Panty-type absorbent article, panty-type absorbent article package, absorbent pad, and absorbent pad package

Abstract

The panty-type absorbent article (1) including the absorbent core (31) is characterized in that the absorbent pad (2) provided with the absorbent core (411, 421) includes panty-side deformation guide portions (33, 34) on the inner side compared to the outer edge of the absorbent core (31), which deforms the absorbent core (31) in a shape projecting toward the skin side, so that when the absorbent pad (2) is arranged on the skin side surface and worn, the absorbent core (411, 421) contacts the projecting portion of the absorbent pad (2) deformed in a shape projecting toward the skin side in the crotch portion.

Description

Technical Field

[0001] This invention relates to underwear-shaped absorbent articles, underwear-shaped absorbent article packaging bodies, absorbent pads, and absorbent pad packaging bodies. Background Technology

[0002] In disposable diapers, the use of disposable diapers and inner pads in combination has become widespread in order to, for example, eliminate the need for frequent diaper changes. In Patent Document 1, markings for attachment positioning are provided on both the disposable diaper and the inner pad in order to quickly and reliably attach the inner pad to the appropriate position within the disposable diaper.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2003-93438 Summary of the Invention

[0006] The problem the invention aims to solve

[0007] For absorbent articles, techniques are known for improving leak-proofness and fit by deforming the absorbent body into a predetermined shape, for example, when worn. However, Patent Document 1 only describes providing markings for quickly and reliably attaching pads and disposable diapers to the appropriate positions. Therefore, during use when the inner pad (absorbent pad) is stacked inside the disposable diaper (pant-shaped absorbent article), there is a risk that the disposable diaper and the inner pad will deform differently from each other. Consequently, irregularities are formed at different locations on the disposable diaper and the absorbent pad and overlap each other in the thickness direction, resulting in increased rigidity felt by the wearer and eliminating the ideal deformation to conform to the wearer's body, thus leading to poor fit.

[0008] The present invention has taken into account the above-mentioned problems, and the object of the present invention is to improve the fit to the wearer when the absorbent pad is stacked on the inside of the underwear-shaped absorbent article, while also reducing the rigidity felt by the wearer.

[0009] Solution for solving the problem

[0010] The main invention achieving the above objective is an underwear-shaped absorbent article having a longitudinal and a width direction in its unfolded state. The underwear-shaped absorbent article includes: an absorbent core; and an underwear deformation guide located inside the outer edge of the absorbent core. When worn with an absorbent pad having a longitudinal and a width direction and including the absorbent core disposed on the skin-side surface of the underwear-shaped absorbent article in its unfolded state, the underwear deformation guide deforms the absorbent core of the underwear-shaped absorbent article into a protruding shape protruding toward the skin side so as to contact the protrusion of the absorbent pad, wherein the absorbent core of the absorbent pad is deformed into a protruding shape protruding toward the skin side in the crotch area of ​​the protrusion of the absorbent pad.

[0011] Other features of the invention will become apparent from the following detailed description and accompanying drawings.

[0012] The effects of the invention

[0013] According to the present invention, when an absorbent pad is stacked on the inside of an underwear-shaped absorbent article, the fit to the wearer can be improved while reducing the rigidity felt by the wearer. Attached Figure Description

[0014] [ Figure 1 ] Figure 1 This is a schematic three-dimensional diagram of a disposable underwear-shaped diaper 1.

[0015] [ Figure 2 ] Figure 2 This is a plan view of diaper 1 in its unfolded and elongated state.

[0016] [ Figure 3 ] Figure 3 It is along Figure 2 A schematic cross-sectional view of line CC in the diagram.

[0017] [ Figure 4 ] Figure 4 This is a plan view of the diaper pad 2 in an unfolded and elongated state, viewed from the skin side.

[0018] [ Figure 5 ] Figure 5 A is along Figure 4 A schematic cross-sectional view of line AA in the diagram. Figure 5 B is along Figure 4 A schematic cross-sectional view of line BB in the diagram. Figure 5 C is along Figure 4 A schematic cross-sectional view of line CC in the diagram.

[0019] [ Figure 6 ] Figure 6This is a schematic perspective view showing how pad 2 is attached to the inside of diaper 1.

[0020] [ Figure 7 ] Figure 7 A is a schematic diagram of the packaging body 201 of diaper 1. Figure 7 B is a schematic diagram of the packaging body 202 of pad 2.

[0021] [ Figure 8 ] Figure 8 This is a schematic cross-sectional view showing the wearing state of the diaper 1' and the pad 2' according to the comparative example.

[0022] [ Figure 9 ] Figure 9 A is a schematic cross-sectional view showing the wearing state of the diaper 1 and the pad 2 of this embodiment. Figure 9 B is a schematic diagram showing the protrusions T1 and T2 formed in diaper 1 and pad 2.

[0023] [ Figure 10 ] Figure 10 It is a schematic plan view showing a diaper 1 in an unfolded and extended state and a pad 2 stacked on top of it.

[0024] [ Figure 11 ] Figure 11 It shows that it is in Figure 10 Figures of absorbent cores 31, 411, and 421 in the indicated states.

[0025] [ Figure 12 ] Figure 12 A and Figure 12 B is a schematic diagram of variations of absorbent cores 31, 411 and 421.

[0026] [ Figure 13 ] Figure 13 A to Figure 13 C is a schematic diagram of the test method for specifying the deformation direction.

[0027] [ Figure 14 ] Figure 14 A and Figure 14 B is a schematic diagram of the test method for specifying the deformation direction.

[0028] [ Figure 15 ] Figure 15 A to Figure 15 C is a graph showing the test results for the specified deformation direction.

[0029] [ Figure 16 ] Figure 16 The test results regarding stiffness during wear are shown. Detailed Implementation

[0030] Based on the description in this specification and the accompanying drawings, at least the following will become apparent.

[0031] Aspect 1 is an underwear-shaped absorbent article having a longitudinal and a width direction in an unfolded state. The underwear-shaped absorbent article includes: an absorbent core; and an underwear deformation guide located inside the outer edge of the absorbent core. When worn with an absorbent pad having a longitudinal and a width direction and including the absorbent core disposed on the skin-side surface of the underwear-shaped absorbent article in the unfolded state, the underwear deformation guide deforms the absorbent core of the underwear-shaped absorbent article into a protruding shape protruding toward the skin side so as to contact the protrusion of the absorbent pad, wherein the absorbent core of the absorbent pad is deformed into a protruding shape protruding toward the skin side in the crotch area of ​​the protrusion of the absorbent pad.

[0032] According to aspect 1, at least a portion of the protrusion of the panty-shaped absorbent article adheres to the inside of the protrusion of the absorbent pad, thus the protrusion of the absorbent pad and the protrusion of the panty-shaped absorbent article help to deform against each other and form a larger and more stable protrusion. Therefore, the fit to the wearer's crotch area is improved. Furthermore, due to the formation of the protrusion, the panty-shaped absorbent article and the absorbent pad fold in the width direction, reducing their width and thus alleviating the feeling of rigidity.

[0033] Aspect 2 is an underwear-shaped absorbent article having a longitudinal direction, a width direction, and a thickness direction in an unfolded state. The underwear-shaped absorbent article includes: an absorbent core; and an underwear deformation guide located inside the outer edge of the absorbent core. When worn with an absorbent pad having a longitudinal direction, a width direction, and a thickness direction in an unfolded state and including the absorbent core disposed on the skin-side surface of the underwear-shaped absorbent article, the underwear deformation guide deforms the absorbent core of the underwear-shaped absorbent article such that, in a deformation-direction specification test for specifying the deformation direction, the deformation direction of the underwear-shaped absorbent article in the thickness direction matches the deformation direction of the absorbent pad in the thickness direction of the absorbent pad with a probability of 75% or greater.

[0034] According to aspect 2, the likelihood that the panty-shaped absorbent fabric and absorbent pad will hinder each other's deformation is lower than that of the panty-shaped absorbent fabric in the deformation direction specification test, where the probability that the deformation direction is the same as that of the absorbent pad is less than 75%. This increases the likelihood that protrusions of similar shape will form in the same location in the panty-shaped absorbent fabric and absorbent pad, and improves the fit to the wearer's crotch area. Furthermore, due to the formation of the protrusions, the panty-shaped absorbent fabric and absorbent pad fold in the width direction, reducing their width and thus alleviating the feeling of rigidity.

[0035] Aspect 3 is an underwear-shaped absorbent article having a longitudinal and a width direction in an unfolded state. The underwear-shaped absorbent article includes: an absorbent core; an absorbent pad that can be placed on the skin-side surface of the underwear-shaped absorbent article; the absorbent pad having a longitudinal and a width direction in an unfolded state; the absorbent pad including the absorbent core; the absorbent pad including a pad deformation guide in a predetermined area of ​​six equally divided regions in the longitudinal direction in an unfolded and extended state; the underwear-shaped absorbent article also includes at least a portion of the underwear deformation guide in the following region: when the underwear-shaped absorbent article and the absorbent pad are in an unfolded and extended state and configured such that the centers of the underwear-shaped absorbent article and the absorbent pad are aligned in the longitudinal and width directions, the region of the underwear-shaped absorbent article overlaps with the predetermined region of the absorbent pad in a plan view; the underwear deformation guide deforms the absorbent core of the underwear-shaped absorbent article.

[0036] According to aspect 3, when the absorbent pad is stacked on the inside of the panty-shaped absorbent article and worn, the pad deformation guide and the panty deformation guide are easily positioned in the same area. Therefore, in the panty-shaped absorbent article and the absorbent pad, protrusions with desired shapes are easily formed in the same position by corresponding deformation guides, improving the fit to the wearer's crotch. Furthermore, due to the formation of the protrusions, the panty-shaped absorbent article and the absorbent pad fold in the width direction, reducing their width and thus alleviating the feeling of rigidity.

[0037] Aspect 4 is an underwear-shaped absorbent article according to aspect 3, wherein, when the underwear-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and are configured such that the centers of the underwear-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, the underwear deformation guide has an area overlapping with the pad deformation guide in a plan view.

[0038] According to aspect 4, when the absorbent pad is stacked on the inside of the panty-shaped absorbent article and is worn, the pad deformation guide and the panty deformation guide are even more easily positioned in the same area.

[0039] Aspect 5 is an underwear-shaped absorbent article according to any one of Aspects 1 to 4, wherein the underwear deformation guide includes two pairs of deformation guide regions spaced apart in the longitudinal direction; each pair of deformation guide regions includes two deformation guide regions inclined such that one side extends outward in the longitudinal direction and the other side extends from a corresponding end in the width direction of the absorbent core of the underwear-shaped absorbent article toward the center.

[0040] According to aspect 5, the deformation guide area serves as the starting point for folding the absorbent core, which easily bulges into a dome shape between a pair of deformation guide areas on one side in the longitudinal direction and a pair of deformation guide areas on the other side in the longitudinal direction, thus improving the fit to the wearer's crotch.

[0041] Aspect 6 is an underwear-shaped absorbent article according to aspect 5, wherein the absorbent pad includes a pad deformation guide configured to deform the absorbent core of the absorbent pad, the pad deformation guide including two pairs of deformation guide regions spaced apart in the longitudinal direction, each pair of deformation guide regions including two deformation guide regions inclined to extend outward in the longitudinal direction and extending from a corresponding end of the absorbent core of the absorbent pad toward the center in the width direction, and when the underwear-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and configured such that the centers of the underwear-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, on each side of the longitudinal direction, the inner end of the top of the pair of deformation guide regions of the underwear deformation guide is positioned relative to the longitudinal direction in either of the following ways: outside the inner end of the top of the pair of deformation guide regions of the pad deformation guide; and aligned with the inner end of the top of the pair of deformation guide regions of the pad deformation guide.

[0042] According to aspect 6, in underwear-shaped absorbent articles, it is easy to form a dome-shaped protrusion that is elongated in the longitudinal direction. Therefore, the protrusion of the underwear-shaped absorbent article easily pushes the absorbent pad upward, and the protrusion is easily formed in the absorbent pad.

[0043] Aspect 7 is an underwear-shaped absorbent article according to aspect 5, wherein the absorbent pad includes a pad deformation guide configured to deform the absorbent core of the absorbent pad, the pad deformation guide including two pairs of deformation guide regions spaced apart in the longitudinal direction, each pair of deformation guide regions including two deformation guide regions inclined to extend outward in the longitudinal direction and extending from a corresponding end of the absorbent core of the absorbent pad toward the center in the width direction, and when the underwear-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and configured such that the centers of the underwear-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, on each side of the longitudinal direction, the inner end of the top of a pair of deformation guide regions of the underwear deformation guide is located inside the inner end of the top of a pair of deformation guide regions of the pad deformation guide relative to the longitudinal direction.

[0044] According to aspect 7, in underwear-shaped absorbent articles, it is easy to form a short, dome-shaped protrusion in the longitudinal direction. Therefore, the protrusion of the underwear-shaped absorbent article can easily fit inside the protrusion of the absorbent pad, and can suppress the positional displacement of the protrusion of the absorbent pad in the longitudinal direction.

[0045] Aspect 8 is an underwear-shaped absorbent article according to any one of Aspects 1 to 7, wherein the underwear deformation guide includes a central deformation guide that extends in the longitudinal direction in the central portion of the underwear-shaped absorbent article relative to the longitudinal direction and the width direction, and the basis weight of the absorbent core of the underwear-shaped absorbent article is lower in the central deformation guide than in the region adjacent to the central deformation guide on the outer side in the width direction.

[0046] According to aspect 8, the absorbent core is folded in the width direction along the central deformation guide, thereby reducing the width of the absorbent core and thus reducing rigidity. Furthermore, the excretory fluid can be rapidly drawn into the absorbent core through the central deformation guide (which is a low-weight section).

[0047] Aspect 9 is an underwear-shaped absorbent article according to any one of aspects 1 to 8, further comprising: an underwear alignment indicator visible from the skin-side surface, wherein the absorbent pad includes a pad alignment indicator visible from the skin-side surface, and when the underwear-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and configured such that the centers of the underwear-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, the underwear alignment indicator has an area overlapping with the pad alignment indicator in a plan view.

[0048] According to aspect 9, when worn, the panty-shaped absorbent material and absorbent pad are easily stacked on top of each other in the appropriate position, that is, for example, protrusions with similar shapes are easily formed in the same position in the panty-shaped absorbent material and absorbent pad, and the fit to the wearer's crotch is improved.

