JP2023171083A - Absorbent pad for disposable diaper or disposable diaper - Google Patents

Abstract

To provide an absorbent diaper for disposable diapers or disposable diaper capable of improving skin contact feel when being worn, while reducing deformation of an absorber.SOLUTION: An absorbent pad for disposable diapers or disposable diaper has longitudinal, lateral and thickness directions intersecting with each other and comprises a liquid absorbent core (11a). The absorbent pad for disposable diapers or disposable diaper is characterized in that in an unfolded and stretched state, the absorbent pad (11a) includes a pair of compressed parts (E) along the longitudinal direction at a crotch part when being worn, and the pair of compressed parts (E) respectively include curved parts (F) curved outward in the lateral direction.SELECTED DRAWING: Figure 6

Description

The present invention relates to an absorbent pad for a disposable diaper or a disposable diaper.

Conventionally, it has been known to form linear embossments on an absorbent body to suppress side leakage of excrement, as in the paper diaper described in Patent Document 1.

JP 2018-140068 Publication

In an absorbent body with linear compressed grooves, such as the embossed paper diaper of Patent Document 1, corners (sharp portions) are likely to occur due to deformation of the absorbent body when worn, and these corners may touch the wearer's skin. There is a risk that the wearer may feel uncomfortable due to contact with the wearer. Emboss is also formed to prevent the absorbent body from losing its shape, but linear embossing has little effect, and increasing the area where the linear emboss is formed prevents the absorbent body from losing its shape. If you try to do so, the absorbent material becomes hard and there is a risk that it will not feel good against the wearer's skin.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide an absorbent pad or pad for disposable diapers that reduces the deformation of the absorbent body and improves the feel against the skin when worn. Our goal is to provide disposable diapers.

The main invention for achieving the above object is an absorbent pad for a disposable diaper or a disposable diaper, which has a vertical direction, a horizontal direction, and a thickness direction that intersect with each other, and includes an absorbent core capable of absorbing liquid. In the unfolded state and the stretched state, the absorbent core includes a pair of compressed parts along the longitudinal direction in the crotch region when worn, and each of the pair of compressed parts extends outward in the horizontal direction. This is an absorbent pad for disposable diapers or a disposable diaper characterized by having a curved portion.
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

According to the present invention, it is possible to reduce the deformation of an absorbent pad for a disposable diaper or an absorbent body of a disposable diaper, and to improve the feel against the skin when worn.

1 is a schematic perspective view of a diaper 1. FIG. FIG. 2 is a plan view of the diaper 1 in an expanded and stretched state, viewed from the skin side. 3 is a schematic cross-sectional view taken along line AA in FIG. 2. FIG. FIG. 2 is a plan view of the absorbent main body 10. FIG. 5A is a schematic cross-sectional view taken along the line XX in FIG. 4. FIG. FIG. 5B is a schematic cross-sectional view taken along the YY arrow in FIG. 4. FIG. 5C is a schematic cross-sectional view taken along the Z-Z arrow in FIG. 4. FIG. 3 is a plan view of the absorbent body 11. FIG. It is a figure which shows the absorber 11 of a comparative example.

From the description of this specification and the attached drawings, at least the following matters will become clear.
Aspect 1 has a longitudinal direction, a transverse direction, and a thickness direction that intersect with each other,
An absorbent pad for a disposable diaper or a disposable diaper comprising an absorbent core capable of absorbing liquid, wherein in the unfolded state and the stretched state, the absorbent core has a pair along the longitudinal direction in the crotch region when worn. An absorbent pad for a disposable diaper or a disposable diaper is provided with a pressing section, and each of the pair of pressing sections has a curved section that curves outward in the lateral direction.

According to aspect 1, the rigidity of the absorbent core is increased by the pair of compressed parts while maintaining the softness of the absorbent core in the area surrounded by the curved part of the pair of compressed parts, thereby reducing the amount of excrement when worn. By making it easier to maintain the shape of the absorbent core in the part where it is first absorbed, and by providing a curved part in the compressed part, it reduces the possibility that the outer rigidity of the absorbent core in the lateral direction becomes excessively high, making it easier to wear. It is possible to improve the feel on the wearer's skin at times.

Aspect 2 is the absorbent pad for a disposable diaper or disposable diaper according to Aspect 1, wherein the pair of compressing portions are provided on the ventral side of the longitudinal center of the disposable diaper or the absorbent pad for a disposable diaper. It is.

According to aspect 2, since the compression part is a highly rigid part, when the wearer is in a sitting or lying position, the possibility that the compression part comes into contact with the buttocks and causes discomfort to the wearer is reduced. Can be done.

Aspect 3 is the absorbent pad for a disposable diaper or disposable diaper according to Aspect 2, wherein in the longitudinal direction, the pair of compressed parts are provided in at least a part of a region corresponding to a urinary opening when the absorbent core is worn. It's a diaper.

According to aspect 3, the shape of the absorbent core is easily maintained by absorbing urine because the absorbent core is provided in the region corresponding to the urine opening that absorbs urine in the longitudinal direction.

Aspect 4 is characterized in that the pair of compressed parts include a one-sided compressed part provided on one side of the horizontal center of the absorbent core, and a compressed part provided on the other side of the absorbent core with respect to the horizontal center of the absorbent core. the other side compressing part includes a first curved part and a second curved part, and the outermost end of the first curved part in the lateral direction is connected to the second curved part. The absorbent pad for a disposable diaper or the disposable diaper according to any one of aspects 1 to 3, wherein the absorbent pad is provided on the ventral side from the outermost end in the lateral direction.

According to aspect 4, the curved portion of the compressed portion improves skin contact with the wearer when worn, and the first curved portion and the second curved portion are provided at different positions in the vertical direction of the compressed portion in the lateral direction. Since the rigidity of the portion between the outermost ends of the absorbent core in the longitudinal direction can be increased, the rigidity of the absorbent core can be increased, and the shape of the absorbent core can be easily maintained.

Aspect 5 is the disposable diaper according to aspect 4, wherein the first curved part and the second curved part constitute at least a part of the one side compressed part, and the one side compressed part is continuous in the longitudinal direction. absorbent pads or disposable diapers.

According to aspect 5, the one side compressed portion including the first curved portion and the second curved portion as a part thereof is continuous in the longitudinal direction, so that the one side compressed portion and the one side compressed portion include the first curved portion and the second curved portion as parts thereof are continuous in the longitudinal direction. The overlapping region can reduce the risk of bending in the lateral direction and the risk of tearing the absorbent core.

Aspect 6 is characterized in that the pair of compressed portions include a compressed portion on one side provided on one side of the center of the absorbent core in the lateral direction, and a compressed portion provided on the other side of the center of the absorbent core in the lateral direction. from the other end of the one side pressing section to the other side, from the other side end of the one side pressing section to the other side end of the one side pressing section. The absorbent pad for a disposable diaper or the disposable diaper according to any one of aspects 1 to 5, wherein the length in the lateral direction to the one end of the pressing part is longer.

According to aspect 6, the length in the lateral direction from the other side end of the one side compressed part to the one side end of the other side compressed part is shorter than the lateral length of the one side compressed part. Since the area between the side compressed part and the other side compressed part can be used as a buffer area for the force applied to the absorbent core, the absorbent core can be easily deformed flexibly and the feel when worn can be improved. Can be done.

In aspect 7, the pair of compressed portions include a one-sided compressed portion provided on one side of the horizontal center of the absorbent core, and a compressed portion provided on the other side of the absorbent core from the horizontal center of the absorbent core. and the lateral direction from the one side end at the narrowest part of the absorbent core where the lateral length is the shortest to the one end of the one side compressed part. The disposable according to any one of aspects 1 to 6, wherein the lateral length from the other end of the one side compressed part to the one end of the other side compressed part is longer than the length of the disposable part according to any one of aspects 1 to 6. Absorbent pads for diapers or disposable diapers.

According to aspect 7, the lateral length between the other end of the one side compressed part and the one side end of the other side compressed part is set from the one side end at the narrowest part to one side of the one side compressed part. Since the one side compressed part can be provided on the outside (one side) in the lateral direction of the absorbent core, the shape of the absorbent core is shorter than the length in the lateral direction to the side edge. This can reduce the risk of collapse.

In aspect 8, the pair of compressed portions include a one-sided compressed portion provided on one side of the horizontal center of the absorbent core, and a compressed portion provided on the other side of the absorbent core with respect to the horizontal center of the absorbent core. The length in the longitudinal direction from the ventral side end to the dorsal side end of the one side compressed part is equal to the length from the one side end of the one side compressed part to the other side 8. The absorbent pad for a disposable diaper or disposable diaper according to any one of aspects 1 to 7, which is longer than the length in the lateral direction to the end.

According to aspect 8, the length in the vertical direction from the ventral end to the dorsal end of the one side compressed part is shorter than the horizontal length from one end to the other end of the one side compressed part. Since the one-side compressed portion can be configured to be longer in the longitudinal direction than in the case where the absorbent core is made longer in the longitudinal direction, it becomes easier to maintain the shape of the absorbent core over a wide range in the longitudinal direction.

