JP2023098678A - Underpants-type absorbent article and absorbent article package - Google Patents

Abstract

To provide an absorbent article less likely to cause discomfort to a wearer and having favorable external appearance.SOLUTION: An underpants-type absorbent article (1) comprising an absorbent body (10), and a composite sheet (20) including a skin-side sheet (22) and a non-skin-side sheet (21) and constituting at least parts of a pair of leg opening edges, comprises a composite sheet bond part (60) for bonding the skin-side sheet (22) and the non-skin-side sheet (21), and an outer sheet (30) superposed on a non-skin-side surface of the non-skin-side sheet (21), where the outer sheet (30) includes a sheet bond part (31) bonded to the non-skin-side sheet (21), and a sheet non-bond part (32) not bonded to the non-skin-side sheet (21). In a stretched state in the composite sheet (20), a minimum value of a distance (L32) in a vertical direction of the sheet non-bond part (32) is larger than a minimum value of a distance (g60) between the leg opening edge (1be) and the composite sheet bond part (60).SELECTED DRAWING: Figure 3

Description

The present invention relates to a pants-type absorbent article and an absorbent article package.

Conventionally, in a pants-type (shorts) absorbent article having an absorbent main body and a waist member, a sheet member is provided on the surface (non-skin side) of the waist member to enhance functionality during use. It is For example, in Patent Document 1, by providing a band-shaped member on the surface (non-skin side) of the waist region of a pants-type disposable diaper, the fit around the waist is improved and the diaper can be fixed in a rolled state after use. discloses a technique for preventing exposure of a site soiled with excrement.

Japanese Patent Application Laid-Open No. 2000-102560

In recent years, there has been a growing demand from users for the design of absorbent articles. A technique of forming a dry edge portion without an adhesive and making wrinkles formed by the dry edge portion look like frills is attracting attention. In this case, if the dry edge portion is small, it is difficult to obtain a frill-like appearance, so it is preferable to form a three-dimensional and beautiful ruffle by enlarging the dry edge portion. On the other hand, if the dry edge portion of a material such as a nonwoven fabric constituting an absorbent article is too large, the dry edge portion may roll up and rub against the wearer's skin, causing discomfort to the wearer. . In particular, the leg openings of the pants-type absorbent article are likely to rub against the wearer's legs when walking or the like, which tends to make the wearer feel uncomfortable.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems described above, and an object of the present invention is to provide an absorbent article that is less likely to cause discomfort to the wearer and has a good appearance. .

The main invention for achieving the above object is an absorbent main body having a vertical direction, a horizontal direction, and a front-back direction that intersect with each other, and having a liquid-absorbing absorbent core, a skin-side sheet and a non-skin-side sheet. and a composite sheet forming at least part of a waist opening edge and at least a part of a pair of leg opening edges, wherein the skin side sheet and the non-skin side sheet The composite sheet has an outer sheet laminated on the non-skin side of the non-skin side sheet, and the outer sheet is joined to the non-skin side sheet and a sheet non-bonded portion that is adjacent to the sheet bonded portion in the vertical direction, has a predetermined width in the lateral direction, and is not bonded to the non-skin side sheet, and is in a stretched state. wherein, in the composite seat, the minimum distance in the vertical direction of the non-joint portion of the seat is larger than the minimum distance between the leg opening edge and the joint portion of the composite sheet. It is characterized by a pants-type absorbent article.
Other features of the present invention will become apparent from the description of the specification and accompanying drawings.

ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the absorbent article which is hard to cause discomfort to a wearer, and has a favorable appearance.

1 is a schematic perspective view of a napkin 1 according to a first embodiment; FIG. 1 is a plan view of napkin 1 in an unfolded and stretched state; FIG. FIG. 3 is a schematic cross-sectional view taken along the line AA of FIG. 2; 1 is a plan view of an absorbent main body 10; FIG. 1 is a schematic cross-sectional view of an absorbent main body 10. FIG. FIG. 3 is an enlarged view of a region X in FIG. 2 and is a view for explaining a dry edge formed on a leg opening edge 1be. It is a figure explaining the state of the dry edge of leg circumference opening edge 1be at the time of wearing the napkin 1. FIG. FIG. 3 is an enlarged view of a region Y in FIG. 2, and is a view for explaining a dry edge formed at the boundary between the skin-side sheet 22 and the non-skin-side sheet 21 in the front waist portion 20f. FIG. 4 is a diagram illustrating a joint portion between the absorbent body 10 and the composite sheet 20; It is a cross-sectional schematic diagram showing about the structure at the time of cutting|disconnecting the pant-shaped napkin 1 near the center of the left-right direction. It is a cross-sectional schematic diagram showing the 1st modification of the napkin 1. FIG. It is a cross-sectional schematic diagram showing the 2nd modification of the napkin 1. FIG. It is a figure explaining the folding method at the time of wrapping the napkin 1. FIG. It is a figure explaining the method of packaging the napkin 1 of the folded state. 1 is a plan view of napkin 2 in an unfolded and stretched state; FIG. It is a cross-sectional schematic diagram of the napkin 2 of an unfolded and extended state.

At least the following matters will become apparent from the descriptions of this specification and the accompanying drawings.
An absorbent main body having a liquid-absorbing absorbent core, a skin-side sheet and a non-skin-side sheet having vertical, horizontal, and front-back directions that intersect with each other, and at least part of a waist opening edge. and a composite sheet that constitutes at least a part of a pair of leg opening edges, and a composite sheet joint that joins the skin-side sheet and the non-skin-side sheet , the composite sheet has an outer sheet laminated on the non-skin side surface of the non-skin side sheet, the outer sheet includes a sheet joint portion joined to the non-skin side sheet, and the sheet in the vertical direction a sheet non-joint portion that is adjacent to the joint portion and has a predetermined width in the left-right direction and is not joined to the non-skin side sheet; A pants-type absorbent article, wherein the minimum distance between the non-joined sheet portions in the vertical direction is larger than the minimum distance between the edges and the joined composite sheet portions.

According to such a pants-type absorbent article, compared to the opposite case (when the dry edge in the vertical direction of the sheet non-joint portion is smaller than the dry edge formed at the leg opening edge) , the dry edge formed on the edge of the opening around the leg becomes relatively small, and it is suppressed that the dry edge rolls up and rubs against the wearer's skin (legs) during walking, etc., which is uncomfortable for the wearer. It can be made difficult to cause pleasure. In addition, since the dry edges formed on the outer sheet are relatively large, large frills are likely to be formed, and a pants-type absorbent article having a good appearance can be realized.

In such a pants-type absorbent article, in the composite sheet in a stretched state, the maximum distance between the leg opening edge and the composite sheet joint portion is greater than the maximum distance in the vertical direction of the sheet non-joint portion It is desirable that the minimum value of the distance is larger.

According to such a pants-type absorbent article, even if the distance between the leg opening edge and the composite sheet joint is not constant and the dry edge length of the leg opening edge is the maximum, , the dry edge (frill) formed on the outer sheet is formed larger. Therefore, a pants-type absorbent article having a better appearance can be realized.

In the pants-type absorbent article, the composite sheet includes a laminated portion in which the skin-side sheet and the non-skin-side sheet are laminated, and the skin-side sheet and the non-skin-side sheet are not laminated. and a non-laminated portion, and in the composite sheet in a stretched state, the sheet non-bonded portion is greater than the minimum distance between the boundary between the laminated portion and the non-laminated portion and the composite sheet bonded portion. It is desirable that the minimum value of the distance between the parts in the vertical direction is larger.

According to such a pants-type absorbent article, the dry edge formed at the boundary between the laminated part and the non-laminated part of the composite sheet is relatively small, and when worn, the dry edge does not touch the wearer's skin. Rubbing is suppressed, and it is possible to make it difficult for the wearer to feel discomfort. In addition, since the dry edges formed on the outer sheet are relatively large, large frills are likely to be formed, and a pants-type absorbent article having a good appearance can be realized.

In this underpants-type absorbent article, the absorbent main body has side sheets that are folded inward from the outside on both sides in the left-right direction, and the folded side sheets have inner sides in the left-right direction. In the absorbent body in a stretched state, the absorbent body has an end joint portion that joins an end portion to a sheet member facing the non-skin side in the thickness direction, and the inner end of the end joint portion in the left-right direction; It is preferable that the minimum distance between the inner ends in the left-right direction is larger than the minimum distance between the inner ends in the vertical direction.

According to such a pants-type absorbent article, the dry edges formed at the inner ends of the side sheets of the absorbent main body are relatively small, and the dry edges come into contact with the wearer's skin such as the crotch region and groin region. Rubbing is suppressed, and it is possible to make it difficult for the wearer to feel discomfort. In addition, since the dry edges formed at the sheet non-joint portions of the outer sheets are relatively large, large frills are likely to be formed, and the appearance of the pants-type absorbent article can be improved.

The pants-type absorbent article has a main body joint portion that joins the absorbent body and the composite sheet, and in a stretched state, the outer ends of the main body joint portion in the left-right direction and the absorbent main body It is desirable that the minimum distance of the sheet non-bonded portion in the vertical direction is larger than the minimum distance between the outer edge of the sheet in the horizontal direction.

According to such a pants-type absorbent article, the dry edges formed on both sides in the left-right direction of the absorbent main body are relatively small, and the dry edges are in contact with the wearer's skin such as the buttocks and stretched legs. Rubbing is suppressed, and it is possible to make it difficult for the wearer to feel discomfort. In addition, since the dry edges formed at the sheet non-joint portions of the outer sheets are relatively large, large frills are likely to be formed, and the appearance of the pants-type absorbent article can be improved.

In such a pants-type absorbent article, the distance in the vertical direction of the non-bonded portion of the sheet is greater than the maximum value of the height in the thickness direction of wrinkles formed on the non-skin side of the composite sheet in the natural state. It is desirable that the minimum value is larger.

According to such a pants-type absorbent article, the height of wrinkles formed on the non-skin side of the composite sheet is relatively low, and the wrinkles are more conspicuous than the frills. It is possible to suppress the occurrence of friction with a person's clothes. In addition, since the dry edges formed at the sheet non-joint portions of the outer sheets are relatively large, large frills are likely to be formed, and the appearance of the pants-type absorbent article can be improved.