[0049] Aspect 10 is an underwear-shaped absorbent article according to any one of aspects 1 to 9, wherein the underwear-shaped absorbent article further includes a connecting member disposed on a skin-side surface and configured to engage the absorbent pad, and the connecting member is located on the outer side of the underwear deformation guide in the longitudinal direction.

[0050] According to aspect 10, it is possible to prevent the joining components from interfering with the deformation of the absorbent core guided by the underwear deformation guide.

[0051] Aspect 11 is an underwear-shaped absorbent article according to any one of aspects 1 to 10, wherein the absorbent core of the underwear-shaped absorbent article includes a contraction portion located between two ends in the longitudinal direction and having a width in the width direction narrower than the two ends, and the underwear deformation guide has a portion overlapping the contraction portion in the longitudinal direction.

[0052] According to aspect 11, the wearer's leg closing force is easily transmitted at the contraction point, the absorbent core is easily deformed into the desired shape due to the underwear deformation guide, and the fit to the wearer's crotch is improved.

[0053] Aspect 12 is an underwear-shaped absorbent article according to any one of aspects 1 to 11, wherein the absorbent core of the underwear-shaped absorbent article includes an end deformation guide at an end in at least one side of the longitudinal direction relative to the underwear deformation guide, the end deformation guide extending along the longitudinal direction and configured as a deformation starting point.

[0054] According to aspect 12, the absorbent core is easily folded in the width direction starting from the end deformation guide extending in the longitudinal direction, and the absorbent core can easily conform to the curves of the wearer's groin (lower abdomen) and hips. This improves the fit to the wearer.

[0055] Aspect 13 is an underwear-shaped absorbent article according to aspect 12, wherein a pair of said end deformation guides are disposed in corresponding sides in the width direction of said ends of said absorbent core, and the pair of said end deformation guides extend outward from the central side in the longitudinal direction while tilting outward in the width direction.

[0056] According to aspect 13, the absorbent core is easily deformable into a shape similar to that extending from the wearer's crotch to their groin (lower abdomen) and buttocks. Therefore, the absorbent core can easily conform to the curves of the wearer's groin (lower abdomen) and buttocks, thus improving the fit to the wearer.

[0057] Aspect 14 is an underwear-shaped absorbent article according to aspect 12 or aspect 13, wherein the absorbent core of the absorbent pad includes: a pad deformation guide; and an end deformation guide located at an end in at least one side of the pad deformation guide in the longitudinal direction, the end deformation guide extending in the longitudinal direction and configured as a deformation starting point, and when the underwear-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and configured such that the centers of the underwear-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, in a plan view the end deformation guide of the underwear-shaped absorbent article has an area overlapping with the end deformation guide of the absorbent pad.

[0058] According to aspect 14, the absorbent core of the panty-shaped absorbent article and the absorbent core of the absorbent pad are easily folded in a similar manner using the end deformation guide located at the same or nearby position as the folding starting point. Therefore, compared to the case where the absorbent core deforms independently, the absorbent core of the panty-shaped absorbent article and the absorbent core of the absorbent pad are more easily deformed to conform to the shape of the wearer's groin (lower abdomen) and buttocks.

[0059] Aspect 15 is an underwear-shaped absorbent article according to any one of aspects 1 to 14, wherein, in the unfolded and extended state, the length in the width direction of the absorbent core of the underwear-shaped absorbent article at the center in the longitudinal direction of the underwear-shaped absorbent article is less than or equal to the length in the width direction of the absorbent core of the absorbent pad at the center in the longitudinal direction of the absorbent pad in the unfolded and extended state.

[0060] According to aspect 15, a short, dome-shaped protrusion in the width direction is easily formed in an underwear-shaped absorbent article. Therefore, the protrusion of the underwear-shaped absorbent article easily conforms to the inside of the protrusion of the absorbent pad, and can suppress the positional displacement of the protrusion of the absorbent pad in the width direction.

[0061] Aspect 16 is a packaging body for an absorbent underwear-shaped item, comprising: a packaging body that contains an absorbent underwear-shaped item according to any one of aspects 1 to 15, the packaging body comprising: a brand display section that displays a brand name common to the absorbent underwear-shaped item and the absorbent pad; and an identification display section that distinguishes the absorbent underwear-shaped item from the absorbent pad.

[0062] According to aspect 16, the brand display section makes it easier to select and use in sets of panty-shaped absorbent items with panty deformation guides and absorbent pads with pad deformation guides. Therefore, the absorbent core easily deforms into the desired shape due to the deformation guides, improving the fit to the wearer's crotch area and reducing the feeling of rigidity. On the other hand, the label display section prevents errors when purchasing panty-shaped absorbent items and absorbent pads.

[0063] Aspect 17 is an absorbent pad having a longitudinal and a width direction in an unfolded state, the absorbent pad comprising: an absorbent core; and a pad deformation guide located inside the outer edge of the absorbent core of the absorbent pad, wherein when the absorbent pad is worn in a state disposed on the skin-side surface of an underwear-shaped absorbent article, wherein the underwear-shaped absorbent article has a longitudinal and a width direction in an unfolded state and includes an absorbent core, the pad deformation guide deforms the absorbent core of the absorbent pad into a protruding shape protruding toward the skin side so as to contact the protrusion of the underwear-shaped absorbent article, wherein in the protrusion of the underwear-shaped absorbent article, the absorbent core of the underwear-shaped absorbent article is deformed into a protruding shape protruding toward the skin side in the crotch area.

[0064] According to aspect 17, at least a portion of the protrusion of the panty-shaped absorbent article adheres to the inside of the protrusion of the absorbent pad, and thus the protrusion of the absorbent pad and the protrusion of the panty-shaped absorbent article help to deform against each other, forming a larger and more stable protrusion. Therefore, the fit to the wearer's crotch area is improved. Furthermore, due to the formation of the protrusion, the panty-shaped absorbent article and the absorbent pad fold in the width direction, reducing their width and thus alleviating the feeling of rigidity.

[0065] Aspect 18 is an absorbent pad having a longitudinal direction, a width direction, and a thickness direction in an unfolded state, the absorbent pad comprising: an absorbent core; and a pad deformation guide located inside the outer edge of the absorbent core of the absorbent pad, after being worn in a state where the absorbent pad is disposed on the skin-side surface of an underwear-shaped absorbent article, wherein the underwear-shaped absorbent article has a longitudinal direction, a width direction, and a thickness direction in an unfolded state and includes an absorbent core, the pad deformation guide deforms the absorbent core of the absorbent pad such that, in a deformation direction specification test for specifying the deformation direction, the deformation direction of the absorbent pad in the thickness direction matches the deformation direction of the underwear-shaped absorbent article in the thickness direction of the underwear-shaped absorbent article with a probability of 75% or greater.

[0066] According to aspect 18, the likelihood that underwear-shaped absorbent articles and absorbent pads will hinder each other's deformation is lower than that of absorbent pads whose deformation direction is less than 75% similar to that of underwear-shaped absorbent articles in the deformation direction specification test. This increases the likelihood that protrusions of similar shape will form in the same location in underwear-shaped absorbent articles and absorbent pads, and improves the fit to the wearer's crotch area. Furthermore, due to the formation of protrusions, underwear-shaped absorbent articles and absorbent pads fold in the width direction, reducing their width and thus alleviating the feeling of rigidity.

[0067] Aspect 19 is an absorbent pad having a longitudinal and a width direction in an unfolded state, the absorbent pad comprising: an absorbent core, the absorbent pad being placeable on the skin-side surface of an underwear-shaped absorbent article having a longitudinal and a width direction in an unfolded state, the underwear-shaped absorbent article including the absorbent core, the underwear-shaped absorbent article including an underwear deformation guide in a predetermined region of six equally divided regions in the longitudinal direction in an unfolded and extended state, the absorbent pad also including at least a portion of the pad deformation guide in a region where, when the underwear-shaped absorbent article and the absorbent pad are in an unfolded and extended state and configured such that the centers of the underwear-shaped absorbent article and the absorbent pad are aligned in the longitudinal and width directions, the region overlaps with a predetermined region of the underwear-shaped absorbent article in a plan view, the pad deformation guide deforming the absorbent core of the absorbent pad.

[0068] According to aspect 19, when the absorbent pad is stacked on the inside of the panty-shaped absorbent article and worn, the pad deformation guide and the panty deformation guide are easily positioned in the same area. Therefore, in the panty-shaped absorbent article and the absorbent pad, protrusions with desired shapes are easily formed in the same position by corresponding deformation guides, improving the fit to the wearer's crotch. Furthermore, due to the formation of the protrusions, the panty-shaped absorbent article and the absorbent pad are folded in the width direction, reducing their width and thus alleviating the feeling of rigidity.

[0069] Aspect 20 is an absorbent pad according to aspect 19, wherein, when the panty-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and are configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, the pad deformation guide has an area overlapping with the panty deformation guide in a plan view.

[0070] According to aspect 20, when the absorbent pad is stacked on the inside of the panty-shaped absorbent article and is worn, the pad deformation guide and the panty deformation guide are even more easily positioned in the same area.

[0071] Aspect 21 is an absorbent pad according to any one of aspects 17 to 20, wherein the pad deformation guide includes two pairs of deformation guide regions spaced apart in the longitudinal direction, each pair of deformation guide regions including two deformation guide regions inclined to extend outward in the longitudinal direction and extending from a corresponding end in the width direction of the absorbent core of the absorbent pad toward the center.

[0072] According to aspect 21, the deformation guide area serves as the starting point for folding the absorbent core, which easily bulges into a dome shape between a pair of deformation guide areas on one side in the longitudinal direction and a pair of deformation guide areas on the other side in the longitudinal direction, and easily makes close contact with the wearer's crotch, thus improving fit.

[0073] Aspect 22 is an absorbent pad according to aspect 21, wherein the panty-shaped absorbent article includes panty deformation guides configured to deform the absorbent core of the panty-shaped absorbent article, the panty deformation guides including two pairs of deformation guide regions spaced apart in the longitudinal direction, each pair of deformation guide regions including two deformation guide regions inclined to extend outward in the longitudinal direction and extending from a corresponding end in the width direction of the absorbent core of the panty-shaped absorbent article toward the center, and when the panty-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, on each side of the longitudinal direction, the inner ends of the tops of the pair of deformation guide regions of the panty deformation guides are positioned relative to the longitudinal direction in either of the following ways: outside the inner ends of the tops of the pair of deformation guide regions of the pad deformation guides; and aligned with the inner ends of the tops of the pair of deformation guide regions of the pad deformation guides.

[0074] According to aspect 22, in underwear-shaped absorbent articles, it is easy to form a dome-shaped protrusion that is elongated in the longitudinal direction. Therefore, the protrusion of the underwear-shaped absorbent article easily pushes the absorbent pad upward, and the protrusion is easily formed in the absorbent pad.

[0075] Aspect 23 is an absorbent pad according to aspect 21, wherein the panty-shaped absorbent article includes panty deformation guides configured to deform the absorbent core of the panty-shaped absorbent article, the panty deformation guides including two pairs of deformation guide regions spaced apart in the longitudinal direction, each pair of deformation guide regions including two deformation guide regions inclined to extend outward in the longitudinal direction and extending from a corresponding end in the width direction of the absorbent core of the panty-shaped absorbent article toward the center, and when the panty-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, on each side in the longitudinal direction, the inner end of the top of a pair of deformation guide regions of the panty deformation guide is located inside the inner end of the top of a pair of deformation guide regions of the pad deformation guide relative to the longitudinal direction.

[0076] According to aspect 23, in underwear-shaped absorbent articles, it is easy to form a short, dome-shaped protrusion in the longitudinal direction. Therefore, the protrusion of the underwear-shaped absorbent article can easily fit inside the protrusion of the absorbent pad, and can suppress the positional displacement of the protrusion of the absorbent pad in the longitudinal direction.

[0077] Aspect 24 is an absorbent pad according to any one of aspects 17 to 23, wherein the pad deformation guide includes a central deformation guide that extends in the longitudinal direction at the center of the absorbent pad relative to the longitudinal direction and the width direction, and the basis weight of the absorbent core of the absorbent pad is lower in the central deformation guide than in the region adjacent to the central deformation guide on the outer side in the width direction.

[0078] According to aspect 24, the absorbent core is folded in the width direction along the central deformation guide, thereby reducing the width of the absorbent core and thus reducing the rigidity felt by the wearer. In addition, excretory fluid can be quickly absorbed into the absorbent core through the central deformation guide (which is a low-weight section).

[0079] Aspect 25 is an absorbent pad according to any one of Aspects 17 to 24, wherein the panty-shaped absorbent article includes an underwear alignment indicator visible from the skin-side surface, the absorbent pad also includes a pad alignment indicator visible from the skin-side surface, and when the panty-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, the pad alignment indicator has an area overlapping with the panty alignment indicator in a plan view.

[0080] According to aspect 25, when worn, the panty-shaped absorbent articles and absorbent pads are easily stacked on top of each other in the appropriate position, i.e., protrusions with similar shapes are easily formed in the same position in the panty-shaped absorbent articles and absorbent pads, and the fit to the wearer's crotch is improved.

[0081] Aspect 26 is an absorbent pad according to any one of aspects 17 to 25, wherein the absorbent pad further includes an engaging member disposed on a non-skin-side surface and configured to engage the panty-shaped absorbent article, and the engaging member is located on the outer side of the pad deformation guide in the longitudinal direction.

[0082] According to aspect 26, it is possible to prevent the joining member from interfering with the deformation of the absorbent core guided by the pad deformation guide.

[0083] Aspect 27 is an absorbent pad according to any one of aspects 17 to 26, wherein the absorbent core of the absorbent pad includes a contraction portion located between two ends in the longitudinal direction and having a width in the width direction narrower than the two ends, and the pad deformation guide has a portion overlapping the contraction portion in the longitudinal direction.

[0084] According to aspect 27, the force of the wearer's leg closure is easily transmitted at the contraction point, the absorbent core is easily deformed into the desired shape due to the pad deformation guide, and the fit to the wearer's crotch is improved.

[0085] Aspect 28 is an absorbent pad according to any one of aspects 17 to 27, wherein the absorbent core of the absorbent pad includes an end deformation guide at an end on at least one side of the pad deformation guide in the longitudinal direction, the end deformation guide extending in the longitudinal direction and configured as a deformation starting point.

