WO2017199300A1

WO2017199300A1 - Pants-type disposable diaper and method for wearing pants-type disposable diaper

Info

Publication number: WO2017199300A1
Application number: PCT/JP2016/064504
Authority: WO
Inventors: 貴仁永井; 祐介川上; 純子園田; 市川　誠
Original assignee: ユニ・チャーム株式会社
Priority date: 2016-05-16
Filing date: 2016-05-16
Publication date: 2017-11-23
Also published as: JP2017205501A; CN109310547B; JP7025128B2; CN109310547A; PH12018502240A1

Abstract

A pants-type disposable diaper (1) with a removable absorbent pad (100), the diaper (1) including an absorbent body (10), a pair of leak prevention walls (50), and an outer layer sheet (30). Each of the leak prevention walls (50) has a connecting portion (61) in a position in which the outer layer sheet (30) has the smallest lateral length in a longitudinal direction. The sum of the lateral width of the absorbent body (10) and twice the distance between a lateral edge of the absorbent body (10) and the connecting portion (61) in the position in which the outer layer sheet (30) has the smallest lateral length when the absorbent body (10) and the leak prevention walls (50) are extended laterally is greater than the sum of the lateral width of the absorbent pad (100) and twice the thickness of the absorbent pad (100) in the position in which the outer layer sheet (30) has the smallest lateral length when the absorbent pad (100) is extended laterally. When the absorbent pad (100) is inserted inside the diaper (1), the space between lateral inner edges of the connecting portions (61) has a portion that is narrower than the lateral width of the absorbent pad (100).

Description

Pants-type disposable diaper and method of mounting pants-type disposable diaper

The present invention relates to a pants-type disposable diaper and a method for attaching a pants-type disposable diaper.

DESCRIPTION OF RELATED ART Conventionally, the disposable diaper of a pants type is used. A general pants-type disposable diaper is provided with an absorbent main body having an absorbent body which has a longitudinal direction and a width direction in the unfolded state and absorbs excrement. And the leak-proof wall part which prevents that the excretion absorbed by the absorber leaks to the outer side of a diaper is provided along the circumference of a wearer's leg on the both sides of the width direction of this absorptive body. For example, according to Patent Document 1, a leak-barrier cuff (leak-barrier wall portion) is provided on both sides of the main body (absorbent main body), and in the middle portion which is a region applied to the wearer's thigh when worn There is disclosed a disposable diaper in which it is difficult for the leak-barrier cuff to protrude to the outside (the side of the diaper) by shortening the erectable length of the leakable cuff and for preventing lateral leakage.

JP 2005-218876

When using a disposable diaper, the separate absorption pad may be accumulated and used for the inner side (skin side) of a diaper. By putting an absorbent pad between the wearer's body and the diaper, it is possible to replace only the absorbent pad without removing the diaper when excretion is performed, so the load of replacement is large. It can be reduced. However, in a pant-type disposable diaper, it is difficult for the wearer to wear the absorbent pad in a state where the absorbent pad is not displaced in the diaper, and the displacement of the absorbent pad may cause leakage of excrement. . In addition, when it is intended to stack the absorption pad on a pant-type diaper having a leak-proof wall as in Patent Document 1, the leak-proof wall is disposed by covering the leak-proof wall with the absorbent pad. Was not working, and there was a problem such as excrement leaked to the clothes side.

The present invention has been made in view of the conventional problems as described above, and its object is to position the absorbent pad when using the absorbent pad over the pants-type disposable diaper having the leak-proof wall. And make it difficult for excrement to leak out of the diaper.

The main invention for achieving the above object comprises an absorbent main body provided with an absorbent body having a longitudinal direction and a lateral direction which cross each other, and an elastic member which is expanded and contracted in the longitudinal direction, and the lateral of the absorbent main body A pair of leak-proof walls provided on both sides of the direction, and an outer layer sheet provided on the non-skin side of the absorbent main body, and liquid absorbent absorbent on the skin side in the thickness direction of the absorbent main body It is a pants-type disposable diaper in which a pad can be attached and removed, wherein the pair of leak-barrier walls is at a position where the lateral length of the outer layer sheet is at least at least in the longitudinal direction. When the absorbent main body and the leakage preventing wall are extended such that the lengths of the absorbent main body and the leakage preventing wall are maximized in the lateral direction. Before the minimum position of The sum of the lateral width of the absorbent body and twice the distance between the lateral end of the absorbent body of the leakproof wall and the joint in the lateral direction is: When the absorbent pad is elongated so as to maximize the length of the absorbent pad, when the absorbent pad is elongated so that the length of the absorbent pad is maximized in the lateral direction The pants type, which is greater than the sum of the lateral width of the absorbent pad at the minimum position when the absorbent pad is inserted into the pants-type disposable diaper and twice the thickness of the absorbent pad. When the absorbent pad is inserted into a disposable diaper, the distance between the inner ends in the lateral direction of the pair of joint portions is smaller than the lateral width of the absorbent pad. Do Is a tree-type disposable diapers.
Other features of the present invention will be apparent from the description of the present specification and the accompanying drawings.

ADVANTAGE OF THE INVENTION According to this invention, when using an absorption pad in piles and using it for the underpants type disposable diaper which has a leak-proof wall, while making position shift of an absorption pad hard to produce, it controls that excrement leaks out of a diaper can do.

It is a top view of diaper 1 which is a development and extension state. It is the schematic perspective view which looked at the diaper 1 from the ventral side. FIG. 3A is a schematic cross-sectional view taken along line AA in FIG. FIG. 3B is a schematic cross-sectional view taken along line BB in FIG. 1A. FIG. 3C is a schematic cross-sectional view taken along the line CC in FIG. 1A. It is a top view of leak-proof wall 50 which has been developed and extended. It is a schematic sectional drawing expanded and represented about the area | region D of FIG. 3C. Drawing 6A is a figure explaining the wearing condition of diaper 1 before excretion is performed. Drawing 6B is a figure explaining the wearing condition of diaper 1 after excretion is performed. It is a top view of absorption pad 100 which is a development and extension state. FIG. 8A is a schematic cross-sectional view taken along the line EE in FIG. FIG. 8B is a schematic cross-sectional view along the line FF in FIG. It is a figure explaining mounting | wearing operation | movement of the diapar 1. FIG. It is a schematic sectional drawing of the diapar 1 in the state which inserted the absorption pad 100. As shown in FIG. It is a figure showing a state when the absorptive main body 10, the leak-proof wall 50, and the absorption pad 100 are extended to a horizontal direction. It is a schematic plan view explaining the physical relationship of diaper 1 and absorption pad 100 in the state where absorption pad 100 was inserted in diaper 1.

At least the following matters will be made clear by the present specification and the description of the accompanying drawings.
An absorbent main body comprising an absorbent body having a longitudinal direction and a lateral direction intersecting each other, and an elastic member expandable and contractible in the longitudinal direction, and a pair of leakage preventing means provided on both sides in the lateral direction of the absorbent main body A pants-type disposable diaper comprising a wall and an outer layer sheet provided on the non-skin side of the absorbent body, wherein the absorbent pad can be attached and removed to the skin side in the thickness direction of the absorbent body. The pair of leakage preventing walls have a joint portion in which the one side faces in the thickness direction are joined to each other at a position where the lateral length of the outer layer sheet is at least minimal in the longitudinal direction. And the absorption at the minimum position when the absorbent main body and the leak-proof wall are extended so that the lengths of the absorbent main body and the leak-proof wall become maximum in the lateral direction. The lateral width of the body and the The sum of the double of the distance between the lateral end of the absorbent body and the joint in the wall is such that the absorption pad length is maximized in the lateral direction. When the absorbent pad is inserted into the pants-type disposable diaper when the absorbent pad is extended so that the length of the absorbent pad becomes maximum in the lateral direction when the pad is extended When the absorbent pad is inserted into the pants-type disposable diaper, the absorbent pad is larger than the sum of the lateral width of the absorbent pad and the double of the thickness of the absorbent pad at the minimum position. The pants-type disposable diaper has a portion in which the distance between the inner ends in the lateral direction of the joint portion is narrower than the lateral width of the absorbent pad.

According to such a pants-type disposable diaper, when using the absorbent pads in an overlapping manner, the lateral ends of the absorbent pad are accommodated in the space between the junction of the leakproof wall and the skin side of the absorbent body. It is possible to insert the absorbent pad without interfering with or overlying the leakproof wall. Moreover, since the inserted absorbent pad is held down in the thickness direction by the joint portion of the leakproof wall, the absorbent pad is prevented from being separated. Thereby, while making position shift of an absorption pad hard to produce, it can control that excrement leaks outside the diaper by the original function of a leak-proof wall.

In such a pants-type disposable diaper, the absorbent pad has a pair of absorbent pad leakage barriers on both sides in the lateral direction, and the lateral direction of the pair of absorbent pad leakage barriers at the minimum position. It is desirable that the distance between the two is smaller than the distance between the inner ends in the lateral direction of the pair of joints.

According to such a pants-type disposable diaper, since the leak-proof wall of the absorption pad is erected and disposed between the pair of leak-proof walls provided in the absorbent main body, double leak prevention in the lateral direction It becomes arrangement that a wall is provided. Thereby, it becomes easy to control that excrement leaks out of the underpants type disposable diaper. In addition, the absorbent main leakage barrier located on both sides of the leakage barrier of the absorption pad prevents the leakage barrier of the absorption pad from spreading excessively outward in the lateral direction, and the misalignment of the leakage barrier is also achieved. It becomes difficult to occur. This ensures good fit.

In the pants-type disposable diaper, a plurality of leak-barrier elastic members that extend and contract in the longitudinal direction are provided in the lateral direction on the leak-barrier wall, and in the lateral direction, more than the joint portion It is desirable that the number of the leakproof wall elastic members disposed outside is larger than the number of the leakproof wall elastic members disposed inside the joint portion.

According to such a pants-type disposable diaper, by arranging a large number of elastic members in a region where the rigidity on the outer side in the lateral direction is lower than that of the junction in the leakproof wall, the region corresponds to a curved surface according to the unevenness of the wearer. To improve the fit to the skin of the wearer. Further, by providing a plurality of elastic members, it is difficult to concentrate the contraction force (pressure) acting on the leak-proof wall in one place, and it is possible to suppress the deterioration of the wearing comfort of the underpants type disposable diaper.

In such a pants-type disposable diaper, in the lateral direction, the lateral direction of the plurality of the leak-barrier elastic members disposed outside the joint is more in the lateral direction than in the lateral direction. Of the leakage preventing wall elastic members disposed on the inner side, the leakage preventing wall elastic member located on the outermost side and the leakage preventing wall elastic member located on the outer side of the joint portion are the innermost. It is desirable that the lateral distance from the located leakproof wall elastic member be wider.

