阅读说明：本技术 开放型吸收性物品、吸收性物品的包装体及其制造方法 (Open absorbent article, absorbent article package, and method for producing same ) 是由 木下章惠 合田裕树 于 2020-11-27 设计创作，主要内容包括：本发明提供一种开放型吸收性物品、吸收性物品的包装体及其制造方法,能够抑制因使用前的习惯性弯折引起的侧漏的发生并且能够在使用前紧凑地收纳。开放型吸收性物品具有彼此正交的前后方向和宽度方向、覆盖穿着者的前腰身的前腰身区域、覆盖穿着者的后腰身的后腰身区域、配置于前腰身区域与后腰身区域之间的下裆区域、以及至少配置于下裆区域的吸收芯。吸收性物品以沿着宽度方向的宽度折线和沿着前后方向的前后折线为基点进行折叠。前后折线具有芯前后折线,该芯前后折线以吸收芯的肌肤面侧彼此相面对的方式对下裆区域的吸收芯进行折叠。(The invention provides an open type absorbent article, a package of the absorbent article and a manufacturing method thereof, which can prevent the occurrence of side leakage caused by habitual bending before use and can be compactly stored before use. The open-type absorbent article has a front waistline region covering a front waistline of a wearer, a rear waistline region covering a rear waistline of the wearer, a crotch region disposed between the front waistline region and the rear waistline region, and an absorbent core disposed at least in the crotch region. The absorbent article is folded with a width folding line along the width direction and a front-back folding line along the front-back direction as base points. The front-back folding line has a core front-back folding line that folds the absorbent core in the crotch region so that the skin surface sides of the absorbent core face each other.)

1. An open-type absorbent article having a front waistline region covering a front waistline of a wearer, a rear waistline region covering a rear waistline of the wearer, a crotch region disposed between the front waistline region and the rear waistline region, and an absorbent core disposed at least in the crotch region, the front and rear directions and the width direction being orthogonal to each other,

the absorbent article is foldable with a width folding line along the width direction and a front-back folding line along the front-back direction as base points,

the front-back folding line has a core front-back folding line that folds the absorbent core in the crotch region so that the skin surface sides of the absorbent core face each other.

2. The open absorbent article according to claim 1,

a pair of the core front and rear folding lines are provided across the center of the absorbent core in the width direction.

3. The open absorbent article according to claim 1 or 2, wherein,

the front-back folding line has an article front-back folding line which is located further to the outside in the width direction than the absorbent core in the unfolded state and folds the absorbent article so that the skin surface sides of the absorbent article face each other,

the core front and rear folding lines fold the absorbent core in a 1 st folded state folded with the article front and rear folding lines as base points.

4. The open absorbent article according to claim 1 or 2, wherein,

the width folding line folds the absorbent article in a 2 nd folded state folded with the core front and rear folding lines as base points.

5. The open absorbent article according to claim 1 or 2, wherein,

a pair of the width folding lines are provided at intervals in the front-rear direction.

6. A package of an absorbent article comprising the absorbent article according to claim 1 or 2 and a package sheet for individually packaging the absorbent article, wherein,

the package of the absorbent article is provided with temporary joining portions that are brought into contact with the absorbent article and the package sheet, respectively, and that temporarily join the absorbent article and the package sheet,

the bonding strength of the temporary bonding portion to the package sheet is higher than the bonding strength of the temporary bonding portion to the absorbent article.

7. The package of absorbent articles according to claim 6,

the temporary joint is disposed in a region overlapping the absorbent core.

8. The package of absorbent articles according to claim 6 or 7,

the absorbent article has standing leakproof gathers positioned closer to the skin than the absorbent core,

the leakage preventing gathers have a fixing portion fixed to a topsheet positioned on the skin surface side of the absorbent core, and a rising portion capable of rising with respect to the topsheet,

a pair of the width folding lines are provided at intervals in the front-rear direction with a center of the rising portion in the front-rear direction interposed therebetween,

at least a part of each of the temporary joining portions is disposed on the outer side in the front-rear direction than the width folding line.

9. The package of absorbent articles according to claim 6 or 7,

the absorbent article has standing leakproof gathers positioned closer to the skin than the absorbent core,

the leakage preventing gathers have a fixing portion fixed to a topsheet positioned on the skin surface side of the absorbent core, and a rising portion capable of rising with respect to the topsheet,

at least a part of the temporary joint portion is located further outward in the front-rear direction than the rising portion in the expanded state.

10. A method for manufacturing a package of an absorbent article having an open absorbent article and a package sheet, the open absorbent article having a front waistline region covering a front waistline of a wearer, a rear waistline region covering a rear waistline of the wearer, a crotch region disposed between the front waistline region and the rear waistline region, and an absorbent core disposed at least in the crotch region, the package sheet individually packaging the absorbent article, wherein the open absorbent article has a front-rear direction and a width direction orthogonal to each other,

the method for manufacturing the absorbent article package comprises the following steps:

a first step 1 of folding the absorbent core in the crotch region with a front and rear folding line as a base point so that the skin surface sides of the absorbent core face each other;

a 2 nd step of placing the absorbent article folded in the 1 st step on the wrapping sheet in the 2 nd step;

a 3 rd step of folding the packaging sheet along the core front-rear folding line in the 3 rd step after the 2 nd step; and

and a 4 th step of, after the 3 rd step, folding the packaging sheet and the absorbent article with a widthwise folding line extending in the widthwise direction as a base point in the 4 th step.