[0086] According to aspect 28, the absorbent core is easily folded in the width direction starting from the end deformation guide extending in the longitudinal direction, and the absorbent core easily conforms to the curves of the wearer's groin (lower abdomen) and hips. This improves the fit to the wearer.

[0087] Aspect 29 is an absorbent pad according to aspect 28, wherein the absorbent core of the panty-shaped absorbent article includes: an underwear deformation guide; and an end deformation guide located at an end in at least one side of the longitudinal direction relative to the underwear deformation guide, the end deformation guide extending in the longitudinal direction and configured as a deformation starting point, and when the panty-shaped absorbent article and the absorbent pad are in an unfolded and elongated state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, in a plan view the end deformation guide of the absorbent pad has an area overlapping with the end deformation guide of the panty-shaped absorbent article.

[0088] According to aspect 29, since the end deformation guides are located in the same or similar positions, the absorbent core of the underwear-shaped absorbent article and the absorbent core of the absorbent pad are easily deformed in a similar manner. Therefore, compared to the case where the absorbent cores deform independently of each other, the absorbent core is more likely to deform into the shape of the wearer's groin (lower abdomen) and buttocks, and can reduce the feeling of rigidity.

[0089] Aspect 30 is an absorbent pad according to any one of aspects 17 to 29, wherein, in the unfolded and extended state, the length in the width direction of the absorbent core of the absorbent pad at the center in the longitudinal direction of the absorbent pad is greater than or equal to the length in the width direction of the absorbent core of the underwear-shaped absorbent article at the center in the longitudinal direction of the underwear-shaped absorbent article in the unfolded and extended state.

[0090] According to aspect 30, a short, dome-shaped protrusion in the width direction is easily formed in the panty-shaped absorbent article. Therefore, the protrusion of the panty-shaped absorbent article easily fits inside the protrusion of the absorbent pad, and can suppress the positional displacement of the protrusion of the absorbent pad in the width direction.

[0091] Aspect 31 is an absorbent pad packaging body comprising: a packaging body that contains an absorbent pad according to any one of aspects 17 to 30, the packaging body comprising: a brand display section that displays a brand name common to the underwear-shaped absorbent article and the absorbent pad; and an identification display section for distinguishing the underwear-shaped absorbent article and the absorbent pad.

[0092] According to aspect 31, the brand display section makes it easier to select and use in sets panty-shaped absorbent items with panty deformation guides and absorbent pads with pad deformation guides. The absorbent core easily deforms into the desired shape due to the deformation guides, improving the fit to the wearer's crotch and reducing the feeling of rigidity. On the other hand, the label display section can prevent errors when purchasing panty-shaped absorbent items and absorbent pads.

[0093] ===Implementation Methods===

[0094] In the following description, as an example of the "pant-shaped absorbent article" according to this embodiment, a pant-shaped disposable diaper for adults will be described. As an example of an absorbent pad according to this embodiment, a diaper pad for adults will be described. The diaper pad is disposed inside the pant-shaped disposable diaper and can be used with the diaper. However, there are no limitations on the above, and it can be, for example, a configuration in which the pant-shaped absorbent article is a panty-shaped sanitary napkin, the absorbent pad is a sanitary napkin, and the sanitary napkin is disposed inside the panty-shaped sanitary napkin for use. The pant-shaped absorbent article and the absorbent pad can also be used for infants.

[0095] ===Basic Structure of Panty-Shaped Disposable Diapers 1===

[0096] Figure 1 This is a schematic three-dimensional view of a disposable underwear-shaped diaper 1 (hereinafter also referred to as "diaper 1"). Figure 2 This is a plan view of diaper 1 in its unfolded and elongated state. Figure 3 It is along Figure 2 A schematic cross-sectional view of line CC in the diagram.

[0097] In its underwear-like configuration, the diaper 1 has mutually orthogonal vertical, width, and front-back directions, and includes a waist opening (BH) and a pair of leg openings (LH). The upper side in the vertical direction corresponds to the waist opening (BH) side, and the lower side corresponds to the crotch side. Furthermore, the front side in the front-back direction corresponds to the wearer's abdomen, and the back side corresponds to the wearer's back. Additionally, in... Figure 2 In the unfolded state shown, the diaper 1 has a longitudinal direction, a width direction, and a thickness direction that are orthogonal to each other. The longitudinal direction in the unfolded state is the same as the vertical direction in the panty-like state. In the thickness direction, the side where the wearer's skin is located corresponds to the skin side, and the opposite side corresponds to the non-skin side.

[0098] The diaper 1 includes an absorbent body 10 and an outer component 20 disposed on the non-skin side of the absorbent body 10. Figure 2The absorbent body 10 and outer member 20, in their unfolded state, are folded at the central position CL in the longitudinal direction. In this folded state, the front and rear portions of the outer member 20, which face each other, join together on both sides in the width direction to form a pair of side joints SS, and the diaper 1 becomes an underwear-shaped diaper. The side joints SS are formed by known joining techniques such as welding or bonding.

[0099] The "unfolded state" of the panty-shaped diaper 1 refers to the state in which the side joint SS is pulled open and the diaper 1 is opened in the longitudinal direction and laid out on the plane. In addition, the stretched state of the diaper 1 refers to the state in which the diaper 1 is stretched to eliminate wrinkles. Specifically, it is the state in which the size of the components constituting the diaper 1 is the same as or close to the size of the components in the single state (i.e., the size in the state in which the elasticity of the elastic member is not manifested).

[0100] The portion of diaper 1 that overlaps with the side joining portion SS on the front side in the longitudinal direction will be referred to as the "front waist portion 1A". The front waist portion 1A is located on the wearer's ventral side. The portion of diaper 1 that overlaps with the side joining portion SS on the rear side in the longitudinal direction will be referred to as the "rear waist portion 1B". The rear waist portion 1B is located on the wearer's back side. The portion of diaper 1 located between the front waist portion 1A and the rear waist portion 1B in the longitudinal direction will be referred to as the "crotch portion 1C". The crotch portion 1C is located between the wearer's legs.

[0101] The absorbent body 10 includes an absorbent body 30, a liquid-permeable front sheet 11 (e.g., a non-woven fabric sheet) disposed on the skin side in the thickness direction of the absorbent body 30, a liquid-impermeable back sheet 12 (e.g., a resin film) disposed on the non-skin side in the thickness direction of the absorbent body 30, and a pair of side sheets 13. However, the construction of the absorbent body 10 is not limited to the above; for example, a second sheet may be provided between the front sheet 11 and the absorbent body 30.

[0102] The absorbent 30 includes an absorbent core 31 and a core-coating sheet 32 ​​covering the absorbent core 31. The absorbent core 31 can be obtained, for example, by mixing a highly absorbent polymer (so-called SAP) with a liquid absorbent fiber such as pulp fiber and molding the mixture into a predetermined shape. The core-coating sheet 32 ​​can be, for example, a liquid-permeable sheet, such as tissue paper or nonwoven fabric. Note that the presence of the core-coating sheet 32 ​​is not mandatory.

[0103] Although not shown in detail, a pair of side panels 13 are folded inward in the left-right direction from both ends of the non-skin-side surface of the absorbent body 10, thereby positioning them at both ends of the skin-side surface of the front panel 11 in the width direction, thus forming a leak-proof wall. A leak-proof wall elastic member 14 (e.g., an elastic thread) that stretches in the longitudinal direction is provided at the folded portion of the side panels 13, causing the leak-proof wall to stand upright towards the wearer's skin. The side panels 13 can be, for example, SMS nonwoven fabric sheets that have already been treated with a waterproof coating.

[0104] like Figure 2 As shown, the planar shape of the outer component 20 is an approximately hourglass shape with a narrow central portion in the longitudinal direction. (As shown...) Figure 3 As shown, the external component 20 has a skin side panel 21, a front non-skin side panel 22, a rear non-skin side panel 23, a buttock covering panel 24, a waist elastic component 25, and a leg elastic component 26.

[0105] The sheets 21-24 constituting the outer garment component 20 can be non-woven fabric sheets that are soft sheet components. The skin side sheet 21 is continuous from the front waist section 1A to the back waist section 1B of the diaper 1. The front non-skin side sheet 22 is closer to the non-skin side than the skin side sheet 21 in the thickness direction and mainly forms the front waist section 1A. The back non-skin side sheet 23 is closer to the non-skin side than the skin side sheet 21 in the thickness direction and mainly forms the back waist section 1B. The buttock covering sheet 24 is closer to the non-skin side than the skin side sheet 21 in the thickness direction and is located below the back non-skin side sheet 23. A wide area of ​​the wearer's buttocks is covered by the buttock covering sheet 24.

[0106] Between the skin side panel 21 and the front non-skin side panel 22, and between the skin side panel 21 and the rear non-skin side panel 23, a plurality of waist elastic members 25 (e.g., elastic threads) that extend in the width direction are arranged side by side in the vertical direction. This allows the front waist portion 1A and the back waist portion 1B of the diaper 1 to conform to the wearer's waist. Furthermore, a leg elastic member 26 extending along the leg opening LH is provided between the skin side panel 21 and the rear non-skin side panel 23, and between the skin side panel 21 and the hip cover 24. This allows the rear portion of the outer garment member 20 to conform to the wearer's buttocks.

[0107] The above-described construction of the outer component 20 is merely an example, and the invention is not limited thereto. For example, similar to the skin side panel 21, the non-skin side panel may also be continuous from the front waist portion 1A to the rear waist portion 1B. Additionally, for example, in the crotch portion 1C, it is acceptable to have a construction where the skin side panel 21 is absent and the non-skin side surface of the absorbent body 10 is exposed.

[0108] ===Basic Structure of Incontinence Pad 2===

[0109] Figure 4This is a plan view of the diaper pad 2 (hereinafter also referred to as "pad 2") in an unfolded and elongated state, viewed from the skin side. Figure 5 A is along Figure 4 A schematic cross-sectional view of line AA in the diagram. Figure 5 B is along Figure 4 A schematic cross-sectional view of line BB in the diagram. Figure 5 C is along Figure 4 A schematic cross-sectional view of line CC in the diagram.

[0110] In its unfolded state, pad 2 has longitudinal, width, and thickness directions that are orthogonal to each other. Pad 2 differs from diaper 1 in that one end in the longitudinal direction is not connected to the other end around the wearer's waist, and pad 2 is positioned against the wearer. The unfolded state of pad 2 refers to the state in which pad 2 is opened along its longitudinal direction and laid flat. Furthermore, the stretched state of pad 2 refers to the state in which pad 2 is stretched to eliminate wrinkles; specifically, it is the state in which the dimensions of the components constituting pad 2 are the same as or close to the dimensions of the components in their individual state (i.e., the dimensions in the state where the elasticity of the elastic member is not manifested).

[0111] The planar shape of the pad 2 in this embodiment is generally rectangular, but not limited to this, and can be, for example, generally hourglass-shaped. Furthermore, the pad 2 of this embodiment has a symmetrical shape and structure in the longitudinal direction, and can be used without distinction between the front and back in the longitudinal direction. However, there is no limitation in this regard; the pad 2 can have an asymmetrical shape or structure in the longitudinal direction, and can define a side that contacts the wearer's front (abdominal) side and a side that contacts the wearer's rear (back) side.

[0112] The pad 2 has an absorbent body 40, a liquid-permeable front sheet 3 (e.g., a non-woven fabric sheet) covering the absorbent body 40 from the skin side in the thickness direction, a liquid-impermeable back sheet 4 (e.g., a resin film) covering the absorbent body 40 from the non-skin side, and a pair of side sheets 5 disposed on both sides in the width direction of the pad 2. Figure 5 As shown in Figure C, the back sheet 4 can extend outward from the non-skin side surface of the absorbent 40 in both the width and longitudinal directions, and wrap around the skin side in the thickness direction to cover the side surface (edge) of the absorbent 40. This prevents excretory fluid from seeping out from the side surface of the absorbent 40.

[0113] The absorber 40 has a two-layer structure in the thickness direction. The layer disposed on the skin side in the thickness direction will be referred to as the first absorber 41, and the layer disposed on the non-skin side in the thickness direction adjacent to the first absorber 41 will be referred to as the second absorber 42. The first absorber 41 has a first absorbent core 411 and a first core-covering sheet 412 covering the first absorbent core 411. The second absorber 42 has a second absorbent core 421 and a second core-covering sheet 422 covering the second absorbent core 421. In the following description, the first absorbent core 411 and the second absorbent core 421 will be collectively referred to as absorbent cores 411 and 421.

[0114] The first absorbent core 411 and the second absorbent core 421 can be obtained, for example, by mixing a highly absorbent polymer (so-called SAP) with a liquid absorbent fiber such as pulp fiber and molding the mixture into a predetermined shape. The first core wrapper 412 and the second core wrapper 422 can be, for example, liquid-permeable sheets, such as tissue paper or nonwoven fabric. Note that the presence of the first core wrapper 412 and the second core wrapper 422 is not mandatory.

[0115] Figure 4 An example is shown where the first absorbent core 411 and the second absorbent core 421 have a generally hourglass shape in a plan view. However, the planar shape of the absorbent cores 411 and 421 is not particularly limited and can be, for example, rectangular. Furthermore, the first absorbent core 411 located on the skin side is slightly larger than the second absorbent core 421 located on the non-skin side, and is also longer in both the longitudinal and width directions.

[0116] A pair of side panels 5 fold back from both ends of the back panel 4 in the width direction toward the skin side in the thickness direction, and are located on both sides of the skin-side surface of the front panel 3 in the width direction. The side panels 5 form a leak-proof wall portion 50 on the skin-side surface of the front panel 3. The leak-proof wall portion 50 includes a leak-proof wall elastic member 51 (e.g., an elastic thread) that expands and contracts in the longitudinal direction, causing the leak-proof wall portion to stand upright toward the wearer's skin. Figure 5 As shown in Figure A, the portion of the side panel 5 that is fixed to the front panel 3 using adhesive HMA serves as the starting point for the upright position of the leak-proof wall portion 50 in the width direction. The side panel 5 can be, for example, an SMS nonwoven fabric sheet that has already been treated with waterproofing.

[0117] Furthermore, on the non-skin-side surface of the pad 2, in the portions of the back panel 4 that are covered by the side panel 5 at each end in the width direction, a non-skin-side stretchable member 52 (e.g., an elastic thread) that stretches in the longitudinal direction is provided. The non-skin-side stretchable member 52 is provided in the central portion in the longitudinal direction of the pad 2, corresponding to a position close to the wearer's legs. The non-skin-side stretchable member 52 forms leg pleats at both ends in the width direction of the pad 2, thus making it easier to fit the wearer's leg circumference.