According to such a pants-type disposable diaper, when the absorbent pad is inserted into the diaper 1, the distance between the leakproof wall elastic member on the inner side than the joint and the leakproof wall elastic member on the outer side than the joint Since it is wide, the finger is hooked to the part where the interval is wide, and it becomes easy to pull out the leak-barrier wall (joint part) to the skin side of the absorbent pad. Thereby, it becomes easy to insert an absorption pad correctly, and the leak etc. of excretion are suppressed.

In such a pants-type disposable diaper, the absorbent pad has a liquid absorbent pad absorber, and the length of the pad absorber is maximized in the lateral direction at the minimum position. The width of the pad absorber when the pad absorber is stretched is equal to the width of the absorber when the absorber is stretched so that the length of the absorber becomes maximum in the lateral direction. It is desirable to be wide.

According to such a pants-type disposable diaper, it is possible to increase the absorption capacity of excrement and the like as compared to the case of using the pants-type disposable diaper without using a pad absorbent, and the diaper change interval Can be made longer. In addition, the absorbent main body has a structure in which it is difficult for the absorbent main body to sag downward due to the joint portion provided in the leak-proof wall, so that the pad absorber is located downward even if it is absorbed when excrement is absorbed. Less likely to sag, less likely to deteriorate fit.

In such a pants-type disposable diaper, the absorbent pad has a liquid absorbent pad absorber, and the length of the pad absorber is maximized in the lateral direction at the minimum position. The width of the pad absorber when the pad absorber is stretched is equal to the width of the absorber when the absorber is stretched so that the length of the absorber becomes maximum in the lateral direction. It is desirable that it is wide.

According to such a pants-type disposable diaper, it is possible to increase the absorption capacity of excrement and the like as compared with the case of using the pants-type disposable diaper without using a pad absorbent. In addition, since it is sufficient to replace only the absorbent pad without replacing the diaper itself when excretion is performed, it is possible to improve the ease of replacement and to lengthen the interval of diaper replacement. Furthermore, the absorbent main body has a structure in which the absorbent main body is unlikely to sag downward due to the joint portion provided on the leak-proof wall, so that the pad absorber is positioned downward even if the excrement is absorbed to be heavy. Less likely to sag, less likely to deteriorate fit.

In such a pants-type disposable diaper, the pad absorbent has a narrow portion with the narrowest width in the lateral direction in a region between both ends of the absorbent pad in the longitudinal direction, In the direction, it is desirable that the joint portion and the narrow portion overlap, and the length of the joint portion in the longitudinal direction is longer than the length of the narrow portion in the longitudinal direction.

According to such a pants-type disposable diaper, it is possible to hold the absorbent pad firmly between the joints of the leakproof wall in the area where the narrow part is formed in the crotch of the wearer. Positional displacement of the absorbent pad is unlikely to occur and leakage of excrement is unlikely to occur. Furthermore, when the absorbent pad is inserted, the absorbent pad can be firmly inserted into the diaper even if the positional deviation in the longitudinal direction occurs between the absorbent pad and the diaper.

In such a pants-type disposable diaper, the absorber has a constricted portion between both ends of the absorber in the longitudinal direction, and in the thickness direction, the pair of bonding portions are respectively connected to the absorber It is desirable that they do not overlap, and in the lateral direction, the distance between the pair of joints is shorter than the length at both longitudinal ends of the absorber.

According to such a pants-type disposable diaper, the junction is formed in the region within the constriction of the absorber, and the junction in the region causes the junction to fold the leak-proof wall, and the rise height of the leak-proof wall is You can avoid getting too high. In addition, since the joint portion does not overlap with the absorber, the joint portion with high rigidity is less likely to be pressed against the body (skin side) of the wearer when worn, and the deterioration of the touch when wearing the diaper can be suppressed.

The pants-type disposable diaper is provided with an inner layer sheet provided on the skin side of the absorbent main body, and the pair of leak preventing walls are end-joined to the inner layer sheet at both end portions in the longitudinal direction. The pants-type disposable diaper, having a part, and the non-junction part where the leak preventing wall is not joined in the thickness direction between the junction part and the end junction part in the longitudinal direction; When the absorbent pad is inserted, at least a part of the longest portion of the absorbent pad in the lateral direction overlaps the non-joining part in the longitudinal direction, and the end junction in the lateral direction It is desirable that the spacing between the parts be shorter than the maximum length of the absorbent pad in the lateral direction.

According to such a pants-type disposable diaper, the non-joint portion of the leak-barrier having low rigidity and easily deformed acts like a pocket, and the widest part of the absorbent pad can be accommodated completely. It becomes possible. In addition, because the end joint has a narrow gap, even if the position of the absorbent pad is shifted in the longitudinal direction, the widest part of the absorbent pad is caught on the end joint, so the longitudinal direction of the absorbent pad It becomes easy to control the position shift in

In the pants-type disposable diaper, the ventral side end portion of the outer layer sheet in the longitudinal direction is a ventral side folded portion folded back in the longitudinal direction, and the back end portion of the outer layer sheet in the longitudinal direction And a dorsal folded portion folded back inward in the longitudinal direction, and a distance between both ends in the longitudinal direction of the absorbent pad is the longitudinal inner end portion of the ventral folded portion Desirably, the distance between the longitudinal inner end of the dorsal fold and the longitudinal direction is shorter than the longitudinal direction.

According to such a pants-type disposable diaper, even when the position of the absorbent pad is shifted to the ventral side or the dorsal side in the longitudinal direction, the longitudinal end of the absorbent pad is the folded portion of the exterior sheet and the inner layer sheet Since the absorbent pad is caught in the gap (dry edge) formed between the two, the longitudinal displacement of the absorbent pad is prevented. Thereby, when the diaper is worn, the absorption pad is prevented from protruding from the longitudinal direction end of the diaper.

In addition, an absorbent main body provided with an absorbent body having a longitudinal direction and a lateral direction crossing each other, and an elastic member capable of expanding and contracting in the longitudinal direction, and a pair of the absorbent main body provided on both sides in the lateral direction A leak-proof wall, and an outer layer sheet provided on the non-skin side of the absorbent main body, wherein the liquid absorbent absorbent pad is removable on the skin side in the thickness direction of the absorbent main body, and the pair The leak-proof wall has a joint portion in which the surfaces on one side in the thickness direction are joined to each other at a position where the lateral length of the outer layer sheet in the longitudinal direction is minimized. The lateral direction of the absorbent main body at the minimum position when the absorbent main body and the leakage barrier are elongated so that the length of the absorbent main body and the leakage barrier is maximized The width of the leak-proof wall, and The absorbent pad when the absorbent pad is extended such that the sum of the sum of the end of the direction and the distance between the junction and the length of the absorbent pad in the lateral direction is maximized The absorbent pad is larger than the sum of the width of the absorbent pad and twice the thickness of the absorbent pad at the minimum position when inserted into the pants-type disposable diaper A pants-type disposable diaper having a portion in which a distance between inner ends in the lateral direction of the pair of joint portions is narrower than a width of the lateral direction of the absorbent pad is inserted into a wearer. And the absorbent pad is disposed between the crotch of the wearer, and the absorbent main body overlaps the non-skin side of the absorbent pad disposed. And an absorbent pad inserting step of inserting the absorbent pad into the underpants-type disposable diaper, and wearing the underpants-type disposable diaper on the wearer. The method becomes clear.

According to such a pants-type disposable diaper wearing method, it is easy to adjust the position of the absorbent pad with respect to the position of the wearer's body such as the excretion opening, and excrement may leak from the absorbent pad when the diaper is worn Be suppressed. In addition, since the absorbent pad can be inserted into the diaper without interference between the leak-proof wall provided in the absorbent main body and the absorbent pad, the absorbent pad can be easily inserted, which is favorable when the diaper is worn Fit is secured.

In the pants-type disposable diaper mounting method, the absorbent pad has a pair of absorbent pad leakproof walls on both sides in the lateral direction, and in the minimum position, the absorbent pad leaks the pair of absorbent pad leakproof walls. It is desirable that the distance in the lateral direction is narrower than the distance between the inner ends in the lateral direction of the pair of joints.

According to such a pants-type disposable diaper mounting method, since the leak-proof wall of the absorption pad is erected and disposed between the pair of leak-proof walls provided in the absorbent main body, double in the lateral direction It becomes arrangement where a leak-proof wall is provided. Thereby, it becomes easy to control that excrement leaks out of the underpants type disposable diaper. In addition, the absorbent main leakage barrier located on both sides of the leakage barrier of the absorption pad prevents the leakage barrier of the absorption pad from spreading excessively outward in the lateral direction, and the misalignment of the leakage barrier is also achieved. It becomes difficult to occur. This ensures good fit.

In the pants-type disposable diaper mounting method, a plurality of leak-barrier elastic members that extend and contract in the longitudinal direction are provided in the lateral direction on the leak-barrier wall, and the joint portion in the lateral direction is provided. It is desirable that the number of the leakproof wall elastic members disposed outside of the joint is larger than the number of the leakproof wall elastic members disposed inside of the joint.

According to such a pants-type disposable diaper mounting method, by arranging a large number of elastic members in the region where the rigidity on the outer side in the lateral direction is lower than that of the junction in the leakproof wall, the region corresponds to the unevenness of the wearer. The curved surface is easily formed, and the fit to the skin of the wearer is improved. Further, by providing a plurality of elastic members, it is difficult to concentrate the contraction force (pressure) acting on the leak-proof wall in one place, and it is possible to suppress the deterioration of the wearing comfort of the underpants type disposable diaper.

In the pants-type disposable diaper mounting method, in the lateral direction, the joining is performed in the lateral direction more than the lateral intervals of the plurality of the leak-barrier elastic members disposed outside the joining portion. Among the leak-barrier elastic members disposed on the inner side than the portion, the leak-barrier elastic member located on the outermost side and the leak-barrier elastic member located on the outer side than the joint portion are the most. It is desirable that the lateral distance between the inner side and the leakproof wall elastic member be wider.

According to such a pants-type disposable diaper mounting method, when the absorbent pad is inserted into the diaper, the leakage-barrier elastic member inside the joint and the leakage-bar elastic member outside the joint Since the distance is wide, it is easy to hook the finger to the wide portion to draw out the leak-barrier wall (joint) to the skin side of the absorbent pad. Thereby, it becomes easy to insert an absorption pad correctly, and the leak etc. of excretion are suppressed.

In such a pants-type disposable diaper mounting method, the absorbent pad has a liquid absorbent pad absorber, and the length of the pad absorber is maximized in the lateral direction at the minimum position. Thus, the width of the pad absorber when the pad absorber is stretched is the width of the absorber when the absorber is stretched so that the length of the absorber becomes maximum in the lateral direction. It is desirable to be wider than the width.