11. The method for manufacturing a package of absorbent articles according to claim 10,

in the 3 rd step, the folded package sheets are folded so as to overlap each other, and the overlapped package sheets are joined to each other by a package joining portion.

Technical Field

The present invention relates to an open absorbent article having a front waistline region, a back waistline region, and a crotch region, a package of the absorbent article, and a method for manufacturing the package.

Background

Patent document 1 discloses an open-type absorbent article having a front waistline region, a rear waistline region, and a crotch region. The open absorbent article in patent document 1 is stored in a bag-like packaging sheet in a state of being folded a plurality of times. Specifically, the open-type absorbent article is folded with the front and rear folding lines located on the outer side in the width direction of the absorbent core and along the front and rear direction as base points from an unfolded state in which the open-type absorbent article is not folded by the folding lines, and then, in a state in which the open-type absorbent article is folded with the front and rear folding lines as base points, the open-type absorbent article is folded with the width folding line located substantially at the center in the front and rear direction of the absorbent article and along the width direction as base points. In this way, the open-type absorbent article is stored in the package sheet in a state of being folded with the front-rear folding line and the width folding line as base points (see fig. 1 of patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2005-47523

Disclosure of Invention

In the open-type absorbent article thus configured, there is provided a habitual fold formed by a folding line folded before use. The width fold line is a fold line folded over the entire area of the absorbent core in the width direction so that the skin-facing sides face each other. Therefore, the widthwise folding line may deform so as to be separated from the crotch of the wearer over the entire widthwise region of the absorbent core, thereby causing side leakage. In particular, an absorbent article having a front waistline region, a back waistline region, and a crotch region has a shape that is not pressed against the body through a wearing article like a sanitary napkin, since the absorbent article itself has a region covering the body, and the habitual bending of the absorbent article itself easily affects the wearing state.

In the open absorbent article of patent document 1, the length in the front-rear direction in the folded state is about half that in the unfolded state, and the length in the width direction in the folded state is equal to or longer than the length in the width direction of the absorbent core. Therefore, the length in the front-rear direction and the width direction in the folded state is long, and it is difficult to compactly store the absorbent article during transportation.

Accordingly, an object of the present invention is to provide an open-type absorbent article having a front waistline region, a rear waistline region, and a crotch region, which can be stored compactly before use while suppressing the occurrence of side leakage due to habitual bending before use.

An open-type absorbent article according to one aspect includes a front waistline region covering a front waistline of a wearer, a back waistline region covering a back waistline of the wearer, a crotch region disposed between the front waistline region and the back waistline region, and an absorbent core disposed at least in the crotch region. The absorbent article can be folded with a width folding line along the width direction and a front-back folding line along the front-back direction as base points. The front-back folding line has a core front-back folding line that folds the absorbent core in the crotch region so that the skin surface sides of the absorbent core face each other.

An absorbent article package according to one aspect includes the absorbent article and a package sheet that individually packages the absorbent article. The package of the absorbent article is provided with temporary joining portions that are brought into contact with the absorbent article and the package sheet, respectively, and that temporarily join the absorbent article and the package sheet. The bonding strength of the temporary bonding portion to the package sheet is higher than the bonding strength of the temporary bonding portion to the absorbent article.

A method of manufacturing an absorbent article according to one aspect is a method of manufacturing a package of an absorbent article having an open absorbent article and a package sheet, the open absorbent article having a front waistline region covering a front waistline of a wearer, a rear waistline region covering a rear waistline of the wearer, a crotch region disposed between the front waistline region and the rear waistline region, and an absorbent core disposed at least in the crotch region, the front waistline region and the rear waistline region being orthogonal to each other, the package sheet individually packaging the absorbent article. The method for manufacturing the absorbent article package comprises the following steps: a first step 1 of folding the absorbent core in the crotch region with the front and rear folding lines as base points so that the skin surface sides face each other; a 2 nd step of placing the absorbent article folded in the 1 st folding step on the wrapping sheet in the 2 nd step; a 3 rd step of folding the packaging sheet along the core front-rear folding line in the 3 rd step after the 2 nd step; and a 4 th step of, after the 3 rd step, folding the packaging sheet and the absorbent article with a widthwise folding line extending in the widthwise direction as a base point in the 4 th step.

Drawings

Fig. 1 is a plan view of the absorbent article package in an unfolded state, as viewed from the skin-facing surface side.

Fig. 2 is a plan view of the absorbent article package in an unfolded state, as viewed from the non-skin-facing side.

Fig. 3 is a view for explaining a folded form of the package of the absorbent article shown in fig. 1.

Description of the reference numerals

1. A package of an absorbent article; 10. an open-type absorbent article; 31. an absorbent core; 50. a temporary joint; 60. leak-proof pleats; 63. a rising part; 100. packaging the sheet; FL, front and rear broken lines; FL1, 1 st front and back fold line (article front and back fold line); FL2, No. 2 front-back fold line (core front-back fold line); FW, width broken line.

Detailed Description

(1) Brief description of the embodiments

At least the following matters will be made clear from the description of the present specification and the drawings.

