any of claims 1-5, wherein the containment flap extends from the fixed end around both lateral sides of the facing layer to the top surface of the facing layer on the side closer to the wearer's skin and the free end extends at said top surface, wherein said free end is configured as a fold having an opening towards the lateral side of the absorbent article.
7. The absorbent article of claim 6 wherein the fold comprises a first portion extending inwardly of the top surface and a second portion extending in an opposite direction from an end of the first portion.
8. The absorbent article of claim 7, wherein the second portion is provided with at least one longitudinally extending elastic body at a location toward an edge of the absorbent article.
9. The absorbent article of claim 8, wherein the extension distance D of the fold in the transverse direction at the top surface is: d is more than or equal to 20mm and less than or equal to 30 mm.
10. An absorbent article as defined in claim 1, wherein said topsheet comprises a PH adjusting agent selected from the group consisting of 0.05-1 wt% tea polyphenols, 0.05-0.1 wt% caprylhydroxamic acid, and combinations thereof.
11. An absorbent article as defined in claim 10, wherein said PH adjusting agent is present at a concentration of 0.05 wt% caprylhydroxamic acid or a mixture of 0.3 wt% tea polyphenol and 0.05 wt% caprylhydroxamic acid.
12. The absorbent article of claim 10 or 11, wherein the dosage of the PH adjuster is 7g/m2-10g/m2。
13. The absorbent article of claim 12, wherein the PH adjuster has a PH of 4.5 to 5.5.
14. The absorbent article of claim 1, wherein the absorbent article includes an elastic waist circumference for elastically attaching the absorbent article to a user, the elastic waist circumference includes a front waist region corresponding to the abdomen of the user and a rear waist region corresponding to the waist of the user, and a stretch magnification of the front waist region is lower than a stretch magnification of the rear waist region.
15. An absorbent article as claimed in any one of claims 1-5, characterized in that the surface layer is spaced apart from the backing layer or the skirt in a part-area of the side facing away from the wearer's skin to form a free zone, and that the free zone has an extension distance D1 in the transverse direction of the absorbent article of: d1 is more than or equal to 5mm and less than or equal to 15 mm.
16. The absorbent article of any of claims 1-5, wherein the absorbent article comprises an absorber covering sheet positioned between the topsheet and the absorber, the absorber covering sheet being a hydrophilic SMS nonwoven fabric or absorbent paper.
17. The absorbent article of claim 16, wherein the width D2 of the opening is: d2 is not less than 15mm and not more than 25 mm.
18. The absorbent article according to claim 17, wherein the absorbent comprises fluff pulp, water-absorbent polymer resin particles, or ES fibers.
19. The absorbent article of claim 1, wherein the topsheet comprises low-water-retention fibers having a water retention capacity of 20mg/15ml to 50mg/15 ml.
20. The absorbent article of claim 1, wherein the absorbent article is a pant-type diaper that can be worn directly.
Technical Field
The present invention relates to the field of articles of daily use, and in particular to an absorbent article for use as a paper diaper for infants or adults and the like.
Background
Fig. 1 shows an expanded view of an absorbent article such as a pant-type diaper. After A1 and A2 and A3 and A4 in the figure 1 are butted, the pants-type absorbent product with a three-dimensional structure is formed. Fig. 2 shows a schematic transverse cross-sectional view of the pant diaper in the direction a-a of fig. 1. In order to distinguish the relationship between the layers of the absorbent article, the glue between the layers of fig. 2 is hidden and the spacing between the layers is shown in an appropriately enlarged manner.
As shown in fig. 1 and 2, an absorbent article such as a diaper is provided with a water-
In the existing absorbent products, the materials of the layers are fixed with each other by hot melting or gluing to form the product. The adhesive between the
The absorbent article shown in fig. 1, 2 also has a problem of insufficient absorption capacity. Specifically, the
With further reference to fig. 2, in the known absorbent article, the
Therefore, further improvement in the performance and the like of conventional absorbent articles such as disposable diapers is desired.
Disclosure of Invention
One of the objects of the present invention is to propose an absorbent article which is capable of solving at least the technical problem of how to achieve rapid absorption of foreign matter such as urine.