According to such a pants-type disposable diaper wearing method, it is possible to increase the absorption capacity of excrement and the like compared to the case of using a pants-type disposable diaper without using a pad absorbent, and diaper replacement Interval can be made longer. In addition, the absorbent main body has a structure in which it is difficult for the absorbent main body to sag downward due to the joint portion provided in the leak-proof wall, so that the pad absorber is located downward even if it is absorbed when excrement is absorbed. Less likely to sag, less likely to deteriorate fit.

In the pants-type disposable diaper mounting method, the pad absorbent body has a narrow portion having the narrowest width in the lateral direction in a region between both ends of the absorbent pad in the longitudinal direction. It is desirable that the joint portion and the narrow portion overlap in the longitudinal direction, and the length of the joint portion in the longitudinal direction is longer than the length of the narrow portion in the longitudinal direction.

According to such a pants-type disposable diaper wearing method, it is possible to hold the absorbent pad firmly between the joints of the leakproof wall in the area where the narrow part is formed in the crotch of the wearer In addition, displacement of the absorbent pad is less likely to occur and leakage of excrement is less likely to occur. Furthermore, when the absorbent pad is inserted, the absorbent pad can be firmly inserted into the diaper even if the positional deviation in the longitudinal direction occurs between the absorbent pad and the diaper.

In the pants-type disposable diaper mounting method, the absorber has a constriction portion between both ends of the absorber in the longitudinal direction, and the pair of bonding portions is the absorber in the thickness direction. It is preferable that the distance between the pair of joint portions in the lateral direction is shorter than the length at both longitudinal ends of the absorber.

According to such a pants-type disposable diaper mounting method, the junction is formed in the area within the constriction of the absorbent body, and the junction in the region causes the leak-proof wall to be folded over and the rise height of the leak-proof wall Can be made too expensive. In addition, since the joint portion does not overlap with the absorber, the joint portion with high rigidity is less likely to be pressed against the body (skin side) of the wearer when worn, and the deterioration of the touch when wearing the diaper can be suppressed.

=== Embodiments ===
<Basic Configuration of Diaper 1>
A basic configuration of a pants-type disposable diaper 1 (hereinafter, also referred to as "diaper 1") will be described as an example of the absorbent article to be handled in the present embodiment. FIG. 1 is a plan view of the diaper 1 in the unfolded and stretched state. FIG. 2 is a schematic perspective view of the diaper 1 as viewed from the ventral side. 3A is a schematic cross-sectional view taken along the line AA in FIG. 1, FIG. 3B is a schematic cross-sectional view taken along the line BB in FIG. 1A, and FIG. 3C is a schematic cross-sectional view taken along the line CC in FIG. . In addition, the "extended state" in FIG. 1 is a state in which the product (diaper 1) is stretched without any problems, specifically, the dimensions of each member (for example, back sheet 30 etc. described later) constituting the diaper 1 are It refers to a state of being stretched to a length that matches or approximates to the dimensions of the member itself.

This diaper 1 has a longitudinal direction, a lateral direction and a longitudinal direction as three directions orthogonal to each other in the pants-type state of FIG. And in the following, the one side and the other side in the vertical direction in the pants-type state are also referred to as the “trunk opening side” and the “crotch side”, respectively, and the front side and the rear side in the front and rear direction Also referred to as "ventral side" and "back side".

On the other hand, in the unfolded state of FIG. 1, the diaper 1 has a longitudinal direction and a width direction as three directions orthogonal to each other. And below, the thing of the one side and the other side of the longitudinal direction in this deployment state is also called "ventral side" and "back side", respectively. The above-mentioned width direction in the unfolded state is the same direction as the above-mentioned lateral direction in the pants-type state. Therefore, in the following, the width direction is also referred to as "lateral direction". Further, the longitudinal direction of the unfolded state is a direction along the longitudinal direction of the pant type state. In addition, as shown in FIG. 3, the direction perpendicular to the longitudinal direction (longitudinal direction) and the lateral direction (width direction) is referred to as “thickness direction”, and the side in contact with the skin of the person to be worn is referred to as “skin side” The other side is called "non-skin side".

Further, as shown in FIG. 1, the diaper 1 has a ventral waist portion 3, a back waist portion 4 and a crotch portion 5 in the longitudinal direction. The ventral torso portion 3 is a portion located on the ventral side of the wearer when the diaper 1 is worn. The back waistline portion 4 is a portion positioned on the back side of the wearer when the diaper 1 is worn. A crotch 5 is provided between the ventral waist part 3 and the back waist part 4.

Diaper 1 of this embodiment has absorptive main part 10, top sheet 20, back sheet 30, and leak-proof wall 50. Then, from the unfolded state of FIG. 1, the absorbent main body 10 is folded in half with the predetermined position CL10 in the longitudinal direction (longitudinal direction) of the absorbent main body 10 as a folding position, and the belly facing each other in this folded state When the side waist portion 3 and the back side waist portion 4 are joined by welding or the like at the abdominal side edge portion 3es and the back side edge portion 4es, these

waist portions

3 and 4 are annularly connected to each other. It becomes the diaper 1 of the pants type state in which the waist-surrounding opening BH and a pair of leg-surrounding openings LH and LH as shown in FIG. 2 are formed.

The absorbent main body 10 has a function of absorbing excrement such as urine, and as shown in FIG. 1, has a substantially rectangular shape in a plan view, and the center in the horizontal direction while aligning its longitudinal direction with the longitudinal direction of the diaper 1. Is located in The absorbent main body 10 has a liquid absorbent absorbent body (absorbent core) 11 and a core wrap sheet 12 which covers the outer peripheral surface of the absorbent body 11. Further, leak preventing walls 50 are provided on both sides in the lateral direction of the absorbent main body 10. The details of the leakproof wall 50 will be described later.

The absorbent body 11 is a liquid absorbent fiber such as pulp fiber molded into a predetermined shape, and a superabsorbent polymer (so-called SAP) or the like is mixed therein. In the present embodiment, the absorbent body 11 has a generally hourglass shape in plan view, and the central portion in the longitudinal direction has a constricted portion 11 c recessed inward in the lateral direction. That is, the absorber 11 has a constricted portion 11c having a smaller dimension in the lateral direction than the longitudinal direction end portions 11ea and 11eb of the absorber 11 at a position between the longitudinal direction end portions 11ea and 11eb. The core wrap sheet 12 is a liquid-permeable sheet member that covers the outer peripheral surface of the absorber 11, and tissue paper, non-woven fabric, and the like can be used.

The top sheet 20 is a liquid-permeable sheet member (inner layer sheet) that is disposed on the skin side surface in the thickness direction of the absorbent main body 10 and that contacts the skin of the wearer when the diaper 1 is worn. The top sheet 20 of the present embodiment is formed of, for example, an air through nonwoven fabric, a spunbond nonwoven fabric, or the like.

The back sheet 30 is a sheet member (outer layer sheet) which is disposed on the non-skin side in the thickness direction of the absorbent main body 10 and constitutes the outer layer of the diaper 1. In the present embodiment, the back sheet 30 has a back film 31, an upper outer layer sheet 32 and a lower outer layer sheet 33. The back film 31 is a liquid impermeable and moisture permeable sheet member disposed on the non-skin side of the absorbent main body 10, and is formed of, for example, a resin film. By the back film 31 being provided, it is suppressed that water | moisture content, such as urine absorbed by the absorptive main body 10 move to the clothes side of a wearer (penetration).

The upper outer layer sheet 32 and the lower outer layer sheet 33 are flexible sheet-like members disposed on the non-skin side of the back film 31 while being overlapped in the thickness direction, and are formed of, for example, a spunbond nonwoven fabric. The upper outer layer sheet 32 and the lower outer layer sheet 33 have the same shape at least in the ventral waist portion 3 and the back waist portion 4, and have a generally hourglass shape as shown in FIG. 1 as a whole. That is, the back sheet 30 has a narrow portion 30 c in which the central portion (the crotch 5) in the longitudinal direction is recessed in the lateral direction between the ventral waist portion 3 and the back waist portion 4.

Further, in the diaper 1, the end 30 eа on the longitudinal side of the back sheet 30 is folded back to the inside in the longitudinal direction, and a part of the folded end 30 eа is the skin of the absorbent main body 10 and the leakproof wall 50 The ventral-side folded portion 30fa is formed to be overlapped and joined to the side. Similarly, a longitudinal back end 30eb of the back sheet 30 is folded back inward in the longitudinal direction, and a part of the folded back end 30eb is on the skin side of the absorbent main body 10 and the leakproof wall 50. A back side folded portion 30fb is formed to be overlapped and joined.

In addition, an elastic member such as thread rubber is provided between the upper outer layer sheet 32 and the lower outer layer sheet 33 in the thickness direction. In the present embodiment, as shown in FIG. 1, in the belly-side waist portion 3 (the region between the belly-side side edge portions 3 es and 3 es) of the diaper 1, the plurality of belly-side waist elastic members 35 a have a predetermined elongation ratio The upper outer layer sheet 32 and the lower outer layer sheet 33 are sandwiched and joined in a state of being laterally extended. The ventral waistline elastic member 35 a imparts lateral stretchability to the ventral waistline portion 3 of the diaper 1. Similarly, in the back waistline 4 of the diaper 1 (the region between the back side edge portions 4es and 4es), the plurality of back waist elastic members 35b are stretched in the lateral direction at a predetermined stretching ratio, and the upper side is It is joined between the outer layer sheet 32 and the lower outer layer sheet 33. The back waistline elastic member 35 b imparts horizontal stretchability to the back waistline 4 of the diaper 1.

The "expansion magnification" of the elastic member indicates the degree of elongation when the natural length of the elastic member (thread rubber) is 1, and for example, when the expansion magnification is 1.2, the elastic member is natural. It will be extended by 0.2 from the length.

In addition, the back waistline portion 4 is provided with a plurality of back leg elastic members 35lg. The back leg elastic member 35 lg is arranged to be curved along the constricted portion 30 c from a region (a position closer to the center in the longitudinal direction of the absorber 11) in the longitudinal direction of the back waist 4. Specifically, as shown in FIG. 1, the back leg leg elastic member 35 lg is a straight portion disposed along the lateral direction in the lateral central portion (the region where the absorber 11 is disposed). And 35lgs, and a curved portion 35lgc which is disposed so as to be curved obliquely upward toward the outside in the lateral direction from both sides in the lateral direction of the straight portion 35lgs. The straight portion 35lgs and the curved portion 35lgc are joined between the upper outer layer sheet 32 and the lower outer layer sheet 33 in a state of being stretched at different stretching ratios.