[0118] Although the basic structure of pad 2 has been described above, the structure of pad 2 is not limited to those described above. For example, the absorbent core of pad 2 can have a single-layer structure.

[0119] ===How to put on diapers 1 and pads 2===

[0120] Figure 6 This is a schematic perspective view showing how pad 2 is attached to the inside of diaper 1. Pad 2 can be positioned on the skin-side surface of the panty-like diaper 1 for use. By folding pad 2 inside diaper 1, only pad 2 needs to be changed, thus extending the lifespan of diaper 1. This reduces the number of times panty-like diaper 1 needs to be changed (which requires the wearer to remove their underwear, etc.). Furthermore, even if excrement overflows from pad 2, the excrement can be captured by diaper 1, thereby preventing leakage to the wearer's underwear, etc.

[0121] The following are conceivable examples of methods for replacing and attaching pad 2 to the inside of panty-shaped diaper 1. First, the wearer is standing or... Figure 6 As shown, with the person seated, pull diaper 1 down to below their knees. When diaper 1 is in the lowered position, separate the used pad 2 attached to the skin side of diaper 1 from diaper 1. Then, attach a pre-prepared new pad 2 to diaper 1, typically at the center position CL1 corresponding to the longitudinal direction (see [link to product details]). Figure 4 The pad 2 is folded at position CL1 with the skin side facing inward. Therefore, when attaching the pad 2 to the diaper 1, first, the pad 2 is placed inside the diaper 1 with the folded position CL1 facing forward, and the folded position CL1 is gently pressed against the skin side surface of the diaper 1. Next, the folded pad 2 is opened to both sides in the longitudinal direction, thereby unfolding the pad 2 into an approximately flat surface and securing the pad 2 to the skin side surface of the diaper 1. Note that this securing is achieved, for example, by attaching a pre-set engagement member 6 (on the non-skin side surface of the pad 2)... Figure 4 This is achieved by combining the diaper 1 with the skin-side surface (front panel 11). Then, the diaper 1 is pulled up to the wearer's waist, thus completing the wearing of the diaper 1 and pad 2.

[0122] ===Use Diaper 1 and Pad 2 in combination===

[0123] Figure 7 A is a schematic diagram of the packaging body 201 of diaper 1. Figure 7 B is a schematic diagram of the packaging body 202 of pad 2. Figure 8 This is a schematic cross-sectional view showing the wearing state of the diaper 1' and the pad 2' according to the comparative example. Figure 9A is a schematic cross-sectional view showing the wearing state of the diaper 1 and the pad 2 of this embodiment. Figure 9 B is a schematic diagram showing the protrusions T1 and T2 formed in diaper 1 and pad 2. Figure 10 It is a schematic plan view showing a diaper 1 in an unfolded and extended state and a pad 2 stacked on top of it. Figure 11 It shows that it is in Figure 10 Figures of absorbent cores 31, 411, and 421 in the indicated states. Figure 12 A and Figure 12 B is a schematic diagram of variations of absorbent cores 31, 411 and 421.

[0124] The diaper 1 of this embodiment includes "underwear deformation guides 33 and 34" in the crotch area 1C. When the diaper 1 is worn with an absorbent pad (such as pad 2 in this embodiment) disposed on its skin-side surface, the underwear deformation guides 33 and 34 deform the absorbent core 31 of the diaper 1 into a shape protruding towards the skin side, so as to contact the protrusion T2 of the pad 2, in which the absorbent cores 411 and 421 have been deformed into a shape protruding towards the skin side. Figure 9 As shown in Figure A.

[0125] The underwear deformation guides 33 and 34 are located on the inner side of the outer edge of the absorbent core 31, and as... Figure 2 As shown, the underwear deformation guides 33 and 34 include two pairs of underwear deformation guide areas 33 disposed on opposite sides of the longitudinal center line CL of the diaper 1, and a central deformation guide 34 extending in the longitudinal direction (described in detail later).

[0126] Similarly, the pad 2 of this embodiment includes "pad deformation guides 43 and 44" in the crotch portion 2C of the pad 2. When the pad 2 is worn in a state where it is disposed on the skin-side surface of an underwear-shaped absorbent article such as the diaper 1 of this embodiment, the pad deformation guides 43 and 44 deform the absorbent cores 411 and 421 into a shape protruding toward the skin side, so as to contact the protrusion T1 of the diaper 1 in which the absorbent core 31 is deformed into a shape protruding toward the skin side, such as... Figure 9 As shown in Figure A.

[0127] The pad deformation guides 43 and 44 are located inside the outer edges of the absorbent cores 411 and 421, and as... Figure 4 As shown, the pad deformation guides 43 and 44 include two pairs of pad deformation guide regions 43 disposed on opposite sides of the longitudinal direction centerline CL of the pad 2, and a central deformation guide 44 extending in the longitudinal direction (described in detail later). At the central portion in the longitudinal direction of the absorbent cores 411 and 421, as shown... Figure 4When the absorbent core shrinks as shown, the crotch portion 2C of the pad 2 is defined as the portion that overlaps with the shrinkage portion 40c in the longitudinal direction. When the absorbent core does not shrink, and the pad 2 is divided into four regions in the longitudinal direction, the crotch portion 2C is defined as the two central regions (half regions).

[0128] Here, in Figure 8 In the comparative example shown, if the diaper 1' and pad 2' deform independently, and if the protrusion of diaper 1' does not fit inside the protrusion of pad 2', and the protrusions of diaper 1' and pad 2' do not contact each other, unevenness will form at different locations in diaper 1' and pad 2'. In this case, the deformation of diaper 1' and pad 2' tends to cancel each other out, resulting in the formation of multiple small protrusions. This may increase the width of diaper 1' and pad 2 when worn, or may cause spaces to form between the unevenness of diaper 1' and pad 2'. Therefore, the wearer of diaper 1' and pad 2 is prone to feeling rigidity. Furthermore, diaper 1' and pad 2' do not deform to fit the wearer's crotch area, resulting in poor fit, which may lead to leakage of excrement and poor comfort.

[0129] In contrast, in the diaper 1 and pad 2 of this embodiment, due to the underwear deformation guides 33 and 34 and the pad deformation guides 43 and 44, at least a portion of the skin-side surface of the protrusion T1 formed in the diaper 1 comes into contact with a portion of the non-skin-side surface of the protrusion T2 formed in the pad 2. In other words, the diaper 1 and pad 2 are deformed such that at least a portion of the protrusion T1 of the diaper 1 enters the inside of the protrusion T2 of the pad 2.

[0130] Thus, protrusions T1 and T2 with similar shapes (protruding towards the skin) are formed at the same location in the diaper 1 and pad 2 worn in an overlapping manner. This means that the protrusions T1 of diaper 1 and T2 of pad 2 can help deform each other, making it easier to form larger protrusions T1 and T2 with the desired shape. Therefore, as Figure 9 As shown in Figure A, diaper 1 and pad 2 can be easily deformed to conform to the shape of the wearer's crotch, thus improving the fit. Furthermore, as... Figure 9 As shown in Figure A, diaper 1 and pad 2 are folded in the width direction at the center, thereby reducing the width of diaper 1 and pad 2 and thus reducing the rigidity felt by the wearer (the feeling of pressure on the thighs).

[0131] Furthermore, since the protrusions T1 and T2, which have similar shapes, are formed to contact each other, the protrusion T1 of diaper 1 and the protrusion T2 of pad 2 can maintain their respective protruding shapes. Therefore, even with the wearer's movement, the protrusions T1 and T2 are unlikely to flatten and are easy to form stable protrusions T1 and T2. In other words, diaper 1 and pad 2 maintain a good fit around the crotch even when worn.

[0132] Furthermore, diaper 1 and pad 2 are folded in the width direction, reducing their width and thus decreasing the amount of contact between diaper 1 and pad 2 and the wearer's thighs. Therefore, diaper 1 and pad 2 are easier to pull up when put on, improving ease of dressing. Additionally, when wearing diaper 1 and pad 2, the wearer can easily close their legs, making it easier for them to walk, stand, and perform other movements.

[0133] Note that diaper 1 and pad 2 can undergo deformation such that, when worn, diaper 1 deforms into a shape protruding towards the skin, and pad 2 follows this movement, also deforming into a shape protruding towards the skin. In other words, the protrusion T1 of diaper 1 can push pad 2 upwards towards the skin, forming the protrusion T2 of pad 2. Alternatively, diaper 1 and pad 2 can undergo deformation such that pad 2 first deforms into a protruding shape due to force from the wearer's thigh, and diaper 1 follows this movement, also deforming into a protruding shape. Alternatively, diaper 1 and pad 2 can deform into protruding shapes simultaneously. The movement of diaper 1 and pad 2 during wear is not particularly restricted, as long as the protrusion T1 (skin-side surface) of diaper 1 and the protrusion T2 (non-skin-side surface) of pad 2 are in contact when diaper 1 and pad 2 are worn folded together.

[0134] Furthermore, whether the protrusion T1 of diaper 1 and the protrusion T2 of pad 2 are in contact with each other can be confirmed, for example, by having the test subject actually fold the pad 2 inside the diaper 1 in a deformation direction specification test (described in detail later).

[0135] Furthermore, since the diaper 1 of this embodiment includes underwear deformation guides 33 and 34, when the absorbent pad (such as the pad 2 of this embodiment) is placed on the skin-side surface of the diaper 1 and a deformation direction determination test (described in detail later) is performed to determine the deformation direction, the following occurs: Specifically, due to the underwear deformation guides 33 and 34, the absorbent core 31 of the diaper 1 deforms, and there is a 75% or greater probability that the deformation direction of the diaper 1 in the thickness direction is the same as the deformation direction of the pad 2 in the thickness direction.

[0136] Similarly, since the pad 2 of this embodiment includes pad deformation guides 43 and 44, when the pad 2 is worn on the skin-side surface of an underwear-shaped absorbent article such as the diaper 1 of this embodiment, and a deformation direction determination test is performed to determine the deformation direction, the following occurs: Specifically, due to the pad deformation guides 43 and 44, the absorbent cores 411 and 421 of the pad 2 deform, making it 75% or more likely that the deformation direction of the pad 2 in the thickness direction is the same as that of the diaper 1 in the thickness direction.

[0137] For diaper 1, whether the deformation direction in the thickness direction is the same when diaper 1 and pad 2 are worn together is determined based on the number of protrusions (e.g., protrusions T1 protruding towards the skin) formed in diaper 1 after pad 2 is stacked on top of diaper 1 and used. In the case of pad 2, it is determined based on the number of protrusions (e.g., protrusions T2 protruding towards the skin) formed in pad 2 after it is placed on the skin-side surface of diaper 1. If only one protrusion exists, it means that diaper 1 and pad 2 are not in the same direction. Figure 8 The deformations that cancel each other out, as shown, result in the formation of multiple small bumps and depressions, rather than... Figure 9 As shown in Figure A, diaper 1 and pad 2 have protrusions formed at the same location and in the same deformation direction. Therefore, when the number of protrusions formed in diaper 1 or pad 2 is one, it is assumed that diaper 1 and pad 2 have the same deformation direction in the thickness direction.

[0138] In the deformation direction specification test according to the present invention, the protrusion formed in the diaper 1 or pad 2 is a protrusion whose height is 50% or greater than the height h1 or h2 of the highest protrusion formed in the diaper 1 or pad 2 (see description below). Figure 14 (A and 14B). In other words, when the number of protrusions formed other than the highest protrusion is zero, or when only protrusions with a height less than 50% of the highest protrusion are formed other than the highest protrusion, it is assumed that the diaper 1 and the pad 2 have the same deformation direction in the thickness direction.

[0139] As described above, compared to diapers where the probability of the deformation direction being the same as that of pad 2 in the deformation direction specification test is less than 75%, in the diaper 1 of this embodiment, the diaper 1 and pad 2 are less likely to hinder each other's deformation, and there is a higher probability that protrusions with similar shapes (with the same deformation direction) will be formed at the same positions in the diaper 1 and pad 2. Therefore, in the case of diaper 1 and pad 2 stacked on top of it, it is easy to form protrusions T1 and T2 with desired shapes (following the shape of the wearer's crotch) through the underwear deformation guides 33 and 34, and the fit to the wearer is improved. Furthermore, the formation of a relatively large protrusion T1 and a relatively large protrusion T2 in diaper 1 and pad 2 reduces the width of diaper 1 and pad 2, thereby reducing the feeling of rigidity.

[0140] Similarly, compared to pads where the probability of the deformation direction being the same as that of diaper 1 in the deformation direction specification test is less than 75%, in the pad 2 of this embodiment, the probability that diaper 1 and pad 2 will hinder each other's deformation is lower, and the probability of forming protrusions with similar shapes (with the same deformation direction) at the same location in diaper 1 and pad 2 is higher. Therefore, when pad 2 and diaper 1 are also used together, it is easy to form protrusions T1 and T2 with the desired shape (following the shape of the wearer's crotch) through pad deformation guides 43 and 44, and the fit to the wearer is improved. Furthermore, forming a relatively large protrusion T1 and a relatively large protrusion T2 in pad 2 and diaper 1 reduces the width of diaper 1 and pad 2, thereby reducing the feeling of rigidity.

[0141] Furthermore, in the diaper 1 of this embodiment, an absorbent pad can be placed on its skin-side surface. This absorbent pad, for example, like the pad 2 of this embodiment, is divided into six equal areas in the longitudinal direction when unfolded and stretched. Figure 10 Regions I3 and I4 in I1 to I6 include pad deformation guides 43 and 44. Figure 10 As shown, the diaper 1 includes at least a portion of underwear deformation guides 33 and 34 in the following regions: said regions overlap with regions I3 and I4 of the pad 2 (absorbent pad) in a plan view when the pad 2 and the diaper 1 are in an unfolded and elongated state and are configured such that the centers of the pad 2 and the diaper 1 are aligned in the longitudinal and width directions.

[0142] As mentioned above Figure 6 As explained, pad 2 is inserted into diaper 1 such that the lower end of pad 2, folded in the longitudinal direction (center CL1 in the longitudinal direction), contacts the front and back centers (CL in the longitudinal direction) of diaper 1. Therefore, as... Figure 10As shown, pad 2 can be easily positioned within diaper 1, ensuring that the centers of diaper 1 and pad 2 are aligned in both the longitudinal and width directions. In this positioned state ( Figure 10 When the wearer places the pad 2 inside the diaper 1, the pad deformation guides 43 and 44 and the underwear deformation guides 33 and 34 are easily positioned in the same area.