An open-type absorbent article according to one embodiment has a front waistline region covering a front waistline of a wearer, a back waistline region covering a back waistline of the wearer, a crotch region disposed between the front waistline region and the back waistline region, and an absorbent core disposed at least in the crotch region, the front waistline region and the back waistline region being orthogonal to each other in a front-back direction and a width direction. The absorbent article can be folded with a width folding line along the width direction and a front-back folding line along the front-back direction as base points. The front-back folding line has a core front-back folding line that folds the absorbent core in the crotch region so that the skin surface sides of the absorbent core face each other. At least the habitual fold formed by the core front and back fold lines is formed in the absorbent core. Since the core front-rear folding line is a folding line that is folded so that the skin surface sides of the absorbent article face each other, the region on the outer side in the width direction than the core front-rear folding line stands up toward the wearer by being bent habitually. Therefore, the side portion in the width direction of the absorbent core in the crotch region is deformed so as to rise toward the wearer by being bent habitually, and side leakage can be suppressed. Further, since the absorbent core is folded by the core front-rear folding line, the length of the absorbent article in the width direction in the folded state can be easily shortened, and the absorbent article can be compactly stored before use.

According to a preferred embodiment, a pair of the core front and rear folding lines may be provided with a center of the absorbent core in the width direction being interposed therebetween. An absorbent article such as a diaper is configured to hold excrement such as urine irregularly excreted, and is preferably configured to be arranged in the crotch region so as not to closely adhere to the body, unlike a structure in which menstrual blood intermittently excreted is held like a sanitary napkin. The region between the pair of core front and rear folding lines is erected outside the core front and rear folding lines, and the cross section along the width direction is formed in a cup shape. Therefore, a larger space for holding the body fluid can be ensured. The vicinity of the front and rear folding lines of the core is separated from the body by being bent habitually, and a space for holding body fluid can be secured.

According to a preferred aspect, the front-back folding line may have an article front-back folding line that is positioned further outward in the width direction than the absorbent core in the unfolded state and folds the absorbent article so that skin surface sides face each other, and the core front-back folding line may fold the absorbent core in a 1 st folded state folded with the article front-back folding line as a base point. According to this aspect, the absorbent article can be folded in the width direction by the article front-rear folding line and the core front-rear folding line, and the length of the absorbent article in the width direction before use can be further shortened. Further, the habitual bending formed by the front and rear folding lines of the article becomes a habitual bending in which the skin surface sides of the absorbent article face each other. The article can be raised toward the body side on both sides across the front and rear fold lines of the article in the width direction, and the fit when worn can be improved.

According to a preferred embodiment, the width folding line may fold the absorbent article in a 2 nd folded state folded with the core front and rear folding lines as base points. According to this aspect, the length of the absorbent article in the front-rear direction can be further shortened in a state where the length of the absorbent article in the width direction is shortened by folding the absorbent article using the width folding line as a base point. The absorbent article can be compactly stored before use. Further, since the folding is performed using the core front and rear folding lines and then the folding is performed using the width folding line as a base point, the habitual bending of the core front and rear folding lines is easily formed more strongly, and the folded state is easily maintained. Therefore, the effect of suppressing the side leakage by the habitual bending is more easily obtained.

According to a preferred embodiment, a pair of the width folding lines may be provided at an interval in the front-rear direction. According to this aspect, the length of the absorbent article in the front-rear direction can be further shortened, and the absorbent article can be compactly stored before use.

One embodiment of the open-type absorbent article package includes the absorbent article and a package sheet that individually packages the absorbent article. The package of the open absorbent article is provided with temporary joint portions that are brought into contact with the absorbent article and the package sheet, respectively, and that temporarily join the absorbent article and the package sheet. The bonding strength of the temporary bonding portion to the package sheet is higher than the bonding strength of the temporary bonding portion to the absorbent article. The relative positions of the package sheet and the absorbent article can be fixed by the temporary joining section, and folding can be performed stably. The temporary joint portion has a high joint strength with respect to the package sheet and a low joint strength with respect to the absorbent article. Therefore, when the absorbent article is peeled from the wrapping sheet during use, the temporarily joined portion is likely to remain on the wrapping sheet side. Since the temporary joint section does not adhere to the absorbent article during use, it is possible to suppress a sense of discomfort caused by the temporary joint section being disposed on the non-skin surface side of the absorbent article during use.

According to a preferred aspect, the temporary joint portion may be disposed in a region overlapping with the absorbent core. The absorbent core is also a relatively stiff member in the absorbent article. By fixing the region overlapping the absorbent core having relatively high rigidity to the package sheet by the temporary joining section, the positions of the absorbent article and the package sheet can be stabilized.

According to a preferred aspect, the absorbent article may have a standing leak-proof gather located on the skin side of the absorbent core, the leak-proof gather may have a fixing portion fixed to a top sheet and a standing portion capable of standing up with respect to the top sheet, the top sheet may be located on the skin side of the absorbent core, the pair of width folding lines may be provided at an interval in the front-rear direction with respect to a center in the front-rear direction of the standing portion, and at least a part of the temporary joining portion may be disposed at a position on the outer side in the front-rear direction with respect to the width folding lines. In the absorbent article, a region overlapping the temporary joint portion is applied with a force that stretches toward the wrapping sheet side in a deployed state when in use. Since the temporarily joined portion is disposed at a position further outward in the front-rear direction than the center in the front-rear direction of the rising portion of the leak-preventing gather, the temporarily joined portion is stretched toward the wrapping sheet side. In this case, since the temporary joining portion is disposed outside the wide folding line, the region outside in the front-rear direction of the wide folding line is more likely to be developed with the wide folding line as a base point. Therefore, the rising portion located between the width folding lines is easily raised. By improving the rising property of the leak-proof gathers, side leakage can be further suppressed.