The present invention is achieved by an absorbent article of the following form. The absorbent article includes a topsheet, a backsheet, an absorbent body, and a containment flap. Wherein the facing layer is in direct contact with the wearer's skin and is configured to enable liquid to pass therethrough. The back layer and the surface layer are oppositely arranged and positioned on one side far away from the skin of a wearer, wherein the back layer is made of breathable and waterproof materials. The absorption body is arranged between the surface layer and the back layer and is used for absorbing and locking the liquid. The containment flaps include a fixed end fixed between the face layer and the back layer and a free end opposite the fixed end, and are configured to prevent leakage of the liquid from the lateral sides of the absorbent article.
Wherein the facing layer wraps around the absorbent body from the side close to the wearer's skin and forms an opening at the side remote from the wearer's skin, and the area of the facing layer close to the opening is attached to the fixed end of the cuff or to the backing layer.
Since the top sheet is joined to the absorbent body in the form of a "wrap around" the absorbent body, the absorbent body is held firmly inside the absorbent article even with a small amount of glue therebetween, which results in a large contact area of the absorbent body with the top sheet on the side facing the skin of the wearer.
In addition to this, only a partial area of the face layer on the side facing away from the wearer is attached to the containment barrier or the backing layer. Since the surface layer is not bonded to the backsheet or the leakage protection cuff in at least a partial region of the side, liquid such as urine can be smoothly guided from the surface layer to the surface of the absorbent body on the side facing away from the wearer's skin. Liquid can be absorbed on the respective side surfaces of the absorption body during the flow, i.e. both during the passage of liquid through the side surfaces of the absorption body which are close to the skin of the wearer, the side surfaces which are remote from the skin of the wearer and the lateral side surfaces, so that liquid can be absorbed into the absorption body at a higher speed and the wearer can more quickly be brought into a dry state. Furthermore, absorbent articles of this type are more advantageous in that liquid is directed uniformly to the respective edge positions of the absorption body, thereby increasing the absorption capacity of the absorption body.
According to a preferred embodiment of the invention, the area where the facing layer and the containment or backing layer are attached to each other extends from the edge side towards the opening. With the area for attachment of the facing layer being arranged as above, liquid is more readily led to the extreme end of the facing layer, as the area which hardens by the arrangement of the adhesive or by heat sealing, a larger area of the surface of the side of the absorption body facing away from the skin of the wearer can be in direct contact with the facing layer and absorb liquid directly.
According to a preferred embodiment of the invention, the fixed end of the containment flap is interposed between the facing layer and the back layer and is flush with the corresponding end of the facing layer in the transverse direction of the absorbent article.
In this case, the facing layer is attached to the containment barrier in the area facing away from the wearer's skin. In this case, the absorbent article on both the left and right sides of the opening has a uniform thickness, as compared with a case where the face sheet is directly attached to the water-repellent back sheet. Because the left and right sides of the opening are all the regions for directly fitting with the wearer, the arrangement with uniform thickness can avoid bringing uneven wearing feeling to the wearer.
According to a preferred embodiment of the invention, a longitudinal centre plane of the opening substantially coincides with a longitudinal centre plane of the absorbent article.
The extent of the region in the transverse direction where the facing layer and the containment or backing layer are attached to each other is a distance L1Comprises the following steps: l is less than or equal to 5%1L ≦ 20%. L, where L is an extension distance of the absorbent body in the transverse direction. The extension distance L is such that a firm joint between the layers is ensured1A maximum extension of the surface layer on the side of the absorption body facing away from the skin of the wearer can be ensured.
According to a preferred embodiment of the invention, the barrier extends from the fixed end around both lateral sides of the facing layer to the side of the top surface of the facing layer which is close to the skin of the wearer and a free end extends at said top surface, wherein said free end is configured as a fold having an opening towards the lateral side of the absorbent article. The bent portion includes a first portion extending inward of the top surface and a second portion extending in an opposite direction from an end of the first portion. The second portion is provided with at least one longitudinally extending elastic body at a position towards the edge of the absorbent article.