In this pants-type absorbent article, the composite sheet has a front waistline portion and a back waistline portion, and the front waistline portion and the back waistline portion are mutually connected at both ends in the left-right direction. In the composite sheet having a pair of side joints to be joined together and in a stretched state, the distance between the outer end of the composite sheet in the left-right direction and the outer end of the side joint is greater than the minimum value of the distance It is desirable that the minimum value of the distance in the vertical direction of the sheet unjoined portion is larger.

According to such a pants-type absorbent article, the dry edges formed at the side joints are larger than the frills, which prevents the frills from becoming inconspicuous. As a result, the frills can be easily recognized by the user, and the appearance of the pants-type absorbent article can be improved.

In such an underpants-type absorbent article, it is desirable that the distance in the vertical direction of the sheet non-bonded portion in the stretched state is 5 mm or more and 25 mm or less.

According to such a pants-type absorbent article, since the distance (length) of the sheet non-bonded portion is 5 mm or more, wrinkles (frills) formed in the sheet non-bonded portion are less conspicuous, and the waist member is It is possible to prevent the wrinkles from becoming difficult to distinguish from other wrinkles formed on the surface. In addition, since the distance (length) of the sheet non-joint portion is 25 mm or less, it is possible to prevent the sheet non-joint portion from hanging down due to its own weight, making it difficult to form a three-dimensional frill.

In the pants-type absorbent article, at least one of the skin-side sheet and the non-skin-side sheet is folded back from the skin side to the non-skin side at the upper end of one side of the composite sheet, whereby the outer sheet is formed.

According to such a pants-type absorbent article, it is possible to reduce the trouble of preparing an additional material for forming the outer sheet and joining it to the composite sheet. In addition, the manufacturing process of the pants-type absorbent article can be made more efficient, for example, it is possible to form the sheet joint portion while arranging the elastic member in the folded portion. Therefore, it is possible to reduce the manufacturing cost and man-hours of the pants-type absorbent article.

In such a pants-type absorbent article, it is desirable that the one side is the front side in the front-rear direction.

According to such a pants-type absorbent article, frills are formed on the abdomen of the wearer, and the user (wearer) can easily see the frills. When the pants-type absorbent article is taken out of the package, the frills are arranged on the front side of the pants-type absorbent article. It can give a good impression to users.

In this pants-type absorbent article, at least one of the skin-side sheet and the non-skin-side sheet is folded back from the non-skin side to the skin side at the upper end of the back side of the composite sheet in the front-rear direction. It is desirable to have a rear folded portion, and at least a portion of the rear folded portion overlaps the absorbent main body in the vertical direction.

According to such a pants-type absorbent article, the rear upper edge of the absorbent main body is prevented from being directly pressed against the wearer's skin, which makes it difficult for the wearer to feel uncomfortable or uncomfortable. In addition, since the upper end portion of the rear side of the absorbent main body is covered with the rear folded portion, leakage of excretory fluid such as menstrual blood from the rear side of the absorbent main body (rear leakage) can be suppressed. can be done.

In the pants-type absorbent article, the rear folded portion has a rear sheet non-joined portion that is not joined to at least one of the composite sheet and the absorbent main body on the rear side in the front-rear direction. Preferably, in the stretched state, the length of the sheet non-bonded portion in the vertical direction is longer than the length of the rear sheet non-bonded portion in the vertical direction.

According to such a pants-type absorbent article, a relatively large frill is formed by the sheet non-joint portion on the front side of the pants-type absorbent article, thereby improving the appearance design. In addition, since the rear side sheet non-bonded portion is relatively small on the rear side and is less likely to rub against the wearer's skin, it is possible to prevent the wearer from feeling uncomfortable.

In such a pants-type absorbent article, the outer sheet is provided with a plurality of pressing portions that press the outer sheet in the thickness direction at a predetermined pitch, and in the stretched state, the sheet It is desirable that the length of the non-bonded portion in the vertical direction is longer than the pitch of the compressed portion.

According to such a pants-type absorbent article, since a plurality of fine pressed portions (embossments) are arranged on the surface of the outer sheet (sheet non-bonded portion), the pressed portions tend to form bending starting points. , the non-bonded portion of the sheet becomes easily deformable. Therefore, it is possible to easily form more natural and soft frills.

In the pants-type absorbent article, the composite sheet has a front waistline portion and a rear waistline portion, and the front waistline portion and the rear waistline portion are joined to both ends in the left-right direction. It is preferable that a pair of side joint portions be provided, and the sheet non-joint portion be continuous between the pair of side joint portions in the left-right direction.

According to such a pants-type absorbent article, since the sheet non-joint portion can be freely deformed in a wide range from one end side to the other end side in the left-right direction, the sheet non-joint portion is formed when it shrinks. The wrinkles are likely to have a more natural shape, and a frill with a soft texture can be formed.

In the pants-type absorbent article, the composite sheet has a front waistline portion and a rear waistline portion, and the front waistline portion and the rear waistline portion are joined to both ends in the left-right direction. A pair of side joints is provided, and a plurality of temporary fixing joints are provided at predetermined intervals for joining the composite sheet and the sheet non-joint portion between the pair of side joints in the left-right direction. It is desirable that

According to such a pants-type absorbent article, when the non-bonded portion of the sheet shrinks to form fold-like wrinkles (frills), the outer sheets are temporarily fixed at even intervals, so that the sheet The contraction width of the non-bonded portion tends to be uniform. This makes it easier to form uniform and beautiful ruffles.

An absorbent article package in which the pants-type absorbent article is folded and wrapped in a wrapping material, wherein at least a part of the non-skin side surface of the sheet non-bonded portion is in contact with the wrapping material. It is desirable that the product is packaged in good condition.

According to such an absorbent article package, at least a part of the surface of the non-skin side of the sheet non-bonded portion is in contact with the packaging material, so that the entire frill is rolled up. It is suppressed that a habit is attached. Therefore, uniform and beautiful ruffles are easily formed when the user opens the absorbent article package.

In such an absorbent article package, it is desirable that at least a part of the skin-side surface of the sheet non-joint portion is in contact with the packaging material.

According to such an absorbent article package, the entire frill is crushed in the thickness direction by packaging with a part of the skin-side surface of the sheet non-bonded portion being in contact with the packaging material. It is suppressed. Therefore, uniform and beautiful ruffles are easily formed when the user opens the absorbent article package.

===Embodiment===
As an example of an underpants-type (shorts-type) absorbent article according to an embodiment of the present invention, an underpants-type napkin 1 (hereinafter also simply referred to as "napkin 1") will be described.

<Basic structure of napkin 1>
FIG. 1 is a schematic perspective view of a napkin 1 according to the first embodiment. FIG. 2 is a plan view of the napkin 1 in an unfolded and stretched state. FIG. 3 is a schematic cross-sectional view taken along line AA of FIG.

The “stretched state” of the napkin 1 means that the entire napkin 1 (product The entire napkin 1 is stretched without wrinkles, specifically, it is a state where the dimensions of each member constituting the napkin 1 are the same or close to the dimensions of the member alone.

As shown in FIG. 1, the napkin 1 has "up-down direction", "left-right direction" and "front-back direction" which are orthogonal to each other. Moreover, as shown in FIG. 3, it has a "thickness direction" which is the direction in which each member is laminated. In the up-down direction, when the wearer wears the napkin 1, the torso side of the wearer is defined as "upper side", and the crotch side of the wearer is defined as "lower side". Further, of the front-to-rear directions, the side facing the wearer's abdomen when worn is defined as the "front side", and the side facing the wearer's back is defined as the "rear side". In addition, in the thickness direction, the side that comes into contact with the wearer's skin when the napkin 1 is worn by the wearer is defined as the "skin side", and the opposite side is defined as the "non-skin side".

Moreover, the napkin 1 has a "longitudinal direction" and a "lateral direction" orthogonal to each other in the unfolded state shown in FIG. The "vertical direction" is the direction along the vertical direction of the pants type, and the "horizontal direction" is the direction along the horizontal direction of the pants type.

The napkin 1 of this embodiment includes a liquid-absorbing absorbent main body 10 that absorbs liquid such as menstrual blood, and an exterior member arranged on the non-skin side of the absorbent main body 10, and is worn when the napkin 1 is worn. and a waist member 20 which is a part arranged around the waist of a person.

(Absorptive main body 10)
FIG. 4 is a plan view of the absorbent main body 10. FIG. FIG. 5 is a schematic cross-sectional view of the absorbent main body 10. As shown in FIG. As shown in FIG. 2, the absorbent body 10 of the present embodiment has a substantially rectangular shape in a plan view with the longitudinal direction (corresponding to the long side direction of the absorbent body 10) along the vertical direction of the napkin 1. As shown in FIG. 4 and 5, the absorbent main body 10 includes an absorbent core 11 extending in the vertical direction (vertical direction), a top sheet 12 arranged closer to the skin than the absorbent core 11, A second sheet 13 arranged between the top sheet 12 and the absorbent core 11, a back sheet 14 arranged on the non-skin side of the absorbent core 11, and a side arranged on the non-skin side of the back sheet 14. a seat 15;

The absorbent core 11 is a member that absorbs and retains liquid such as menstrual blood, and is formed of, for example, liquid-absorbing fibers such as pulp fibers mixed with superabsorbent polymer (SAP). The absorbent core 11 may be covered with a liquid-permeable sheet member (core wrap sheet) such as tissue paper or nonwoven fabric.

The top sheet 12 is a liquid-permeable sheet member that can come into contact with the wearer's skin when worn, and is made of, for example, a hydrophilic air-through nonwoven fabric or spunbond nonwoven fabric. The top sheet 12 allows the excreted menstrual blood or the like to permeate from the skin side to the non-skin side in the thickness direction to be absorbed by the absorbent core 11, and the menstrual blood or the like returns from the absorbent core 11 to the skin side. (So-called rewet) is suppressed.