Aspect 9 is a disposable diaper having a pair of waist portions, and in a region where the waist portion and the absorbent core overlap when viewed in the thickness direction, the waist portion and the pair of compressed portions overlap. 9. The absorbent pad for a disposable diaper or the disposable diaper according to any one of aspects 1 to 8, wherein the area of the portion where the waist portion overlaps with the pressing portion is larger than the area of the portion where the waist portion and the pair of compressed portions overlap.

According to aspect 9, the pair of compression parts can reduce the possibility that the waist part will cause discomfort to the wearer's skin.

Aspect 10 is a disposable diaper having a pair of waist portions, wherein the waist portion includes the waist elastic member that is expandable and contractible in the lateral direction, and when viewed in the thickness direction, the pair of compressed portions have 10. The absorbent pad for a disposable diaper or disposable diaper according to any one of aspects 1 to 9, which has a portion that does not overlap with the elastic member.

According to the aspect 10, it is possible to reduce the possibility that the compressed portion having high rigidity is pressed against the wearer's skin by the contractile force of the waist elastic member and the texture is deteriorated.

In aspect 11, the pair of compressed portions include a one-sided compressed portion provided on one side of the horizontal center of the absorbent core, and a compressed portion provided on the other side of the absorbent core with respect to the horizontal center of the absorbent core. 10. The compressor according to any one of aspects 1 to 10, wherein the one-side compressor includes an inner compressor and an outer compressor located outside the inner compressor in the lateral direction. Absorbent pad for disposable diapers or disposable diapers.

According to aspect 11, since the rigidity of the absorbent core in the lateral direction can be increased, the shape of the absorbent core can be easily maintained.

Aspect 12 is characterized in that the maximum value of the lateral distance between the inner compressed part and the outer compressed part is the lateral length from the one end to the other end of the inner compressed part. This is an absorbent pad for a disposable diaper or a disposable diaper according to aspect 11, which is shorter than the width.

According to aspect 12, the maximum value of the lateral distance between the inner compressed part and the outer compressed part is longer than the lateral length from the other end to the one end of the inner compressed part. Also, since the rigidity of the region between the inner compressed part and the outer compressed part in the lateral direction can be increased, the rigidity of one side of the absorbent core can be increased, and the shape of one side of the absorbent core can be increased. becomes easier to maintain.

Aspect 13 is characterized in that the length in the thickness direction of the absorbent core in the compressed portion is 15% or more of the length in the thickness direction of the central portion of the absorbent core in the lateral direction, and 13. The absorbent pad for disposable diapers or the disposable diaper according to any one of aspects 1 to 12, wherein the absorption pad is 40% or less.

According to aspect 13, the length in the thickness direction of the absorbent core in the pair of compression parts is shorter than 15% of the length in the thickness direction of the central part in the lateral direction of the absorbent core. While reducing the risk of the absorbent core becoming excessively hard and causing discomfort to the wearer's skin, the length in the thickness direction of the absorbent core at the pair of compressed parts is equal to the thickness direction of the central part in the lateral direction of the absorbent core. Compared to a case where the length is longer than 40%, the rigidity of the absorbent core can be improved and the deformation of the absorbent core can be reduced.

Aspect 14 has an absorbent main body including the absorbent core, and the absorbent main body has a pair of leak-proof walls provided with leak-proof wall elastic members along the vertical direction at both ends in the horizontal direction. The leak-proof wall part has a skin-side leak-proof wall part provided closest to the skin side, and a non-skin-side leak-proof wall part provided on the non-skin side from the skin-side leak preventive wall part. , and the inner end portion of the leakage prevention wall portion in the lateral direction is a first portion to which at least a portion of the skin side leakage prevention wall portion and the non-skin side leakage prevention wall portion that are opposed to each other are joined and fixed. 14. The absorbent pad or disposable diaper for a disposable diaper according to any one of aspects 1 to 13, wherein the absorbent pad has one fixing part, and the pair of compressed parts has a part overlapping with the first fixing part in the longitudinal direction. .

According to aspect 14, the part where the first fixing part is provided is a part where the leak-proof wall part is likely to come into contact with the wearer's skin; Even when force is applied to the absorbent core, the shape of the absorbent core can be easily maintained due to the rigidity of the compressed portion.

Aspect 15 has an absorbent main body including the absorbent core and the skin-side sheet, and the absorbent main body is provided with a pair of leak-proof wall elastic members along the vertical direction at both ends in the horizontal direction. a second fixing part to which at least a part of the non-skin side surface of the leak-proof wall part and the skin side surface of the skin-side sheet facing each other are joined and fixed; 15. The absorbent pad for a disposable diaper or disposable diaper according to any one of aspects 1 to 14, wherein the pair of compressed parts has a portion that overlaps with the second fixing part.

According to aspect 15, the part where the second fixing part is provided is a part where the leak-proof wall part is likely to come into contact with the wearer's skin; Even when a force is applied to the absorbent core in contact with the compressed portion, the shape of the absorbent core can be easily maintained due to the rigidity of the compressed portion.

Aspect 16 has an absorbent main body including the absorbent core, and the absorbent main body has a leak-proof wall portion provided with a leak-proof wall elastic member along the vertical direction at both ends in the horizontal direction. 15. The absorbent pad for a disposable diaper or the disposable diaper according to any one of aspects 1 to 14, wherein the pair of compressed portions are provided inside the leakage prevention wall portion in the lateral direction.

According to aspect 16, the compressed portion provided in the absorbent core reduces deformation of the absorbent core and makes it easier to absorb excrement, and the compressed portion is provided in the portion protruding toward the skin as a leak-proof wall portion. By not providing this, it is possible to prevent the wearer's skin from feeling uncomfortable due to the rigidity of the compressed portion when worn.

===This embodiment===
As an absorbent pad for a disposable diaper or a disposable diaper according to the present invention, a pants-type disposable diaper 1 for adults (hereinafter also referred to as "diaper 1") will be described as an example. However, the absorbent pad for disposable diapers or disposable diapers according to the present invention also includes absorbent pads and shorts-type napkins used together with disposable diapers. Moreover, the wearer of the absorbent pad for a disposable diaper or the disposable diaper is not limited to an adult, and may be a living creature such as an infant or an animal. Note that the absorbent pad for disposable diapers or disposable diapers of the present invention do not include sanitary napkins.

<Configuration of diaper 1>
FIG. 1 is a schematic perspective view of a diaper 1. FIG. 2 is a plan view of the diaper 1 in the unfolded and stretched state, viewed from the skin side. FIG. 3 is a schematic cross-sectional view taken along line AA in FIG. Note that the "deployed state" refers to the relationship between the side parts (side ends) 30sw of the ventral waist part 30 and the sides (side ends) 40sw of the back waist part 40 on both sides of the pants-type diaper 1. This is a state in which the side joints 20, which are joints, are separated and opened, so that the entire diaper 1 is laid out flat. The "stretched state" refers to a state in which the elastic member of the diaper 1 is stretched to such an extent that the wrinkles of the diaper 1 are no longer visible. Specifically, the diaper 1 is stretched until the dimensions of each member constituting the diaper 1 (for example, the ventral waist portion 30 described below) match or are close to the dimensions of the individual member. The line CC in FIG. 2 is the center line in the horizontal direction (also referred to as the "horizontal center CC"), and the CL line is the center line in the vertical direction (also referred to as the "vertical center CL"). ).

The pants-shaped diaper 1 has vertical, horizontal, and longitudinal directions that intersect with each other, and has a waist opening BH and a pair of leg openings LH, LH. The upper side in the vertical direction corresponds to the waist opening BH side, and the lower side corresponds to the crotch side. The front side in the front-back direction corresponds to the wearer's ventral side, and the rear side corresponds to the wearer's dorsal side. The lateral direction is a direction along the stretching direction of the ventral waist elastic members 35 and 45 of the ventral waist portion 30 and the dorsal waist portion 40. The longitudinal direction of the diaper 1 in the unfolded and stretched state corresponds to the longitudinal direction of the absorbent main body 10, and is a direction along the up-down direction of the diaper 1 in the pants-like state. Moreover, as shown in FIG. 3 etc., the direction in which the materials constituting the diaper 1 are laminated is defined as the thickness direction. The side in contact with the wearer's skin in the thickness direction is defined as the skin side, and the opposite side is defined as the non-skin side.

The diaper 1 is a so-called three-piece type diaper having a liquid-absorbing absorbent main body 10, a ventral waist section 30 that covers the wearer's abdominal region, and a dorsal waist region 40 that covers the wearer's back region. It is a pants-type diaper.

As shown in FIG. 2, in the unfolded and stretched state, the ventral waist portion 30 and the dorsal waist portion 40 are vertically spaced apart and lined up parallel to each other, with the absorbent main body 10 being placed between them. The longitudinal ends 10ea and 10eb of the absorbent main body 10 are bonded and fixed to the skin side of the nearest waist portions 30 and 40, respectively, and the external shape is approximately H-shaped in plan view. From this state, the absorbent main body 10 is folded in half with the longitudinal center position (center line) CL as the folding position. That is, the lower end of the diaper 1 in the pants-type state in the vertical direction corresponds to the center CL of the diaper 1 in the unfolded and stretched state. In this bi-folded state, the ventral waist portion 30 and the dorsal waist portion 40 that face each other are joined and connected to each other at the side portions 30sw and 40sw on both sides in the lateral direction, and the pair of side joint portions 20, 20 is formed. That is, the pair of side joints 20, 20 form the ventral waist portion 30 and the dorsal waist portion 40 into an annular shape. As a result, the diaper 1 becomes a pants-shaped diaper 1 in which a waist opening BH and a pair of leg openings LH and LH are formed as shown in FIG. Note that the side joint portions 20 are formed by known joining means such as welding or adhesion.