In the present embodiment, the back leg elastic member 35lg is disposed such that the expansion ratio of the straight portion 35lgs is lower than the expansion ratio of the back waist elastic member 35b. Since the straight portion 35lgs has a portion overlapping the absorber 11 (the absorbent main body 10) at the central portion in the lateral direction, the absorber 11 is excessively contracted in the lateral direction by lowering the expansion ratio. Can be suppressed. The expansion ratio may be different depending on the position of the straight portion 35lgs in the lateral direction. For example, the expansion ratio at the center in the horizontal direction of the straight portions 35lgs may be lower than the expansion ratio at both ends in the horizontal direction. Thereby, a gradient is generated in the stress in the straight portion 35lgs, and the contraction of the absorber 11 can be suppressed without impairing the fit.

On the other hand, the extension ratio of the curved portion 35lgc is arranged to be higher than the extension ratio of the back waistline elastic member 35b. The curved portion 35lgc is disposed along the constricted portion 30c on the back side of the diaper 1, but this region abuts on the buttocks of the wearer when the diaper 1 is worn, and the wearer shifts the position by moving the legs. Part is apt to occur. Therefore, by increasing the expansion ratio of the curved portion 35lgc, the contraction force is increased to make it difficult to cause positional deviation. In addition, since the contraction amount of the back sheet 30 becomes large in the vicinity of the leg opening LH, the back sheet 30 is easily deformed into a shape along the roundness of the buttocks of the wearer, and the fit can be enhanced. As in the case of the linear portion 35lgs, the expansion ratio may be different in the lateral direction of the curved portion 35lgc. For example, in the curved portion 35lgc, the extension ratio may be higher on the outer side than on the inner side in the lateral direction.

<About Leakage Barrier 50>
Next, the leak barrier 50 will be described. Leakproof wall 50 is disposed along the longitudinal direction of absorbent main body 10 (longitudinal direction of diaper 1) on both sides in the lateral direction of absorbent main body 10, and from the side end of absorbent main body 10 when diaper 1 is worn Standing up, it controls that excrement leaks to the outside of diaper 1. FIG. 4 is a plan view of the leak-barrier 50 in a deployed and extended state. FIG. 5 is a schematic cross-sectional view showing the region D of FIG. 3C in an enlarged manner. In FIG. 5, for convenience of explanation, the scale in the thickness direction is shown deformed.

The leak-proof wall 50 is formed by folding a rectangular sheet member 50s as shown in FIG. 4 in the lateral direction along fold lines f1 to f3 along the longitudinal direction (longitudinal direction). As the sheet member 50s forming the leak-proof wall 50, for example, a flexible sheet member such as a non-woven fabric can be used. Further, the leak preventing wall 50 is provided with a plurality of leak preventing wall elastic members 55 such as thread rubber which can be expanded and contracted in the longitudinal direction. In the example of FIG. 4, six leakage preventing wall elastic members 551 to 556 extending in the longitudinal direction are arranged side by side from the outside in the lateral direction to the inside. The leak preventing wall elastic members 551 to 556 are joined to the leak preventing wall 50 in a state of being stretched in the longitudinal direction at a predetermined stretching ratio. Elasticity along the longitudinal direction is imparted to the leakproof wall 50 by the leakproof wall elastic member 55, and the leakproof wall 50 is erected when the diaper 1 is worn.

The leakproof wall elastic member 55 exhibits elasticity in the range indicated by the broken line in FIGS. 1 and 4. In addition, the leak-proof wall elastic member 55 which does not express elasticity may exist in the area | region of a longitudinal direction (longitudinal direction) outer side rather than the range shown with the broken line in FIG.1 and FIG.4. Further, the number of the leakproof wall elastic members 55 and the arrangement thereof are not limited to those shown in FIG. 4 and can be appropriately changed according to the use of the diaper 1.

In the unfolded state shown in FIG. 4, the lateral inner end 50 ei of the leak-proof wall 50 (sheet member 50 s) is joined between the absorbent main body 10 and the back film 31 (back sheet 30) in the thickness direction.・ It is fixed. On the other hand, the lateral outer end 50 eо of the leak-proof wall 50 (sheet member 50 s) protrudes laterally outward of the absorbent main body 10. In this state, the outer end 50eо is bent inward in the lateral direction with the bending line f1 as a base point, and the sheet members 50s are overlapped in the thickness direction with the leak preventing wall elastic members 551 to 556 interposed therebetween. Bonded to each other. Of the leakage preventing wall elastic members 55 provided in a plurality in the lateral direction, the outermost elastic member (the leakage preventing wall elastic member 551 in FIG. 4) is disposed in line with the lateral position of the bending line f1. It is done.

Subsequently, the sheet member 50s is bent on the non-skin side in the thickness direction and inward in the lateral direction with the bending line f2 as a base point. The lateral position of the bending line f2 is substantially the same as the lateral position of the leak-barrier elastic member 555. Subsequently, the sheet member 50s is bent on the skin side in the thickness direction and inward in the lateral direction with the bending line f3 as a base point. Thereby, the leakproof wall 50 bent in a substantially S shape as shown in FIG. 3 and FIG. 5 is formed. In addition, in the case of FIG. 5, the position of the bending line f3 becomes the base 50rp at the time of making the leak-proof wall 50 stand up.

In the leak-proof wall 50, the top surface portion 51 is formed on the most skin side in the thickness direction by folding the sheet member 50s from one side to the other side in the lateral direction. The top surface portion 51 is a region having a predetermined width in the lateral direction between the bending line f 1 and the bending line f 2, and the top surface portion 51 is provided with leakage preventing wall elastic members 551 to 555. Further, a lower surface 52 is formed on the non-skin side in the thickness direction of the top surface 51. The lower surface portion 52 is a region having a predetermined width in the lateral direction between the bending line f2 and the bending line f3, and the lower surface portion 52 is provided with leakage preventing wall elastic members 555 to 556. Since the leakage preventing wall elastic member 555 is disposed at substantially the same position as the bending line f2 in the lateral direction as described above, it is provided on both the top surface 51 and the lower surface 52.

Then, in the leak-proof wall 50, a partial region of the top surface portion 51 and the lower surface portion 52 is joined in the thickness direction via the inward joint portion 61. That is, the surfaces on one side of the leakage preventing wall 50 (sheet member 50s) in the thickness direction are joined together by the inward joint portion 61. Hereinafter, a region on the inner side in the lateral direction of the portion where the inward joint portion 61 is formed in the leakproof wall 50 is also referred to as an inward portion 53. In the present embodiment, in the region on the inner side in the lateral direction of the top surface portion 51 (lower surface portion 52), a fold-in joint portion 61 shown by the hatched portion in FIG. 5 is provided, and a fold-in portion 53 is formed. The inward joint portion 61 is formed using an adhesive means using an adhesive such as a hot melt adhesive or a pressure bonding means such as embossing. The folding joint 61 does not have to be formed over the entire lateral direction of the folding portion 53 as shown in FIG. 5, and, for example, folding is performed at the inner end in the lateral direction (the position of the folding line f2 in FIG. 5). The bonding portion 61 may not be formed. On the other hand, the top surface 51 and the lower surface 52 are not joined in the lateral outside region where the in-folding joint 61 is not provided, and both can be separated in the thickness direction. Hereinafter, the outer side in the lateral direction of the portion of the top surface 51 provided with the inward joint 61 is also referred to as a single layer 54. In addition, "a single layer" said here means that it is a layer which consists only of the top | upper surface part 51, and the top | upper surface part 51 itself may be a multilayer structure like FIG.

In the region on the outer side in the longitudinal direction of the inward joint 61, the inward joint 61 is not provided. That is, in the region on one side and the other side of the leakage preventing wall 50 in the longitudinal direction on the one side and the other side of the inward joint portion 61, the surfaces on one side in the thickness direction of the leakage preventing wall 50 (sheet member 50s) are It has a non-joined portion 62 which is not joined. In this non-joining portion 62, as shown in FIG. 3B, since the top surface portion 51 and the lower surface portion 52 of the leakproof wall 50 are not joined, the fold-in portion 53 is not formed. The entire area is a single layer part. In FIG. 1, the non-joining portions 62 are provided on both sides in the longitudinal direction of the in-folding joint 61, but the non-joining portions 62 may be provided only on one side in the longitudinal direction.

Further, end joint portions 63 are provided at both end portions in the longitudinal direction of the leak-proof wall 50. In the end joint portion 63, as shown by the hatched portion in FIG. 3A, the top surface portion 51 and the lower surface portion 52 of the leakproof wall 50 are joined, and the lower surface portion 52 and the top sheet 20 are joined. Thereby, the top surface portion 51 and the lower surface portion 52 are fixed to the skin side surface of the top sheet 20 at the end portion in the longitudinal direction of the leak preventing wall 50. In addition, as shown in FIG. 1, the end joint portion 63 is disposed laterally outside the inward joint portion 61, which causes the lateral outer end portion of the top surface portion 51 to curl up. Be suppressed.

In the diaper 1 of the present embodiment, the leak-proof wall 50 has the above-described substantially S-shaped bent structure (refer to FIG. 5), so that it is difficult for the wearer to feel discomfort even when excretion is performed. While being, it can control that a crevice arises in a crotch part. Drawing 6A is a figure explaining the wearing condition of diaper 1 before excretion is performed. Drawing 6B is a figure explaining the wearing condition of diaper 1 after excretion is performed.

In the wearing state of the diaper 1 shown by FIG. 6A, the top surface part 51 arrange | positioned at the skin side among the leak-proof walls 50 contact | abuts with a wearer's body. That is, the entire top surface portion 51 is disposed in surface contact with the body of the wearer. The rigidity of the fold-in portion 53 of the top surface portion 51 is increased by being joined by the fold-in joint portion 61 in a state where the top surface portion 51 and the lower surface portion 52 are stacked. Therefore, when the contraction force by the leakage preventing wall

elastic members

555 and 556 acts on the inward portion 53, the inward portion 53 is firmly pressed against the body of the wearer while maintaining the surface shape. At this time, the distance between the pair of leakproof walls 50 in the lateral direction (the distance between the folded

portions

53, 53 in the lateral direction) is W50. On the other hand, in the single-layer portion 54 on the outer side in the lateral direction than the in-folding joint portion 61 of the top surface portion 51, more leak-barrier elastic members 551 to 554 are provided in the lateral direction inward than the in-folding joint portion 61. There is. The single-layer portion 54 is lower in rigidity than the indented portion 53 and thus easily deformed. Therefore, when contraction force is applied by the leak-barrier elastic members 551 to 554 disposed in the single layer portion 54, the single layer portion 54 is pressed against the skin side of the wearer while forming a curved surface according to the unevenness of the body. Be In addition, the plurality of leak preventing wall elastic members 551 to 554 effectively prevent the single layer portion 54 from being twisted or the like.