The second sheet 13 is a sheet member having substantially the same function and structure as the top sheet 12 and is laminated on the non-skin side of the top sheet 12 . In the napkin 1, the width of the second sheet 13 in the left-right direction is longer than the width of the top sheet 12 in the left-right direction.

The back sheet 14 is an air-permeable and liquid-impermeable sheet member for suppressing leakage of liquid such as menstrual blood absorbed by the absorbent core 11 to the outside, and is formed of, for example, a resin film. .

The side sheet 15 is a sheet member laminated on the non-skin side of the back sheet 14, and is made of, for example, a hydrophobic nonwoven fabric such as an air-through nonwoven fabric. In this embodiment, as shown in FIG. 5 , the side sheets 15 extend outward on both sides in the left-right direction (horizontal direction) of the absorbent core 11 and are thick at both sides in the left-right direction of the absorbent main body 10 . It is folded from the non-skin side to the skin side in the width direction and from the outside to the inside in the left-right direction, and the folded ends 15t are arranged closer to the skin than the absorbent core 11 and the top sheet 12 are. On the skin side of the absorbent core 11 (top sheet 12), the ends 15t, 15t of the side sheets 15 are arranged on both sides in the left-right direction. When it moves in the direction, the movement of the menstrual blood or the like can be blocked by the ends 15t, 15t. That is, when the napkin 1 is worn, the end portions 15t, 15t of the side sheet 15 function like leak-proof walls, and lateral leakage of menstrual blood and the like can be suppressed. A part of the back sheet 14 may be folded along with the side sheets 15 toward the skin side of the absorbent core 11 (top sheet 12).

Further, the absorbent main body 10 is provided with a high density portion 17 in which the density of the absorbent core 11 is higher than that of the surrounding portion. The high-density portion 17 is formed by compressing each member constituting the absorbent main body 10 in the thickness direction. As shown in FIG. 4, the high-density portion 17 of the present embodiment is formed in a curved shape by arranging a plurality of dot-shaped compressed portions. By providing such a high-density portion 17, it is suppressed that the liquid-absorbent fibers of the absorbent core 11 are scattered and lose their shape. In addition, when the napkin 1 is worn, the high-density portion 17 serves as a starting point for bending, so that the absorbent core 11 is easily three-dimensionally deformed according to the shape of the wearer's body, and fits the wearer's body. easier.

In addition, the absorbent main body 10 is provided with a plurality of absorbent body elastic members 50 that expand and contract along the vertical direction (vertical direction). The absorbent body elastic member 50 is formed of, for example, thread rubber, and extends in the longitudinal direction (vertical direction) on the non-skin side of the absorbent core 11 (between the back sheet 14 and the side sheet 15 in FIG. 5). placed in a state. In this embodiment, as shown in FIGS. 4 and 5, a pair of center absorbent body elastic members 51 arranged in the center in the left-right direction and two pairs of side members arranged in both ends in the left-right direction A total of six absorber elastic members 50 of absorber elastic members 52 are provided. It is preferable that the expansion ratio of each of the absorbent body elastic members 50 (51, 52) is about 2.7 to 3.2 times. The "stretch ratio" of the elastic member refers to measuring a certain length of the elastic member in the stretched state, then cutting out the measured certain length, and using an organic solvent or the like to leave the elastic member alone. After the organic solvent is air-dried for 24 hours, the length of the elastic member in the natural state is measured and divided. When the napkin 1 is worn, the stretchability of the absorbent elastic member 50 makes it easier for the absorbent core 11 to be pushed up from the non-skin side to the skin side in the thickness direction, and the absorbent main body 10 (absorbent It is possible to make it easier to fit the elastic core 11). That is, the absorbent main body 10 can be easily brought into close contact with the crotch part of the wearer, and it is possible to prevent leakage of excretory fluid such as menstrual blood.

(Waist circumference member 20)

The waist member 20 is a composite sheet formed by laminating a plurality of sheet members. Hereinafter, in this specification, the waist member 20 is also referred to as a "composite sheet 20". The composite sheet 20 in this embodiment includes a non-skin-side sheet 21 and skin-side sheets 22 and 23 (see FIG. 3). Further, in the following description, in the longitudinal direction, the portion of the composite sheet 20 on the front side (abdominal side) of the central position CL will be referred to as the front waist portion 20f and the rear side (dorsal side) of the central position CL for convenience. is also called a rear waist portion 20b.

The non-skin-side sheet 21 is a non-stretchable sheet member arranged on the non-skin side of the composite sheet 20, and is formed of, for example, spunbond nonwoven fabric or SMS nonwoven fabric. In the present embodiment, the non-skin-side sheet 21 has a shape constricted inward in the left-right direction at the longitudinal central portion (the portion including the central position CL), as shown in plan view in FIG. there is

The skin-side sheet 22 is a stretchable sheet member (elastic sheet) laminated on the skin side of the non-skin-side sheet 21 on the longitudinal front side (abdominal side), and is formed of, for example, a stretchable nonwoven fabric. The “stretchable nonwoven fabric” is a nonwoven fabric that contains stretchable fibers and extensible fibers that are less stretchable than the stretchable fibers, and which has been subjected to an appropriate stretching treatment such as gear stretching. The skin-side sheet 22 of the present embodiment can use polyurethane-based elastomer fibers, which are a type of elastic thermoplastic elastomer, as stretchable fibers, and non-elastic thermoplastic resin as stretchable fibers. It is possible to use fibers of polypropylene (PP), which is a type of polyolefin resin.

The skin-side sheet 22 is joined to the non-skin-side sheet 21 by a plurality of welded portions 60 (see FIG. 2) arranged in a predetermined pattern. Elasticity is given along. That is, in the front waist portion 20f, the region where the skin-side sheet 22 is arranged is formed with a "waist elastic region GER" having elasticity in the left-right direction. In this embodiment, the welded portion 60 is formed using a known joining means such as ultrasonic welding. The welded portion 60 shown in FIG. 2 is formed in a pattern in which rectangular dots with sides of about 0.2 to 0.8 mm are regularly arranged at a pitch of about 1 to 3 mm. The shape and arrangement pattern of 60 are not limited to the example in FIG. Also, the welded portions 60 may be formed in different patterns for each region of the composite sheet 20 . For example, in the region overlapping the absorbent main body 10, the welded portions 60 may be formed in a pattern different from that in other regions.

The skin-side sheet 23 is a stretchable sheet member laminated on the skin side of the non-skin-side sheet 21 on the rear side (dorsal side) in the longitudinal direction. The skin-side sheet 23 has the same configuration as the skin-side sheet 22 . That is, the skin-side sheet 23 is formed of a stretchable nonwoven fabric, and is joined to the non-skin-side sheet 21 by a plurality of welded portions 60 (see FIG. 2) scattered about. As a result, in the area where the skin-side sheet 23 is arranged in the rear waist portion 20b, a "waist elastic region GER" having elasticity in the left-right direction is formed in the same manner as the front waist portion 20f.

The front waist portion 20f of the composite sheet 20 is formed with a front folded portion 30 in which the non-skin side sheet 21 is folded back from the skin side to the non-skin side at the upper end 20ef in the vertical direction (the front end in the vertical direction). (See Figure 3). Between the front folded portion 30 and the non-skin side sheet 21 in the thickness direction, a waist circumference upper end elastic member 25 such as thread rubber is provided so as to be stretchable along the left-right direction. By providing such a waist upper end elastic member 25, the fit on the front side (abdominal side) of the waist opening 1a is improved, and misalignment of the composite sheet 20 can be suppressed when the napkin 1 is worn.

In the napkin 1, the front folded portion 30 corresponds to the "outer sheet 30" laminated on the non-skin side (outer side) surface of the front waist portion 20f. The outer sheet 30 is joined to the non-skin side sheet 21 via an adhesive such as a hot-melt adhesive applied to the outer peripheral surface of the upper end elastic member 25 . That is, the outer sheet 30 (front folded portion 30) has a sheet joint portion 31 joined to the non-skin side sheet 21 of the front waist portion 20f at a portion where the waist upper end elastic member 25 is provided. . However, the adhesive that forms the sheet joint portion 31 is not applied to the upper waist elastic member 25, but is applied directly to a predetermined region of the outer sheet 30 or the non-skin side sheet 21. can be

In addition, the outer sheet 30 (front folded portion 30) has a sheet non-bonded portion 32 that is not bonded to the non-skin side sheet 21 at a portion adjacent to the sheet bonded portion 31 in the vertical direction. That is, the sheet non-bonded portion 32 is a so-called "dry edge" portion of the outer sheet 30 that is not coated with an adhesive or the like and is not bonded to other sheet members. The sheet non-bonded portion 32 has a predetermined width in the lateral direction, and in the sheet non-bonded portion 32, the outer sheet 30 can be freely deformed independently of the composite sheet 20 (the front waist portion 20f). be. When the napkin 1 is worn, when the composite sheet 20 shrinks in the left-right direction, the sheet non-bonded portions 32 are deformed to form large fold-like wrinkles, so that frills are formed around the waist as shown in FIG. It looks like it has been set up.

Further, the lower end portion of the outer sheet 30 may be provided with a temporary fixing joint portion 33 for temporarily fixing the outer sheet 30 to the front waist portion 20f. In FIG. 2 , a point-like temporary joint portion that joins the outer sheet 30 (sheet non-joining portion 32) and the front waist portion 20f at a position above the lower end of the outer sheet 30 by a predetermined distance (for example, about 4 mm). 33 are provided with a predetermined interval W33 in the horizontal direction. Temporary joint 33 uses a known adhesive means or welding means to spot-join the sheet members facing each other in the thickness direction (here, the outer sheet 30 and the non-skin side sheet 21) to the extent that they can be separated manually. This is the part where By providing such a temporary fixing joint portion 33, the entire sheet non-joint portion 32 is rolled up during the production of the napkin 1 or in the process of distributing the manufactured napkin 1 to the market, resulting in beautiful ruffles. It can be suppressed that it is difficult to be formed.