(ventral girth part 30)
The ventral waist portion 30 is arranged on the non-skin side of the absorbent main body 10. As shown in FIG. 3, the ventral waist portion 30 includes a skin-side sheet 31 disposed closest to the skin in the thickness direction, and a non-skin side laminated adjacent to the non-skin side of the skin-side sheet 31. It has a sheet 32 and an abdominal waist elastic member 35 provided between the skin side sheet 31 and the non-skin side sheet 32. The ventral waist portion 30 basically has a two-layer structure of a skin-side sheet 31 and a non-skin-side sheet 32, but it may partially have a structure of three or more layers, such as a skin-side sheet 36 (described later). It's okay to do so.

The skin-side sheet 31 is a sheet member having a rectangular shape in plan view, and is made of, for example, SMS nonwoven fabric. The non-skin side sheet 32 is a sheet member made of a nonwoven fabric that is rectangular in plan view, and is made of, for example, SMS nonwoven fabric. The skin side sheet 31 and the non-skin side sheet 32 can each have an arbitrary size and shape. Further, the upper end or the lower end of the non-skin side sheet 32 may have a folded part that is folded back from the non-skin side to the skin side and from the front side to the rear side in the longitudinal direction.

The ventral waist elastic member 35 is an elastic member that is provided along the lateral direction and can be expanded and contracted in the lateral direction, and in this embodiment, a plurality of rubber threads are used. A plurality of ventral waist elastic members 35 are disposed in parallel in the vertical direction (vertical direction) between the skin side sheet 31 and the non-skin side sheet 32, and are stretched in the horizontal direction. It is attached using adhesive such as The stretchability exhibited by the ventral waist elastic member 35 allows the ventral waist portion 30 to fit around the wearer's ventral waist. In addition, although the diaper 1 of this embodiment uses thread rubber as the ventral waist elastic member 35 in the ventral waist portion 30, an elastic member such as a stretchable sheet is arranged to make the ventral waist portion 30 stretchable in the lateral direction. You may let them.

Further, the ventral waist portion 30 has a skin sheet 36. As shown in FIG. 3, the skin sheet 36 is a sheet member disposed to cover the upper end of the absorbent main body 10 from the skin side, and has a function as a cover sheet. This prevents the upper end of the absorbent body 10 from digging into the wearer's skin when the diaper 1 is worn. The skin sheet 36 is made of, for example, SMS nonwoven fabric. Note that the skin sheet 36 does not necessarily have to be provided.

(Dorsal girth part 40)
The dorsal waist portion 40 has substantially the same configuration as the ventral waist portion 30. That is, the dorsal girth section 40 is arranged on the non-skin side of the absorbent main body 10, and is adjacent to the skin-side sheet 41 disposed closest to the skin in the thickness direction and on the non-skin side of the skin-side sheet 41. It has a non-skin side sheet 42 which is laminated so as to be layered, and a dorsal waist elastic member 45 which is provided between the skin side sheet 41 and the non-skin side sheet 42 and extends in the lateral direction. Further, like the ventral waist portion 30, it may have a skin sheet 46 or the like (see FIGS. 2 and 3), and may have a folded portion (not shown).

Similar to the ventral waist portion 30, the skin side sheet 41 is a sheet member, and is formed of, for example, SMS nonwoven fabric. The non-skin side sheet 42 is a sheet member, and is formed of, for example, SMS nonwoven fabric.

The back waist elastic member 45 is an elastic member that is provided along the lateral direction and can be expanded and contracted in the lateral direction, and in this embodiment, a rubber thread is used. A plurality of dorsal girth elastic members 45 are disposed in the vertical direction (vertical direction) between the skin-side sheet 41 and the non-skin-side sheet 42, and are stretched in the horizontal direction by hot-melt bonding. It is attached using adhesive such as adhesive. Due to the elasticity exhibited by the back waist elastic member 45, the back waist portion 40 fits the wearer's back waist. In the diaper 1 of this embodiment, thread rubber is used as the back waist elastic member 45 in the back waist portion 40, but an elastic member such as an elastic sheet is arranged to make the back waist portion 40 stretchable in the lateral direction. You may let them.

The external shape of the dorsal waist part 40 is different from that of the ventral waist part 30, as shown in FIG. It has a buttock region 40b. In the buttocks region 40b, the width increases from the lower side to the upper side in the vertical direction, and by providing the buttock region 40b, the back waist portion 40 does not touch the wearer's buttocks when the diaper 1 is worn. Can be coated. That is, the buttock area 40b has a function as a buttock cover.

A curved elastic member 47 such as a rubber thread as shown in FIG. 2 is provided in the buttock region 40b. The curved elastic member 47 is attached between the skin-side sheet 41 and the non-skin-side sheet 42 while extending along the outer edge of the buttock region 40b, and includes an end elastic portion 47a and an inclined elastic portion 47b. Due to the elasticity exhibited by the curved elastic member 47, when the diaper 1 is worn, the buttock region 40b of the back waist portion 40 easily fits the wearer's buttock, and is less likely to roll up from the buttock. The diaper 1 has three curved elastic members 47, each of which has a continuous end elastic portion 47a and an inclined elastic portion 47b. Specifically, three curved elastic members 47 are provided that are continuous in this order from one side in the lateral direction: an inclined elastic section 47b, an end elastic section 47a, and an inclined elastic section 47b.

The end elastic portion 47a is the ventral end in the longitudinal direction (lower end in the vertical direction) of the dorsal waistline portion 40, and the side joint portion 20 (side joint portion on the side of the dorsal waistline portion 40). ) is an elastic member provided on the ventral side (lower side). The end elastic portion 47a is along the lateral direction and can be expanded in the lateral direction. The inclined elastic portions 47b are elastic members provided on both sides of the dorsal waist portion 40 in the lateral direction and on the ventral side (lower side) of the side joint portion 20. The inclined elastic portions 47b are inclined from the inside to the outside in the lateral direction and from the ventral side to the dorsal side, and from the inside to the outside in the lateral direction and from the ventral side to the dorsal side. It can be expanded and contracted in the inclined direction. Similar to the back waist elastic member 45, the curved elastic members 47 are arranged in plural in the vertical direction (vertical direction) between the skin side sheet 41 and the non-skin side sheet 42, and are arranged in a plurality in a desired direction. It is attached in the stretched state using an adhesive such as a hot melt adhesive.

(Absorbent main body 10)
The absorbent main body 10 is applied to the wearer's crotch area when worn, and absorbs excrement such as urine. FIG. 4 is a plan view of the absorbent main body 10. Note that in FIGS. 2 and 4, the non-skin side elastic member 16 (described later) is shown by a thick line for convenience, but this does not represent the thickness or elastic force of the non-skin side elastic member 16. 5A is a schematic cross-sectional view taken along the line XX in FIG. 4. FIG. FIG. 5B is a schematic cross-sectional view taken along the YY arrow in FIG. 4. FIG. 5C is a schematic cross-sectional view taken along the Z-Z arrow in FIG. 4. FIG. 5A shows a cross section taken along line XX, and the member located on the ventral side of line XX is omitted. FIG. 5B shows a cross section along YY, and the member located on the ventral side of YY is omitted. FIG. 5C shows a cross section along ZZ, and the member located on the ventral side of ZZ is omitted.

The absorbent main body 10 includes an absorbent body 11 that absorbs excrement, a top sheet 12 disposed closer to the skin than the absorbent body 11, a back sheet 14 disposed closer to the non-skin side than the absorbent body 11, and an exterior. It has a sheet 15 and a non-skin side elastic member (elastic member) 16. However, the absorbent main body 10 may include sheet members other than this. For example, a second sheet (not shown) may be provided between the top sheet 12 and the absorbent core 11.

The absorbent body 11 has an absorbent core 11a and a core wrap sheet 11b. FIG. 6 is a plan view of the absorbent body 11. The absorbent core 11a is a member that absorbs and retains excrement, and is formed of liquid absorbent fibers such as pulp fibers mixed with super absorbent polymer (SAP). The absorbent core 11a of this embodiment has a substantially hourglass shape in plan view. The absorbent core 11a has a constricted part with a shortened horizontal length at the center in the vertical direction, and a narrowest part with the shortest horizontal length of the absorbent core 11a is located on the ventral side of the center CL. It has a narrow portion 11N. The absorbent core 11a has the widest ventral part 11MA and the widest dorsal part 11MB, which have the widest horizontal length, respectively, on the ventral side and the dorsal side of the center CL in the longitudinal direction. The lengths of the widest ventral part 11MA and the widest dorsal part 11MB are approximately the same. Note that the shape of the absorbent core 11a is not limited to this shape, but can be any shape. Further, in the present embodiment, the absorbent core 11a has one layer, but two layers of the absorbent core 11a may be stacked in the thickness direction.