[0143] More preferably, when the pad 2 and diaper 1 are in an unfolded and extended state and configured such that the centers of the pad 2 and diaper 1 are aligned in the longitudinal and width directions ( Figure 10 When the underwear deformation guides 33 and 34 are placed inside the diaper 1, they have areas that overlap with the pad deformation guides 43 and 44 in the plan view. According to this configuration, when the wearer places the pad 2 inside the diaper 1, the pad deformation guides 43 and 44 and the underwear deformation guides 33 and 34 are more easily positioned in the same area.

[0144] exist Figure 10 In the diaper 1 shown, the central deformation guide 34 of the underwear deformation guide has an area that overlaps with the central deformation guide 44 of the pad deformation guide. Furthermore, the underwear deformation guide area 33 on the front side in the longitudinal direction has an area that overlaps with the pad deformation guide area 43 on the front side in the longitudinal direction.

[0145] Similarly, the pad 2 of this embodiment can be disposed on the skin-side surface of the diaper 1, which, for example, is like the diaper 1 of this embodiment, divided into six equal areas in the longitudinal direction when unfolded and stretched (e.g., Figure 10 Regions O3 and O4 in O1 to O6 of the diaper 1 include underwear deformation guides 33 and 34. Pad 2 includes at least a portion of pad deformation guides 43 and 44 in the following regions: said regions are in the unfolded and elongated state of diaper 1 and pad 2 and are configured such that the centers of diaper 1 and pad 2 are aligned in the longitudinal and width directions. Figure 10 When the diaper is in plan view, regions O3 and O4 overlap with the diaper 1 (underwear-shaped absorbent item).

[0146] According to this construction, when the wearer places the pad 2 inside the diaper 1, the pad deformation guides 43 and 44 and the underwear deformation guides 33 and 34 are more easily positioned in the same area.

[0147] More preferably, when the diaper 1 and pad 2 are in an unfolded and extended state and configured such that the centers of the diaper 1 and pad 2 are aligned in the longitudinal and width directions ( Figure 10 When the pad deformation guides 43 and 44 are in plan view, they have areas that overlap with the underwear deformation guides 33 and 34. As described above, in Figure 10 In the middle, the central deformation guides 34 and 44 overlap each other, and the deformation guides 33 and 43 on the front side in the longitudinal direction overlap each other.

[0148] According to this construction, when the wearer places the pad 2 on the inside of the diaper 1, the pad deformation guides 43 and 44 and the underwear deformation guides 33 and 34 are more easily positioned in the same area.

[0149] As described above, when diaper 1 and pad 2 are stacked on top of each other, the pad deformation guides 43 and 44 are positioned in the same area as the underwear deformation guides 33 and 34, so diaper 1 and pad 2 are unlikely to obstruct each other's deformation. Therefore, protrusions T1 and T2, having the desired shape (a shape that fits the wearer's crotch) due to the deformation guides (33, 34, 43 and 44), are easily formed in the same position in diaper 1 and pad 2. This allows for improved fit to the wearer. Furthermore, since protrusions T1 and T2 are formed with such... Figure 9 The desired shape shown in A reduces the width of diaper 1 and pad 2, thus alleviating the feeling of rigidity.

[0150] Although the features of the combined use of diaper 1 and pad 2 have been described above, diaper 1 does not need to achieve all three features mentioned above (including panty deformation guides 33 and 34 that deform the absorbent core 31 to contact the protrusion of pad 2, panty deformation guides 33 and 34 that deform the absorbent core 31 such that the deformation direction is 75% or greater than the deformation direction of pad 2, and panty deformation guides 33 and 34 included in the area where pad deformation guides 43 and 44 are located), it is sufficient for diaper 1 to achieve at least one of them.

[0151] The pad 2 does not need to achieve all three features mentioned above (including pad deformation guides 43 and 44 that deform the absorbent cores 411 and 421 to contact the protrusions of the diaper 1, pad deformation guides 43 and 44 that deform the absorbent cores 411 and 421 such that the deformation direction is 75% or greater than the deformation direction of the diaper 1, and pad deformation guides 43 and 44 are included in the area where the underwear deformation guides 33 and 34 are located), it is sufficient for the pad 2 to achieve at least one of them.

[0152] Furthermore, the diaper 1 of this embodiment can be used with an absorbent pad that is different from the pad 2 of this embodiment and is arranged on the inside. For example, the diaper 1 can be used in combination with an absorbent pad that does not include a deformation guide portion that deforms the absorbent core in the crotch area, or an absorbent pad that includes a deformation guide portion having a different shape or structure than the pad deformation guide portions 43 and 44 of this embodiment. In this case, the diaper 1 also includes the aforementioned underwear deformation guide portions 33 and 34, so protrusions T1 and T2 with similar shapes (conforming to the shape of the wearer's crotch area) can easily be formed in the same position in the diaper 1 and the absorbent pad, thereby reducing the feeling of rigidity and improving the fit to the wearer.

[0153] Furthermore, the pad 2 of this embodiment can be placed inside the panty-shaped absorbent article other than the diaper 1 of this embodiment. For example, the pad 2 can be used in combination with a panty-shaped absorbent article that does not include a deformation guide portion that deforms the absorbent core in the crotch area, or a panty-shaped absorbent article that includes a deformation guide portion having a different shape or structure from the panty deformation guide portions 33 and 34 of this embodiment. In this case, the pad 2 also includes the aforementioned pad deformation guide portions 43 and 44, so protrusions T1 and T2 with similar shapes (conforming to the wearer's desired crotch shape) can easily be formed at the same location in the panty-shaped absorbent article and the pad 2, thereby reducing the feeling of rigidity and improving the fit to the wearer.

[0154] Note that the diaper 1 and the pad 2 of this embodiment constitute a group of products with the same brand name (a name given to products with the same concept). Therefore, the underwear deformation guides 33 and 34 are similar (largely the same) to the pad deformation guides 43 and 44 in shape, structure, and placement. Therefore, by using the pad 2 of this embodiment, which is stacked on the inside of the diaper 1 of this embodiment, it is easier to achieve the above-mentioned effect (making it easier to form protrusions of similar shapes at the same positions in the diaper 1 and the pad 2).

[0155] Therefore, the following is preferred: In the packaging body 201 for diapers 1, one or more diapers 1 are housed in the packaging body 211, such as... Figure 7 As shown in A. Specifically, preferably, the packaging body 211 has a brand display section 212 that displays the brand name (e.g., "Lifree (registered trademark)") shared by diaper 1 and pad 2, and an identification display section 213 (e.g., product name or display such as "underwear diaper") for distinguishing diaper 1 and pad 2.

[0156] Similarly, such as Figure 7 As shown in B, the following is preferred: In the packaging body 202 for the pad 2, one or more pads 2 are housed in the packaging body 214. Specifically, it is preferred that the packaging body 214 has a brand display section 215 displaying a brand name common to the diaper 1 and the pad 2, and an identification display section 216 for distinguishing the diaper 1 and the pad 2 (e.g., a product name or a display such as "diaper pad").

[0157] As described above, a "packaging body 201 for diapers 1" containing one or more diapers 1 in the packaging body 211 and a "packaging body 202 for pads 2" containing one or more pads 2 in the packaging body 214 constitute a packaging set. After the packaging set is distributed, consumers who intend to use underwear-shaped disposable diapers and absorbent pads together can easily select and use the diapers 1 and pads 2 of this embodiment as a set because the brand display parts 212 and 215 are the same. Therefore, when the diapers 1 and pads 2 of this embodiment are used together, the above-mentioned effects can be easily obtained. On the other hand, the marking display parts 213 and 216 prevent errors when purchasing diapers 1 and pads 2.

[0158] In this embodiment, the packaging assembly includes a packaging body 201 for diapers 1 and a packaging body 202 for pads 2 as an example, wherein the packaging body 211 only contains diapers 1 and does not contain pads 2, and the packaging body 214 only contains pads 2 and does not contain diapers 1.

[0159] However, the present invention is not limited thereto, and the packaging body containing the diaper 1 and the pad 2 of this embodiment in the same packaging body can also be circulated.

[0160] ===Underwear Deformation Guide Parts 33 and 34 and Pad Deformation Guide Parts 43 and 44===

[0161] like Figure 2 As shown, the underwear deformation guide includes two pairs of deformation guide areas 33, which are spaced apart in the longitudinal direction and each includes two deformation guide areas. These two deformation guide areas are inclined such that they extend outward in the longitudinal direction while extending from the corresponding ends of the absorbent core 31 toward the center in the width direction.

[0162] Similarly, such as Figure 4 As shown, the pad deformation guide includes two pairs of deformation guide regions 43, which are spaced apart in the longitudinal direction and each includes two deformation guide regions. These two deformation guide regions are inclined such that they extend outward in the longitudinal direction while extending from the corresponding ends of the absorbent cores 411 and 421 toward the center in the width direction.

[0163] like Figure 3 and Figure 5As shown in Figure B, the deformation guide regions 33 and 43 of this embodiment are constituted by compression grooves formed by compressing (embossing) at least a portion of the absorbent cores 31, 411, and 421 in the thickness direction. Therefore, the deformation guide regions 33 and 43 have higher rigidity than the surrounding regions and become the starting point for deformation (folding) of the absorbent cores 31, 411, and 421. However, the invention is not limited thereto; the basis weight of the absorbent cores 31, 411, and 421 can be set lower than that of the surrounding regions, so that the deformation guide regions have a rigidity difference from the surrounding regions.

[0164] Each pair of deformable guide regions 33 and 43 comprises two deformable guide regions symmetrical with respect to the centerline of the diaper 1 or pad 2 in the width direction. The pair of deformable guide regions 33 and 43 on the front side are symmetrical with respect to the pair of deformable guide regions 33 and 43 on the rear side with respect to the centerline CL or CL1 in the longitudinal direction of the diaper 1 or pad 2. More specifically, the deformable guide regions 33 of the diaper 1 are all straight lines inclined with respect to the width direction, and the deformable guide region 33 on one side of the width direction is continuous with the deformable guide region 33 on the other side of the width direction. On the other hand, the deformable guide regions 43 of the pad 2 each comprise two straight lines with different inclination angles from the end side to the center in the width direction, and the deformable guide region 43 on one side of the width direction is spaced apart from the deformable guide region 43 on the other side of the width direction. However, Figure 2 and Figure 4 The shapes of the deformation guide regions 33 and 43 shown are merely examples, and the deformation guide regions 33 and 43 are not limited thereto. For example, the deformation guide regions 33 and 43 can be arc-shaped curve regions, etc.

[0165] Thus, as Figure 9 As shown in Figure B, paired deformation guide regions 33 and 43 are provided on one side (front) and the other side (rear) in the longitudinal direction. An approximately rhomboid region surrounded by the deformation guide regions 33 and 43 protrudes towards the skin, forming protrusions T1 and T2. Due to the deformation guide regions 33 and 43, the absorbent cores 31, 411, and 421 deform in a dome-shaped manner, rather than simply folding in the width direction. The dome-shaped protrusions T1 and T2 make close contact with the wearer's body over a wide surface area, conforming to the shape of the wearer's body, thus making it difficult for gaps to form between the protrusions and the body. As a result, leakage is suppressed.

[0166] The paired deformation guide regions 33 and 43 on the front and the paired deformation guide regions 33 and 43 on the rear are respectively arranged on opposite sides of the center lines CL and CL1 in the longitudinal direction of the diaper 1 and the pad 2. Therefore, the dome-shaped protrusions T1 and T2 are easily formed in the areas of the diaper 1 and the pad 2 that come into contact with the wearer's crotch.

[0167] Furthermore, when the wearer's legs are forced to close, forming protrusions T1 and T2, deformation guide areas 33 and 43 serve as folding starting points. Additionally, the leak-proof elastic member 14 of the diaper 1 and the leak-proof elastic member 51 and the non-skin-side stretchable member 52 of the pad 2 also apply longitudinal contraction forces to the deformation guide areas 33 and 43, and the absorbent cores 31, 411, and 421 deform with the deformation guide areas 33 and 43 as folding starting points, thus facilitating the formation of protrusions T1 and T2.

[0168] Moreover, such as Figure 4 As shown, the pad 2 has a non-skin-side stretchable member 52, which can extend and retract in the longitudinal direction from both sides in the width direction, and preferably, at least a portion of the non-skin-side stretchable member 52 does not overlap with the absorbent cores 411 and 421 of the pad 2 in the unfolded and extended state. Figure 4 In the pad 2, two non-skin-side stretchable members 52 are arranged side by side in each width direction, and the outer non-skin-side stretchable member 52 does not overlap with the absorbent cores 411 and 421. Therefore, the situation where the contraction of the non-skin-side stretchable member 52 is hindered by the highly rigid absorbent cores 411 and 421 can be suppressed.

[0169] Furthermore, preferably, such as Figure 10 and Figure 11 As shown, when diaper 1 and pad 2 are in an unfolded and extended state and configured such that the centers of diaper 1 and pad 2 are aligned in the longitudinal and width directions, in the plan view, at least a portion of the non-skin side stretchable member 52 of pad 2 ( Figure 4 The outer, non-skin-side stretchable member 52 not only does not overlap with the pad 2, but also does not overlap with the absorbent core 31 of the diaper 1. According to this configuration, the contraction of the non-skin-side stretchable member 52 can be prevented from being hindered by the highly rigid absorbent core 31 of the diaper 1 supported from below the pad 2. Thus, by ensuring the contraction of the non-skin-side stretchable member 52, the pad 2 more easily conforms to the wearer's leg circumference, and can also be easily deformed with the deformation guide area 43 of the pad 2 as the folding starting point, making it easier to form the dome-shaped protrusion T2.

[0170] Furthermore, similar to pad 2, an appearance piece 7 can be provided between a pair of deformation guide areas 43 on the front side and a pair of deformation guide areas 43 on the rear side. This appearance piece 7 has an appearance (e.g., a grid pattern) that can be seen from the skin side of pad 2. According to this construction, the sections corresponding to the dome-shaped protrusions T1 and T2 are more prominent, and can give the user the impression of good fit and improved leak protection.