According to a preferred aspect, the absorbent article may have raised leakage preventing gathers located on the skin side of the absorbent core, the leakage preventing gathers may have a fixing portion fixed to a top sheet and a raised portion which is raised with respect to the top sheet, the top sheet may be located on the skin side of the absorbent core, and at least a part of the temporary joining portion may be located on the outer side in the front-rear direction than the raised portion in the expanded state. In the absorbent article, a region overlapping the temporary joint portion is applied with a force that stretches toward the wrapping sheet side in the unfolded state. The region on the front-rear direction outer side than the rising portion of the leak-proof gather is pulled toward the wrapping sheet side by the temporary joining portion, whereby the rising portion is easily raised. By improving the rising property of the leak-proof gathers, side leakage can be further suppressed.

A method of manufacturing an open absorbent article according to one aspect is a method of manufacturing a package of an absorbent article having an open absorbent article having a front waistline region covering a front waistline of a wearer, a rear waistline region covering a rear waistline of the wearer, a crotch region disposed between the front waistline region and the rear waistline region, and an absorbent core disposed at least in the crotch region, the front waistline region and the rear waistline region being orthogonal to each other, and a packaging sheet that individually packages the absorbent article. The method for manufacturing the absorbent article package comprises the following steps: a first step 1 of folding the absorbent core in the crotch region with the front and rear folding lines as base points so that the skin surface sides face each other; a 2 nd step of placing the absorbent article folded in the 1 st folding step on the wrapping sheet in the 2 nd step; a 3 rd step of folding the packaging sheet along the core front-rear folding line in the 3 rd step after the 2 nd step; and a 4 th step of, after the 3 rd step, folding the packaging sheet and the absorbent article with a widthwise folding line extending in the widthwise direction as a base point in the 4 th step. After the absorbent article is folded in the 1 st step, the wrapping sheet is folded along the fold line of the absorbent article in the 3 rd step, whereby the temporarily folded absorbent article can be folded again. Therefore, it can be folded more compactly. In particular, the present invention can be suitably applied to an absorbent article having a relatively long length in the width direction, such as a disposable diaper.

According to a preferred embodiment, in the 3 rd step, the folded package sheets may be folded so as to overlap each other, and the overlapped package sheets may be joined to each other by a package joining portion. By joining the package sheets to each other via the package joining portion, the folded package sheet can be maintained in a folded state without being unfolded, and the absorbent article can be stored in a more compact manner.

(2) Open-type absorbent article and structure of absorbent article package

The open absorbent article 10 and the absorbent article package 1 according to the embodiment will be described in detail below with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic ones, and it should be noted that the ratio of each size and the like are different from the reality. Therefore, specific dimensions and the like should be determined with reference to the following description. In addition, the drawings may include portions having different dimensional relationships and ratios from each other.

Fig. 1 is a developed plan view of the absorbent article package 1 viewed from the skin-facing surface side, and fig. 2 is a developed plan view of the absorbent article package 1 viewed from the non-skin-facing surface side. The unfolded state is a state in which the sheet is not folded by any of the front-rear folding line FL and the width folding line FW, which will be described later. Fig. 1 and 2 are plan views showing an extended state in which the absorbent article 10 is extended to a state in which no gathers are formed. The absorbent article package 1 (hereinafter referred to as package 1) includes an open-type absorbent article 10 (hereinafter referred to as an absorbent article) and a package sheet 100 that individually packages the absorbent article 10. The open-type absorbent article refers to an absorbent article in which a side joining portion for joining the outer side portion of the waistline region is not formed, which will be described later, and is an absorbent article in which the outer side portion of the waistline region is joined by a fastening member such as a hook and loop fastener when worn. As the absorbent article 10, for example, an absorbent article can be exemplified.

Further, the outer side portion in the present invention means a portion occupying a certain range in the width direction W including an outer edge in the width direction W, and the outer side edge means an outer edge in the width direction W. The inner side portion in the present invention means a portion occupying a certain range in the width direction W including an inner edge in the width direction W, and the inner side edge means an inner edge in the width direction W. The front end portion and the rear end portion in the present invention are portions that occupy a certain range in the front-rear direction L including edges in the front-rear direction L, and the front end edge and the rear end edge are edges in the front-rear direction L. The outer end portion comprises a front end portion and a rear end portion, and the outer end edge comprises a front end edge and a rear end edge.

The absorbent article 10 may have a front-back direction L extending along the front and back body sides of the wearer, a width direction W orthogonal to the front-back direction L, and a thickness direction T extending along the skin-facing surface side T1 facing the wearer and the non-skin-facing surface side T2 facing the side opposite to the skin-facing surface side T1. The absorbent article 10 has a front waistline region S1, a back waistline region S2, and a crotch region S3. The front waistline region S1 is a region covering the front waistline (abdomen) of the wearer. The back waistline region S2 is a region covering the back waistline (back) of the wearer. The crotch region S3 is a region disposed between the front waistline region S1 and the back waistline region S2, and is a region covering the crotch of the wearer.

The absorbent article 10 may have fastening members that join the front waistline region S1 and the back waistline region S2 when worn. The fixing member may be constituted by a hook and loop fastener 90. The fastening tape 90 is configured to extend outward in the width direction W in the rear waistline region S2 and to be fixable to the non-skin surface of the front waistline region S1. The absorbent article 10 may have leg hole openings 35 that surround the leg holes of the wearer. The leg hole openings 35 are recessed inward in the width direction W at the outer side of the absorbent article 10. Leg hole openings 35 are disposed in crotch region S3. The crotch region S3 may be a region where the leg hole openings 35 are provided. In the absorbent article 10, a waist opening surrounding the waist of the wearer and a pair of leg hole openings surrounding the leg holes of the wearer are formed in a state where the fastening tape 90 is fastened. The waist opening portions may be formed by the front end edge of the front waistline region S1 and the rear end edge of the rear waistline region S2, and the leg hole openings may be formed by the leg hole opening portions 35.