The outer peripheral surface of the absorbent core 11a is covered with a sheet member such as a liquid-permeable core wrap sheet 11b made of tissue paper, nonwoven fabric, or the like. Note that the core wrap sheet 11b may not necessarily be provided.

The absorbent core 11a has a pair of deformation guiding parts S. The pair of deformation guide portions S guides deformation of the absorbent core 11a. The deformation guiding part S of this embodiment is a groove part made thinner by cutting to such an extent that it does not penetrate in the thickness direction, and is provided on the dorsal side from the center CL. In addition, as shown in FIG. 4, etc., the pair of deformation guide portions S has a symmetrical shape with respect to the center line CC in the lateral direction, and extends from the ventral side in the longitudinal direction to the dorsal side, and in the lateral direction. These are linear grooves that slope from the inside to the outside. Having the deformation guide portion S makes it easier for the absorbent core 11a to deform using the deformation guide portion S as a starting point. However, the deformation guide portion S may have any shape and size depending on the deformation of the absorbent core 11a. Further, the deformation guiding portion S is not limited to the groove portion, but may be a penetrating portion penetrating in the thickness direction, a compressed portion compressed in the thickness direction, or the like, which can induce deformation. Note that the deformation guiding section S does not necessarily need to be provided.

The top sheet 12 is a liquid-permeable sheet, and for example, a hydrophilic air-through nonwoven fabric, a spunbond nonwoven fabric, or the like is used. In this embodiment, both sides in the lateral direction are folded back toward the non-skin side so as to wrap around the absorbent body 11 as shown in FIGS. 5A to 5C.

The absorbent body 11 has a back sheet 14 on the non-skin side, and a hydrophobic exterior sheet 15 disposed on the non-skin side. As the back sheet 14, for example, a resin film or the like is used, and as the exterior sheet 15, for example, a flexible nonwoven fabric or the like is used. The exterior sheet 15 is disposed on the non-skin side of the backsheet 14 and forms a leak-proof wall portion 50 on the skin side of the top sheet 12.

As shown in FIG. 2, FIG. 4, and FIG. 5B, a pair of longitudinal holes are provided at both ends of the absorbent body 10 between the back sheet 14 and the exterior sheet 15, and in the crotch area when worn. A non-skin side elastic member 16 is provided. The crotch region corresponds to between the ventral waist region 30 and the dorsal waist region 40 in the longitudinal direction of the diaper 1 in the unfolded and stretched state, and in this crotch region, both ends of the diaper 1 10. Specifically, as shown in FIG. 2 etc., the pair of non-skin side elastic members 16 are elastic members that are vertically expandable and have a shorter length in the vertical direction than leakage prevention wall elastic members 51 and 52, which will be described later. It is a member and is provided between the ventral side widest part 11MA and the dorsal side widest part 11MB of the absorbent core 11a, and straddles the center CL. In this embodiment, three rubber threads extending in the longitudinal direction are fixed in a stretched state between the back sheet 14 and the exterior sheet 15 with an adhesive or the like. By shrinking the non-skin side elastic member 16, both longitudinal ends of the absorbent main body 10 including the absorbent core 11a can be easily raised toward the skin side when worn, and the longitudinal center part can be easily depressed. In addition, it becomes easier to curve the shape of the absorbent core 11a.

A pair of leakage prevention walls 50 are provided on both sides of the absorbent body 10 in the lateral direction along the longitudinal direction of the absorbent body 10. In this embodiment, the leak-proof wall section 50 is formed of the exterior sheet 15 and includes leak-proof wall elastic members 51 and 52. Specifically, in the lateral direction, a part of the exterior sheet 15 extends outward from both ends of the absorbent body 11 and is bent at multiple points toward the skin side as shown in FIGS. 5A to 5C, thereby forming a leakage prevention wall. The elastic members 51 and 52 are fixed to the exterior sheet 15 to form a pair of leakage prevention walls 50 having a substantially S-shaped cross section.

The pair of leakage prevention wall sections 50 includes a skin side leakage prevention wall section 50a provided closest to the skin side, and a non-skin side leakage prevention wall section 50b provided on the non-skin side from the skin side leakage prevention wall section 50a, respectively. have. Four leak-proof wall elastic members 51 along the vertical direction are fixed to the skin-side leak-proof wall portion 50a in line with the horizontal direction between the folded exterior sheets 15. The four leak-proof wall elastic members 51 are arranged closer to the outer tip end side of the leak-proof wall portion 50 in the lateral direction. Two leak-proof wall elastic members 52 along the vertical direction are fixed to the non-skin side leak-proof wall portion 50b in line with the horizontal direction between the folded exterior sheets 15. The two leak-proof wall elastic members 52 are arranged closer to the lateral inner tip of the leak-proof wall portion 50 . When the diaper 1 is worn, the leak-proof wall portion 50 stands up on the wearer's skin side based on the elasticity of the leak-proof wall elastic members 51 and 52, and fits into the wearer's crotch area.

As shown in FIG. 4, end fixing portions are provided at both end portions of the absorbent main body 10 to fix the leakage prevention wall portion 50 to each end portion on the ventral side and the dorsal side in the longitudinal direction of the diaper 1. 53 are provided. Each end fixing part 53 includes a fixing part that fixes at least a part of the skin-side leak-proof wall part 50a and the non-skin-side leak-proof wall part 50b facing each other with an adhesive or the like, and a fixing part that fixes at least a part of the skin-side leak-proof wall part 50a and the non-skin-side leak-proof wall part 50b facing each other, and Each has a fixing part that fixes the wall part 50b and at least a part of the top sheet 12 with an adhesive or the like. In the longitudinal direction of the absorbent main body 10, the portion of the exterior sheet 15 between the end fixing portions 53 becomes a portion where the leakage prevention wall portion 50 can stand up. For example, when the wearer is in a sleeping position, even if the excrement blocked by the leakage prevention wall part 50 flows back and forth, the excrement can be dammed by the end fixing parts 53 at both longitudinal ends. This can suppress front and rear leaks.

The absorbent main body 10 also has intermittent fixation that fixes the leakage prevention wall section 50 to the top sheet 12 at a position vertically spaced from the ventral end fixing section 53 and the dorsal end fixing section 53. It has a section 54. As shown in FIG. 5A, the intermittent fixing section 54 fixes the non-skin side leakage prevention wall section 50b and the top sheet 12, which are opposed to each other, with an adhesive or the like. By providing the intermittent fixing portions 54 of the leakage prevention wall portion 50 to shorten the length of the portion that can stand up in the lateral direction, it is possible to suppress the absorbent core 11a from sagging when worn.

Furthermore, as shown in FIGS. 4 and 5B, the inner end in the lateral direction of the leakage prevention wall 50 is at least part of the skin side leakage prevention wall 50a and the non-skin side leakage prevention wall 50b that face each other. It has a knob fixing part 55 for joining and fixing. Specifically, the knob fixing part 55 joins a part between the skin-side leak-proof wall part 50a and the non-skin-side leak-proof wall part 50b with an adhesive or the like. The knob fixing part 55 of this embodiment is provided along the longitudinal direction (vertical direction) of the absorbent main body 10 (FIG. 4). By providing the knob fixing part 55, it becomes easier to maintain the folded shape of the leak-proof wall part 50 by the exterior sheet 15. In the worn state, the leak-proof wall elastic member 52 of the non-skin-side leak-proof wall 50b causes the non-skin-side leak-proof wall 50b to stand up on the skin side, while the leak-proof wall disposed on the skin-side leak-proof wall 50a The wall elastic member 51 allows the skin-side leakage prevention wall portion 50a to easily come into surface contact with the wearer's skin. Moreover, since the knob fixing part 55 is a relatively rigid part, it becomes easier to maintain the surface shape of the skin-side leakage prevention wall part 50a, and it becomes easier to firmly adhere to the wearer's skin.

Although the above-mentioned end fixing part 53, intermittent fixing part 54, and knob fixing part 55 are each formed by applying an adhesive, the present invention is not limited thereto. For example, it may be formed using pressure bonding means such as embossing. Further, the end fixing part 53, the intermittent fixing part 54, and the knob fixing part 55 are not limited to a rectangular shape in plan view, but may have any shape, and one or more fixing parts are arranged in the horizontal or vertical direction. It may be arranged in a line. Although thread rubber was used as the non-skin side elastic member 16 and the leakage wall elastic members 51 and 52, they are not limited thereto. For example, an elastic member such as a stretchable sheet may be used. In addition, although the non-skin side elastic member 16 and the leakage wall elastic members 51 and 52 each have a plurality of elastic members (rubber threads), they may each have one elastic member, or any number of two or more. good.