[0171] like Figure 2As shown, the underwear deformation guide includes a central deformation guide 34 extending longitudinally in the central portion of the diaper 1 in both the longitudinal and width directions. The basis weight (g / m³) of the absorbent core 31... 2 The central deformation guide 34 is lower than the region adjacent to the central deformation guide on the outer side in the width direction.

[0172] Similarly, such as Figure 4 As shown, the pad deformation guide includes a central deformation guide 44 extending longitudinally in the central portion of the pad 2 in both the longitudinal and width directions. The basis weight of the absorbent cores 411 and 421 is lower in the central deformation guide 44 than in the region adjacent to the central deformation guide in the width direction.

[0173] In this embodiment, the central deformation guides 34 and 44 are slits (regions with zero basis weight) penetrating the absorbent cores 31, 411, and 421 along the thickness direction, but are not limited to this, and may include a portion of the absorbent cores 31, 411, and 421. Furthermore, the central deformation guide 34 of the diaper 1 has a rectangular shape that is elongated in the longitudinal direction. Since the absorbent cores 411 and 421 of the pad 2 form a two-layer structure, the first absorbent core 411 and the second absorbent core 421 respectively include central deformation guides 441 and 442. The skin-side central deformation guide 441 has a generally hourglass shape, having an elliptical shape extending in the longitudinal direction and a central portion that narrows in the longitudinal direction. The non-skin-side central deformation guide 442 has an elliptical shape extending in the longitudinal direction. However, Figure 2 and Figure 4 The shapes of the central deformable guides 34 and 44 shown are merely examples, and the invention is not limited to these.

[0174] When force is applied to close the wearer's legs, the central deformation guides 34 and 44 serve as folding starting points, and the central portions of the absorbent cores 31, 411, and 421 fold in the width direction, forming... Figure 9 Protrusions T1 and T2 are shown in Figure A. Therefore, the crotch areas of diaper 1 and pad 2 can easily conform to the wearer's crotch. Furthermore, the width of diaper 1 and pad 2 is shortened, thus reducing the feeling of rigidity.

[0175] Furthermore, the central deformable guides 34 and 44 are composed of low-weight sections, so excreted urine can be quickly drawn into and diffused within the absorbent cores 31, 411, and 421. This reduces the accumulation of liquid on the surface of the diaper 1 or pad 2, thereby suppressing leakage. However, the invention is not limited to this, and the central deformable guides 34 and 44 can be compression grooves formed by embossing or the like.

[0176] Furthermore, the central deformation guides 34 and 44 are located between the pair of front deformation guide regions 33 and 43 and the pair of rear deformation guide regions 33 and 43. Therefore, in the dome-shaped protrusions formed by the deformation guide regions 33 and 43, the portions corresponding to the peaks of protrusions T1 and T2 are formed by the central deformation guides 34 and 44. This promotes the bulging of protrusions T1 and T2.

[0177] Furthermore, in the case of a two-layer structure similar to the absorbent core 40 of the pad 2, in the crotch portion 2C of the pad 2, preferably, the width of the second absorbent core 421 on the non-skin side is smaller than the width of the first absorbent core 411 on the skin side. According to this configuration, the absorbent cores 31, 411, and 421 can be easily folded in the width direction using the central deformation guides 34 and 44 as folding starting points.

[0178] While the above descriptions of the underwear deformation guides 33 and 34 and the pad deformation guides 43 and 44 are merely examples, there are no particular limitations on the underwear deformation guides and pad deformation guides, as long as they facilitate the protruding deformation of the absorbent cores 31, 411, and 421 toward the skin. Furthermore, the diaper 1 or pad 2 may be provided with only one pair of deformation guide areas 33 and 43 or either the central deformation guides 34 and 44, or the pair of deformation guide areas 33 and 43 may be provided only on one side in the longitudinal direction.

[0179] Moreover, such as Figure 12 As shown in the variation of A, preferably, when the diaper 1 and the pad 2 are in an unfolded and elongated state and configured such that the centers of the diaper 1 and the pad 2 are aligned in the longitudinal and width directions, on each side in the longitudinal direction, the inner end P2 of the top of a pair of deformation guide regions 33 of the diaper 1 is located outside the inner end P1 of the top of a pair of deformation guide regions 43 of the pad 2 in the longitudinal direction, or the inner end P2 associated with the diaper 1 and the inner end P1 associated with the pad 2 are aligned in the longitudinal direction (not shown).

[0180] In this configuration, the deformation guide area 33 of the diaper 1 is readily located outside the deformation guide area 43 of the pad 2 in the longitudinal direction, and a larger dome-shaped protrusion T1 in the longitudinal direction is readily formed in the diaper 1. Therefore, the pad 2 is pushed upward by the protrusion T1 of the diaper 1, and the protrusion T2 of the pad 2 is readily formed.

[0181] Furthermore, contrary to the above, such as Figure 12 As shown in the variant example in B, when diaper 1 and pad 2 are in an unfolded and extended state and are configured such that the centers of diaper 1 and pad 2 are aligned in the longitudinal and width directions, the inner end P2 of the top of a pair of deformation guide areas 33 of diaper 1 can be located inside the inner end P1 of the top of a pair of deformation guide areas 43 of pad 2 in the longitudinal direction.

[0182] In this configuration, the deformation guiding area 33 of the diaper 1 is readily located inside the deformation guiding area 43 of the pad 2 in the longitudinal direction, and a large dome-shaped protrusion T2 in the longitudinal direction is readily formed in the pad 2. Therefore, the protrusion T1 of the diaper 1 can easily fit inside the protrusion T2 of the pad 2, the protrusion T1 of the diaper 1 stably supports the protrusion T2 of the pad 2 from below, and can suppress displacement of the protrusion T2 of the pad 2 in the longitudinal direction.

[0183] Note that when the deformation guide area on one side of the width direction is spaced apart from the deformation guide area on the other side of the width direction, it is related to the pair of deformation guide areas 43 of pad 2. Figure 4 Similarly, the inner ends of the tops of a pair of deformable guide regions 33 and 43 are determined as follows. Specifically, for each of the pair of deformable guide regions 33 and 43 in the longitudinal direction, a virtual line L is drawn to connect the outer end pa in the width direction and the inner end pb in the width direction. The intersection of the virtual lines L is defined as the inner end of the top of the pair of deformable guide regions 33 or 43.

[0184] Furthermore, preferably, the diaper 1 and the pad 2 (absorbent pad) worn with it have the following relationship. Specifically, preferably, as follows: Figure 11 As shown, the length W1 of the absorbent core 31 of diaper 1 in the longitudinal direction at the center CL of diaper 1 in the width direction when it is unfolded and stretched is less than or equal to the length W2 of the absorbent cores 411 and 421 of pad 2 in the longitudinal direction at the center CL1 of pad 2 in the width direction when they are unfolded and stretched (W1≤W2).

[0185] Similarly, preferably, the pad 2 and the diaper 1 (underwear-shaped absorbent article) worn with it have the following relationship. Specifically, preferably, the length W2 of the absorbent cores 411 and 421 of the pad 2 in the longitudinal direction at the center CL1 of the pad 2 in the width direction when unfolded and stretched is greater than or equal to the length W1 of the absorbent core 31 of the diaper 1 in the longitudinal direction at the center CL of the diaper 1 in the width direction when unfolded and stretched (W2≥W1).

[0186] As described above, the absorbent cores 411 and 421 of the pad 2 are wider than the absorbent core 31 of the diaper 1, thus a larger protrusion T2 in the width direction is easily formed in the pad 2. Therefore, the protrusion T1 of the diaper 1 can easily fit inside the protrusion T2 of the pad 2, the protrusion T1 of the diaper 1 stably supports the protrusion T2 of the pad 2 from below, and can suppress the displacement of the protrusion T2 of the pad 2 in the width direction.

[0187] like Figure 11As shown, the absorbent core 31 of the diaper 1 has a generally hourglass shape, wherein the contraction portion 30c is located between the two ends in the longitudinal direction and has a width narrower than the two ends in the width direction. In this case, preferably, the underwear deformation guide portions 33 and 34 have portions that overlap with the contraction portion 30c in the longitudinal direction.

[0188] Similarly, the absorbent cores 411 and 421 of pad 2 also have a generally hourglass shape, wherein the contraction portion 40c is located between the two ends in the longitudinal direction and has a width narrower than the two ends in the width direction. In this case, preferably, the pad deformation guides 43 and 44 have portions that overlap with the contraction portion 40c in the longitudinal direction. Moreover, when both the first absorbent core 411 and the second absorbent core 421 forming the two-layer structure have contractions, the pad deformation guides 43 and 44 only need to have at least a portion that overlaps with the longer contraction portion 40c in the longitudinal direction, but preferably have a portion that overlaps with both contractions.

[0189] Compared to the non-contraction portions, the force that closes the wearer's legs is more easily transmitted to the contraction portions of the absorbent cores 31, 411, and 421. Furthermore, since the absorbent cores 31, 411, and 421 themselves (basic weight) are smaller in the contraction portions 30c and 40c, they can be easily deformed. Therefore, due to the underwear deformation guides 33 and 34 and the pad deformation guides 43 and 44, the absorbent cores 31, 411, and 421 can be easily deformed into the desired shape and easily form protrusions T1 and T2 that conform to the wearer's crotch.

[0190] ===End Deformation Guides 35 and 45===

[0191] like Figure 2 As shown, preferably, the absorbent core 31 of the diaper 1 is located at at least one end in the longitudinal direction of the underwear deformation guide portions 33 and 34. Figure 2 The front end of the device has an end deformation guide 35 that extends longitudinally and serves as the starting point for deformation.

[0192] Preferably, such as Figure 4 As shown, the absorbent cores 411 and 421 of the pad 2 are located at at least one end in the longitudinal direction of the pad deformation guides 43 and 44. Figure 4 The front and rear ends of the device have end deformation guides 45 and 46 that extend in the longitudinal direction and serve as the starting point for deformation.

[0193] The end deformation guides 35, 45, and 46 serve as the folding starting points for the absorbent cores 31, 411, and 421 due to the rigidity difference between adjacent areas in the width direction. The end deformation guide 35 of the diaper 1 and the end deformation guide 46 of the pad 2 are compression grooves formed by compressing at least a portion of the absorbent cores 31, 411, and 421 in the thickness direction. Furthermore, the density of the absorbent cores 31, 411, and 421 is higher in the end deformation guides 35 and 46, which serve as compression grooves; therefore, the end deformation guides 35 and 46 also diffuse excrement, thereby effectively utilizing the absorbent cores 31, 411, and 421. Moreover, the other end deformation guide 45 of the pad 2 is a portion where the absorbent core is a single layer (only the first absorbent core 411 exists) and has a lower basis weight.

[0194] The end deformation guides 35 and 46, which serve as compression grooves, function as folding starting points, and the end of the end deformation guide 45 with lower rigidity (the boundary between the two-layer and one-layer regions of the absorbent core) also functions as a folding starting point. Therefore, the longitudinal ends of the absorbent cores 31, 411, and 421 can be easily folded in the width direction using the longitudinally extending end deformation guides 35, 45, and 46 as folding starting points. This allows the front ends of the absorbent cores 31, 411, and 421 to easily deform to conform to the curve of the wearer's lower abdominal region. Similarly, the rear ends of the absorbent cores 31, 411, and 421 can easily deform to conform to the curve of the wearer's hips. This improves the fit of the absorbent cores 31, 411, and 421 to the wearer.

[0195] Furthermore, similar to the end deformation guide 35 of the diaper 1, preferably, a pair of end deformation guides 35 are provided at the ends of the absorbent core 31 in the longitudinal direction. Figure 2 The absorbent core 31 (absorbent body 10) extends outward from the central region in the longitudinal direction while sloping outward in the width direction in the corresponding side portion in the front end of the core. According to this configuration, the absorbent core 31 can be easily deformed into a shape similar to that which unfolds in the width direction from the wearer's crotch towards the groin (or buttocks). Therefore, the absorbent core 31 can more easily conform to the wearer's groin (lower abdomen) and buttocks.

[0196] In addition, such as Figure 10 and Figure 11 As shown, preferably, when the diaper 1 and pad 2 used overlapping each other are in an unfolded and elongated state and configured such that the centers of the diaper 1 and pad 2 are aligned in the longitudinal and width directions, the end deformation guide 35 of the diaper 1 has an area that overlaps with the end deformation guides 45 and 46 of the pad 2 in the plan view.

[0197] According to this construction, when the pad 2 is stacked on top of the diaper 1, the absorbent core 31 of the diaper 1 and the absorbent cores 411 and 421 of the pad 2 can be easily folded in a similar manner using the end deformation guides 35, 45, and 46 located in the same or close positions as folding starting points. Therefore, the absorbent core 31 of the diaper 1 and the absorbent cores 411 and 421 of the pad 2 can easily deform into a shape that conforms to the wearer's groin and buttocks. This improves the fit and reduces the feeling of rigidity.

[0198] Note that in the diaper 1 and pad 2 of this embodiment, the end deformation guides 35, 45, and 46 are provided in pairs on corresponding sides in the width direction at one end in the longitudinal direction, but the present invention is not limited thereto. For example, the end deformation guides may be provided in the central portion in the width direction of the end in the longitudinal direction of the diaper 1 or pad 2. Furthermore, the diaper 1 and pad 2 are not required to have end deformation guides 35, 45, and 46.

[0199] ===Other Construction of Diaper 1 and Pad 2===

[0200] The diaper 1 may have an "underwear alignment indicator" visible from the skin side surface, and the pad 2 may have a "pad alignment indicator" visible from the skin side surface. In this embodiment, the underwear deformation guides 33 and 34 (particularly a pair of deformation guide regions 33 as compression parts) serve as underwear alignment indicators, and the pad deformation guides 43 and 44 (particularly a pair of deformation guide regions 43 as compression parts) serve as pad alignment indicators. To enhance the visibility of the deformation guide regions 33 and 43 from the skin side surface, the front sheets 11 and 3 may also be compressed together with the absorbent cores 31, 411, and 421.

[0201] Users (such as wearers) can align diaper 1 and pad 2 in the appropriate position by using the underwear alignment indicator (33 and 34) and the pad alignment indicator (43 and 44). As a result, protrusions T1 and T2 with similar shapes (according to the desired shape of the corresponding deformable guide) are more easily formed in the same position in diaper 1 and pad 2, thereby improving the fit to the wearer and reducing rigidity.