When the wearer wears the absorbent article, the inner side of the free end (the folded portion) is pressed in advance, and the second portion of the free end is thereby raised naturally in the direction perpendicular to the absorbent body. The containment flaps now more easily fulfil a leakproof function, whereby the absorbent product is able to fulfil a further object of the invention.
According to a preferred embodiment of the present invention, the extension distance D of the bent portion on the top surface along the transverse direction is 20mm ≦ D ≦ 30 mm. The second portion of the bending region can form a leakage prevention region of a suitable height in a direction perpendicular to the absorber. The leakage-proof area can not cause the liquid to be directly sprayed to the leakage-proof surrounding edge to overflow due to overhigh height; at the same time, the absorption rate of the absorption body is not reduced because the extension length is too long and the side close to the skin of a wearer is covered with more surface layers.
According to a preferred embodiment of the invention, the top layer contains a pH regulator selected from the group consisting of 0.05 to 1 wt% of tea polyphenols, 0.05 to 0.1 wt% of caprylhydroxamic acid or a mixture of both. More preferably, the pH adjusting agent is present at a concentration of 0.05 wt% caprylhydroxamic acid, or a mixture of 0.3 wt% tea polyphenol and 0.05 wt% caprylhydroxamic acid.
Wherein the dosage of the pH regulator is preferablyIs 7g/m2-10g/m2. The pH value of the pH value regulator is 4.5-5.5.
According to the surface layer of the form, the activity of urease can be effectively inhibited, the increase of the PH value is controlled, and the surface layer is ensured not to cause irritation to the skin of a wearer to the maximum extent even if urine and the like are left.
According to a preferred embodiment of the present invention, the absorbent article includes an elastic waist circumference for elastically attaching the absorbent article to a user, the elastic waist circumference includes a front waist region corresponding to an abdomen of the user and a rear waist region corresponding to a waist of the user, and a stretch magnification of the front waist region is lower than a stretch magnification of the rear waist region.
According to the conventional absorbent article, the elastic waist of some products is made of a single elastic body. The elastic waistline of part of the product has the characteristic of different girth lengths at different positions of the waistline of a human body in the height direction, and elastic bodies with different elasticity or lengths are arranged at the positions corresponding to different waistline heights. However, the above design also only takes into account the anatomical features. In the preferred embodiment described above, the inventors have found that, during breathing by a wearer such as an infant, the wearer may cause less pressure to be exerted on the absorbent article in the area corresponding to the abdomen by breathing. In the case where the front waistline region is set to have a small stretch ratio, the absorbent article worn on the user's body can produce a relatively uniform pressure feeling on the abdomen and back waistline of the user, thereby providing a more comfortable user feeling during use.
According to a preferred embodiment of the invention, the surface layer is spaced apart from the backing layer or the apron in a partial area of the side facing away from the skin of the wearer to form a free zone, and the free zone has an extension D1 in the transverse direction of: d1 is more than or equal to 5mm and less than or equal to 15 mm.
According to a preferred embodiment of the present invention, the main body includes an absorber covering sheet between the top sheet and the absorber, the absorber covering sheet being a hydrophilic SMS nonwoven fabric or a water absorbent paper.
According to a preferred embodiment of the invention, the width D2 of the opening is: d2 is not less than 15mm and not more than 25 mm.
According to a preferred embodiment of the present invention, the grammage FAW of the hydrophilic SMS nonwoven fabric is: FAW is more than or equal to 12gsm and less than or equal to 18 gsm.
According to a preferred embodiment of the present invention, the absorbent body includes fluff pulp, water-absorbent polymer resin particles, or ES fibers.
According to a preferred embodiment of the present invention, the surface layer is made of low water retention fibers with a water retention capacity of 20-50mg/15 ml.
According to a preferred embodiment of the invention, the absorbent article is a pant-type diaper which can be worn directly.
On the basis of the common general knowledge in the field, the preferred embodiments can be combined randomly to obtain the preferred examples of the invention.
Other systems, features and advantages of the invention will be or will become apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, features and advantages be included within this description and this summary, be within the scope of the invention, and be protected by the accompanying claims.