As a result, the entire top surface portion 51 of the leak-barrier wall 50 can be fitted to the wearer's body in a sharp manner. Further, since the top surface portion 51 is in surface contact with the body of the wearer, the contraction force by the plurality of leak preventing wall elastic members 551 to 556 is dispersed, and the surface pressure acting on the wearer's skin as the entire top surface portion 51 I'm getting bigger. Therefore, local pressure increase is suppressed as compared with the case where the contraction force by the plurality of leak-barrier elastic members 551 to 556 (for example, thread rubber) individually acts on the wearer's skin And the deterioration of the comfort of the diaper 1 is suppressed, and the skin of the wearer is less likely to be damaged.

In the present embodiment, at least one leakage preventing wall elastic member 556 is provided on the lower surface portion 52 of the folding portion 53 (see FIG. 5). Since the lower wall portion 52 and the upper surface portion 51 are simultaneously pushed up to the skin of the wearer by the contraction of the leak-barrier elastic member 556, the fold portion 53 contacts the skin of the wearer while maintaining the surface shape. (Face contact) becomes easy.

At that time, it is desirable that the leakage preventing wall elastic member 556 be disposed at the same position as the inward joint portion 61 or inside the inward joint portion 61 in the lateral direction. If the leakproof wall elastic member 556 is disposed laterally outside the fold joint portion 61, the stretch force by the leakproof wall elastic member 556 substantially does not act on the fold portion 53, so It becomes difficult to push up the portion 53 to the skin side of the wearer while maintaining the surface shape. On the other hand, if the leakage preventing wall elastic member 556 is disposed below or inside the folding joint 61, the elastic force by the leakage preventing wall elastic member 556 is inserted through the folding joint 61 into Because it works in a wide range, it makes it easier for the fold 53 to make surface contact with the wearer's skin

In the state shown in FIG. 6A, when the diaper 1 is excreted, the absorber 11 absorbs urine and the like to increase its weight, and tries to move so as to hang downward. However, in the diaper 1 of the present embodiment, the contraction force of the plurality of elastic members provided in the folding portion 53 and the single layer portion 54 generates a force that pushes the top surface portion 51 upward (skin side of the wearer). The resistance increase against the force by which the leak-barrier 50 is pulled downward by the increase in the reception of the absorber 11 is obtained. Further, since the top surface portion 51 is in surface contact with the skin of the wearer, the friction on the contact surface is large, and displacement of the top surface portion 51 hardly occurs. Therefore, the horizontal distance W50 between the pair of leak preventing walls 50 does not easily change before and after the excretion. From these things, the state where the top surface portion 51 of the leakproof wall 50 abuts on the wearer's skin as shown in FIG. 6B is easily maintained, and problems such as the formation of gaps in the leg around the diaper 1 are less likely to occur. .

The drooping of the absorber 11 is more likely to occur as the rising portion of the leak-proof wall 50 is higher. That is, as shown in FIG. 6B, the longer the distance L2 from the lateral outer end of the absorber 11 to the portion where the leakproof wall 50 abuts on the wearer's skin, the absorber 11 tends to sag downward. Become. In this regard, in the leak-proof wall 50 of the diaper 1, the distance L2 is relatively shortened due to the formation of the indented portion 53. That is, by folding up a part of the leak-proof wall 50 by the fold-in portion 53, by lowering the rising portion of the leak-proof wall 50, it is suppressed that the absorber 11 largely hangs downward, and the wearer is not It can be hard to give pleasure.

Further, as shown in FIG. 1, the inward joint portion 61 (indented portion 53) is formed in the region of the constricted portion 11 c of the absorber 11 in the longitudinal direction. In other words, the pair of inward joint portions 61 formed on both sides in the lateral direction do not overlap with the absorber 11 in the thickness direction, and the distance between the pair of inward joint portions 61 in the lateral direction is It is narrower than the length (width) of the longitudinal direction both ends in the transverse direction. In the region of the absorber 11 where the constricted portion 11c is formed, the distance from the lateral end of the absorber 11 to the rising base 50rp of the leakproof wall 50 is long (see FIG. 5), and accordingly the absorber 11 Drooping of the Therefore, by providing the inward joint portion 61 in the leakproof wall 50 in the region, and folding the leakproof wall 50 in the inward portion 53, the distance L2 can be made as short as possible, and the sag of the absorber 11 can be effectively suppressed. It is like that. Furthermore, by forming the inward joint portion 61 so as not to overlap with the absorber 11 in the thickness direction, the portion of the leakproof wall 50 whose rigidity is increased by the inward joint portion 61 is worn by the absorber 11 It is suppressed that it is pressed against the person's body (skin side). Thereby, the deterioration of the touch at the time of diaper 1 wear can be suppressed.

<About the absorbent pad>
The diaper 1 of the present embodiment can be used with a liquid absorbent absorbent pad 100. The absorbent pad 100 has a function of absorbing excrement such as urine, and is detachably inserted into the skin side of the absorbent main body 10 of the diaper 1. FIG. 7 is a plan view of the absorbent pad 100 in a deployed and extended state. FIG. 8A is a schematic cross-sectional view taken along the line EE in FIG. FIG. 8B is a schematic cross-sectional view along the line FF in FIG. Note that each direction (lateral direction or the like) in FIGS. 7, 8A, and 8B corresponds to each direction in FIGS. 1 and 3.

As shown in FIG. 7, the absorbent pad 100 to be inserted into the diaper 1 has a substantially gourd-shaped shape in which the width in the lateral direction is narrowed at both end portions in the longitudinal direction and one end and the other end in the longitudinal direction. Have. The absorbent pad 100 includes a pad absorbent body 110, a top sheet 120, a back sheet 130, and an absorbent pad leakproof wall 150. The respective members are disposed so as to overlap in the thickness direction as shown in FIG. 8, and are joined to each other using a hot melt adhesive or other joining means in a region shown by hatching.

The pad absorbent 110 is a liquid absorbent fiber such as pulp fiber molded into a predetermined shape, and a super absorbent polymer (so-called SAP) or the like is mixed therein, and liquid such as urine (excrement Absorb and hold). As shown in FIG. 7, the planar shape of the pad absorbent 110 is substantially the shape of a gourd similar to the absorbent pad 100. That is, the ventral wide portion 110lа with the widest lateral width on the ventral side (and the dorsal side) in the longitudinal direction and the dorsal wide portion 110lb with the widest lateral width on the dorsal side in the longitudinal direction And a narrow portion 110s having the narrowest width in the lateral direction between the ventral wide portion 110La and the dorsal wide portion 110lb (that is, between the longitudinal ends of the pad absorbent 110). The narrow portion 110s is provided in a region on the ventral side of the central position CL100 in the longitudinal direction, and is a portion that contacts the groin of the wearer when the pad absorber 110 is worn (used). Therefore, by narrowing the width of the region, the movement of the leg of the wearer is less likely to be impeded when worn, and it is possible to suppress that the pad absorbent body 110 is eaten by the wearer's skin. In the present embodiment, the lateral width W110l of the wide portions 110lа and 110lb is about 220 mm, and the lateral width W110s of the narrow portion 110s is about 150 mm.

A slit 111 penetrating the pad absorber 110 in the thickness direction is provided along the longitudinal direction at the lateral center of the narrow portion 110s. Since the pad absorber 110 has low rigidity at the portion of the slit 111, it is easy to be deformed according to the body shape of the wearer when the absorbent pad 100 is worn. Moreover, the pad absorber 110 is coat | covered with the outer peripheral surface by the core wrap sheet | seat 112 (for example, tissue) similarly to the absorber 11 of the diapar 1. FIG. In addition, the pad absorber 110 may have a two-layer structure in the thickness direction. That is, as shown in FIG. 8, the second pad absorber 115 may be provided to overlap in the thickness direction of the pad absorber 110. However, the core wrap sheet 112 and the second pad absorber 115 may not necessarily be provided.

The top sheet 120 is a liquid-permeable sheet member that is disposed on the skin side surface in the thickness direction of the pad absorbent body 110 and that contacts the skin of the wearer when the absorbent pad 100 is worn. The top sheet 120 is formed of, for example, an air through nonwoven fabric, a spunbond nonwoven fabric, or the like. The back sheet 130 is a sheet member disposed on the non-skin side of the pad absorbent 110 in the thickness direction. The back sheet 130 has a back film 131 and an outer layer sheet 132. The back film 131 is a liquid impermeable and moisture permeable sheet member disposed on the non-skin side of the pad absorber 110, and is formed of, for example, a resin film. The outer layer sheet 132 is a flexible sheet-like member disposed on the non-skin side of the back film 131 while being overlapped in the thickness direction, and is formed of, for example, a spunbond nonwoven fabric or the like.

In the back sheet 130, the width in the lateral direction of the back film 131 may be narrower than the width in the lateral direction of the outer layer sheet 132 (see FIGS. 8A and 8B). With such a configuration, the number of stacked materials at the laterally outer end 130eо of the outer layer sheet 132 can be reduced, and the rigidity of the outer end 130e can be reduced. The outer end portion 130eо is a portion to be the end portion 100se of the absorbent pad 100 in the lateral direction, and is inserted into the space SP50 formed between the leakproof walls 50 when inserted into the diaper 1 as described later. Part of the Therefore, by making the rigidity of the outer end portion 130eо low and making it easy to deform, the absorption pad 100 is less likely to interfere with the leak-proof wall 50, and the work of inserting into the diaper 1 becomes easy.

A pair of absorbent pad leakproof walls 150 are provided on both lateral sides of the skin side of the pad absorbent 110. Absorbent pad leakproof wall 150 is arranged such that at least a partial area including lateral inner end 150 ei overlaps the skin side surface of top sheet 120 in the thickness direction. And as FIG. 8A shows, it is joined with the top sheet 120 in the horizontal direction both ends of the top sheet 120 through the junction part 155 formed with the hot-melt-adhesive etc. Further, in the regions on both outer sides in the lateral direction of the pad absorbent body 110, it is joined to the back sheet 130 (back film 131) via joining portions 156 formed of a hot melt adhesive or the like. An absorbent pad elastic member 151 is joined to the lateral inner end 150 ei of the absorbent pad leak-barrier wall 150 in a state in which the absorbent pad elastic member 151 is stretched in a longitudinal direction at a predetermined stretching ratio. When the absorbent pad 100 is worn, the absorbent pad leak-barrier wall 150 is erected on the skin side in the thickness direction from both lateral ends of the pad absorbent body 110 with the bonding portion 155 as a base point by the contraction force of the absorbent pad elastic member 151. As a result, leakage of excrement to the outside in the lateral direction of the absorbent pad 100 is suppressed.

On the other hand, as shown in FIGS. 7 and 8B, in the end region in the longitudinal direction, the vicinity of the laterally inner end 150ei of the absorbent pad leak-proof wall 150 is a joint 157 formed by a hot melt adhesive or the like. And the top sheet 120. Therefore, when the absorbent pad 100 is worn, the absorbent pad leakproof wall 150 does not stand up in the thickness direction in the longitudinal end region.