Note that the temporary fixing joint portion 33 may have a shape other than the dotted shape shown in FIG. 2 . For example, a configuration may be adopted in which a plurality of temporary fixing joints 33 linearly formed in the vertical direction (longitudinal direction) are arranged side by side at predetermined intervals W33 in the horizontal direction. Further, if there is another means for suppressing the sheet non-bonded portion 32 from curling up, the provisional bonding portion 33 may not necessarily be provided.

In this embodiment, a portion of the non-skin-side sheet 21 is folded back at the upper end 20ef of the front waistline portion 20f, and laminated on the non-skin side surface of the non-skin-side sheet 21 to form an outer sheet 30 (front folded portion 30). was formed, the outer sheet 30 may be a sheet member different from the non-skin side sheet 21 . That is, the outer sheet 30 may be formed by laminating a separate sheet member (non-woven fabric or the like) on the non-skin side of the non-skin side sheet 21 and joining a part of it.

On the other hand, in the rear waist portion 20b of the composite sheet 20, as shown in FIG. 3, the non-skin side sheet 21 extends from the non-skin side to the skin side at the upper end 20eb in the vertical direction (the rear end in the vertical direction). A rear-side folded portion 40 folded back is formed. A part of the skin-side sheet 23 may be folded together with the non-skin-side sheet 21 at the rear-side folded portion 40 . In the rear side folded portion 40, between the skin side sheets 23, 23 folded back at the upper end 20eb in the thickness direction, a waist upper end elastic member 25 such as a thread rubber is arranged in the left-right direction like the front waist portion 20f. It is provided in multiple numbers so that expansion and contraction is possible along. By providing such a waist upper end elastic member 25, the fit on the rear side (dorsal side) of the waist opening 1a is improved, and misalignment of the composite sheet 20 can be suppressed when the napkin 1 is worn.

The rear folded portion 40 has a rear sheet joint portion 41 joined to at least one of the rear waist portion 20b and the absorbent main body 10 on the rear side (dorsal side) in the front-rear direction (thickness direction). there is Further, a portion adjacent to the back sheet joint portion 41 in the vertical direction has a back sheet non-joint portion 42 that is not joined to at least one of the back waist portion 20b and the absorbent main body 10 .

When forming the underpants-shaped napkin 1, the absorbent body 10 and the composite sheet 20 are vertically folded from the unfolded state shown in FIG. It is folded in two in the direction (front-rear direction). In the folded state, both lateral (right and left) ends 20fe, 20fe of the front waist portion 20f and both lateral (right and left) ends 20be, 20be of the rear waist portion 20b, which are overlapped in the front and rear direction, are sealed. The side joints 20we are formed by joining using known joining means such as welding. As a result, the double-folded composite sheet 20 (the waist portions 20f and 20b) is annularly connected on the front side (abdominal side) and the rear side (dorsal side) to form one waist opening 1a and one waist opening 1a as shown in FIG. A pair of leg openings 1b, 1b are formed to form a pants-type (shorts-type) napkin 1. - 特許庁

<Regarding the dry edge formed on the napkin 1>
As described in FIG. 3, in the napkin 1 of the present embodiment, the outer sheet 30 (front folded portion 30) is attached to the non-skin side (non-skin side sheet 22) in the front waist portion 20f of the composite sheet 20 (girth member 20). ) are stacked. A portion of the outer sheet 30 is joined to the non-skin side sheet 21 via the sheet joint portion 31, but the sheet non-joint portion 32 vertically adjacent to the sheet joint portion 31 is joined to the non-skin side sheet 21. Not dry edges. Therefore, when the napkin 1 is worn, the stretchable front waist portion 20f shrinks in the lateral direction due to the waist elastic region GER, whereas the sheet non-bonded portion 32 does not easily contract in the lateral direction and is folded. Multiple wrinkles are formed, giving an appearance like frills.

In the outer sheet 30 (front folded portion 30), it is desirable that the dry edge formed in the sheet non-bonded portion 32 has a certain size. For example, in FIG. 3, if the length L32 in the vertical direction (longitudinal direction) of the sheet non-bonded portion 32 (dry edge) of the outer sheet 30 is too small, the frill formed by the dry edge is less noticeable and visible to the user. It may become difficult to

Specifically, in the napkin 1 in the stretched state, the length L32 in the up-down direction (longitudinal direction) of the sheet non-bonded portion 32 is preferably 5 mm or more and 25 mm or less. When the length L32 of the sheet unbonded portion 32 is shorter than 5 mm, the wrinkles (frills) formed in the sheet unbonded portion 32 are small and inconspicuous, and are formed on the surface of the composite sheet 20 (front waist portion 20f). It becomes difficult to distinguish from other wrinkles. On the other hand, if the length L32 of the sheet non-bonded portion 32 is longer than 25 mm, the sheet non-bonded portion 32 may hang down due to its own weight, making it difficult to form a three-dimensional frill. On the other hand, by setting the length L32 of the sheet non-bonded portion 32 to 5 mm or more and 25 mm or less, when the composite sheet 20 (the front waist portion 20f) contracts, a moderately sized frill is three-dimensionally formed. can be made easier. This makes it easier for the user to visually recognize the beautiful frills.

On the other hand, the composite sheet 20 (the waist member 20) has a structure in which the non-skin side sheet 21 and the skin side sheet 22 (23) are laminated and joined in the thickness direction. Dry edges may form at the joint ends. For example, the non-skin side sheet 21 and the skin side sheet 22 (23) are joined at the leg opening edge 1be (hereinafter also simply referred to as "opening edge 1be"), which is the outer edge of the leg opening 1b of the napkin 1. No dry edge may be formed. FIG. 6 is an enlarged view of the region X in FIG. 2, and is a view for explaining the dry edge formed on the leg opening edge 1be.

In the napkin 1, the leg opening 1b is a strip-shaped sheet member in which the non-skin-side sheet 21 and the skin-side sheet 22 (23) are joined to each other by a welded portion 60 (corresponding to a "composite sheet joining portion"). It is formed by cutting a predetermined area of the (composite sheet). In other words, a cutting line obtained by cutting out the leg opening 1b from the rectangular composite sheet becomes the opening edge 1be. Then, in the composite sheet 20, the area represented by the distance g60 between the opening edge 1be and a welding portion 60 arranged adjacent to the opening edge 1be is the non-skin side sheet 21 and the skin. It becomes a dry edge that is not joined to the side sheet 22 . In other words, in the composite sheet 20, the distance g60 between the opening edge 1be and the welded portion 60 (composite sheet joint portion) is the length of the dry edge formed on the leg opening edge 1be.

Here, the plurality of welded portions 60, 60, . Therefore, when the composite sheet is cut to form the opening edge 1be, the distance g60 between the opening edge 1be and the welded portion 60 is different for each of the plurality of welded portions 60 provided. For example, when the opening edge 1be passes through a position overlapping the welded portion 60, the distance g60 is zero, and the length of the dry edge at the opening edge 1be is zero at that portion. On the other hand, as the opening edge 1be passes through a position farther from the welded portion 60, the distance g60 becomes longer, and the dry edge at the opening edge 1be also becomes larger accordingly.

In such a pants-type napkin 1, it is desirable that the dry edge formed on the leg opening edge 1be be as small as possible. FIG. 7 is a diagram illustrating a dry edge state of the leg opening edge 1be when the napkin 1 is worn.

When the napkin 1 is worn, the skin-side sheet 22 (23) of the composite sheet 20 (the waist member 20) is in contact with the wearer's body (skin). At this time, if a dry edge is formed at the outer edge (opening edge 1be) of the composite sheet 20, a part of the sheet member forming the composite sheet 20 may be rolled up at the dry edge. In FIG. 7, a dry edge is formed in a region of length g60 from the opening edge 1be at the lower end of the composite sheet 20 (leg opening 1b). It's curled up on the side. The skin-side sheet 22 (23) that has been turned up is sandwiched between the wearer's skin and the composite sheet 20 (the waist member 20), and rubs against the wearer's skin as the wearer moves his/her body. It is easy to cause discomfort and discomfort.

In particular, the leg openings 1b of the composite sheet 20 may rub against the leg openings of the wearer every time the wearer moves his or her legs during walking or the like. If so, the wearer is likely to feel discomfort or the like. Therefore, it is desirable to shorten the length (g60) of the dry edge formed on the leg-hole opening edge 1be as much as possible so as to make it difficult for the wearer to feel discomfort.

From these things, in the napkin 1 of this embodiment, in the composite sheet 20 in the stretched state, the sheet non The minimum value of the distance (L32) in the vertical direction of the joint 32 (frill) is adjusted to be larger (L32>g60). With such a configuration, compared to the opposite case (L32<g60), in the composite sheet 20, the dry edge (g60) formed at the opening edge 1be of the leg opening 1b is relatively small, The dry edge is prevented from rubbing against the wearer's skin (legs) during walking or the like, making it difficult for the wearer to feel discomfort. Also, since the dry edge (L32) formed on the outer sheet 30 is relatively large, large frills are likely to be formed, and the napkin 1 having a good appearance can be realized.

Note that the above relationship (L32>g60) is the same even when the composite sheet joint portion is formed using a joining means other than the welding portion 60. FIG. For example, when the non-skin-side sheet 21 and the skin-side sheet 22 (23) are formed using an adhesive means using an adhesive such as a hot-melt adhesive, the composite formed by the adhesive It is preferable that the dry edge length L32 of the sheet non-bonded portion 32 of the outer sheet 30 is longer than the minimum value of the distance g60 between the sheet bonded portion and the opening edge 1be.

Further, as described with reference to FIG. 6, the distance g60 between the opening edge 1be and the composite sheet joint portion may vary in length depending on the arrangement of the welded portion 60 and the opening edge 1be. Therefore, in the composite sheet 20 in the stretched state, the minimum value of the distance (L32) in the vertical direction of the sheet non-bonded portion 32 is larger than the maximum value of the distance (g60) between the opening edge 1be and the composite sheet bonded portion. should be large.