The absorbent article 10 includes an absorbent core 31 containing an absorbent material. The absorbent core 31 is disposed at least in the crotch region S3. The absorbent core 31 comprises absorbent material such as comminuted pulp or superabsorbent polymer (SAP), or mixtures thereof. The absorbent core 31 may be covered by a core wrap, not shown. The absorbent body may be constituted by the absorbent core 31 and the core wrap. The core wrap may be made of tissue paper or SMS nonwoven fabric, and may be disposed on the skin-facing surface side T1 of the absorbent core 31 and the non-skin-facing surface side T2 of the absorbent core 31.

The absorbent article 10 has a skin side sheet 20 located closer to the skin-facing surface side T1 than the absorbent core 31. The skin side sheet 20 covers the absorbent core 31 and is disposed over the entire absorbent article 10. The skin side sheet 20 of the present embodiment includes a top sheet 21 and a pair of side sheets 22. In the absorbent article having the core wrap, the skin side sheet 20 is a sheet positioned closer to the skin-facing surface side T1 than the core wrap. The surface sheet 21 may be disposed across the center in the width direction W of the absorbent core 31. The side sheet 22 may be configured to cover both outer sides of the surface sheet 21. The front sheet 21 and the side sheet 22 may be made of, for example, nonwoven fabric or a liquid-permeable sheet such as an apertured plastic film.

The pair of side sheets 22 may constitute standing leakage preventing gathers 60. The leakproof gathers 60 are positioned on the skin side of the absorbent core 31. The leakage preventing gathers 60 have fixing portions 64 fixed to the front sheet 21 and rising portions 63 capable of rising with respect to the front sheet 21. The inner side portion of the side sheet 22 may be folded back to overlap. A leakage preventing elastic member 61 that extends and contracts in the front-rear direction L may be provided between the overlapped side sheets 22. The leakage preventing elastic member 61 may be formed of an elastic thread that stretches in the front-rear direction L. The rising portions 63 of the leak-proof gathers rise toward the skin-facing surface side T1 due to contraction of the leak-proof elastic member 61, and form a wall that prevents side leakage laterally of the center in the width direction of the absorbent article 10. The fixing portion 64 serves as a rising fulcrum of the rising portion 63. The side sheet 22 and the surface sheet 21 are joined together at the fixing portion 64. The rising portion 63 is a portion where the side sheet 22 is not joined to the front sheet 21 and can be contracted by the leakage-preventing elastic member 61, and the rising portion 63 does not include a portion where the leakage-preventing elastic member 61 in a non-stretched state is arranged. The fixing portion 64 includes a rear fixing portion 64A located on the rear side of the rising portion 63, a width fixing portion 64B located on the outer side in the width direction W than the rising portion 63, and a front fixing portion 64C located on the front side of the rising portion 63.

The absorbent article 10 has a non-skin side sheet 25 positioned closer to the non-skin surface side T2 than the absorbent core 31. The non-skin side sheet 25 covers the absorbent core 31 and is disposed over the entire absorbent article. The non-skin side sheet 25 of the present embodiment includes a back sheet 23 and an exterior sheet 24. In the absorbent article having the core wrap, the non-skin side sheet 25 is a sheet located closer to the non-skin surface side T2 than the core wrap. The back sheet 23 is a liquid-impermeable sheet, and a laminate nonwoven fabric mainly composed of a polyethylene sheet, polypropylene, or the like, a breathable resin film, a sheet obtained by joining a breathable resin film to a nonwoven fabric such as spunbond or spunlace, or the like can be used. The exterior sheet 24 may be provided on the non-skin-facing surface side T2 of the back sheet 23. The outer sheet 24 may be made of a liquid-permeable nonwoven fabric. The length of the back sheet 23 in the width direction W may be shorter than the length of the exterior sheet 24 in the width direction W, and the length of the back sheet 23 in the front-rear direction L may be shorter than the length of the exterior sheet 24 in the front-rear direction L.

The packaging sheet 100 is a sheet for individually packaging the absorbent article 10. The packaging sheet 100 may be folded together with the absorbent article 10 or may be folded independently of the absorbent article 10. The packaging sheet 100 is a sheet having a rectangular shape in an unfolded state. The packaging sheet 100 may be formed of a film or a nonwoven fabric. The absorbent article 10 and the package sheet 100 are folded with a width folding line FW along the width direction W and a front-back folding line FL along the front-back direction L as base points. The front-rear folding line FL may have a pair of 1 st front-rear folding lines FL1, a pair of 2 nd front-rear folding lines FL2, and a pair of 3 rd front-rear folding lines FL 3. The 1 st front-rear folding line FL1 constitutes the "article front-rear folding line" of the present invention, and the 2 nd front-rear folding line FL2 constitutes the "core front-rear folding line" of the present invention. The width folding line FW may have a 1 st width folding line FW1 and a 2 nd width folding line FW 2. The 1 st width folding line FW1 and the 2 nd width folding line FW2 may be folding lines that fold both the absorbent article 10 and the package sheet 100. The 1 st width folding line FW1 and the 2 nd width folding line FW2 may be provided in pairs at intervals in the front-rear direction L.