[0202] Furthermore, it is easier for the user to realize that aligning the diaper 1 and pad 2 causes the underwear alignment indicators (33 and 34) and the pad alignment indicators (43 and 44) ​​to overlap each other. Therefore, it is preferable that when the diaper 1 and pad 2 are in an unfolded and extended state and configured such that the centers of the diaper 1 and pad 2 are aligned in both the longitudinal and width directions ( Figure 10 The underwear alignment indicator (33 and 34) and the pad alignment indicator (43 and 44) ​​have areas that overlap with each other in the plan view.

[0203] Based on this design, when the user stacks diaper 1 and pad 2, diaper 1 and pad 2 are more easily positioned in the appropriate relationship. Figure 10 The underwear alignment indicator (33 and 34) and the pad alignment indicator (43 and 44) ​​are arranged such that they overlap. However, the present invention is not limited to the above-described case, and the underwear alignment indicator (33 and 34) and the pad alignment indicator (43 and 44) ​​are arranged such that they overlap. Figure 10 The state shown does not require overlapping areas.

[0204] Furthermore, by using the underwear deformation guides 33 and 34 and the pad deformation guides 43 and 44 as alignment indicators, the construction of the diaper 1 and the pad 2 can be simplified compared to the case where separate alignment indicators are provided. In particular, the underwear deformation guides 33 and 34 and the pad deformation guides 43 and 44 of this embodiment have similar shapes, so they can be easily identified by the user as alignment marks.

[0205] However, the present invention is not limited to the above-described cases, and in addition to the underwear deformation guides 33 and 34 and the pad deformation guides 43 and 44, patterns (e.g., the same marks or arrows indicating the attachment position) or text indicating the attachment position used as alignment marks can be used as underwear alignment indicators and pad alignment indicators. Furthermore, the following configuration is possible: wherein only either diaper 1 or pad 2 is provided with an alignment indicator, or neither diaper 1 nor pad 2 is provided with an alignment indicator.

[0206] Moreover, in diaper 1 ( Figure 2 In this design, a connecting member 15 for connecting the pad 2 can be provided on the skin-side surface. According to this configuration, positional shift between the diaper 1 and the pad 2 can be suppressed when the diaper 1 is worn, thereby preventing reduced fit to the crotch area due to positional shift between the protrusion T1 of the diaper 1 and the protrusion T2 of the pad 2. Furthermore, the diaper 1 and the pad 2 are joined together in a flat manner by the connecting member 15. Therefore, preferably, the connecting member 15 is located on the outer side in the longitudinal direction of the underwear deformation guides 33 and 34. According to this configuration, the deformation of the underwear deformation guides 33 and 34 can be prevented from being hindered by the connecting member 15.

[0207] Similarly, in pad 2 ( Figure 4 In this design, a connecting member 6 for engaging the diaper 1 can be provided on the non-skin side surface. With this configuration, positional misalignment between the diaper 1 and the pad 2 (positional misalignment between the protrusion T1 of the diaper 1 and the protrusion T2 of the pad 2) can be suppressed when the diaper 1 is worn. Furthermore, preferably, the connecting member 6 is located on the outer side in the longitudinal direction of the pad deformation guides 43 and 44. With this configuration, deformation of the pad deformation guides 43 and 44 can be prevented from being hindered by the connecting member 6.

[0208] The joining members 15 and 6 are preferably members that allow the diaper 1 and pad 2 to be peeled off from each other without damage and that allow the diaper 1 and pad 2 to be rejoined. The joining members 15 and 6 can be, for example, male members of hook and loop fasteners or adhesive portions coated with adhesive. In addition, the diaper 1 and pad 2 may both be provided with joining members 15 and 6, or only one of them may be provided with joining members 15 or 6, or neither of them may be provided.

[0209] ===Example (Deformation Direction Specification Test)===

[0210] Figure 13 A to Figure 13 C Figure 14 A and Figure 14 B is a schematic diagram of the deformation direction specification test method. In the deformation direction specification test, the diaper (underwear-shaped absorbent item) and pad (absorbent pad) to be tested are prepared, and the test subject actually wears the test diaper and pad stacked on top of each other.

[0211] (1) First, the test subject sits in a chair with his / her feet shoulder-width apart. For example, the distance from the outer end of the left leg to the outer end of the right leg is aligned with the test subject's shoulder width. Then, their legs are put through diaper 1, and diaper 1 is pulled up to a position below the knees (see Figure 6 ).

[0212] (2) Next, while still seated in the chair, the test subject inserts the folded pad through the waist opening BH of the diaper 1. Once the folded portion of the pad contacts the skin-side surface of the diaper, the pad is unfolded, and the non-skin-side surface of the pad overlaps the skin-side surface of the diaper. If the pad or diaper has a connecting member 15 or 6, the pad and diaper are secured by the connecting member 15 or 6.

[0213] (3) Next, the test subject stood up from the chair and pulled up the diaper with the pad attached to the inside, thus completing the putting on of pad 2 and diaper 1. Then the test subject walked 10 meters with a natural stride length and width.

[0214] (4) Next, with the test subject standing with their feet shoulder-width apart, measure the width W3 of the absorbent parts 30 and 40 (excluding the rigid part of the outer component 20) at the lower end of the diaper 1, as follows: Figure 13 As shown in Figure A.

[0215] (5) Next, tear open the side joint SS of diaper 1 and remove diaper 1 and pad 2 from the wearer, while keeping the width of the absorbent body at the lower end of diaper 1 at the measured width W3, as shown. Figure 13As shown in B. Then, the diaper 1, with the pad 2 still stacked on top, is placed on the test table. Then, the lower end of the diaper 1 is fixed in a clamp 60 (e.g., a clamp 60 that clamps the absorbent body from both sides in the width direction) in such a way that the lower end (central position in the longitudinal direction) of the diaper 1 is held at the measured width W3. Note that the clamp 60 can be fixed to the diaper 1 below the outer fitting member 20 (leg pleats) located on the outer side of the absorbent body 10 in the width direction, as shown in Figure B. Figure 13 As shown in B.

[0216] (6) Then, remove pad 2 from diaper 1, and also secure pad 2 with clamp 60 in such a way that the width of absorbent 40 at the crotch (center position in the longitudinal direction) of pad 2 is maintained at the measured width W3, as shown. Figure 13 As shown in C.

[0217] (7) With the crotch width of diaper 1 and pad 2 maintained at the measured width W3 (i.e., with the concave and convex shapes formed in diaper 1 and pad 2 while still in wear), observe the protrusions protruding toward the skin (measure the number and height of the protrusions).

[0218] Specifically, such as Figure 13 As shown in Figure C, a 20mm radius extending longitudinally from the center line CL of absorbers 30 and 40 to both sides is defined as the observation range for the protrusions, and the number of protrusions formed within this observation range is counted. Furthermore, as... Figure 14 A and Figure 14 As shown in B, the heights h1 and h2 of the protrusions formed within the observation range are measured (the height from the contact surface between the test table and the lower end of the diaper 1 or pad 2 to the apex of the protrusions T1 and T2).

[0219] Note that after step (5) above, you can check whether the protrusion T1 (skin side surface) of diaper 1 and the protrusion T2 (non-skin side surface) of pad 2 are in contact with each other.

[0220] Whether the protrusions are in contact with each other can be checked based on, for example, the heights h1 and h2 of the protrusions of diaper 1 and pad 2. Specifically, the protrusions are considered to be in contact when the height h1 of the protrusion T1 of diaper 1 is greater than or equal to the value obtained by subtracting the thickness of pad 2 from the height h2 of the protrusion T2 of pad 2. Note that the thickness of pad 2 is the maximum thickness of the section where absorbent cores 411 and 421 exist in the crotch 2C of pad 2. The thickness can be measured by known methods, for example, using a measuring device (e.g., PEACOCK DIAL THICKNESS GAUGE Model T06795 or equivalent) to measure pad 2 in its unfolded and stretched state, wherein the load during the measurement is 3 g / cm. 2 .

[0221] Alternatively, when diaper 1 and pad 2 are stacked and the protrusion T2 is pressed from the skin-side surface of pad 2, protrusion contact can be determined if there is a portion of pad 2 that does not form a depression (a portion that does not create space between pad 2 and diaper 1).

[0222] Figure 15 A to Figure 15 C is a diagram showing the test results for the specified deformation direction. Figure 16 This is a diagram showing the results of rigidity during wear. Diapers and pads were actually manufactured, and deformation direction specification tests were performed. The diaper and pad according to this embodiment are diaper 1 and pad 2 of this embodiment. The diaper and pad according to the comparative example are a panty-shaped disposable diaper without the panty deformation guides 33 and 34 of this embodiment, and an absorbent pad without the pad deformation guides 43 and 44 of this embodiment.

[0223] The test was conducted on 35 participants (28 adult men and 7 adult women). The participants' waist sizes were as follows: 6 were S to M, 5 were M, 15 were M to L, 5 were L, 3 were L to LL, and 1 was LL.

[0224] Figure 15 A shows the results of a test according to the deformation direction specification according to the present invention, that is, the results when the highest protrusion among the protrusions formed within the observation range is identified, and protrusions with a height less than 50% of the height of the highest protrusion are not counted as protrusions. Figure 15 B shows the results when the highest protrusion among the protrusions formed within the observation range is identified, and protrusions with a height less than 20% of the height of the identified protrusion are not counted as protrusions. Figure 15 C shows the results of counting all protrusions formed within the observation range, regardless of the height of the protrusions. Figure 15 B and Figure 15 C shows the results of a deformation direction specification test performed under a more stringent standard than that of the present invention (the results of the following test method: in which multiple protrusions are easily identified and the deformation directions are easily determined to be different).

[0225] As a result, according to Figure 15In the case of diaper 1 in this embodiment, as shown in A, for 83% of diapers 1, there is only one protrusion (forming a main protrusion), the protrusion of diaper 1 is not offset by pad 2, and the deformation direction in the thickness direction is the same for diapers 1 and pad 2 worn in a stacked manner. Similarly, in the case of pad 2 in this embodiment, for 89% of pad 2, there is one protrusion, and the deformation direction in the thickness direction is the same for diapers 1 and pad 2 worn in a stacked manner.

[0226] In contrast, 69% of the diapers according to the comparative example have a protrusion, and the deformation direction in the thickness direction is the same for diapers and pads worn in an overlapping manner. Furthermore, 60% of the pads according to the comparative example have a protrusion, and the deformation direction in the thickness direction is the same for diapers and pads worn in an overlapping manner.

[0227] In addition, Figure 15 In the results shown in B, 83% of the diapers 1 according to this embodiment deformed in the same direction as the pad 2, and 89% of the pads 2 according to this embodiment deformed in the same direction as the diapers 1. In the comparative examples, only a small percentage of the diapers (51%) and pads (34%) deformed in the same direction.

[0228] exist Figure 15 In the results shown in C, in the case of diaper 1 in this embodiment, 77% of diaper 1 deformed in the same direction as pad 2, and in the case of pad 2 in this embodiment, 83% of pad 2 deformed in the same direction as diaper 1. In the comparative example, only a small percentage of diapers (49%) and pads (31%) deformed in the same direction.

[0229] The results above show that the combination of the diaper 1 with underwear deformation guides 33 and 34 in this embodiment and the pad 2 with pad deformation guides 43 and 44 in this embodiment, compared to the combination of the diaper and pad in the comparative example, allows the diaper and pad to deform more easily in the same thickness direction in the crotch area. Therefore, by combining the diaper 1 and pad 2 of this embodiment, it can be said that protrusions with similar shapes (protruding towards the skin) are easily formed in the same position without canceling each other out, thereby improving the fit to the wearer's crotch area.

[0230] In addition, a subset of the test subjects (22 individuals) who underwent the deformation direction specification test were asked to evaluate the rigidity sensation when wearing the combination of diaper 1 and pad 2 of this embodiment, as well as when wearing the combination of diaper and pad of the comparative example. Test subjects were asked to rate the rigidity sensation on a 5-point scale (1 to 5 points), with lower scores given for products that felt less rigid.

[0231] As a result, Figure 16 As shown, compared with the rigidity assessment score (3.64) of the diaper and pad combination of the comparative example, the rigidity assessment score (2.82) of the diaper 1 and pad 2 combination of this embodiment is lower, thus indicating that the rigidity of the combination is lower.

[0232] Based on the above results, it can be concluded that in the deformation direction specification test, the probability that the deformation direction of the diaper 1 in the thickness direction is the same as that in the thickness direction of the pad 2 when the absorbent core 31 is deformed is 75% or greater (preferably, the probability is 83% or greater). Figure 15 In the case of the underwear deformation guides 33 and 34 (as shown in A), the rigidity felt when wearing a diaper tends to be lower than that of the diaper according to the comparative example (the diaper whose deformation direction is 69% likely to be the same as the deformation direction of the pad).

[0233] Similarly, it can be said that in the deformation direction specification test, the probability that the deformation direction of the pad 2 in the thickness direction is the same as the deformation direction in the thickness direction of the diaper 1 is 75% or greater (preferably, 89% or greater, such as...). Figure 15 In the case of pad deformation guides 43 and 44 (as shown in A), the rigidity felt when wearing the pad tends to be lower than that of the pad according to the comparative example (the pad in which the deformation direction is 60% likely to be the same as the deformation direction of the diaper).

[0234] More preferably, based on Figure 15 According to result B, in the test specifying the deformation direction, when a protrusion with a height less than 20% of the height of the highest protrusion is not counted as a protrusion, the following is preferred.

[0235] Specifically, preferably, the diaper 1 includes a deformation direction specification test in which the absorbent core 31 is deformed such that the deformation direction of the diaper 1 in the thickness direction is the same as the deformation direction of the pad 2 in the thickness direction, with a probability of 75% or greater (preferably). Figure 15 The deformation guide parts 33 and 34 of the underwear (83% in B) are shown.

[0236] Similarly, preferably, the pad 2 includes a deformation direction specification test in which the absorbent cores 411 and 421 are deformed such that the deformation direction of the pad 2 in the thickness direction is the same as the deformation direction in the thickness direction of the diaper 1, with a probability of 75% or greater (preferably). Figure 15 The deformation guides 43 and 44 (89% in B) are pads.

[0237] Furthermore, more preferably, based on Figure 15The following is the preferred result of C, in the deformation direction specification test, when all protrusions are counted regardless of their height.

[0238] Specifically, preferably, the diaper 1 includes a deformation direction specification test in which the absorbent core 31 is deformed such that the deformation direction of the diaper 1 in the thickness direction is the same as the deformation direction of the pad 2 in the thickness direction, with a probability of 75% or greater (preferably). Figure 15 The deformation guide parts 33 and 34 of the underwear (77% in C) are shown.