<About the pair of pressing parts E>
As shown in FIG. 2 and the like, the absorbent main body 10 has a pair of compressed parts E (Ea, Eb) on both sides of the ventral side from the center CL. The compressed portion E is a compressed portion obtained by compressing the absorbent core 11a covered with the core wrap sheet 11b by applying pressure in the thickness direction from the skin side. The pair of pressing parts E includes one side pressing part Ea on one side in the lateral direction and the other side pressing part Eb on the other side. The one-side compressed portion Ea and the other-side compressed portion Eb have symmetrical shapes with respect to the horizontal center line CC. In the present embodiment, the one side compressed part Ea includes two one side pressed parts Ea1 and Ea2 having a continuous wave shape along the longitudinal direction, and the other side compressed part Eb has continuous waves along the vertical direction. It is provided with two mold-shaped one side pressing parts Eb1 and Eb2.

The one-side compressed portion Ea1 is also referred to as the inner compressed portion Ea1, and the one-side compressed portion Ea2 is also referred to as the outer compressed portion Ea2. The other side compressed portion Eb1 is also referred to as the inner side compressed portion Eb1, and the other side compressed portion Eb2 is also referred to as the outer side compressed portion Eb2. The outer compressed part Ea2 is provided on the outer side (on one side) of the inner compressed part Ea1 in the lateral direction, and the outer compressed part Eb2 is provided on the outer side (on the other side) than the inner compressed part Eb1 in the lateral direction. It is being

The pair of compressed parts E are provided in the crotch region when the absorbent core 11a is worn when the diaper 1 is in the unfolded and stretched state, and each has a curved part F that curves outward in the lateral direction. ing. In the diaper 1 of this embodiment, as shown in FIG. 6, the one side compressed part Ea1 has a curved part Fa1 that curves outward in the lateral direction, and the other side compressed part Eb1 has a curved part Fa1 that curves outward in the lateral direction. It has a curved portion Fb1 that curves toward the front. This maintains the softness of the absorbent core 11a in the portion surrounded by the curved part Fa1 and the curved part Fb1 of the pair of compressed parts E, and makes it easier to maintain the shape of the absorbent core 11a. It is possible to reduce the possibility that the rigidity of the outer side in the lateral direction of 11a becomes excessively high, and improve the feel against the wearer's skin when worn.

FIG. 7 is a diagram showing an absorbent body 11 of a comparative example. For example, as shown in FIG. 7A, when the absorbent core 11a is provided with a linear compressed portion E along the longitudinal direction, the area where the compressed portion E is provided is small relative to the absorbent core 11a. When worn, the absorbent core 11a may lose its shape due to absorption of excrement such as urine or movement of the wearer. If the number of linear compressed parts E is increased in order to prevent the absorbent core 11a from losing its shape, the absorbent core 11a will become excessively hard, which may reduce the feel against the wearer's skin. .

Moreover, FIG. 7B shows an absorbent core 11a (absorbent core 11) in which a plurality of linear compressed parts E having an inclination with respect to the longitudinal direction are arranged in the longitudinal direction, and FIG. The absorbent core 11a (absorbent core 11) is provided with a zigzag-shaped compressed part E by arranging linear compressed parts E continuously in the longitudinal direction. As shown in FIGS. 7B and 7C, when the linear compressed portion E has an inclination with respect to the vertical direction, the area where the compressed portion E is provided with respect to the absorbent core 11a becomes wider, so the absorbent core 11a This makes it easier to prevent the product from losing its shape. However, when the compressed portion E shown in FIG. 7B is worn, when a force is applied from the outer side of the absorbent core 11a in the lateral direction to the inner side of the absorbent core 11a by the wearer's legs, the compressed portion E shown in FIG. , and the end on the center CL side becomes a corner, causing the diaper 1 (absorbent core 11a) to locally contact the wearer's legs, reducing the contact with the wearer's skin or causing discomfort to the wearer. There is a risk that Also in the compressed part E shown in FIG. 7C, when worn, the outer apex in the lateral direction of the compressed part E, which has high rigidity, becomes a corner, and the diaper 1 (absorbent core 11a) is locally attached to the wearer's legs. There is a risk that such contact may reduce the contact with the wearer's skin or cause discomfort to the wearer.

On the other hand, as shown in FIG. 6 etc., the diaper 1 includes a pair of compressed parts E, one side compressed part Ea1 has a curved part Fa1 that curves outward in the lateral direction, and the other side compressed part Eb1 has a curved portion Fb1 that curves outward in the lateral direction, which reduces the risk of the absorbent core 11a losing its shape compared to a linear compressed portion E as shown in FIG. 7A. The shape of the absorbent core 11a can be easily maintained. The compressed portion E is a portion with high rigidity in the absorbent core 11a, and is also composed of a curved portion Fa1 that curves toward the outside in the lateral direction and a curved portion Fb1 that curves toward the outside in the lateral direction. The surrounded portion makes it easier to maintain the softness of the absorbent core 11a. Furthermore, since the curved portions Fa1 and Fb1 are curved toward the outside in the lateral direction, when worn, corners are formed on the outside in the lateral direction of the absorbent core 11a by the compressed portion E having high rigidity, resulting in excessive This improves the contact of the diaper 1 against the wearer's skin even when the wearer's legs are brought into contact with the diaper 1 from the outside in the lateral direction while the diaper is being worn. be able to.

Regarding the pair of compressed parts E, one compressed part Ea (Ea1, Ea2) is provided on one side from the center CC in the horizontal direction of the absorbent core 11a, and the compressed part Ea (Ea1, Ea2) is provided on the other side from the center CC. It has the other side compression part Eb (Eb1, Eb2). One side compressed part Ea1 is provided with curved parts Fa in the order of a first curved part Fa1, a second curved part Fa2, and a third curved part Fa3 from the ventral side in the longitudinal direction to the dorsal side, and the other side compressed part Eb1 is , the curved portions Fb are provided in the order of a first curved portion Fb1, a second curved portion Fb2, and a third curved portion Fb3 from the ventral side to the dorsal side in the longitudinal direction.

As shown in FIG. 6, in the one-side compressed part Ea1, the outermost end in the lateral direction of the first curved part Fa1 is provided ventrally than the outermost end in the lateral direction of the second curved part Fa2. . That is, the first curved portion Fa1 and the second curved portion Fa2 are provided at different positions in the vertical direction. Since the absorbent core 11a has the compressed part E including the first curved part Fa1 and the second curved part Fa2, it improves the skin contact with the wearer when it comes into contact with the diaper 1 from the outside in the lateral direction, Since the rigidity of the portion between the lateral outer end of the first curved part Fa1 and the lateral outer end of the second curved part Fa2, which are provided at different positions in the longitudinal direction, can be increased, absorbency is improved. The rigidity of the core 11a can be increased, the shape of the absorbent core 11a can be reduced in a worn state, and the shape of the absorbent core 11a can be easily maintained.

Furthermore, as shown in FIG. 6, the first curved part Fa1 and the second curved part Fa2 constitute at least a part of the one side compressed part Ea1, and the one side compressed part Ea1 is continuous in the longitudinal direction. is preferred. Specifically, the one side compressed part Ea1 includes, from the ventral side in the vertical direction toward the dorsal side, a first curved part Fa1, a part that curves inward in the horizontal direction, a second curved part Fa2, and a part curved inward in the horizontal direction. The curved portion and the third curved portion Fa3 are arranged in this order, and these are provided continuously. For example, if the one-side compressed part Ea1 has a structure in which a plurality of compressed parts are arranged intermittently in the vertical direction, the parts where the compressed parts are interrupted have low rigidity; There is a risk that the absorbent core 11a may be bent along the lateral direction or the absorbent core 11a may be torn. On the other hand, in the vertical direction of the absorbent core 11a, the one side compressed part Ea1, which includes the first curved part Fa1 and the second curved part Fa2 as a part, is continuous in the vertical direction. The region overlapping the compressed portion Ea1 can reduce the possibility that the absorbent core 11a will bend along the lateral direction. Moreover, in the longitudinal direction of the absorbent core 11a, it is possible to reduce the risk of the absorbent core 11a being torn in a region overlapping with the one side compressed portion Ea1.

In the diaper 1 of this embodiment, the one side compressed part Ea and the other side compressed part Eb1 have the same configuration, and the one side compressed part Ea (Ea1, Ea2) and the other side compressed part Eb (Eb1, Eb2). , symmetrical about the lateral center CC.

In the diaper 1 of the present embodiment, the one side compressed part Ea1 is arranged between a plurality of curved parts Fa1, Fa2, Fa3 which curve outward in the lateral direction and each of the curved parts Fa1, Fa2, Fa3. Each of the curved parts Fa1, Fa2, Fa3 and the part curved inward in the lateral direction are continuous to form one one-side compressed part Ea1. . In such a case, the curved portions Fa1, Fa2, and Fa3 refer to the portions on one side in the lateral direction from the straight line connecting the inflection points in the one side compressed portion Ea1, and the portions that curve toward the inside in the lateral direction are: This is the part on the other side in the lateral direction from the straight line connecting the inflection points in the one side compressed part Ea1.