Next, a folding step in the method for manufacturing the absorbent article package 1 will be described with reference to fig. 3. The method of manufacturing the package may include a folding step described below, and a known step may be used for a step other than the folding step. In the following description of the folded form, the folded form of the package in which both the absorbent article 10 and the package sheet 100 are folded will be described, but in a modified example, only the absorbent article 10 may be folded. In the unfolded state (the state shown in fig. 3 a) of the absorbent article 10 and the package sheet 100, the absorbent article 10 is folded with the 1 st front-rear folding line FL1 as a base point. Fig. 3 (B) shows the 1 st folded state folded with the 1 st front-rear folding line FL1 as a base point. Next, the manufacturing method includes a 1 st step of folding the absorbent article 10 in the 1 st folded state with the 2 nd front-rear folding line FL2 as a base point. In the 1 st folded state, the 2 nd front-rear folding line FL2 is positioned further inward in the width direction W than the 1 st front-rear folding line FL 1. The 1 st step may be a step of folding the absorbent article 10 with the 2 nd front-rear folding line FL2 as a base point in the 1 st folded state, or may be a step of folding the absorbent article 10 with the 2 nd front-rear folding line FL2 as a base point in the unfolded state. The manufacturing method includes a 2 nd step of placing the absorbent article 10 folded in the 1 st step on the packaging sheet 100. Fig. 3 (C) shows a state after the 2 nd step in a 2 nd folded state folded from the 2 nd front-rear folding line FL 2. The manufacturing method has a 3 rd process of folding the packaging sheet 100 along the 3 rd front-rear folding line FL3 after the 2 nd process. The 3 rd step is to fold the packaging sheet 100 with the 3 rd front-rear folding line FL3 along the 2 nd front-rear folding line FL2 of the absorbent article 10 as a base point. The position in the width direction W of the 3 rd front-rear folding line FL3 substantially coincides with the position in the width direction W of the 2 nd front-rear folding line FL 2. In other words, the 3 rd front-rear folding line FL3 may be formed along the 2 nd front-rear folding line FL 2. Fig. 3 (D) shows a state of being folded with one 3 rd front-rear folding line FL3 of the pair of 3 rd front-rear folding lines FL3 as a base point, and fig. 3 (E) shows a 3 rd folded state of being folded with both the pair of 3 rd front-rear folding lines FL3 as a base point. In the 3 rd step, the folded package sheets 100 may be folded so as to overlap each other, and the overlapped package sheets 100 may be joined to each other by the package joining part 101. By joining the package sheets 100 to each other via the package joining portion 101, the folded package sheets can be maintained in a folded state without being unfolded, and the absorbent article 10 can be stored in a more compact manner.

Next, the manufacturing method includes, after the 3 rd step, a 4 th step of folding the package sheet 100 and the absorbent article 10 with a width folding line FW extending in the width direction W as a base point. In the 4 th step, the absorbent article 10 and the packaging sheet 100 are folded with the 1 st width folding line FW1 as a base point. Fig. 3 (F) shows the 4 th folded state folded from the 1 st width folding line FW 1. The 4 th step may include a step of folding the absorbent article 10 and the package sheet 100 with the 2 nd width folding line FW2 as a base point in the 4 th folded state. Fig. 3 (G) shows the 5 th folded state folded from the 2 nd width folding line FW 2. In this way, the absorbent article 10 can be individually packaged by the packaging sheet 100, and the package 1 can be formed compactly. The absorbent article 10 during use is formed into a habitual fold formed by the front and rear fold lines FL and the width fold line FW.

At least a portion of the front and back folding lines FL of the plurality of front and back folding lines may overlap with the absorbent core 31. In the present embodiment, the 2 nd front-rear folding line FL2 and the 3 rd front-rear folding line FL3 overlap the absorbent core 31, and the 1 st front-rear folding line FL1 does not overlap the absorbent core 31. By folding the absorbent core 31 with the front-rear folding line FL, the length of the absorbent article 10 in the width direction W in the folded state can be easily shortened, as compared with a structure in which the front-rear folding line FL does not overlap the absorbent core 31. Therefore, even if the length of the product in the width direction W is relatively long, the absorbent article 10 can be compactly stored before use.

The 2 nd front-rear folding line FL2 folds the absorbent core 31 in the crotch region S3 so that the skin-side surfaces of the absorbent core 31 face each other. In other words, the 2 nd front-back folding line FL2 is a folding line that overlaps the absorbent core 31 and folds the absorbent core 31 inward. Since the 2 nd front-rear folding line FL2 is a folding line in which the skin surface sides of the absorbent article 10 are folded so as to face each other, the region on the outer side in the width direction W than the 2 nd front-rear folding line FL2 stands up toward the wearer due to habitual bending during use. Therefore, the side portion of the absorbent core 31 in the width direction W in the crotch region S3 is deformed so as to rise toward the wearer by being bent habitually. Even when the absorbent core 31 is deformed so as to be separated from the crotch of the wearer by the habitual bending of the width folding line FW, the side of the crotch of the wearer can be covered by the habitual bending of the 2 nd front-rear folding line FL2, and side leakage can be suppressed. The 1 st front-rear folding line FL1 may overlap with the absorbent core 31 in at least the crotch region S3, or may overlap with the absorbent core 31 over the entire region of the absorbent core 31 in the front-rear direction L as in the present embodiment.