Drawings
Fig. 1 is a schematic perspective view of a conventional pant type diaper after being unfolded.
Fig. 2 is a schematic cross-sectional view along the transverse centerline a-a of fig. 1.
Fig. 3 is a schematic perspective view of a pant diaper according to the invention after deployment.
Fig. 4 is a schematic cross-sectional view along the longitudinal centerline B-B of fig. 3.
Fig. 5 is a schematic cross-sectional view according to the line C-C along the transverse centre line of fig. 3.
Fig. 6 is a schematic cross-sectional view of the diaper of the alternative embodiment of fig. 5.
Fig. 7(a) is a schematic view of a folded portion of the diaper of fig. 5 and 6 in an unused state.
Fig. 7(b) is a schematic view of the folded portion of the diaper just before contacting the leg of the wearer.
Fig. 7(c) -7(e) are schematic views of the folded part in different states after the diaper is worn.
FIG. 8 is a graph showing a comparison of data on the rewet amount of diapers according to different embodiments.
Fig. 9 is a data comparison graph of the absorbent body utilization rate of the diaper according to the different embodiment.
Fig. 10 is a graph showing a change in PH state of the diaper according to the different embodiment.
Fig. 11 is a schematic view of a diaper having dimensions indicated.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, is intended to be illustrative, and not restrictive, and it is intended that all such modifications and equivalents be included within the scope of the present invention.
In the present invention, the term "proximal" refers to the side closer to the wearer's skin, and "distal" refers to the side farther from the wearer's skin; the top side of the pant diaper in fig. 4-7 corresponds to the wearer's skin and the bottom side corresponds to the exposed side of the pant diaper. In the following description, directional terms such as "upper", "lower", "left", "right", etc., are used for illustration only, and directional terms are used for example, and not for limitation, and components of the present invention may be positioned in a variety of different orientations. "longitudinal" means the longitudinal direction of the diaper, and "transverse" means the width direction of the diaper, and the "longitudinal" is in a perpendicular relationship.
For convenience of explanation, the structure, material, and the like of a pants-type diaper as one type of absorbent article will be described below in an illustrative form, and it is understood that other types of absorbent articles such as a diaper, an incontinence protector, a sanitary napkin, and a diaper may be used with the same material and structure as the pants-type diaper, except that the structure for ensuring that the absorbent article can be worn is slightly different from the structure of the pants-type diaper.
As shown in fig. 3-6, wherein fig. 3 is a schematic view of an unfolded pant-type diaper according to a preferred embodiment of the present invention; FIG. 4 is a longitudinal cross-sectional view taken along longitudinal centerline B-B of FIG. 3; fig. 5, 6 are transverse cross-sectional views along the transverse centerline C-C of fig. 1, wherein fig. 5, 6 show transverse cross-sectional views of different embodiments.
As shown in fig. 3-6, the diaper 100 comprises a
The
The
Referring to fig. 5 and 6, the
In the diaper 100 shown in fig. 5, the
For the above attachment area S1, it may be formed by a filled paste; or by heat sealing both
It will be appreciated that since the
According to the present disclosure, when foreign matter such as urine flows to the
By virtue of locating attachment region S1 between facing
In the embodiment of fig. 5, 6, in conjunction with fig. 11, to ensure that liquid is able to flow the maximum distance on the distal surface of facing
With continued reference to fig. 5 and 11, the
Referring to fig. 6, which shows an alternative to fig. 5, in this embodiment the containment flaps 140 extend a short distance distally of the
The extension distance of the attachment region S3 and the free region S4 in fig. 6 can also be referred to the above description of fig. 5. In this embodiment, the attachment region S3 may be formed by filling an adhesive, heat sealing, or the like between the
With continued reference to fig. 5, 6 and 11, the total extension distance L in the transverse direction of the attachment zones S1, S3 between the facing
As for the free areas S2, S4 formed between the
As shown in fig. 5 or 6, the
The
Referring to fig. 7 in conjunction with fig. 5 or 6, wherein fig. 7(a) schematically shows the folded
Referring to fig. 11 in conjunction with fig. 5 and 6, the extension distance D in the transverse direction for the
Referring to fig. 3, the diaper 100 is provided with an elastic waist 160 for elastically attaching the absorbent article to a user. The elastic waist 160 includes a front waist region 161 corresponding to the abdomen of the user and a rear waist region 162 corresponding to the rear waist of the user, and the stretch magnification of the front waist region 161 is lower than that of the rear waist region 162. During respiration of a wearer such as an infant, the wearer may cause the diaper 100 to generate less pressure in an area corresponding to the abdomen by breathing. The elastic waist band 160 of the above form can produce a relatively uniform pressure feeling after being attached to the wearer, thereby providing a more comfortable user experience for the user.