[0239] Similarly, preferably, the pad 2 includes a deformation direction specification test in which the absorbent cores 411 and 421 are deformed such that the deformation direction of the pad 2 in the thickness direction is the same as the deformation direction in the thickness direction of the diaper 1, with a probability of 75% or greater (preferably). Figure 15 The pad deformation guides 43 and 44 (83% in C) are included.

[0240] Under the above conditions, it can be said that no small unevenness is formed in the crotch area of ​​diaper 1 and pad 2. Therefore, diaper 1 and pad 2 can be easily deformed, such as Figure 9 As shown in Figure A, protrusions T1 and T2 are formed with an ideal shape, thereby improving the fit to the wearer and enabling a reduction in rigidity. Similarly, in the above case, compared to the diaper and pad according to the comparative example, when the pad and diaper are used together, the deformation direction is more likely to be the same, and lower rigidity results were also obtained in the evaluation results after actual use. Therefore, it can also be said that the perceived rigidity can be reduced in the above case.

[0241] The above embodiments are provided to facilitate understanding of the present invention and are not intended to be construed as limiting the invention. Modifications or improvements may be made to the invention without departing from its spirit, not to mention that the invention includes its equivalents.

[0242] Explanation of reference numerals in the attached figures

[0243] 1. (Underwear-shaped) Diapers (underwear-shaped absorbent items).

[0244] 2 (urine) pads (absorbent pads).

[0245] 3. Front panel, 4. Back panel, 5. Side panel

[0246] 6. Connecting components,

[0247] 50 Leak-proof wall section,

[0248] 51 Leak-proof wall elastic component; 52 Non-skin side expandable component;

[0249] 10 Absorbent body, 11 Front panel, 12 Back panel

[0250] 13 Side panels, 14 Leak-proof wall elastic components,

[0251] 15. Connecting components,

[0252] 20 External components, 21 Skin side panels,

[0253] 22 Anterior non-skinned lateral image, 23 Posterior non-skinned lateral image,

[0254] 24. Hip cover, 25. Waist support elastic component.

[0255] 26. Leg elastic components,

[0256] 30 Absorbent, 31 Absorbent Core, 32 Core-Encapsulated Sheet

[0257] 33 Deformation guidance area (underwear deformation guidance section).

[0258] 34. Central deformation guide (underwear deformation guide).

[0259] 35. End deformation guide part.

[0260] 40 absorbers,

[0261] 41 First absorber,

[0262] 411 First absorbent core, 412 First core-encapsulated sheet,

[0263] 42 Second absorber,

[0264] 421 Second absorbent core, 422 Second core encapsulated sheet,

[0265] 43 Deformation guide area (pad deformation guide part).

[0266] 44. Central deformation guide (pad deformation guide).

[0267] 45 End deformation guide, 46 End deformation guide,

[0268] 60 clamps,

[0269] 201 (Underwear-shaped absorbent item) packaging,

[0270] 211 Main Packaging, 212 Brand Display Section, 213 Logo Display Section

[0271] 202 (Absorbent Pad) Packaging,

[0272] 214 Main Packaging, 215 Brand Display Section, 216 Logo Display Section

Claims

1. An absorbent article in the shape of underwear, which, when unfolded, has a longitudinal direction and a width direction. The absorbent underwear-shaped item includes: Absorbent core; and The underwear deformation guide is located inside the outer edge of the absorbent core. The underwear deformation guide causes the absorbent core to deform in the crotch area into a protruding shape that faces the skin. The underwear deformation guide portion includes two pairs of deformation guide areas spaced apart in the longitudinal direction and arranged on opposite sides of the longitudinal direction centerline. Each pair of deformation guide regions includes two deformation guide regions that are inclined such that one side extends outward in the longitudinal direction and the other side extends from the corresponding end in the width direction of the absorbent core toward the center. The underwear deformation guide includes a central deformation guide that extends along the longitudinal direction in a central portion relative to both the longitudinal and width directions. The basis weight of the absorbent core is lower in the central deformation guide than in the region adjacent to the central deformation guide on the outer side in the width direction. The absorbent core of the panty-shaped absorbent article includes an end deformation guide at at least one end in the longitudinal direction, which is closer to the panty deformation guide. The end deformation guide extends along the longitudinal direction and is configured as a deformation starting point.

2. An absorbent article in the shape of underwear, which, when unfolded, has a longitudinal direction and a width direction. The absorbent underwear-shaped item includes: Absorbent core; and The underwear deformation guide is located inside the outer edge of the absorbent core. The underwear deformation guide causes the absorbent core to deform in the crotch area into a protruding shape that faces the skin. The underwear deformation guide includes two pairs of deformation guide areas spaced apart in the longitudinal direction and arranged on opposite sides of the longitudinal centerline. Each pair of deformation guide regions includes two deformation guide regions that are inclined such that one side extends outward in the longitudinal direction and the other side extends from the corresponding end in the width direction of the absorbent core toward the center. The absorbent core of the underwear-shaped absorbent article includes a contractile portion located between two ends in the longitudinal direction and having a width in the width direction narrower than the two ends. The underwear deformation guide has a portion that overlaps with the contraction portion in the longitudinal direction, and the absorbent core of the underwear-shaped absorbent article includes an end deformation guide at at least one end in the longitudinal direction relative to the underwear deformation guide. The end deformation guide extends along the longitudinal direction and is configured as a deformation starting point.

3. The underwear-shaped absorbent article according to claim 1 or 2, wherein, The panty-shaped absorbent article also includes a bonding member disposed on the skin-side surface and configured to bond with the absorbent pad, and The connecting member is located on the outer side of the underwear deformation guide in the longitudinal direction.

4. The underwear-shaped absorbent article according to claim 1 or 2, wherein, A pair of end deformation guides are disposed in corresponding sides in the width direction of the ends of the absorbent core. The pair of end deformation guides extend outward from the central side in the longitudinal direction while tilting outward in the width direction.

5. A combination of an underwear-shaped absorbent article and an absorbent pad, comprising: The underwear-shaped absorbent item; and The absorbent pad, The underwear-shaped absorbent item has a longitudinal direction and a width direction when unfolded. The underwear-shaped absorbent item is contained within the main packaging body. The panty-shaped absorbent item includes an absorbent panty core. The absorbent pad, in its unfolded state, has a longitudinal direction and a width direction. The absorbent pad is housed in a separate packaging body, distinct from the main packaging body. The panty-shaped absorbent article includes a panty deformation guide located inside the outer edge of the panty absorbent core. When the absorbent pad, which has longitudinal and width directions and includes an absorbent core, is disposed on the skin-side surface of the panty-shaped absorbent article in its unfolded state, The underwear deformation guide deforms the underwear absorbent core into a protruding shape facing the skin, so as to contact the protruding part of the absorbent pad in the crotch area, which is also deformed into a protruding shape facing the skin. The underwear deformation guide includes a pair of deformation guide areas on the back side of the underwear-shaped absorbent article. The inner edge of each of the pair of deformation guide areas is inclined on the back side of the panty-shaped absorbent article, extending outward in the longitudinal direction while extending from the corresponding end of the panty absorbent core in the width direction toward the center. The absorbent core of the underwear includes an end deformation guide at at least one end in the longitudinal direction, which is closer to the end of the underwear deformation guide than the underwear deformation guide. The end deformation guide extends along the longitudinal direction and is configured as a deformation starting point.

6. A combination of an underwear-shaped absorbent article and an absorbent pad, comprising: The absorbent pad; and The underwear-shaped absorbent item The absorbent pad, in its unfolded state, has a longitudinal direction and a width direction. The absorbent pad is contained within the packaging body. The absorbent pad includes a pad deformation guide. The absorbent pad can be disposed on the skin-side surface of the underwear-shaped absorbent article. The underwear-shaped absorbent item has a longitudinal direction and a width direction when unfolded. The panty-shaped absorbent item includes an absorbent panty core. When the panty-shaped absorbent article and the absorbent pad are in an unfolded and extended state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal and width directions, the pad deformation guide is provided in at least one of the six equally divided regions in the longitudinal direction of the absorbent pad in the unfolded and extended state. The panty-shaped absorbent article includes at least a portion of the panty deformation guide in an area that overlaps with the at least one area where the pad deformation guide is provided. The underwear deformation guide portion deforms the absorbent core of the underwear. The underwear deformation guide includes a pair of deformation guide areas on the back side of the underwear-shaped absorbent article. The inner edge of each of the pair of deformation guide areas is inclined on the back side of the panty-shaped absorbent article, extending outward in the longitudinal direction while extending from the corresponding end of the panty absorbent core in the width direction toward the center. The absorbent core of the underwear includes an end deformation guide at at least one end in the longitudinal direction, which is closer to the end of the underwear deformation guide than the underwear deformation guide. The end deformation guide extends along the longitudinal direction and is configured as a deformation starting point.

7. The combination of the underwear-shaped absorbent article and the absorbent pad according to claim 6, wherein, When the panty-shaped absorbent article and the absorbent pad are in an unfolded and extended state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, In the plan view, the underwear deformation guide has an area that overlaps with the pad deformation guide.

8. The combination of the underwear-shaped absorbent article and the absorbent pad according to any one of claims 5 to 7, wherein, The underwear deformation guide includes a pair of deformation guide areas on the abdominal side; The inner edge of each of the pair of deformation guide areas is inclined such that it extends outward in the longitudinal direction while extending from the corresponding end of the absorbent core of the underwear toward the center in the width direction.

9. The combination of the underwear-shaped absorbent article and the absorbent pad according to claim 8, wherein, The absorbent pad includes a pad deformation guide configured to deform an absorbent core disposed within the absorbent pad. The pad deformation guide includes two pairs of deformation guide regions spaced apart in the longitudinal direction and arranged on opposite sides of the longitudinal direction centerline. Each pair of deformation guide regions includes two deformation guide regions inclined such that one side extends outward in the longitudinal direction and the other side extends from the corresponding end in the width direction of the pad absorbent core toward the center. When the panty-shaped absorbent article and the absorbent pad are in an unfolded and extended state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, On each side of the longitudinal direction, the inner ends of the tops of a pair of deformation guiding regions of the underwear deformation guide are positioned relative to the longitudinal direction in any of the following positioning methods: On the outer side of the inner end of the top of a pair of deformation guiding regions of the pad deformation guide; and Align the inner ends of the top of the pair of deformation guide regions of the pad deformation guide with the pad deformation guide.

10. The combination of the underwear-shaped absorbent article and the absorbent pad according to claim 8, wherein, The absorbent pad includes a pad deformation guide configured to deform an absorbent core disposed within the absorbent pad. The pad deformation guide includes two pairs of deformation guide regions spaced apart in the longitudinal direction and arranged on opposite sides of the longitudinal direction centerline. Each pair of deformation guide regions includes two deformation guide regions inclined such that one side extends outward in the longitudinal direction and the other side extends from the corresponding end in the width direction of the pad absorbent core toward the center. When the panty-shaped absorbent article and the absorbent pad are in an unfolded and extended state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, On each side of the longitudinal direction, the inner end of the top of a pair of deformation guide areas of the underwear deformation guide is located inside the inner end of the top of a pair of deformation guide areas of the pad deformation guide relative to the longitudinal direction.

11. The combination of the underwear-shaped absorbent article and the absorbent pad according to any one of claims 5 to 7, wherein, The underwear deformation guide includes a central deformation guide that extends along the longitudinal direction in the central portion of the underwear-shaped absorbent article relative to the longitudinal and width directions. The basis weight of the absorbent core of the underwear is lower in the central deformation guide than in the region adjacent to the central deformation guide on the outer side in the width direction.

12. The combination of the underwear-shaped absorbent article and the absorbent pad according to any one of claims 5 to 7, wherein, The panty-shaped absorbent article also includes a panty alignment indicator visible from the skin-side surface. The absorbent pad includes a pad alignment display visible from the skin-side surface, and When the panty-shaped absorbent article and the absorbent pad are in an unfolded and extended state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, In the plan view, the underwear alignment indicator has an area that overlaps with the pad alignment indicator.

13. The combination of the underwear-shaped absorbent article and the absorbent pad according to any one of claims 5 to 7, wherein, The panty-shaped absorbent article also includes a bonding member disposed on the skin-side surface and configured to engage the absorbent pad, and The connecting member is located on the outer side of the underwear deformation guide in the longitudinal direction.

14. The combination of the underwear-shaped absorbent article and the absorbent pad according to any one of claims 5 to 7, wherein, The absorbent core of the underwear includes a contractile portion located between two ends in the longitudinal direction and having a width in the width direction narrower than the two ends. The underwear deformation guide has a portion that overlaps with the contraction portion in the longitudinal direction.

15. The combination of the underwear-shaped absorbent article and the absorbent pad according to claim 5 or 6, wherein, A pair of end deformation guides are disposed in corresponding sides in the width direction of the ends of the absorbent core of the underwear. The pair of end deformation guides extend outward from the central side in the longitudinal direction while tilting outward in the width direction.

16. The combination of the underwear-shaped absorbent article and the absorbent pad according to claim 5 or 6, wherein, The absorbent core disposed in the absorbent pad includes Pad deformation guide, and An end deformation guide is located at at least one end in the longitudinal direction, which is closer to the pad deformation guide. The end deformation guide extends in the longitudinal direction and is configured as a deformation starting point, and When the panty-shaped absorbent article and the absorbent pad are in an unfolded and extended state and configured such that the centers of the panty-shaped absorbent article and the absorbent pad are aligned in the longitudinal direction and the width direction, In the plan view, the end deformation guide of the underwear-shaped absorbent article has an area that overlaps with the end deformation guide of the absorbent pad.

17. The combination of the underwear-shaped absorbent article and the absorbent pad according to any one of claims 5 to 7, wherein, In its unfolded and extended state, the length in the width direction of the absorbent core of the underwear-shaped absorbent article at the center in the longitudinal direction is... Less than or equal to In the unfolded and elongated state, the length of the pad absorbent core in the width direction at the center of the pad in the longitudinal direction.

18. The combination of the underwear-shaped absorbent article and the absorbent pad according to any one of claims 5 to 7, wherein, The packaging body of the underwear-shaped absorbent item includes The brand display section displays the brand name shared by the panty-shaped absorbent item and the absorbent pad; and A labeling display section is provided to distinguish between the underwear-shaped absorbent item and the absorbent pad.

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