An absorbent article such as a diaper is configured to hold excrement such as urine irregularly excreted, and is preferably configured to be arranged in the crotch region so as not to closely adhere to the body, unlike a structure in which menstrual blood intermittently excreted is held like a sanitary napkin. The 2 nd front-rear folding line FL2 may be located at the center 31WC in the width direction W of the absorbent core 31. With this structure, the center 31WC of the absorbent core 31 in the width direction W is separated from the wearer and is deformed so as to rise toward the wearer side with the 2 nd front-rear folding line FL2 interposed therebetween. At this time, the vicinity of the 2 nd front-rear folding line FL2 is separated from the body, and a space for holding the bodily fluid can be secured. More preferably, a pair of 2 nd front-rear folding lines FL2 may be provided across the center 31WC of the absorbent core 31 in the width direction W. The center 31WC in the width direction W of the absorbent core 31 may coincide with the center in the width direction W of the absorbent article 10. With this configuration, the region located outside the 2 nd front-rear folding line FL2 stands up with respect to the region sandwiched by the pair of 2 nd front-rear folding lines FL2, and the cross section along the width direction is formed in a cup shape. The region sandwiched by the pair of 2 nd front-rear folding lines FL2 is easily arranged along the crotch region without being in close contact with the body, and a space for holding bodily fluids can be secured by the cup shape. Further, the region outside the 2 nd front-rear folding line FL2 stands up, and thus side leakage can be suppressed.

The 1 st front-rear folding line FL1 may be a folding line that is located further outward in the width direction than the absorbent core in the unfolded state and folds the absorbent article so that the skin surface sides of the absorbent article face each other. The 2 nd front-rear folding line FL2 can fold the absorbent core 31 in the 1 st folded state folded with the 1 st front-rear folding line FL1 as a base point. In a state where the absorbent article 10 is folded with the 1 st front-rear folding line FL1 as a base point and the length of the absorbent article 10 in the width direction is shortened, the length of the absorbent article 10 in the width direction can be further shortened by folding the absorbent article 10 with the 2 nd front-rear folding line FL2 as a base point. Therefore, the length of the absorbent article 10 in the width direction W before use can be further shortened. The habitual fold formed by the 1 st front-rear folding line FL1 is a habitual fold in which the skin surface sides of the absorbent article 10 face each other. Both sides across the 1 st front-rear folding line FL1 in the width direction W can be raised toward the body, and the fit when worn can be improved.

The packaging sheet 100 may be folded with the 3 rd front-rear folding line FL3 as a base point after the absorbent article 10 is folded with the 1 st front-rear folding line FL1 and the 2 nd front-rear folding line FL2 as a base point. With this configuration, the absorbent article 10 once folded can be folded again. Therefore, it can be folded more compactly. In particular, the present invention can be suitably applied to an absorbent article having a relatively long length in the width direction, such as a disposable diaper.

The width folding line FW can fold the absorbent article 10 in the 2 nd folded state folded with the 2 nd front-rear folding line FL2 as a base point. As described above, the 2 nd folded state may be a state in which the 1 st front-rear folding line FL1 and the 2 nd front-rear folding line FL2 are folded from the base point, and may be a state in which the 1 st front-rear folding line FL1 is not included, and the 2 nd front-rear folding line FL2 is only folded from the base point. By folding with the width folding line as a base point, the length of the absorbent article 10 in the front-rear direction L can be further shortened while the length of the absorbent article 10 in the width direction W is shortened. The absorbent article 10 can be compactly stored before use. Further, since the folding is performed with the 2 nd front-rear folding line FL2 and thereafter with the width folding line FW as a base point, the habitual bending of the 2 nd front-rear folding line FL2 is easily formed stronger and the folded state is easily maintained. Therefore, the effect of suppressing the side leakage by the habitual bending is more easily obtained.

A pair of width folding lines FW may be provided at intervals in the front-rear direction L. In other words, the width folding line FW may have a 1 st width folding line FW1 and a 2 nd width folding line FW2 that are divided in the front-rear direction L. The length of the absorbent article 10 in the front-rear direction L can be further shortened, and the absorbent article 10 can be compactly stored before use.

As shown in fig. 2, the package 1 may have a temporary joint portion 50. The temporary joining portion 50 is in contact with the absorbent article 10 and the package sheet 100, respectively, and temporarily joins the absorbent article 10 and the package sheet in a packaged state before use. By providing the temporary joining portion 50, the folded state of the absorbent article 10 can be maintained by the packaging sheet 100, and the absorbent article 10 can be stored more compactly before use. In addition, the relative positions of the package sheet 100 and the absorbent article 10 can be fixed by the temporary joining portions 50, and folding can be performed stably. The bonding strength of the temporary bonding portion 50 to the package sheet 100 is higher than the bonding strength of the temporary bonding portion 50 to the absorbent article 10. The temporary joint 50 has a high joint strength with respect to the package sheet 100 and a low joint strength with respect to the absorbent article 10. Therefore, when the absorbent article 10 is peeled off from the package sheet 100 at the time of use, the temporary joint portion 50 is likely to remain on the package sheet 100 side. Since the temporary joint section 50 is not attached to the absorbent article 10 during use, it is possible to suppress a sense of discomfort caused by the temporary joint section 50 being disposed on the non-skin surface side of the absorbent article 10 during use.