In this embodiment, the maximum value of the dry edge length g60 of the opening edge 1be is the maximum length of the pitch between the adjacent welded portions 60, 60, and is approximately 3 mm. On the other hand, since the length L32 of the sheet non-bonded portion 32 (frill) of the outer sheet 30 is 5 mm or more and 25 mm or less, the minimum value of L32 is approximately 5 mm. Therefore, even when the dry edge length g60 of the opening edge 1b is maximized, the relationship of (L32>g60) is maintained. This makes it difficult for the wearer to feel discomfort at the leg opening 1b, and at the non-joint portion 32 of the sheet, large ruffles are likely to be formed, and the appearance of the napkin 1 can be improved.

The relationship between the size of the frill and the dry edge formed on the opening edge 1be of the leg opening 1b has been described. A similar relationship holds for . FIG. 8 is an enlarged view of the region Y in FIG. 2, and is a view for explaining the dry edge formed at the boundary between the skin-side sheet 22 and the non-skin-side sheet 21 in the front waist portion 20f. .

As shown in FIGS. 2 and 3, the skin-side sheet 22 (23) forming the composite sheet 20 (the waist member 20) is longer than the non-skin-side sheet 21 in the vertical direction (longitudinal direction). A short, dry edge may be formed at the lower end of the skin-side sheet 22 (23). In FIG. 8 , the skin-side sheet 22 and the non-skin-side sheet 21 are not joined in a region represented by a distance g60 between the welded portion 60 (composite sheet joining portion) and the lower end 22eb of the skin-side sheet 22. It has a dry edge. That is, a dry edge is formed at the boundary between the laminated portion where the skin-side sheet 22 and the non-skin-side sheet 21 are laminated and the non-laminated portion where both are not laminated. Since this area is a part that contacts the wearer's skin when the napkin 1 is worn, if the dry edge formed at the boundary is large, the dry edge will roll up in the same manner as described with reference to FIG. It rubs against the wearer's skin and may cause discomfort to the wearer.

In contrast, in the napkin 1 of the present embodiment, the boundary between the laminated portion and the non-laminated portion of the skin-side sheet 22 (23) and the non-skin-side sheet 21 (in FIG. 8, the lower end 22eb of the skin-side sheet 22). and the minimum value of the distance (L32) in the vertical direction of the sheet non-bonded portion 32 (frill) of the outer sheet 30 is larger than the minimum value of the distance g60 between the welded portion 60 (composite sheet bonded portion). (L32>g60). As a result, the dry edge formed at the boundary (22eb) between the laminated portion and the non-laminated portion of the composite sheet 20 becomes relatively small, and when the napkin 1 is worn, the dry edge rolls up and rubs against the wearer's skin. It is possible to prevent the wearer from feeling uncomfortable. In addition, since the dry edge (L32) formed in the sheet non-bonded portion 32 (ruffle) is relatively large, large ruffles are likely to be formed, and the napkin 1 having a good appearance can be realized.

In addition, although the dry edge formed on the lower end 22eb of the skin-side sheet 22 is described in FIG. The same is true for other dry edges formed on the boundary between For example, in FIG. 3, when the boundary between the laminated portion and the non-laminated portion is formed at the upper end portion (near 20ef) of the skin-side sheet 22, the dry edge length (g60) at the boundary is It should be longer than the dry edge (L32) formed on the outer sheet 30 (frill).

In addition, in the composite sheet 20 (the waist member) of the napkin 1, a dry edge is also formed on the laterally outer side of the side joint portion 20we that joins the front waist portion 20f and the rear waist portion 20b. As described with reference to FIG. 2, in the composite sheet 20 (the waist member), the left-right ends 20fe of the front waist portion 20f and the left-right ends 20be of the rear waist portion 20b are superimposed and joined together in the thickness direction. It has a side joint portion 20we that has been formed. The side joints 20we are spaced inward by a predetermined distance from the outermost ends in the left-right direction of the composite sheet 20 (the front waistline 20f and the rear waistline 20b). That is, in the area represented by the distance g20we between the laterally outer edge of the composite sheet 20 in the stretched state and the laterally outer edge of the side joint portion 20we, the front waistline portion 20f and the rear waistline portion 20b is not joined, a dry edge is formed (see FIG. 2).

As shown in FIG. 1, the side joint portion 20we is formed to extend long in the vertical direction. There is a risk that the frills formed by will become less noticeable. In contrast, in the present embodiment, the minimum value of the length g20we of the dry edge formed on the outer side of the side joint portion 20we is the minimum value of the distance (L32) in the vertical direction of the sheet non-joint portion 32 (frill). (L32>g20we). As a result, compared to the opposite case (L32<g20we), the side joints 20we are less conspicuous and the frills are more easily recognized by the user. Therefore, the appearance of the napkin 1 can be improved.

Next, dry edges formed on the absorbent main body 10 will be described. As shown in FIG. 5 , end portions 15t, 15t where the side sheet 15 is folded are arranged on both lateral side portions of the skin side surface of the absorbent body 10 . The side sheet end portions 15t, 15t are joined to the sheet member (the top sheet 12 in FIG. 5) facing the non-skin side in the thickness direction via the end joint portion 71. As shown in FIG. The end joints 71 are formed by applying an adhesive such as a hot-melt adhesive in a belt shape along the longitudinal direction (longitudinal direction of the absorbent main body 10). At this time, in the left-right direction (horizontal direction), in the area represented by the distance g15t between the inner end 71ei of the end joint portion 71 and the tip (inner end) 15te of the side sheet end 15t, the side sheet end 15t and the top sheet 12 are not joined. That is, a dry edge is formed at the tip (inner end) in the left-right direction of the side seat end 15t.

Side sheet end portions 15t of the absorbent main body 10 are arranged closer to the skin than the top sheet 12 (see FIG. 5), and are portions that come into contact with the wearer's body (skin) when the napkin 1 is worn. Therefore, if a dry edge is formed at the tip (inner end) of the side sheet end 15t, the dry edge may roll up and rub against the wearer's skin, causing discomfort or discomfort to the wearer. There is In particular, the side sheet end portion 15t is a portion that comes into contact with sensitive parts such as the wearer's crotch and groin when the napkin 1 is worn. .

Therefore, in the napkin 1, in the absorbent body 10 in the stretched state, the minimum value of the dry edge length g15t formed at the tip of the side sheet end 15t (the inner end in the left-right direction) is the sheet non-bonded portion. 32 (frill) is adjusted to be smaller than the minimum value of the distance (L32) in the vertical direction (L32>g15t). As a result, compared to the opposite case (L32<g15t), the dry edge (g15t) formed on the side sheet end portion 15t of the absorbent main body 10 is relatively small, and the dry edge is formed on the wearer's skin. It is possible to prevent the wearer from rubbing against (the crotch portion, the groin portion, etc.), thereby making it difficult for the wearer to feel discomfort. In addition, since the dry edge (L32) formed on the outer sheet 30 is relatively large, large frills are likely to be formed, and the appearance of the napkin 1 can be improved.

Further, in the napkin 1, a dry edge may be formed also at the joint portion between the absorbent main body 10 and the composite sheet (waist member) 20. As shown in FIG. 9A and 9B are diagrams for explaining a joint portion between the absorbent main body 10 and the composite sheet 20. FIG. In FIG. 9, in the composite sheet 20 in the stretched state, the main body joining portion 80 for joining the absorbent main body 10 is indicated by hatching. The body joint portion 80 is formed by applying an adhesive such as a hot-melt adhesive to a predetermined area (the shaded area in FIG. 9) of the composite sheet 20 or the absorbent body 10 . It should be noted that the adhesive that forms the main body joint portion 80 may not be uniformly applied to the entire hatched portion in FIG. 9 . For example, the adhesive may be applied to the region indicated by the hatched portion in FIG. 9 by known spiral coating, Ω coating, or the like.

In the left-right direction (horizontal direction) of FIG. 9 , the adhesive is not applied in the region represented by the distance g80 between the outer edge of the absorbent body 10 and the outer edge of the body joint portion 80 . That is, in this region (g80), a dry edge is formed in which the composite sheet 20 is not joined to the lateral ends of the absorbent body 10. As shown in FIG. The left-right end regions of the absorbent body 10 are portions that come into contact with the wearer's buttocks and stretched legs when the napkin 1 is worn. If rubbing occurs, the wearer may feel uncomfortable or uncomfortable.

Therefore, in the napkin 1, the minimum value of the length g80 of the dry edge formed at the outer end portion in the horizontal direction of the absorbent body 10 in the stretched state is the distance (L32 ) is adjusted to be smaller than the minimum value of (L32>g80). As a result, compared to the opposite case (L32<g80), the dry edges formed on both sides in the left-right direction of the absorbent body 10 are relatively small, and the dry edges are formed on the wearer's skin (buttocks, It is possible to prevent the wearer from rubbing against the leg loop portion, etc., and to make it difficult for the wearer to feel discomfort. In addition, since the dry edge (L32) formed on the outer sheet 30 is relatively large, large frills are likely to be formed, and the appearance of the napkin 1 can be improved.

Moreover, in the napkin 1 in the natural state, a plurality of wrinkles are formed along the longitudinal direction as shown in FIG. 1 on the non-skin side surface (non-skin side) of the composite sheet 20 . Such wrinkles occur when the composite sheet 20 shrinks in the left-right direction due to the stretching force generated by the waist elastic region GER, and the non-stretchable non-skin side sheet 21 becomes slack and uneven in the thickness direction. Formed by deformation. Then, if the height of the wrinkles in the thickness direction is hwr, in the napkin 1 of the present embodiment, the maximum value of the height hwr is the minimum value of the distance (L32) in the vertical direction of the sheet non-bonded portion 32 (frill) (L32>hwr).

If the height hwr of wrinkles formed on the surface of the composite sheet 20 is longer than the length L32 of the frills, the frills may become inconspicuous. In addition, the formation of high wrinkles on the non-skin side of the composite sheet 20 increases the friction between the composite sheet 20 and the skin side of the wearer's clothing, which may make the napkin 1 less comfortable to wear. On the other hand, in the present embodiment, the height of the wrinkles formed on the non-skin side of the composite sheet 20 is relatively low, making them more conspicuous than the frills and causing friction with the wearer's clothes. are restrained from doing so. In addition, since the dry edge (L32) formed on the outer sheet 30 is relatively large, large frills are likely to be formed, and the appearance of the napkin 1 can be improved.