In addition, as described above, the pair of compressed parts E includes one side compressed part Ea on one side from the horizontal center CC of the absorbent core 11a, and the one side compressed part Ea has an inner pressed part Ea1 and an inner pressed part Ea. It has an outer compressed part Ea2 located laterally outside of the compressed part Ea1. Similarly, the absorbent core 11a includes the other side compressed part Eb on the other side from the center CC in the lateral direction, and the other side compressed part Eb includes an inner side compressed part Eb1 and an outer side in the lateral direction from the inner side compressed part Eb1. It has an outer compressed part Eb2 located at . Since the one side compressed portion Ea includes a plurality of compressed portions in the lateral direction, such as the inner compressed portion Ea1 and the outer compressed portion Ea2, the rigidity of the absorbent core 11a in the lateral direction can be increased. This reduces the risk of the absorbent core 11a losing its shape, making it easier to maintain the shape of the absorbent core 11a.

Furthermore, the maximum value Wes of the lateral distance between the inner pressing part Ea1 and the outer pressing part Ea2 is the lateral length Wew from one end to the other end in the lateral direction of the inner pressing part Ea1. (Wes<Eew). By this, the maximum value Wes of the lateral distance between the inner pressing part Ea1 and the outer pressing part Ea2 is determined by the lateral length from one end to the other end in the lateral direction of the inner pressing part Ea1. Since the rigidity of the region between the inner compressed part Ea1 and the outer compressed part Ea2 in the lateral direction can be made higher than when the length is longer than Wew, the rigidity of one side of the absorbent core 11a in the lateral direction is increased. This makes it easier to maintain the shape of one side of the absorbent core 11a in the lateral direction.

It is preferable that the pair of compressed parts E including the curved parts Fa1 and Fb1 be provided on the ventral side of the diaper 1 from the longitudinal center CL. The compressed portion E is a portion with high rigidity in the absorbent core 11a. Therefore, by providing the compressed part E on the ventral side of the center CL, the wearer's discomfort caused by the compressed part E coming into contact with the wearer's buttocks when the wearer is in a sitting or lying down position is reduced. can be done.

Furthermore, it is more preferable that the pair of compressed portions E be provided in at least a portion of the region corresponding to the urinary opening when the absorbent core 11a is worn in the longitudinal direction. The region corresponding to the urinary opening of the absorbent core 11a is a region of the absorbent core 11a that faces the position of the urination opening by the wearer when worn. For example, the position of the urinary opening in the diaper 1 intended for adult men is approximately 130 mm toward the ventral side from the longitudinal center CL, and the position of the urinary opening in the case of the diaper 1 intended for adult women. is a position approximately 50 mm toward the ventral side from the longitudinal center CL. Generally, the area corresponding to the urinary opening and the position of the urinary opening in a disposable diaper or absorbent pad differ depending on whether the diaper is worn by an adult or an infant, and also by whether the diaper is worn by a man or a woman. Therefore, the area corresponding to the urinary opening may be set to include the positions of both the male and female urinary openings, and in the case of a male-only diaper or a female-only diaper, the urinary opening position of either one may be set. It can also be set to include. Although the shape of the absorbent core 11a tends to collapse due to absorption of urine in the worn state, the compressed portion E is provided in at least a part of the region of the absorbent core 11a corresponding to the urinary opening in the vertical direction. By doing so, it is possible to reduce the possibility that the shape of the absorbent core 11a will collapse even when urine is absorbed, and to make it easier to maintain the shape.

Regarding the one side compressed part Ea and the other side compressed part Eb, the lateral length We from one end of the one side compressed part Ea to the other end is determined from the other end of the one side compressed part Ea to the other side. It is preferable that the lateral length Wf of the side compressed portion Eb to one end is longer (We<Wf). In the lateral direction, the region from the other side end of the one side compressed part Ea to the one side end of the other side compressed part Eb is a part with lower rigidity than the compressed part E, so that it is less rigid than the absorbent core 11a. When a force is applied, it becomes an area that buffers the force. Therefore, the lateral length Wf from the other side end of the one side pressing part Ea to the one side end of the other side pressing part Eb is the width Wf from one side end of the one side pressing part Ea to the other side end. By making the lateral length We longer than the lateral length We, the lateral length Wf from the other end of the one side compressed part Ea to the one end of the other side compressed part Eb is set to one side of the one side compressed part Ea. This allows the absorbent core 11a to be flexibly deformed, since it can serve as a buffer area for the force applied to the absorbent core 11a, compared to when the horizontal length We from one end to the other end is made shorter. Since it becomes easy to provide a wide soft region in the absorbent core 11a while making the absorbent core 11a easy to wear, the feel on the skin when worn can be improved.

Further, in the absorbent core 11a including the one side compressed part Ea and the other side compressed part Eb, from the one side end of the narrowest part 11N having the shortest horizontal length of the absorbent core 11a, the one side compressed part The lateral length Wf from the other end of the one side compressed part Ea to one end of the other side compressed part Eb is longer than the lateral length Wne from the other end of Ea to one end. is preferable (Wne<Wf). The more the pair of compressed portions E are provided on the outer sides of the absorbent core 11a in the lateral direction, the more the possibility that the shape of the absorbent core 11a collapses from the outer side in the lateral direction can be reduced. Therefore, the length Wne in the lateral direction from one side end of the absorbent core 11a to one end of the one side compressed part Ea in the narrowest part 11N is longer than the other end of the one side compressed part Ea. By increasing the lateral length Wf from 1 to 1 end of the other side compressed portion Eb, the width of the lateral outside (one side) of the absorbent core 11a is longer than when the length Wf is shorter than the length Wne. Since the one-side compressed portion Ea can be provided on the side), it is possible to reduce the possibility that the absorbent core 11a collapses from the outside (one side) in the lateral direction.

In the one-side compressed portion Ea and the other-side compressed portion Eb of the absorbent core 11a, the length Le in the longitudinal direction from the ventral end to the dorsal end of the one-side compressed portion Ea is the same as the other side of the one-side compressed portion Ea. It is preferable that it is longer than the lateral length Wf from the side end to the one side end of the other side compressed part Eb (Wf<Le). The longer the length of the one-side compressed portion Ea in the vertical direction is, the easier it is to reduce the deformation of the absorbent core 11a over a wider range in the vertical direction. Therefore, the length Le in the longitudinal direction from the ventral end to the dorsal end of the one side compressed part Ea is the length Le from the other end of the one side compressed part Ea to the one end of the other side compressed part Eb. By making the length Le longer than the length Wf in the horizontal direction, the compressed portion Ea on one side of the absorbent core 11a can be made longer in the vertical direction than when the length Le is shorter than the length Wf, so that the absorbent In a wide range in the vertical direction of the core 11a, the risk of the absorbent core 11a losing its shape is reduced, making it easier to maintain its shape.

Further, as shown in FIG. 2, in the diaper 1 having a pair of waist portions 30 and 40, when looking at the diaper 1 in the stretched and unfolded state in the thickness direction, the ventral waist portion 30 and the absorbent core 11a are In the overlapping region R, it is preferable that the area of the portion where the ventral waist portion 30 and the pair of compressed portions E do not overlap is larger than the area of the portion where the ventral waist portion 30 and the pair of compressed portions E overlap. In FIG. 2, when viewed in the thickness direction, a region R where the ventral waistline portion 30 and the absorbent core 11a overlap is indicated by a diagonally downward-left diagonal line. This area comparison can be performed by a well-known method such as visual comparison. Since the compressed portion E is a portion with high rigidity, the smaller the area where the ventral waist portion 30 and the compressed portion E overlap when viewed in the thickness direction, the less discomfort the wearer feels when wearing the garment. It can improve the texture. Therefore, when viewed in the thickness direction, the area of the region R where the ventral waist portion 30 and the absorbent core 11a overlap, where the ventral waist portion 30 and the pair of compressed portions E do not overlap, is defined as the area of the ventral waist circumference. By making the area larger than the area where the portion 30 overlaps with the pair of compressed portions E, the area of the portion where the ventral waist portion 30 and the pair of compressed portions E do not overlap becomes larger than the area where the ventral waist portion 30 and the pair of compressed portions E overlap. Compared to the case where the area is smaller than the area of the overlapping portion, it is possible to reduce the possibility that the pair of compressed portions E will cause discomfort to the wearer's skin when worn.

Regarding the diaper 1, the length (thickness) in the thickness direction of the absorbent core 11a in the compressed part E is 15% or more of the length (thickness) in the thickness direction of the central portion of the absorbent core 11a in the lateral direction. , and preferably 40% or less. When the length of the absorbent core 11a in the thickness direction in the squeezed portion E is shorter than 15% of the length in the thickness direction of the central portion of the absorbent core 11a in the lateral direction, the squeezed portion E is excessively hard. It is possible to reduce the possibility that the wearer's skin will feel uncomfortable due to the wearer's skin. Moreover, the rigidity of the absorbent core 11a is improved more than when the length in the thickness direction of the compressed portion E is longer than 40% of the length in the thickness direction of the central portion of the absorbent core 11a in the lateral direction. , it becomes easier to reduce the deformation of the absorbent core 11a.

Further, as described above, the diaper 1 has the absorbent main body 10 including the absorbent core 11a, and the absorbent main body 10 has leak-proof wall elastic members 51 along the vertical direction at both ends in the horizontal direction. , 52. This leak-proof wall portion 50 rises toward the skin side due to the contraction of the leak-proof wall elastic members 51 and 52, thereby forming a wall and reducing the risk of excrement leaking to the outside of the absorbent main body 10 in the lateral direction. are doing.