The temporary joint section 50 can temporarily join the non-skin surface of the absorbent article and the inner surface (absorbent article side surface) of the packaging sheet 100. The number of the temporary joint portions 50 may be at least 1, but preferably, a plurality of the temporary joint portions may be provided separately in the front-rear direction L and a plurality of the temporary joint portions may be provided separately in the width direction W. The temporary joining portion 50 may be an adhesive such as a hot-melt adhesive or a mechanical fastener such as a hook member. For example, it may be configured such that: a hook sheet having a hook member is joined to the inner surface of the packaging sheet, and the hook member is temporarily joined to the nonwoven fabric constituting the non-skin side sheet 25 of the absorbent article.

The temporary joint portion 50 may be disposed in a region overlapping with the absorbent core 31. The absorbent core 31 is also a relatively high rigidity member in the absorbent article 10. By fixing the region overlapping the relatively high-rigidity absorbent core 31 to the package sheet 100 by the temporary joining section 50, the positions of the absorbent article 10 and the package sheet 100 can be stabilized. The number of the temporary joining portions 50 of the present embodiment is 4, and the temporary joining portions are provided on both sides of the center 31WC of the absorbent core 31 in the width direction W and on both sides of the center 31LC of the absorbent core 31 in the front-rear direction L.

A pair of width folding lines FW may be arranged across the center of the rising portion 63 of the leakage preventing gather 60 in the front-rear direction L. The center in the front-rear direction L of the standing portion 63 of the leakage-preventing gather 60 may be the center in the front-rear direction L of the region where the leakage-preventing elastic member 61 is disposed in the contracted state, or the center in the front-rear direction L of the interval between the front end edge of the rear fixing portion 64A and the rear end edge of the front fixing portion 64C. At least a part of each of the temporary joints 50 may be disposed outside the width folding line FW in the front-rear direction L. More specifically, the 1 st width folding line FW1 is located rearward of the center of the rising portion 63 of the leak-preventing gather 60 in the front-rear direction L. Two temporary joints of the 4 temporary joints 50 are arranged on the rear side of the 1 st width folding line FW 1. The 2 nd width folding line FW2 is located on the front side of the 1 st width folding line FW1 and on the front side of the center of the rising portion 63 of the leak-preventing gather 60 in the front-rear direction L. Two temporary joints 50 of the 4 temporary joints 50 are arranged on the front side of the 2 nd width folding line FW 2. In the absorbent article 10, a force that stretches the packaging sheet 100 side is applied to the region overlapping the temporary joining section 50 in the unfolded state during use. The temporarily joined portion 50 is disposed at a position further outward in the front-rear direction L than the center in the front-rear direction L of the rising portion 63 of the leakproof gather 60, and is therefore stretched toward the packaging sheet 100 side by the temporarily joined portion 50. At this time, since the temporary joining section 50 is disposed outside the width folding line FW, the region outside the width folding line FW in the front-rear direction L is more easily expanded with the width folding line FW as a base point. Therefore, the rising portion 63 located between the width folding lines FW is easily raised. By improving the rising property of the leak-proof gathers 60, side leakage can be further suppressed.

At least a part of the temporary joint portion 50 may be located on the outer side in the front-rear direction L than the rising portion 63 of the leakproof gather 60 in the expanded state. The temporary joining portion 50 may be located on the outer side in the front-rear direction with respect to the rising portion 63 as a whole, or may be located on the outer side in the front-rear direction L than the region where the leakage preventing elastic member 61 is arranged in the contracted state. According to this structure, in the absorbent article, a force that stretches the package sheet 100 side is applied to the region overlapping the temporary joining section 50 in the unfolded state. The region on the outer side in the front-rear direction L than the rising portion 63 of the leakage preventing gather 60 is pulled toward the package sheet 100 by the temporary joining portion 50, whereby the rising portion 63 is easily raised. By improving the rising property of the leak-proof gathers 60, side leakage can be further suppressed.

The present invention has been described in detail with reference to the above embodiments, but it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and variations without departing from the spirit and scope of the present invention defined by the claims. Therefore, the description of the present specification is for illustrative purposes, and does not have any limiting meaning to the present invention.

In the above-described embodiment, the pair of 2 nd front-rear folding lines FL2 constituting the core front-rear folding line is provided, but it is not necessary to provide the pair. That is, at least one core front-rear folding line may be formed. In the above embodiment, after the absorbent article is folded with the 2 nd front-rear folding line FL2 as a reference point, the package sheet is folded with the 3 rd front-rear folding line FL3 as a reference point. However, in the modified example, both the absorbent article and the packaging sheet may be folded at the same time with the 2 nd front-rear folding line as a base point. In the modification, the article may be folded without the 1 st front-rear folding line FL1 constituting the front-rear folding line of the article with the 2 nd front-rear folding line FL2 as a base point in the unfolded state. In the modification, the 3 rd front-rear folding line FL3 for folding the package sheet 100 may not be provided, and the absorbent article 10 may be folded and then stored in a bag-shaped package sheet. In the modification, the width folding line FW may be provided not only with both the 1 st width folding line FW1 and the 2 nd width folding line FW2, or with a number of folding lines equal to or larger than the 3 rd width folding line. In the modification, the front-rear folding lines FL may be provided with the number of folding lines equal to or greater than the 4 th front-rear folding line.

The contents of the application No. 2019-217373 filed on 11/29/2019 are incorporated herein by reference in their entirety.

Industrial applicability

According to this aspect, it is possible to provide an open-type absorbent article that can suppress the occurrence of side leakage due to habitual bending before use and can be compactly stored before use.