<About wearing of diaper 1>
The mounting method of the diaper 1 at the time of using the absorption pad 100 is demonstrated. FIG. 9 is a view for explaining the mounting operation of the diaper 1.

When using the absorption pad 100 in the diaper 1 of this embodiment, first, only the absorption pad 100 is arrange | positioned between a crotch of a wearer (absorption pad arrangement | positioning process). FIG. 9A shows a state in which the absorbent pad 100 is placed between the crotch of the wearer. By arranging the absorbent pad 100 directly on the wearer's body, it is easy to adjust the position of the absorbent pad 100 with respect to the position of the excretory opening, and in the operation of arranging the absorbent pad 100, the absorbent pad 100 is twisted or curled. Even if something happens, you can fix it immediately. Thereby, it is suppressed that the excrement leaks from absorption pad 100 at the time of wearing of diaper 1.

Also, among those who are active in wheelchairs, there are those who have difficulty in controlling urination by themselves. In such a case, in the conventional diaper, urine leakage may occur during the operation of attaching and detaching the diaper, and urine may adhere to clothes and the like. On the other hand, if the absorbent pad 100 can be disposed directly at the position of the excretory port as in the present embodiment, it is possible to suppress the problem that urine etc. leaks to the clothes side when the diaper 1 is attached or detached. it can.

Then, a wearer is made to wear the diaper 1 so that the absorptive main body 10 may overlap with the non-skin side of the absorption pad 100 of the state arrange | positioned at a wearer's body (wear process). FIG. 9B shows a state in which the wearer wears the diaper 1. In the present wearing step, the diaper 1 can be worn by the wearer in the same manner as the operation of putting on the conventional pants-type diaper while preventing the position of the absorbent pad 100 from shifting. If the wearer wears the diaper 1 after attaching the absorbent pad 100 to the diaper 1, temporary excretory such as residual urine may occur during a few seconds until the waist is pulled up. Not only the pads but also the clothes or the area around the replacement area may be soiled. In addition, the thickness of the absorbent main body 10 of the diaper 1 and the thickness of the absorbent pad 100 may cause the diaper 1 to be in a squeezed state, which may make it difficult to fit the diaper 1 to the wearer's body. Further, in the operation of putting on the diaper 1, the position of the absorbent pad 100 may be displaced with respect to the position of the excretory port, and there is a possibility that excrement easily leaks from the absorbent pad 100 and the absorbent main body 10.

On the other hand, according to the wearing method of the present embodiment, the diaper 1 can be easily fitted to the body of the wearer, and the displacement of the absorbent pad 100 can be suppressed to make the leakage less likely to occur. Moreover, since it becomes difficult to produce position shift at the time of making the diaper 1 wear, as mentioned above, the top surface 51 of the leak-proof wall 50 becomes easy to fit snugly on the wearer's body, and the diaper 1 is worn The fit is further improved. Further, as described later, the diaper 1 and the leak-proof wall 50 of the present embodiment have a structure that allows the absorbent pad 100 to be easily inserted even when the diaper 1 is worn by the wearer. It is suitable for the present mounting method.

Then, the absorption pad 100 is inserted in the skin side of the absorptive main body 10 of the diaper 1 (insertion process). Here, “inserting” the absorbent pad 100 into the diaper 1 means attaching the absorbent pad 100 so as not to cause displacement of the diaper 1. In the wearing process, in the state where the absorbent pad 100 and the absorbent main body 10 are merely arranged in an overlapping manner, there is a risk that the excrement may leak due to positional deviation or the like when the wearer moves the body. Therefore, it is necessary to firmly insert the absorbent pad 100 into the diaper 1 so that the absorbent pad 100 is less likely to be displaced relative to the diaper 1. In the present embodiment, the absorbent pad 100 is inserted into the diaper 1 such that the longitudinal center position CL10 of the absorbent main body 10 and the longitudinal center position CL100 of the absorbent pad 100 overlap.

FIG. 10 is a schematic cross-sectional view of the diaper 1 in a state in which the absorbent pad 100 is inserted into the diaper 1. FIG. 10 shows a cross section at a position where the horizontal length (width) of the back sheet 30 (outer layer sheet) is the smallest in the longitudinal direction of FIG. When inserting the absorbent pad 100 into the diaper 1, the lateral end of the absorbent pad 100 is aligned so that the longitudinal central position CL10 of the absorbent main body 10 and the longitudinal central position CL100 of the absorbent pad 100 are aligned. A space SP50 (represented by a hatched portion in FIG. 10) between the skin side of the top sheet 20 of the diaper 1 and the non-skin side of the folded portion 53 (folded joint 61) of the leakproof wall 50 of the part 100se. Put in (insert). As a result, the lateral end 100se of the absorbent pad 100 is held between the leakproof wall 50 and the top sheet 20 so as to be sandwiched, and the absorbent pad 100 is firmly held on the skin side of the absorbent main body 10.

FIG. 11 is a diagram showing a state in which the absorbent main body 10, the leak preventing wall 50, and the absorbent pad 100 are laterally extended from the state of FIG. In the present embodiment, the dimensions of predetermined portions of the absorbent pad 100 and the diaper 1 are adjusted so as to satisfy the following conditions so that the lateral end 100se of the absorbent pad 100 is accommodated in the space SP 50 without difficulty. That is, as shown in FIG. 11, the width W10 of the absorbent main body 10 in the lateral direction when both are expanded in the lateral direction so that the lengths of the absorbent main body 10 and the leak preventing wall 50 become maximum. The total value (W10 + 2 x h50) of double the distance h50 between the lateral end 10eо of the absorbent main body 10 and the inward joint portion 61 of the leaked wall 50 has the maximum length of the absorbent pad 100. To be greater than the total value (W100 + 2 × t100) of the width W100 in the lateral direction of the absorbent pad 100 and twice the maximum thickness t100 of the absorbent pad 100 when stretched in the lateral direction. Each dimension is adjusted.

When the wearer wears the diaper 1, the absorbent main body 10 and the absorbent pad 100 bend or contract in the lateral direction, so that the lengths of the absorbent main body 10 and the leak-proof wall 50 are maximum as described above. It defines the dimensions when stretched in the lateral direction so that Therefore, if the relationship of (W10 + 2 × h50)> (W100 + 2 × t100) is satisfied when the dimensions are compared in the stretched state as shown in FIG. 11, the absorbing pad 100 does not interfere with the leak preventing wall 50. Can be inserted into the diaper 1. In the state of FIG. 11, since the absorbers 11 are not disposed at the positions of both ends 10eо in the lateral direction of the absorbent body 10, the thickness t10eо of the absorbent body 10 at both ends 10eо should be substantially ignored. Can.

In the position where the horizontal length (width) of the back sheet 30 (outer layer sheet) is the smallest, the length W 10 of the absorbent main body 10 is about 200 mm, and the length h 50 of the leak preventing wall 50 Is about 25 mm. Similarly, the length W100 of the absorbent pad 100 is about 210 mm, and the maximum thickness t100 of the absorbent pad 100 is about 10 mm. Therefore, the relationship of (W10 + 2 × h50) = 250 mm> (W100 + 2 × t100) = 230 mm is established.

Furthermore, as shown in FIG. 10, in the state where the absorbent pad 100 is inserted in the diaper 1, the distance W50 between the inner ends in the lateral direction of the pair of folding joints 61 (folding portions 53) is absorbed at least in part in the longitudinal direction It is adjusted to have a portion which is narrower than the lateral width W100 of the pad 100 (W100> W50). In the present embodiment, the length W of the space W50 between the pair of folding and joining portions 61 is about 140 mm (210 mm> 140 mm). As a result, the pair of folding and joining portions 61 prevents the absorption pad 100 from moving from the non-skin side to the skin side in the thickness direction. That is, since the absorbent pad 100 is pressed in the thickness direction and held firmly by the in-folding joint portion 61 (in-folding portion 53), detachment of the absorbent pad 100 from the diaper 1 is suppressed.

Further, in the state of FIG. 10, the distance W150 between the inner ends 150ei in the lateral direction of the pair of absorbent pad leakproof walls 150 is narrower than the distance W50 between the inner ends in the lateral direction of the inward joint 61 (W50> W150). . That is, in a state where the absorbent pad 100 is inserted in the diaper 1, the pair of absorbent pad leakproof walls 150 (inner end portion 150ei) are erected inside the lateral direction of the pair of leakproof walls 50, and the lateral direction Will be provided with double barriers. Thereby, it becomes easier to suppress that the excrement leaks to the outside of the diaper 1. In addition, as described above, the top surface 51 of the leakproof wall 50 of the diaper 1 fits snugly on the wearer's body, and even if the wearer moves the body, the interval W50 does not easily change. Therefore, even when the wearer moves the body with the absorbent pad 100 inserted in the diaper 1, the interval W150 of the absorbent pad leak-barrier 150 is prevented from being excessively extended, and a good fit is maintained. At the same time, the function as a leak-proof wall is secured, and the side leakage of the excrement is less likely to occur.

Further, in the state of FIG. 10, the width W110 in the lateral direction of the pad absorbent 110 (the absorbent pad 100) is wider than the width W11 in the lateral direction of the absorbent 11 (the absorbent main body 10) (W110> W11). Thereby, compared with the case where diaper 1 is used without using pad absorption object 110, it is possible to enlarge absorption capacity, such as excrement. That is, by using the absorbent pad 100 in combination, it is possible to make the diaper replacement interval longer. According to the diaper 1 of the present embodiment, the leakage preventing wall 50 is provided with the indented portion 53 (indented joint portion 61), so that even the wide pad absorbent body 110 (absorptive pad 100) can be reasonably obtained. It becomes possible to insert. Since the absorbent pad 100 with a large amount of absorption can be easily accommodated in the three-dimensional shape of the diaper 1 (the leak-proof wall 50), the wearer can stay in the state of wearing a pants-type diaper that is easy to move even at night. As a result, it becomes possible to spend on pants-type diapers all day, which makes life more comfortable.

In addition, when the excretion absorption amount by the absorption pad 100 increases, there is a possibility that the part weight may increase and it may become easy to sag below. However, since the diaper 1 of the present embodiment has a structure in which the fold-down portion 53 provided in the leak-proof wall 50 does not cause the drop down to the lower side, the absorbent pad 100 held by the diaper 1 also does not easily drop down to the lower side. The problem is less likely to occur even if the amount of absorbed waste is increased. Further, as described with reference to FIG. 9, the operation when replacing the absorbent pad 100 is easy, and positional deviations and the like are less likely to occur, so a person (for example, a carer or less) who wears the diaper 1 (absorbent pad 100) , Also known as the user) can be reduced.