Next, in the napkin 1, the specific structure of the ruffles formed by the sheet non-bonded portion 32 (dry edge) of the outer sheet 30 will be described. FIG. 10 is a schematic cross-sectional view showing the structure of the underpants-shaped napkin 1 cut near the center in the left-right direction. 10, each member (composite sheet 20, etc.) constituting the napkin 1 is assumed to be in a stretched state.

In the napkin 1, the non-skin side sheet 21 is folded back toward the non-skin side and downward (to form the front folded portion 30) at the upper end 20ef of the front waist portion 20f, thereby forming the outer sheet 30 (sheet non-bonded portion 32). is formed. With such a configuration, in the manufacturing process of the napkin 1, it is possible to reduce the trouble of preparing an additional material (sheet member) for forming the outer sheet 30 and joining it to the front waist portion 20f. . In addition, by sandwiching and joining the waist upper end elastic member 25 between the non-skin side sheet 21 and the front side folded part 30 in the thickness direction, the sheet joining part 31 can be easily formed. can be made more efficient. That is, the manufacturing cost and man-hours of the napkin 1 can be reduced.

Further, in the napkin 1, the outer sheet 30 (sheet non-bonded portion 32) is provided on the front side of the composite sheet 20 in the front-rear direction, that is, the front waist portion 20f. Therefore, when the napkin 1 is worn, frills are formed on the abdomen of the wearer, and the user (wearer) can easily see the frills. In addition, when the napkin 1 is taken out of the package at the stage of using it, the frills are arranged on the front side of the napkin 1, so that the presence of the frills is easy to understand at a glance, and it looks like a well-designed underwear. It can impress users.

On the other hand, in the napkin 1, the non-skin-side sheet 21 (and the skin-side sheet 23) is folded back toward the skin side and downward at the upper end 20eb of the rear waist portion 20b to form the rear folded portion 40. . The lower end portion of the rear folded portion 40 is arranged so as to overlap the rear upper end 10eb of the absorbent main body 10 when viewed in the front-rear direction (thickness direction). Therefore, when the napkin 1 is worn, the rear folded portion 40 exists between the rear upper end 10eb of the absorbent body 10 and the wearer's skin (buttocks). As a result, the edge (upper end 10eb) of the upper end portion of the absorbent main body 10 is suppressed from being directly pressed against the skin of the wearer, and the hardness of the edge portion of the absorbent main body 10 causes the wearer to feel discomfort or discomfort. difficult to let go. In addition, since the upper end 10eb on the rear side of the absorbent main body 10 is covered with the rear folded portion 40, excretory fluid such as menstrual blood moves rearward along the absorbent main body 10, and moves outward from the upper end 10eb. leakage (so-called back leakage) can be suppressed.

10, the length L32 in the vertical direction (longitudinal direction) of the sheet non-bonded portion 32 of the front folded portion 30 (outer sheet 30) is the rear side. It is desirable that it is longer than the length L42 in the vertical direction (vertical direction) of the rear sheet non-bonded portion 42 of the folded portion 40 (L32>L42). As described above, on the front side (abdominal side) of the napkin 1, if the length L32 of the sheet non-bonded portion 32 is short, there is a risk that the frills will be less noticeable. Further, on the rear side (dorsal side) of the napkin 1, if the rear sheet non-joint portion 42 is long, when the napkin 1 is worn, the rear sheet non-joint portion 42 rolls up and the wearer moves the body. In addition, the back sheet non-bonded portion 42 and the wearer's skin (buttocks) rub against each other, which may cause discomfort to the wearer. On the other hand, by setting L32>L42, a relatively large frill is formed by the sheet non-bonded portion 32 on the front side (abdominal side) of the napkin 1, thereby improving the appearance design. In addition, the rear sheet non-bonded portion 42 is relatively small on the rear side (dorsal side) and is less likely to rub against the wearer's skin, thereby suppressing discomfort to the wearer.

In addition, the surface of the non-skin side sheet 21 that constitutes the composite sheet 20 is dotted with a plurality of embossments (pressed portions) that are formed when manufacturing the nonwoven fabric. For example, in the process of manufacturing a spunbond nonwoven fabric, a web formed by depositing long fibers is subjected to embossing such as thermocompression bonding, and pressed in the thickness direction to form a sheet. The embossed portions (pressed portions) formed at this time are generally arranged such that dots (not shown) having a predetermined rectangular or circular shape are arranged side by side at a pitch of about 0.5 to 3 mm. often

In the napkin 1, the length L32 (5 mm or more) in the vertical direction of the sheet non-bonded portion 32 is greater than the pitch (0.5 mm to 3 mm) of the embossed (pressed portion) provided at the manufacturing stage of the nonwoven fabric as described above. is getting longer. With such a configuration, since a plurality of fine embossments are arranged on the surface of the nonwoven fabric forming the outer sheet 30 (sheet non-bonded portion 32), the embossments easily form bending starting points. The sheet non-bonded portion 32 is easily deformable. Therefore, it is possible to easily form more natural and soft frills.

In addition, in the left-right direction of the composite sheet 20, in the region between the pair of side joints 20we, 20we (20fe, 20be) provided at both ends, the sheet non-joint portion of the non-skin side sheet 21 and the outer sheet 30 32 are provided at predetermined intervals W33 in the left-right direction (see FIG. 2). Since the outer sheet 30 is temporarily fixed to the composite sheet 20 by the temporarily fixed joint portion 33 , it is possible to suppress the curling up of the entire sheet non-joined portion 32 . Further, when the sheet non-bonded portion 32 (outer sheet 30) shrinks as the composite sheet 20 shrinks in the left-right direction and fold-like wrinkles (frills) are formed, the sheet non-bonded portion 32 is evenly distributed. Since the sheets are temporarily fixed at such intervals, the contraction width of the sheet non-bonded portion 32 tends to be uniform. That is, by arranging a plurality of equally spaced (W33) regions in the left-right direction, each of the divided regions is divided by the two temporary fixing joints 33, 33 adjacent to each other in the left-right direction in the sheet non-joint portion 32. When shrinking and deforming, the formation of wrinkles with extremely different widths in the left-right direction is suppressed. This makes it easier to form uniform-shaped frills.

On the other hand, in the composite sheet 20, the temporary fixing joint portion 33 may not be provided. That is, in the left-right direction of the composite sheet 20, the sheet non-joint portion 32 may be continuous between the pair of side joint portions 20we, 20we provided at both ends. In this case, since the outer sheet 30 (sheet non-bonded portion 32) can be freely deformed in a wide range from one end side to the other end side in the left-right direction, the sheet non-bonded portion 32 is formed when the sheet non-bonded portion 32 shrinks. The wrinkles tend to have a more natural shape, and a frill with a soft texture can be formed.

Further, in the vertical direction, the sheet non-bonded portion 32 is arranged above the middle position 20cf between the upper end 20ef of the front waistline portion 20f and the front upper end 11ef of the absorbent core 11 (see FIG. 10). Therefore, compared to the case where the sheet non-joint portion 32 is arranged in the lower mold than the intermediate position 20cf, the sheet non-joint portion 32 is less likely to be affected by the highly rigid absorbent core 11, and has a uniform shape. frills are easily formed. In addition, since the frills are formed near the upper end of the front waist portion 20f near the waist opening 1a of the napkin 1, the frills are conspicuous and easily visible to the user. This makes it easier to make the napkin 1 look like underwear.

Further, in the outer sheet 30, the vertical length L32 of the sheet non-bonded portion 32 is preferably equal to or greater than the vertical length L31 of the sheet bonded portion 31 (L32≧L31). In the outer sheet 30, if the length L31 of the sheet joint portion 31 is longer than the length L32 of the sheet non-joint portion 32, when the composite sheet 20 shrinks in the left-right direction, Of the outer sheet 30 that is joined together, the area of the portion that shrinks becomes large, and there is a risk that the frills that are formed are small and likely to shrink. On the other hand, if the length L32 of the sheet non-bonded portion 32 is equal to or greater than the length L31 of the sheet bonded portion 31, the portion of the outer sheet 30 that easily contracts ( The area of the sheet-bonded portion 31) becomes equal to or less than the area of the hard-to-shrink portion (sheet-non-bonded portion 32), and accordingly large frills are likely to be formed. This makes it easier to make the napkin 1 look like underwear.

<Modification>
FIG. 11 is a schematic cross-sectional view showing a first modification of the napkin 1, and corresponds to FIG. In the first modification shown in FIG. 11, the outer sheet 30 provided on the non-skin side of the front waist portion 20f is composed of a sheet member 34 different from the non-skin side sheet 21. As shown in FIG. That is, the outer sheet 30 is not formed by the front side folded portion 30 in which the non-skin side sheet 21 is folded back toward the non-skin side at the upper end 20ef of the front waist portion 20f, but is formed by a separate sheet member 34. is formed.

The sheet member 34 (outer sheet 30) is joined to the non-skin side (non-skin side sheet 21) of the front waist portion 20f via the sheet joining portion 31. As shown in FIG. In Modified Example 1, for example, in the same manner as described with reference to FIG. A sheet non-bonded portion 32 is formed in a region adjacent to the sheet bonded portion 31 in the vertical direction, where the sheet member 34 (outer sheet 30) and the non-skin side sheet 21 are not bonded. When the composite sheet 20 is shrunk when the napkin 1 is worn or the like, the non-bonded portion 32 of the sheet forms fold-like wrinkles, thereby providing a frill-like appearance as in the above-described embodiment. Become.

In FIG. 11, the sheet member 34 (outer sheet 30) has the sheet joint portion 31 formed on the upper end side in the vertical direction, and the sheet non-joined portion 32 is formed on the lower end side. The arrangement of the joints 32 may be different. For example, the sheet non-bonded portion 32 may be formed on the upper end portion side of the sheet member 34 (outer sheet 30), or the sheet non-bonded portion 32 may be formed on both ends in the vertical direction.