When the diaper 1 has the leak-proof wall part 50, as shown in FIG. 4, it is preferable that a pair of compressed parts E are provided inside the leak-proof wall part 50 in the lateral direction. The pair of compressed portions E reduces the risk of the absorbent core 11a losing its shape, making it easier to maintain the shape of the absorbent core 11a, thereby making it easier to absorb excrement. In particular, when the pair of compressed parts E are provided on the ventral side of the longitudinal direction CL, the absorbent core 11a can easily absorb much liquid from urine in its planar shape, so that excrement can be easily absorbed. In addition, since the leak-proof wall part 50 is a part that bulges toward the skin side, the compressed part E with high rigidity is not provided at the position overlapping with the leak-proof wall part 50 when viewed in the thickness direction. As the leakage-preventing wall portion 50 rises, the compressed portion E comes closer to the wearer's skin, reducing the risk of reducing the skin contact with the wearer or giving the wearer a sense of discomfort.

In the case where the absorptive main body 10 has a pair of leak-proof wall parts 50 provided with leak-proof wall elastic members 51 and 52 along the vertical direction at both ends in the horizontal direction, the pair of leak-proof wall parts 50 are as shown in FIG. As shown in FIGS. 5A to 5C, a skin-side leak-proof wall section 50a provided closest to the skin side, and a non-skin-side leak-proof wall section 50b provided on the non-skin side from the skin-side leak preventive wall section 50a, The inner end in the lateral direction of the leak-proof wall part 50 has a knob fixing part to which at least a part of the skin-side leak-proof wall part 50a and the non-skin-side leak-proof wall part 50b, which face each other, are fixed. (First fixing part) 55 is preferably provided. As shown in FIGS. 4 and 5B, the knob fixing part 55 of this embodiment is formed by adhesive in a rectangular area, one on the ventral side and one on the dorsal side from the center CL in the longitudinal direction, to form a skin-side leakage prevention wall. The portion 50a and the non-skin side leakage prevention wall portion 50b are bonded and fixed. By providing the knob fixing portion 55, it becomes easier to maintain the folded shape of the exterior sheet 15 of the leak prevention wall portion 50, and the skin side leak prevention wall portion 50a and the non-skin side leak prevention wall portion 50b of the leak prevention wall portion 50 are easily maintained. This makes it easier to maintain the shape of the two-layer structure.

In this way, in the case where the knob fixing part 55 that joins and fixes the skin-side leak-proof wall part 50a and the non-skin-side leak-proof wall part 50b is provided, in the vertical direction, the pair of compressed parts E are fixed to the knob fixing part. It is preferable to have a portion overlapping with 55. The part where the knob fixing part 55 is provided is a part that tends to come into close contact with the wearer's skin when worn, and force is not applied to the absorbent core 11a through the leakage prevention wall part 50. , where the absorbent core 11a is easily deformed so as to crush it, the pair of compressed parts E overlap with the knob fixing part 55 in the longitudinal direction, so that the rigidity of the compressed part E improves absorbency. This reduces the deformation of the core 11a and makes it easier to maintain the shape of the absorbent core 11a.

Further, in the case where the absorptive main body 10 has a pair of leak-proof wall parts 50 provided with leak-proof wall elastic members 51 and 52 along the vertical direction at both ends in the horizontal direction, the pair of leak-proof wall parts 50 are , as shown in FIGS. 5A to 5C, at least part of the non-skin side surface of the leak prevention wall section 50 and the skin side surface of the top sheet 12 are fixed at the inner end of the leak prevention wall section 50 in the lateral direction. It is preferable to have an intermittent fixing part (second fixing part) 54. As shown in FIGS. 4 and 5A, the intermittent fixing part 54 of the present embodiment is provided at the center in the vertical direction, and is attached to the non-skin side surface of the non-skin side leakage prevention wall part 50b using adhesive in a rectangular area. and the skin side surface of the top sheet 12 are bonded and fixed. Providing the intermittent fixing parts 54 makes it easier to maintain the shape of the leak-proof wall part 50 while fixing the leak-proof wall part 50 to the top sheet 12, so that the leak-proof wall part 50 is not exposed to the skin of the wearer. Makes contact easier. In addition, in this embodiment, although the leak-proof wall part 50 was set as the structure of two layers provided with the skin-side leak-proof wall part 50a and the non-skin-side leak-proof wall part 50b, it is not restricted to this. The leak-proof wall section 50 may have a one-layer structure consisting of only the skin-side leak-proof wall section 50a (non-skin-side leak-proof wall section 50b).

In the case where the diaper 1 includes the intermittent fixing portion 54 that joins the leakage prevention wall portion 50 and the top sheet 12, it is preferable that the pair of compressed portions E have a portion that overlaps with the intermittent fixing portion 54 in the longitudinal direction. The part where the intermittent fixing part 54 is provided is a part that tends to come into close contact with the wearer's skin when worn, and force is applied to the absorbent core 11a through the leakage prevention wall part 50. Deformation that crushes the absorbent core 11a is likely to occur. Therefore, in the longitudinal direction, by having a portion where the pair of compressed parts E overlaps with the intermittent fixing part 54, the rigidity of the compressed part E reduces the deformation of the absorbent core 11a, and maintains the shape of the absorbent core 11a. It becomes easier.

In the diaper 1 of this embodiment, the ventral waist portion 30 includes the ventral waist elastic member 35 that is expandable and contractible in the lateral direction, and when viewed in the thickness direction, the pair of compressed portions E are the waist elastic member 35 and the waist elastic member 35. It has non-overlapping parts. As a result, when viewed in the thickness direction, the part where the pair of compressed parts E and the waist elastic member 35 do not overlap, the contractile force of the ventral waist elastic member 35 allows the pair of highly rigid compressed parts E to be applied to the wearer's skin. Since the fear of being pressed against the wearer's skin is reduced, the feel against the wearer's skin can be improved.

On the other hand, in the diaper 1, the ventral waist portion 30 has a portion where the pair of compressed portions E do not overlap the waist elastic member 35, and the pair of compressed portions overlap the waist elastic member 35. They also have overlapping parts. In such a case, when viewed in the thickness direction, it is preferable that the elastic modulus of the waist elastic member 35 that overlaps with the pair of compressed parts E is lower than the elastic modulus of the waist elastic member 35 that does not overlap with the pair of compressed parts E. . In the diaper 1, the elastic modulus of the ventral waist elastic member 35 at the upper end of the ventral waist portion 30 is lower than the elastic modulus of the ventral waist elastic member 35 at the lower end. Therefore, even if the pair of compressed parts E have a portion that overlaps with the waist elastic member 35 when viewed in the thickness direction, the contractile force of the waist elastic member 35 causes the absorbent core 11a to come into contact with the wearer's skin. While making it easier to bring them into contact, it is possible to reduce the risk of adverse effects on the wearer's skin at the portion where the compressed portion E and the waist elastic member 35 overlap.

In addition, in order to improve the feel on the wearer's skin, when the ventral waist portion 30 is viewed in the thickness direction, the area of the portion where the pair of compressed portions E and the waist elastic member 35 do not overlap is equal to that of the pair. It is more preferable that the area is larger than the area where the compressed part E and the waist elastic member 35 overlap.

===Other embodiments===
Although the embodiments of the present invention have been described above, the above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to be interpreted as limiting the present invention. Further, the present invention may be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof.

In the above-described embodiment, a so-called three-piece pants-type diaper having the absorbent main body 10, the ventral waist portion 30, and the back waist portion 40 is illustrated, but the present invention is not limited thereto. For example, it may be a so-called two-piece type pants-type diaper that has an outer body in which the ventral waist portion and the dorsal waist portion are integrally formed continuously, and an absorbent body, or a tape-type disposable diaper. There may be.

Further, in the above-described embodiment, the disposable diaper 1 has been described, but the configuration of the above-described diaper 1 can be applied to an absorbent pad for a disposable diaper used together with a disposable diaper. For example, in the case of an absorbent pad for a disposable diaper, the structure of the present invention may be applied by using the absorbent body 10 in the diaper 1 described above as an absorbent pad.

In the above-described embodiment, the pair of compressed portions E has a portion that overlaps with the ventral waist elastic member 35 of the ventral waist portion 30 when viewed in the thickness direction, but the present invention is not limited to this. In the case where the abdominal girth part 30 includes the ventral girth elastic member 35 that can be expanded and contracted laterally, as in the diaper 1, the pair of compressed parts E overlap with the girth elastic member 35 when viewed in the thickness direction. It may also be configured without a portion. By doing so, it is possible to reduce the possibility that the pair of highly rigid compressed parts E will be pressed against the wearer's skin by the contractile force of the ventral waist elastic member 35, and the feel against the wearer's skin will deteriorate. can be done.

In the above-mentioned embodiment, one side compression part Ea1 and other side compression part Eb1 were each provided with a plurality of curved parts Fa1, Fa2, and Fa3, and curved parts Fb1, Fb2, and Fb3, but it is not restricted to this. For example, the one-side pressing portion Ea1 and the other-side pressing portion Eb1 may each be a pressing portion E consisting of only one curved portion Fa, Fb.