When the diaper 100 is detached from the wearer's body, the excreta inside thereof easily overflow from the openings corresponding to the wearer's legs. In order to avoid such a situation, the diaper 100 is provided at the distal surface thereof with a disposal sticker 131 which has adhesiveness and is stuck together in a layered manner as shown in fig. 3 and 4. The exposed end portion of the disposal post 131 is not adhesive. After use, the user may pull the end of the discard post 131 so that the stacked discard posts 131 can be spread apart. Subsequently, the user wraps the unfolded disposal post 131 around the entire circumference of the diaper 100 such that the disposal post 131 is stuck end to end and the diaper 100 is thus wrapped in a small volume. At this time, the openings corresponding to the legs of the wearer are closed, and thus foreign matter does not overflow.
Preferably, the disposal post 131 is provided on the diaper 100 at a position corresponding to the back of the wearer.
According to the present disclosure, optionally, the diaper 100 is provided with the urine
With further reference to fig. 5, 6, according to a preferred embodiment, an absorbent
The different forms of the
referring to FIG. 8, the rewet performance of diapers 100 with different
In connection with examples 11 and 13, the smaller the width of the
As is clear from examples 11, 12, and 14, the use of the spunlace nonwoven fabric as the absorbent
According to the present application, the width D2 of the
The
The present disclosure also relates to a
It should be noted that the unit wt% of the concentration of tea polyphenol and caprylyl hydroxamic acid represents the weight ratio of tea polyphenol and caprylyl hydroxamic acid in the corresponding pH regulator. For example, 1 wt% of tea polyphenol means that the weight ratio of tea polyphenol in the pH adjustor is 1%, and the remaining component is distilled water. The dosage of the PH adjuster represents the weight of the PH adjuster applied per square meter of the facing.
The effect of the pH adjusting agent of each respective component will be described with reference to the following graph. The pH ratios of the examples are shown in the following table:
the weak acid nonwoven fabric used in the test was acidified to a pH of 4.93. The PH adjusting agent of each example was uniformly applied to each nonwoven fabric facing 110 by the coating process. The weight of the nonwoven
During the test, 5mL of urease solution which is prepared from citric acid-potassium hydroxide buffer solution and has the pH value of 6.7 is added to 1g of non-woven fabric to be tested. After 5 minutes of full contact, 40mL of artificial urine was added. The PH of the mixed solutions of the examples and comparative examples was then determined at various time points. The data of the PH value can be seen in fig. 10, in which the abscissa of fig. 10 represents time (min) and the ordinate represents the PH value.
As can be seen from examples 1 to 6, the acidified
As is clear from the test shown in fig. 10, the PH adjuster of the above form can preferably suppress the urease in urine and feces from decomposing urea to generate ammonia, and thus maintain the diaper 100 in a desired PH range.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Description of reference numerals:
paper diaper: 100, respectively;
surface layer: 110;
an absorber: 120 of a solvent;
back layer: 130, 130;
protecting: 140 of a solvent;
an absorber covering sheet: 150;
elastic waist circumference: 160;
opening: 112, a first electrode;
discarding the paste: 131;
urine wet display belt: 132. 133;
fixing end: 142;
a connecting part: 143;
free end, bending part: 144, 144;
elastomer: 145;
a first part: 146;
and a third part: 147;
a second part: 148;
attachment zones: s1, S3;
a free region: s2, S4;
front waistline region: 161;
a rear waistline region: 162.
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