Moreover, in the above-mentioned insertion process, when inserting the absorption pad 100 in the diaper 1 as shown in FIG. 10, a finger is inserted in space SP50 and the folding part 53 (folding joint part 61) of the leakproof wall 50 is transversely After pulling out to the outside, an operation of placing the cover on the skin side of the absorbent pad 100 is performed. In the leakproof wall 50 of the diaper 1, leakproof wall elastic members 551 to 555 are arranged to facilitate such an operation. Specifically, it is disposed laterally inward of the fold joint 61 with respect to the interval d 55 a in the lateral direction of the plurality of leak preventing wall elastic members 551 to 554 disposed laterally outward of the fold junction 61. Among the leakproof wall elastic members 55, the leakproof wall elastic member 555 located at the outermost side, and the innermost one of the plurality of leakproof wall elastic members 55 arranged laterally outside the inward joint portion 61. The elastic members are arranged such that the distance d55b in the lateral direction to the leak-barrier elastic member 554 located is wider (d55a <d55b).

By arranging the plurality of leak preventing wall elastic members 551 to 554 in the region laterally outside the inward joint portion 61 and reducing the distance d55a, the leak preventing wall 50 (the top surface portion 53) can be formed in the region. It makes it easy to fit snugly on the skin of the wearer (see FIGS. 5 and 10). On the other hand, when the finger is inserted into the space SP50 in the insertion step by widening the distance d55b between the leak preventing wall

elastic members

554 and 555 in the region inside in the lateral direction, the tip of the finger is the distance d55b. It is easy to get stuck in the middle. In the insertion step, in the state in which the wearer wears the diaper 1, the folding portion 53 is at a position where it is difficult to visually recognize from the outside. However, in the present embodiment, by making the finger easily hooked to the portion of the gap d55b of the leakproof wall 50, even if the folded portion 53 is in a state in which it is difficult to visually recognize, the folded portion 53 (folded junction 61) is absorbed. An operation of disposing on the skin side of the pad 100 can be easily performed. Thereby, it becomes easy to insert the absorption pad 100 into the diaper 1 correctly correctly, and the leak etc. of excretion are suppressed.

In addition, when the distance d55b is narrowed, more elastic members 55 are arranged by the fold-in portion 53 located above the space SP50, and a larger contraction force acts on the fold-in portion 53 by the elastic members. You will come to In this case, the folding portion 53 shrinks, making it difficult to insert the absorbing pad 100 into the space SP 50, or a shrinking force acts on the absorbing pad 100 itself to generate unevenness or wrinkles on the surface of the absorbing pad 100. There is a risk that the person may easily feel discomfort. On the other hand, in the present embodiment, since the gap d55b is wide and the contraction force acting on the inward portion 53 is appropriately adjusted, it is easy to insert the absorbent pad 100, and the wearer feels discomfort when worn. Hard to cause.

In FIGS. 10 and 11, the relationship between the dimensions (for example, W100 and W10) at the position where the horizontal length (width) of the back sheet 30 (outer layer sheet) is the smallest in the longitudinal direction has been described. The relationship is established for the region in which the narrow portion 110s is formed in the longitudinal direction of the absorbent pad 100. FIG. 12 is a schematic plan view illustrating the positional relationship between the diaper 1 and the absorbent pad 100 in a state where the absorbent pad 100 is inserted into the diaper 1. FIG. 12 shows a state in which the absorbent pad 100 is inserted into the diaper 1 so that the longitudinal central position CL10 of the diaper 1 (the absorbent main body 10) and the longitudinal central position CL100 of the absorbent pad 100 overlap. .

In the state which inserted the absorption pad 100 in the diaper 1 by FIG. 12, the narrow part 110s of the width | variety of the absorption pad 100 and the folding junction part 61 of the diaper 1 overlap about the thickness direction. In this overlapping area, the relationship of the dimensions of each part, such as the width W100 of the absorbent pad 100, the width W10 of the absorbent main body 10, and the interval W50 of the in-folding joint 61, is the same as in FIG. Therefore, at least in the region where the narrow portion 110s is provided in the longitudinal direction, the absorbent pad 100 can be firmly held between the inward joint portions 61, so displacement does not easily occur and leakage of excrement Is less likely to occur.

Furthermore, the length of the folding joint 61 in the longitudinal direction is longer than the length of the narrow portion 110s in the longitudinal direction (see FIG. 12). Therefore, even if the position of the diaper 1 in the longitudinal direction and the position of the absorbent pad 100 deviate, if the inward joint portion 61 and the narrow portion 110s of the diaper 1 overlap in the thickness direction, The absorbent pad 100 is firmly inserted into the diaper 1 to maintain the state of FIG. That is, even when positional deviation in the longitudinal direction occurs between the absorbent pad 100 and the diaper 1 in the insertion step, the absorbent pad 100 can be inserted into the diaper 1.

Moreover, in the longitudinal direction of the leakproof wall 50, in the area | region in which the non-joining part 62 is formed, since the leakproof walls 50 comrades are not joined, rigidity is low and it is easy to deform | transform. Therefore, when the absorbent pad 100 is inserted, the lateral end 100se of the absorbent pad 100 can be easily inserted into the portion where the non-joined portion 62 is formed. That is, the area of the non-joining portion 62 functions as a pocket by the leakage preventing walls 50 provided on the left and right sides, and the absorbing pad 100 is completely accommodated. In fact, in the present embodiment, as shown in FIG. 12, the wide portion W1001 where the width in the lateral direction of the absorbent pad 100 is the largest can be accommodated in the region where the non-joining portion 62 is formed. ing.

On the other hand, at the end joint portion 63 provided outside the non-joining portion 62 in the longitudinal direction of the leakproof wall 50, the leakproof wall 50 is fixed to the skin side surface of the top sheet 20, and the end of the leakproof wall 50 The lateral space of the joint portion 63 is narrower than the wide portion W1001 of the absorbent pad 100. Therefore, even if the position of the absorbent pad 100 accommodated in the non-joined part 62 is shifted in the longitudinal direction (longitudinal direction), the wide part W100l of the absorbent pad 100 is caught on the end joint part 63, so the absorbent pad 100 is longitudinally Can be suppressed from moving outside of the Thereby, the absorption pad 100 is prevented from protruding to the outside of the diaper 1 in the longitudinal direction, and the excrement is unlikely to leak out.

In the insertion step described above, when a user (for example, a caregiver) who wears the diaper 1 inserts a finger into the space SP 50 and pulls out the leakproof wall 50 to the skin side of the absorbent pad 100, the space SP 50 When the finger is moved along the longitudinal direction (longitudinal direction) with the finger still in place, the movement of the finger is stopped by the joint 63 at the boundary between the non-joint portion 62 and the end joint 63. Thereby, the user can recognize the area in which the non-joint portion 62 and the fold-in joint portion 61 of the leak-barrier 50 are formed in the longitudinal direction by the sense of the finger without visual recognition. Therefore, the position of the pocket (the position where the non-joining portion 62 is provided) to which the wide portion W100l of the absorbent pad 100 should be inserted is unlikely to be erroneous, and the absorbent pad 100 can be firmly accommodated between the leakproof walls 50. .

Further, in the present embodiment, the length in the longitudinal direction of the diaper 1 (the distance between both ends in the longitudinal direction) in the longitudinal direction of the absorbent pad 100 in the state where the diaper 1 and the absorbent pad 100 are respectively elongated in the longitudinal direction. Longer than the length (distance between the longitudinal ends). That is, when the diaper 1 is worn, the entire absorbent pad 100 can be accommodated in the interior of the diaper 1 in the longitudinal direction (longitudinal direction), and absorption is performed from the ventral end portion or the dorsal end portion in the longitudinal direction. The pad 100 is less likely to protrude. Thereby, it can control that excrement leaks outside the diaper 1 from the belly side or the back side of a longitudinal direction (longitudinal direction).

Furthermore, the distance between the longitudinal ends of the absorbent pad 100 is, as shown in FIG. 12, the longitudinal inner end (end 30e.alpha.) Of the ventral fold 30fa and the length of the dorsal fold 30fb. It is shorter than the distance in the longitudinal direction between the direction inner end (end 30eb). The end 30eA of the ventral side folded portion 30fa is a dry edge not provided with an adhesive or the like, and the ventral side folded portion 30fa and the absorbent main body 10 (and the leak preventing wall 40) are provided at the end 30eA. Is not joined. Therefore, even if the position of the absorbent pad 100 is shifted to the ventral side in the longitudinal direction, the ventral end of the absorbent pad 100 in the longitudinal direction is the gap between the ventral fold 30fa and the absorbent main body 10 (end 30e Can be caught on the dry edge formed on the) to stop the displacement in the longitudinal direction to the ventral side. Similarly, in the back fold 30fb, the end 30eb is a dry edge provided with no adhesive or the like, and in the end 30eb, the back fold 30fb is the absorbent main body 10 (and the leakage prevention Not joined with the wall 40). Therefore, even if the position of the absorbent pad 100 is shifted to the back in the longitudinal direction, the back end of the absorbent pad 100 in the longitudinal direction is a gap between the back folded portion 30fb and the absorbent main body 10 (formed in the end 30eb Can be caught on the dry edge) to stop the longitudinal dorsal displacement.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, it goes without saying that the present invention can be modified or improved without departing from the gist thereof, and that the present invention includes equivalents thereof. For example, the following modifications are possible.

Although the above-mentioned embodiment explained the example which uses thread rubber as a waist elastic member and a leak-barrier elastic member, these elastic members are not restricted to so-called linear elastic members, such as thread rubber. For example, a planar (strip-like) elastic member having a predetermined width may be used. In addition, the sheet member constituting the leak-proof wall or the back sheet may be a stretchable sheet member (for example, a stretchable non-woven fabric), thereby eliminating the need for separately providing an elastic member such as thread rubber.