FIG. 12 is a schematic cross-sectional view showing a second modification of the napkin 1, and corresponds to FIG. In a second modification shown in FIG. 12, an elastic member 35 such as a rubber thread that expands and contracts in the left-right direction is provided in the non-joint portion 32 of the outer sheet 30 . Specifically, the non-skin side sheet 21 is folded back to the non-skin side at the upper end 20ef of the front waist portion 20f, and then folded back to the skin side again at the lower end 30et of the front side folded portion 30, so that the outer sheet 30 has a two-layer structure, and an elastic member 35 is arranged so as to be sandwiched between the two-layer structure. However, when arranging the elastic member 35 in the sheet non-bonded portion 32, the outer sheet 30 does not necessarily have to have a two-layer structure.

In the second modification of FIG. 12 , the elastic force provided in the sheet non-bonded portion is stronger than the elastic force exerted by the waist upper end elastic member 25 (referred to as “first elastic member”) provided in the sheet bonded portion 31 . The elastic member 35 is arranged so that the elastic force exerted by the member 35 (referred to as “second elastic member”) is lower. That is, the stress when the elastic member 35 (second elastic member) is stretched by a unit length is greater than the stress when the waist upper end elastic member 25 (first elastic member) is stretched by a unit length. An elastic member 35 (second elastic member) is provided so that For example, the thickness of the rubber thread forming the elastic member 35 is about half the thickness of the rubber thread forming the upper waist elastic member 25, and the expansion ratio of the elastic member 35 is set to By setting the magnification to about half, it is possible to adjust the magnitude of the elastic force generated by the elastic member 35 .

By disposing the elastic member 35 (second elastic member) having low stretchability in the sheet non-bonded portion 32 of the outer sheet 30, the fold-like wrinkles (frills) formed in the sheet non-bonded portion 32 are reduced. The shape can be easily controlled. For example, when the composite sheet 20 shrinks in the left-right direction, the sheet non-bonded portion 32 is gently shrunk at the portion where the elastic member 35 (second elastic member) is provided, thereby forcibly forming wrinkles. can be done. At this time, the sheet non-bonded portion 32 provided with the second elastic member is more difficult to contract than the sheet bonded portion 31 provided with the first elastic member. The wrinkles (frills) that are formed can be made larger than the wrinkles that are formed at the sheet joint portion 31 . In this manner, by appropriately adjusting the magnitude of the elastic force of the elastic member 35 (second elastic member) with respect to the upper waist elastic member 25 (first elastic member), the size of wrinkles to be formed can be adjusted. Since it can be changed, it is possible to easily form a frill having a desired shape (size).

<About the package of the napkin 1>
The napkin 1 is folded into a small size and packaged individually with a predetermined packaging material (also referred to as an "individual package"), and one or more individual packages are packaged (non-packaged). shown in the figure). Below, the napkin 1 package (absorbent article package) will be described.

13A and 13B are diagrams illustrating a folding method for packaging the napkin 1. FIG. 14A and 14B are diagrams illustrating a method of packaging the folded napkin 1. FIG.

When folding the napkin 1 for packaging, first, as shown in FIG. Deploy. Then, both side portions in the horizontal direction of the composite sheet 20 are folded from the outside to the inside along a pair of first folding lines F11 and F12 along the vertical direction (longitudinal direction). At this time, as indicated by the arrow in FIG. 13A, the composite sheet 20 is folded such that the rear waist portion 20b is on the inner side in the thickness direction. Note that the first bending lines F11 and F12 do not need to be parallel to the vertical direction, and may be inclined to some extent.

Next, as shown in FIG. 13B, the composite sheet 20 and the absorbent main body 10 are folded in two along the second folding line F2 along the left-right direction. The napkin 1 folded in this manner is in a substantially rectangular compact folded state as shown in FIG. 13C. In the folded napkin 1, the rear waist portion 20b is folded inward, and the front waist portion 20f is exposed to the outside (atmosphere side).

Also, FIG. 13D shows a state in which the folded napkin 1 shown in FIG. 13C is viewed from the opposite side (front side). In FIG. 13D, part of the frill formed by the non-joint portion 32 of the outer sheet 30 is exposed to the outside at the upper end of the napkin 1 in the folded state.

The napkins 1 in the folded state are individually wrapped in a wrapping material 110 made of a predetermined sheet member such as nonwoven fabric or film. When wrapping the napkin 1, the folded napkin 1 is placed near the center of the packaging material 110 as shown in FIG. 14A. At this time, the napkin 1 in the folded state is placed over the packaging material 110 so that the surface where the frills (sheet non-joint portions 32) are exposed shown in FIG. 13D faces the packaging material 110. Then, the left and right sides of the packaging material 110 are folded from the outside to the inside along a pair of packaging material folding lines FS1 and FS2 along the vertical direction (longitudinal direction) to wrap the napkin 1 inside. .

Next, as shown in FIG. 14B, the portions where the left and right sides of the folded packaging material 110 are overlapped in the thickness direction are joined at the first packaging material joints 111 along the vertical direction. Both ends of the packaging material 110 in the vertical direction are joined by a pair of second packaging material joining portions 112, 112 extending in the left-right direction. As a result, the folded napkin 1 is wrapped in the wrapping material 110 to form a package (individual package) of the napkin 1 . The individually packaged napkin 1 is protected from foreign matter by the packaging material 110, so that the napkin 1 is less likely to be damaged during the distribution process, and the absorption performance is less likely to deteriorate. That is, it is possible to prevent the quality and performance of the napkin 1 from deteriorating until the user picks up and opens the individual package.

FIG. 14C is a schematic cross-sectional view showing the DD cross section of FIG. 14B. As shown in FIG. 14C , in the package of the napkin 1 , a portion of the sheet non-joint portion 32 (frill) of the outer sheet 30 is arranged so as to be in contact with the packaging material 110 . In this state, it is desirable that at least a portion of the non-skin side surface of the sheet non-bonded portion 32 is in contact with the packaging material 110 . If the entire skin side surface of the sheet non-joint portion 32 is in contact with the packaging material 110, the napkin 1 is wrapped with the sheet non-joint portion 32 entirely rolled up. In this case, there is a risk that the frills will become curled up during distribution, and it will be difficult to form uniform and beautiful ruffles when the user opens the package of the napkin 1 .

On the other hand, if at least part of the surface of the non-skin side of the sheet non-bonded portion 32 is in contact with the packaging material 110, the entire frill may curl up and become curled. Suppressed. Therefore, when the user unpacks the napkin 1, uniform and beautiful ruffles are easily formed.

However, at this time, the napkin 1 may be wrapped with a part of the skin-side surface of the sheet non-bonded portion 32 in contact with the wrapping material 110 . That is, the frills may be partially rolled up and wrapped. If the entire non-skin side surface of the sheet non-bonded portion 32 is in contact with the wrapping material 110 and wrapped, the frills are not curled up at all and tend to form a peculiarity. In this case, the frills may be crushed and become difficult to open, and it may be difficult to form three-dimensional frills at the time of opening. On the other hand, if a part of the skin-side surface of the sheet non-bonded portion 32 is in contact with the packaging material 110 when wrapped, the entire frill is suppressed from being crushed in the thickness direction. , uniform and beautiful frills are easily formed.

=== Second Embodiment ===
FIG. 15 is a plan view of the napkin 2 in the unfolded and extended state according to the second embodiment, and corresponds to FIG. 2 of the first embodiment. FIG. 16 is a schematic cross-sectional view of the napkin 2 in an unfolded and stretched state, corresponding to FIG. 3 of the first embodiment. The napkin 2 of the second embodiment differs from the napkin 1 of the first embodiment in a part of the structure of the composite sheet 20, and the structure other than the composite sheet 20 is substantially the same as that of the napkin 1. Below, a part different from the napkin 1 is demonstrated.

The composite sheet 20 of the napkin 2 is provided with skin-side sheets 27 and 28 on the skin side in the thickness direction of the non-skin-side sheet 21, and between the non-skin-side sheet 21 and the skin-side sheets 27 and 28 in the thickness direction. is provided with a plurality of waist elastic members 26, 26 . . . such as thread rubber.

The waist elastic members 26 are joined between the non-skin-side sheet 21 and the skin-side sheets 27 and 28 in a state of being stretched in the left-right direction, and are provided in plurality at predetermined intervals in the vertical direction. Due to the stretchability exhibited by the waist elastic member 26, the composite sheet 20 is imparted with stretchability along the left-right direction. That is, in the composite sheet 20 of the napkin 2, the waist elastic member 26 forms a "girth elastic region GER". In addition, in the napkin 2, the extension ratio when attaching the waist elastic member 26 to the composite sheet 20 is that the stretching force per unit area of the waist elastic region GER in the napkin 2 is the unit area of the waist elastic region GER in the napkin 1. It is better to adjust it so that it is equal to the stretching force.

The skin-side sheet 27 is a member corresponding to the skin-side sheet 22 of the napkin 1, but unlike the skin-side sheet 22, it is formed of a non-woven fabric having no elasticity (or very little elasticity). Similarly, the skin-side sheet 28 is a member corresponding to the skin-side sheet 23 of the napkin 1, and is formed of a non-stretchable (or extremely low-stretchable) non-woven fabric. Specifically, it is a non-woven fabric composed of components such as PP (polypropylene), PE (polyethylene), and PET (polyethylene terephthalate), and does not have elastic components such as urethane.

In the composite sheet 20 of the napkin 2 , the non-skin-side sheet 21 and the skin-side sheets 27 and 28 are joined together by an adhesive applied to the surface of the waist elastic member 26 . That is, in the napkin 2, a composite sheet joint is formed at the position where the waist elastic member 26 is arranged. Then, as in the first embodiment, in the composite sheet 20 in the stretched state, the sheet non-joint portion The minimum value of the distance (L32) in the vertical direction of 32 (frill) is adjusted to be larger (L32>g60). Therefore, compared to the opposite case (L32<g60), in the composite sheet 20, the dry edge (g60) formed on the opening edge 1be of the leg opening 1b is relatively small, and the dry edge (g60) is relatively small. It is possible to prevent the edge from rubbing against the wearer's skin (legs), thereby making it difficult for the wearer to feel discomfort. In addition, since the dry edge (L32) formed on the outer sheet 30 is relatively large, large frills are likely to be formed, and the napkin 2 having a good appearance can be realized.