In the above-described embodiment, the one-side compressed part Ea1 includes, from the ventral side in the vertical direction toward the dorsal side, the first curved part Fa1, the part that curves inward in the lateral direction, the second curved part Fa2, and the part that curves inward in the lateral direction. The inwardly curved portion and the third curved portion Fa3 are lined up in this order to form a continuous wave-shaped configuration, but the structure is not limited to this. For example, the one-side compressed portion Ea1 may have a configuration consisting only of the curved portion Fa without having a portion that curves inward in the horizontal direction, or may have a linear compressed portion along the curved portion Fa and the vertical direction. You may do so. Furthermore, the one-side compressed portion Ea1 does not necessarily have to be continuous, and may have a discontinuous portion.

In the above-described embodiment, the one-side compressed portion Ea and the other-side compressed portion Eb are shaped symmetrically with respect to the lateral center CC, but the shape is not limited to this. For example, the one-side compressed portion Ea and the other-side compressed portion Eb may have different shapes or sizes. For example, the curved portion Fa1 of the one side compressed portion Ea1 and the curved portion Fb1 of the other side compressed portion Eb1 may be provided at different positions in the longitudinal direction.

In the above-described embodiment, the one-side compressed portion Ea includes two, the inner compressed portion Ea1 and the outer compressed portion Ea2, but the present invention is not limited thereto. The one-side compressed portion Ea may be composed of only the inner compressed portion Ea1, and may further include one or more compressed portions on the outside in the lateral direction in addition to the inner compressed portion Ea1 and the outer compressed portion Ea2. Good too.

1 Diapers (pants-type absorbent articles, disposable diapers),
10 absorbent body,
11 absorber,
11a absorbent core, 11b core wrap sheet,
12 Top sheet (skin side sheet),
14 back seat,
15 Exterior sheet,
16 Non-skin side elastic member (elastic member),
20 side joint (joint),
30 ventral waist part, 30sw side part,
31 Skin side sheet,
32 Non-skin side sheet,
35 ventral waist elastic member,
36 skin sheet,
40 dorsal girth, 40b buttocks region, 40sw side,
41 Skin side sheet,
42 Non-skin side sheet,
45 dorsal waist elastic member,
46 skin sheet,
47 curved elastic member, 47a end elastic part, 47b inclined elastic part,
50 leakage prevention wall part, 50a skin side leakage prevention wall part, 50b non-skin side leakage prevention wall part,
51 Leakage prevention wall elastic member, 52 Leakage prevention wall elastic member,
53 End fixing part,
54 Intermittent fixing part (second fixing part),
55 Knob fixing part (first fixing part),
BH waist opening, LH leg opening,
E compression part,
Ea one side pressing part, Eb other side pressing part,
F curved part,
Fa1 curved part, first curved part,
Fa2 curved part, second curved part,
Fa3 curved part, third curved part,
S Deformation guiding part

Claims (16)

It has a vertical direction, a horizontal direction, and a thickness direction that intersect with each other,
An absorbent pad or disposable diaper for a disposable diaper, comprising an absorbent core capable of absorbing liquid,
In the unfolded and extended state,
The absorbent core includes a pair of compressed parts along the longitudinal direction in the crotch region when worn,
An absorbent pad for a disposable diaper or a disposable diaper, wherein each of the pair of pressing parts has a curved part that curves outward in the lateral direction. The absorbent pad or disposable diaper for a disposable diaper according to claim 1,
An absorbent pad for a disposable diaper or a disposable diaper, characterized in that the pair of compressing portions are provided on the ventral side of the longitudinal center of the disposable diaper or the absorbent pad for a disposable diaper. The absorbent pad or disposable diaper for a disposable diaper according to claim 2,
An absorbent pad for a disposable diaper or a disposable diaper, characterized in that, in the longitudinal direction, the pair of compressed portions are provided in at least a part of a region corresponding to a urinary opening when the absorbent core is worn. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
The pair of compressing parts includes a one-side compressing part provided on one side of the horizontal center of the absorbent core, and a second-side compressing part provided on the other side of the absorbent core from the horizontal center of the absorbent core. has a department;
The one-side compression part includes a first curved part and a second curved part,
An absorbent pad for a disposable diaper, wherein the outermost end of the first curved section in the lateral direction is provided ventrally than the outermost end of the second curved section in the lateral direction; disposable diapers. The absorbent pad or disposable diaper for a disposable diaper according to claim 4,
The first curved part and the second curved part constitute at least a part of the one-side compressed part,
An absorbent pad for a disposable diaper or a disposable diaper, wherein the one side compressed portion is continuous in the longitudinal direction. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
The pair of compressing parts includes a one-side compressing part provided on one side of the horizontal center of the absorbent core, and a second-side compressing part provided on the other side of the absorbent core from the horizontal center of the absorbent core. has a department;
From the length in the lateral direction from the one end to the other end of the one side pressing part,
An absorbent pad for a disposable diaper or a disposable diaper, characterized in that the length in the lateral direction from the other end of the one-side pressing section to the one-side end of the other side pressing section is longer. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
The pair of compressing parts includes a one-side compressing part provided on one side of the horizontal center of the absorbent core, and a second-side compressing part provided on the other side of the absorbent core from the horizontal center of the absorbent core. has a department;
From the horizontal length from the one side end of the absorbent core at the narrowest part where the horizontal length is the shortest to the one side end of the one side compressed part,
An absorbent pad for a disposable diaper or a disposable diaper, characterized in that the length in the lateral direction from the other end of the one-side pressing section to the one-side end of the other side pressing section is longer. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
The pair of compressing parts includes a one-side compressing part provided on one side of the horizontal center of the absorbent core, and a second-side compressing part provided on the other side of the absorbent core from the horizontal center of the absorbent core. has a department;
The length in the longitudinal direction from the ventral end to the dorsal end of the one side compressed part is longer than the horizontal length from the one end to the other end of the one side compressed part. An absorbent pad for disposable diapers or a disposable diaper characterized by its long length. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
A disposable diaper having a pair of girth parts,
Viewed in the thickness direction,
Of the region where the waist portion and the absorbent core overlap, the area of the portion where the waist portion and the pair of compressed portions do not overlap is larger than the area of the portion where the waist portion and the pair of compressed portions overlap. An absorbent pad for disposable diapers or a disposable diaper characterized by the following. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
A disposable diaper having a pair of girth parts,
The waist portion includes a waist elastic member that is expandable and contractible in the lateral direction,
An absorbent pad for a disposable diaper or a disposable diaper, wherein the pair of compressed parts have a portion that does not overlap with the waist elastic member when viewed in the thickness direction. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
The pair of compressing parts includes a one-side compressing part provided on one side of the horizontal center of the absorbent core, and a second-side compressing part provided on the other side of the absorbent core from the horizontal center of the absorbent core. has a department;
An absorbent pad for a disposable diaper or a disposable diaper, wherein the one-side compressed portion includes an inner compressed portion and an outer compressed portion located outside the inner compressed portion in the lateral direction. The absorbent pad or disposable diaper for a disposable diaper according to claim 11,
The maximum value of the lateral distance between the inner compressed part and the outer compressed part is shorter than the lateral length from the one end to the other end of the inner compressed part. An absorbent pad for disposable diapers or a disposable diaper. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
The length in the thickness direction of the absorbent core in the compressed portion is 15% or more of the length in the thickness direction of the central portion of the absorbent core in the lateral direction, and 40% or less. An absorbent pad for disposable diapers or a disposable diaper, characterized in that: An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
an absorbent body including the absorbent core;
The absorbent main body has a pair of leak-proof wall portions provided with leak-proof wall elastic members along the vertical direction at both ends in the horizontal direction,
The leakage prevention wall portion includes a skin side leakage prevention wall portion provided closest to the skin side, and a non-skin side leakage prevention wall portion provided on the non-skin side from the skin side leakage prevention wall portion. ,
The inner end portion of the leakage prevention wall portion in the lateral direction has a first fixing portion to which at least a portion of the skin side leakage prevention wall portion and the non-skin side leakage prevention wall portion that are opposed to each other are bonded and fixed. ,
An absorbent pad for a disposable diaper or a disposable diaper, wherein the pair of compressed portions has a portion that overlaps the first fixing portion in the longitudinal direction. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
an absorbent main body comprising the absorbent core and the skin-side sheet;
The absorbent main body has a pair of leak-proof wall portions provided with leak-proof wall elastic members along the vertical direction at both ends in the horizontal direction,
a second fixing portion in which at least a portion of the non-skin side surface of the leakage prevention wall portion and the skin side surface of the skin-side sheet facing each other are bonded and fixed;
An absorbent pad for a disposable diaper or a disposable diaper, wherein the pair of compressed portions has a portion overlapping with the second fixing portion in the longitudinal direction. An absorbent pad for a disposable diaper or a disposable diaper according to any one of claims 1 to 3,
an absorbent body including the absorbent core;
The absorbent main body has a leak-proof wall portion provided with a leak-proof wall elastic member along the vertical direction at both ends in the horizontal direction,
An absorbent pad for a disposable diaper or a disposable diaper, characterized in that the pair of compressed parts are provided inside the leakage prevention wall part in the lateral direction.

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