In the above-described embodiment, the outer layer sheet 30 has the constricted portion 30 c, and an example is shown in which the length (width) in the lateral direction of the outer layer sheet 30 changes at a predetermined position in the longitudinal direction. The outer layer sheet 30 may not have the constricted portion 30c. For example, in a certain range in the longitudinal direction, the lengths in the lateral direction of the outer layer sheet 30 may be equal. In such a case, the above-mentioned “position at which the lateral length of the outer layer sheet in the longitudinal direction is the smallest” is the position on the back of the portions having the same length in the lateral direction of the outer layer sheet 30 in the longitudinal direction. Shall be

1 diaper (pants-type disposable diaper),
3 ventral waist, 3es ventral side edge,
4 back waist, 4es back side edge,
5 crotch,
10 Absorbent body, 10eо end,
11 absorber, 11c neck, 11ea end, 11eb end,
12 core wrap sheets,
20 top sheets,
30 back sheet, 30c neck, 30eа end, 30fa ventral fold,
30eb end, 30fb dorsal turn,
31 back film, 32 upper outer layer sheet, 33 lower outer layer sheet,
35a ventral waist elastic member, 35b dorsal waist elastic member,
35lg dorsal leg elastic member, 35lgs straight part, 35lgc curved part,
50 leak barriers,
50s seat member, 50ei inner end, 50eо outer end, 50rp base,
51 top surface portion, 52 lower surface portion, 53 indented portion, 54 single layer portion,
55 leak-barrier elastic member, 551 to 556 leak-barrier elastic member,
61 Folded joints, 62 non-joints, 63 end joints, 65 boundaries,
100 absorbent pads, 100se end,
110 pad absorber,
110 lа ventral wide section, 110 lb dorsal wide section, 110 s narrow section,
111 slit, 112 core wrap sheet, 115 second pad absorber,
120 top sheets,
130 backsheet, 130eо outer edge,
131 back film, 132 outer layer sheet,
150 absorbent pad leak-proof wall, 150ei inner end,
151 absorbent pad elastic member, 155 joints, 156 joints, 157 joints,
f1, f2, f3 bending line,
BH waist opening, LH leg opening,
CL10 center position, CL100 center position,
d55a interval, d55b interval,
W10 width (absorbent body), W100 width (absorbent pad),
W11 width (absorbent), W110 width (pad absorbent),
W50 interval (folding joint), W150 interval (absorbent pad leak-proof wall),
h50 distance, t100 thickness (absorbent pad 100),
SP50 space

Claims

An absorbent body comprising an absorbent body having longitudinal and transverse directions intersecting each other;
A pair of leak-barrier walls provided with elastic members that expand and contract in the longitudinal direction, provided on both sides in the lateral direction of the absorbent main body;
And an outer layer sheet provided on the non-skin side of the absorbent main body,
It is a pants type disposable diaper which can attach and detach a liquid absorptive absorption pad to the skin side of the thickness direction of the absorptive main part,
The pair of leak preventing walls each have a joint portion in which the surfaces on one side in the thickness direction are joined to each other at a position where the lateral length of the outer layer sheet is at least minimal in the longitudinal direction.
The absorbent main body at the minimum position when the absorbent main body and the leak-proof wall are extended so that the length of the absorbent main body and the leak-proof wall is maximized in the lateral direction. The sum of the width in the lateral direction and the double of the distance between the lateral end of the absorbent body of the leakproof wall and the joint portion is:
The absorbent pad at the minimum position when the absorbent pad is inserted into the pants-type disposable diaper when the absorbent pad is extended so that the length of the absorbent pad becomes maximum in the lateral direction. Greater than the sum of the lateral width of and the double of the thickness of the absorbent pad,
When the absorbent pad is inserted into the pants-type disposable diaper,
The interval between the inner ends in the lateral direction of the pair of joints has a portion where the width of the absorbent pad is narrower than the lateral width.
Pants type disposable diaper characterized by.
The pants-type disposable diaper according to claim 1,
The absorbent pad has a pair of absorbent pad leakage barriers on both sides in the lateral direction,
At the minimum position
The lateral spacing of the pair of absorbent pad leaky walls is
A pants-type disposable diaper characterized in that it is narrower than the distance between the lateral ends of the pair of joint portions.
The pants-type disposable diaper according to claim 1 or 2,
A plurality of leak preventing wall elastic members that extend and contract in the longitudinal direction are provided in the lateral direction on the leak preventing wall,
In the lateral direction, the number of the leak-barrier elastic members disposed outside the joint is greater than the number of the leak-bar elastic members disposed inside the joint. Pants type disposable diapers.
The pants-type disposable diaper according to claim 3
In the lateral direction, the lateral spacing of the plurality of the leak-barrier elastic members disposed outside the joint is smaller than the lateral spacing.
Among the leak-barrier elastic members disposed on the inner side than the joint in the lateral direction, the leak-barrier elastic member positioned on the outermost side, and the leak preventer disposed on the outer side than the joint The pants-type disposable diaper characterized in that the lateral distance between the wall elastic member and the innermost leakproof wall elastic member is wider in the lateral direction.
The pants-type disposable diaper according to any one of claims 1 to 4,
The absorbent pad has a liquid absorbent pad absorber.
At the minimum position
The width of the pad absorber when the pad absorber is extended so that the length of the pad absorber becomes maximum in the lateral direction is:
The pants-type disposable diaper characterized in that it is wider than the width of the absorber when the absorber is stretched so that the length of the absorber becomes maximum in the lateral direction.
The pants-type disposable diaper according to claim 5
The pad absorber has a narrow portion having the narrowest width in the lateral direction in a region between both ends of the absorbent pad in the longitudinal direction.
In the longitudinal direction, the joint portion and the narrow portion overlap with each other,
The length of the said junction part in the said longitudinal direction is longer than the length of the said narrow part in the said longitudinal direction, The underpants-type disposable diaper characterized by the above-mentioned.
The pants-type disposable diaper according to any one of claims 1 to 6,
The absorber has a constriction between both ends of the absorber in the longitudinal direction,
In the thickness direction, the pair of joints do not overlap with the absorber, respectively,
The pants-type disposable diaper, wherein the distance between the pair of joint portions in the lateral direction is shorter than the length at both end portions in the longitudinal direction of the absorber.
The pants-type disposable diaper according to any one of claims 1 to 7,
An inner layer sheet provided on the skin side of the absorbent main body,
The pair of leakage barriers are
And an end joint portion joined to the inner layer sheet at both longitudinal ends.
In the longitudinal direction, the leakage preventing wall has a non-joining portion which is not joined in the thickness direction between the joining portion and the end joining portion,
When the absorbent pad is inserted into the pants-type disposable diaper,
At least a portion of the longest longitudinal portion of the absorbent pad overlaps the non-joining portion in the longitudinal direction;
The pants-type disposable diaper, wherein the distance between the end joints in the lateral direction is shorter than the maximum length in the lateral direction of the absorbent pad.
A pants-type disposable diaper according to any one of claims 1 to 8,
The ventral side folded portion in which the ventral end of the outer layer sheet in the longitudinal direction is folded back inward in the longitudinal direction, and the back end of the longitudinal direction of the outer layer sheet is folded inward in the longitudinal direction And a folded back portion,
The distance between the longitudinal ends of the absorbent pad is
A pants-type disposable according to claim 1, characterized in that the distance in the longitudinal direction between the longitudinal inner end of the ventral fold and the longitudinal inner end of the dorsal fold is shorter than the distance in the longitudinal direction. Diapers.
An absorbent body comprising an absorbent body having longitudinal and transverse directions intersecting each other;
A pair of leak-barrier walls provided with elastic members that expand and contract in the longitudinal direction, provided on both sides in the lateral direction of the absorbent main body;
And an outer layer sheet provided on the non-skin side of the absorbent main body,
A liquid absorbent absorbent pad is removable on the skin side in the thickness direction of the absorbent main body,
Each of the pair of leak preventing walls has a joint portion in which the surfaces on one side in the thickness direction are joined to each other at a position where the lateral length of the outer layer sheet in the longitudinal direction is minimized.
The absorbent main body at the minimum position when the absorbent main body and the leak-proof wall are extended so that the length of the absorbent main body and the leak-proof wall is maximized in the lateral direction. The sum of the lateral width and twice the distance between the lateral end of the absorbent body of the leakproof wall and the joint portion is
When the absorbent pad is extended such that the length of the absorbent pad becomes maximum in the lateral direction, the lateral width of the absorbent pad and the absorbent pad at the minimum position at the time of mounting Greater than the sum of twice the thickness,
A pants type having a portion in which the distance between the inner ends in the lateral direction of the pair of joint portions is narrower than the lateral width of the absorbent pad when the absorbent pad is inserted into the pants-type disposable diaper. A method of wearing a pants-type disposable diaper, wherein the disposable diaper is worn by a wearer,
An absorbent pad disposing step of arranging the absorbent pad in the crotch of the wearer;
Allowing the wearer to wear the pants-type disposable diaper such that the absorbent main body overlaps the non-skin side of the absorbent pad disposed;
An absorbent pad inserting step of inserting the absorbent pad into the pants-type disposable diaper;
A pants-type disposable diaper wearing method comprising:
The method for mounting a pants-type disposable diaper according to claim 10,
The absorbent pad has a pair of absorbent pad leakage barriers on both sides in the lateral direction,
At the minimum position
The lateral spacing of the pair of absorbent pad leaky walls is
A method for wearing a pants-type disposable diaper characterized in that it is narrower than the distance between the inner ends in the lateral direction of the pair of joints.
The method for attaching a pants-type disposable diaper according to claim 10 or 11,
A plurality of leak preventing wall elastic members that extend and contract in the longitudinal direction are provided in the lateral direction on the leak preventing wall,
In the lateral direction, the number of the leak-barrier elastic members disposed outside the joint is greater than the number of the leak-bar elastic members disposed inside the joint. Pants-type disposable diaper wearing method.
The method for wearing a pants-type disposable diaper according to claim 12;
In the lateral direction, the lateral spacing of the plurality of the leak-barrier elastic members disposed outside the joint is smaller than the lateral spacing.
Among the leak-barrier elastic members disposed on the inner side than the joint in the lateral direction, the leak-barrier elastic member positioned on the outermost side, and the leak preventer disposed on the outer side than the joint A method for attaching a pants-type disposable diaper characterized in that the lateral distance between the wall elastic member and the leak-barrier elastic member located at the innermost side is wider in the lateral direction.
The method for attaching a pants-type disposable diaper according to any one of claims 10 to 13,
The absorbent pad has a liquid absorbent pad absorber.
At the minimum position
The width of the pad absorber when the pad absorber is extended so that the length of the pad absorber becomes maximum in the lateral direction is:
A method for attaching a pants-type disposable diaper, wherein the width of the absorbent body is expanded so that the length of the absorbent body is maximized in the lateral direction.
A method of attaching the pants-type disposable diaper according to claim 14;
The pad absorber has a narrow portion having the narrowest width in the lateral direction in a region between both ends of the absorbent pad in the longitudinal direction.
In the longitudinal direction, the joint portion and the narrow portion overlap with each other,
The length of the said junction part in the said longitudinal direction is longer than the length of the said narrow part in the said longitudinal direction, The underpants-type disposable diaper mounting method characterized by the above-mentioned.
The method for attaching a pants-type disposable diaper according to any one of claims 10 to 15,
The absorber has a constriction between both ends of the absorber in the longitudinal direction,
In the thickness direction, the pair of joints do not overlap with the absorber, respectively,
In the pants-type disposable diaper mounting method, a distance between the pair of joint portions in the lateral direction is shorter than a length at both end portions in the longitudinal direction of the absorber.