In addition, in the napkin 2 of the second embodiment, the dry edge formed in the portion other than the opening edge 1be of the leg opening 1b is the same as that of the napkin 1 of the first embodiment.

===Others===
The above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to limit and interpret the present invention. It goes without saying that the present invention can be modified and improved without departing from its spirit, and that equivalents thereof are included in the present invention.

In the above-described embodiment, the pants-type napkin 1 was described as an example of the pants-type (shorts) absorbent article, but the present invention is also applicable to pants-type absorbent articles other than napkins. For example, a pants-type (shorts-type) diaper, a pants-type (shorts-type) absorbent pad, or the like may be used.

In the above-described embodiment, the front side folded portion 30 in which the non-skin side sheet 21 is folded back to the non-skin side at the upper end of the front waist portion 20f, and the separate sheet member 34 are provided on the non-skin side of the front waist portion 20f. Examples have been described in which an outer sheet 30 is provided. A frill is formed in the front waist portion 20 f by the sheet non-bonded portion 32 of the outer sheet 30 . On the other hand, in the rear waist portion 20b, by laminating a separate sheet member (such as non-woven fabric) on the non-skin side of the non-skin side sheet 21 and joining a part thereof, the outer side similar to the front waist portion 20f is formed. A sheet 30 (not shown) may be formed. The outer sheet 30 of the rear waist portion 20b also has the same configuration as the outer sheet 30 of the front waist portion 20f, so that the rear side (dorsal side) of the napkin 1 has a uniform and beautiful ruffle shape. can be formed.

In the above-described embodiment, the upper waist elastic member 25 is provided between the non-skin side sheet 21 and the outer sheet 30 (front folded portion 30) in the front waist portion 20f (abdominal side) (Fig. 10, etc.), and may be provided between the non-skin-side sheet 21 and the skin-side sheet 22 . In addition, the waist upper end elastic member 25 is provided between the skin side sheets 23, 23 folded back at the upper end portion 20eb in the rear waist portion 20b (dorsal side) (see FIG. 10, etc.). It may be provided between the non-skin-side sheet 21 and the skin-side sheet 23 .

1 napkin (first embodiment: pants-type napkin, pants-type absorbent article),
2 napkin (second embodiment: pants-type napkin, pants-type absorbent article),
1a waist opening, 1b leg opening, 1be opening edge (leg opening edge),
10 absorbent body,
11 absorbent core, 11ef upper end (front side),
12 top seat, 13 second seat, 14 back seat,
15 side sheet, 15t end portion, 17 high density portion,
20 Composite sheet (trunk member),
20f front side waist part, 20ef upper end (front side),
20b rear waist part, 20eb upper end (rear side),
20cf middle position,
20we side joint,
21 non-skin side sheet,
22 skin side sheet (elastic sheet),
23 skin side sheet (elastic sheet),
25 waist upper end elastic member (first elastic member),
26 waist elastic member (composite sheet joint),
27 skin side sheet,
28 skin side sheet,
30 outer sheet (front folded portion),
31 sheet joining portion, 32 sheet non-joining portion,
33 temporary fixing joint portion, 34 sheet member, 35 elastic member (second elastic member),
40 rear folded part,
41 rear sheet joint portion, 42 rear sheet non-joint portion,
50 absorber elastic member,
51 central absorbent body elastic member, 52 both side absorbent body elastic members,
60 welded portion (composite sheet joint),
71 end joints,
80 body joint,
110 packaging material,
111 first packaging material joint, 112 second packaging material joint,
g60 dry edge length (leg opening edge, boundary between laminated part and non-laminated part),
g20we dry edge length (both sides of side joint),
g15t dry edge length (end of side sheet),
g80 dry edge length (both sides of body joint),
GER girth elastic region;
CL center position

Claims (17)

having a vertical direction, a horizontal direction, and a front-back direction that intersect each other;
an absorbent body having a liquid-absorbing absorbent core;
a composite sheet having a skin-side sheet and a non-skin-side sheet, and forming at least a portion of a waist opening edge and at least a portion of a pair of leg opening edges;
A pants-type absorbent article having
Having a composite sheet joint that joins the skin-side sheet and the non-skin-side sheet,
The composite sheet has an outer sheet laminated on the non-skin side of the non-skin side sheet,
The outer sheet is
a sheet joint portion joined to the non-skin side sheet;
a sheet non-bonded portion that is adjacent to the sheet bonded portion in the vertical direction, has a predetermined width in the lateral direction, and is not bonded to the non-skin side sheet;
has
in the stretched state,
In the composite seat, the minimum value of the distance in the vertical direction of the non-joint portion of the sheet is larger than the minimum value of the distance between the leg opening edge and the joint portion of the composite sheet. pants-type absorbent article. The pants-type absorbent article according to claim 1,
In the composite sheet in the stretched state, the minimum distance between the non-bonded portion of the sheet in the vertical direction is larger than the maximum distance between the leg opening edge and the bonded portion of the composite sheet. A pants-type absorbent article characterized by: The pants-type absorbent article according to claim 1 or 2,
The composite sheet has a laminated portion in which the skin-side sheet and the non-skin-side sheet are laminated, and a non-laminated portion in which the skin-side sheet and the non-skin-side sheet are not laminated,
In the composite sheet in a stretched state, the minimum distance in the vertical direction between the non-bonded portion of the sheet is greater than the minimum distance between the boundary between the laminated portion and the non-laminated portion and the bonded portion of the composite sheet. A pants-type absorbent article characterized in that the value is larger. The pants-type absorbent article according to any one of claims 1 to 3,
The absorbent main body has side sheets that are folded inward from the outside on both sides in the left-right direction,
an end joining portion joining the inner end portion in the left-right direction of the folded side sheet to a sheet member facing the non-skin side in the thickness direction;
In the absorptive main body in a stretched state, the sheet non-joint portion is larger than the minimum distance between the left-right direction inner end of the end joined portion and the left-right direction inner end of the inner end portion. A pants-type absorbent article, wherein the minimum value of the distance in the vertical direction is greater. The pants-type absorbent article according to any one of claims 1 to 4,
having a body joint portion that joins the absorbent body and the composite sheet,
In the stretched state, the distance in the vertical direction of the non-bonded portion of the sheet is greater than the minimum distance between the outer edge of the body bonded portion in the horizontal direction and the outer edge of the absorbent body in the horizontal direction. A pants-type absorbent article characterized in that the minimum value of is greater. The pants-type absorbent article according to any one of claims 1 to 5,
The minimum value of the distance in the vertical direction of the non-bonded portion of the sheet is larger than the maximum value of the height in the thickness direction of wrinkles formed on the non-skin side surface of the composite sheet in a natural state. Pants-type absorbent article. The pants-type absorbent article according to any one of claims 1 to 6,
The composite sheet has a front waistline portion and a rear waistline portion,
a pair of side joints for jointing the front waistline and the rear waistline at both ends in the left-right direction;
In the composite sheet in the stretched state, the distance in the vertical direction of the sheet unjoined portion is larger than the minimum value of the distance between the lateral outer end of the composite sheet and the outer end of the side joint portion. A pants-type absorbent article characterized in that the minimum value is larger. The pants-type absorbent article according to any one of claims 1 to 7,
A pants-type absorbent article, wherein the distance in the vertical direction of the non-bonded portion of the sheet in the stretched state is 5 mm or more and 25 mm or less. The pants-type absorbent article according to any one of claims 1 to 8,
The outer sheet is formed by folding at least one of the skin-side sheet and the non-skin-side sheet from the skin side to the non-skin side at an upper end of one side of the composite sheet. pants-type absorbent article. The pants-type absorbent article according to claim 9,
A pants-type absorbent article, wherein the one side is a front side in the front-rear direction. The pants-type absorbent article according to claim 10,
At least one of the skin-side sheet and the non-skin-side sheet has a rear-side folded portion folded back from the non-skin side to the skin side at the upper end of the composite sheet on the rear side in the front-rear direction,
A pants-type absorbent article, wherein at least a portion of the rear folded portion overlaps with the absorbent main body in the vertical direction. The pants-type absorbent article according to claim 11,
the rear folded portion has a rear sheet unjoined portion that is not joined to at least one of the composite sheet and the absorbent main body on the rear side in the front-rear direction;
A pants-type absorbent article, wherein, in a stretched state, the length in the vertical direction of the non-bonded portion of the sheet is longer than the length of the non-bonded portion of the back sheet in the vertical direction. The pants-type absorbent article according to any one of claims 1 to 12,
The outer sheet is provided with a plurality of pressing portions that compress the outer sheet in the thickness direction at a predetermined pitch,
The underpants-type absorbent article, wherein the length in the vertical direction of the sheet non-bonded portion is longer than the pitch of the compressed portion in a stretched state. The pants-type absorbent article according to any one of claims 1 to 13,
The composite sheet has a front waistline portion and a rear waistline portion,
a pair of side joints for joining the front waistline and the rear waistline at both ends in the left-right direction;
The underpants-type absorbent article, wherein the non-sheet-bonded portion is continuous between the pair of side-bonded portions in the left-right direction. The pants-type absorbent article according to any one of claims 1 to 13,
The composite sheet has a front waistline portion and a rear waistline portion,
a pair of side joints for joining the front waistline and the rear waistline at both ends in the left-right direction;
A plurality of temporary fixing joints for joining the composite sheet and the sheet non-joint portion between the pair of side joints are provided at predetermined intervals in the left-right direction. A pants-type absorbent article. An absorbent article package in which the pants-type absorbent article according to any one of claims 1 to 15 is folded and wrapped in a wrapping material,
An absorbent article package, wherein at least a part of the non-skin side surface of the sheet non-joint portion is packaged in contact with the packaging material. The absorbent article package according to claim 16,
An absorbent article package, wherein at least a part of the skin-side surface of the sheet non-bonded portion is packaged in contact with the packaging material.

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