JP5987131B1 - Pants-type disposable diapers and methods for wearing pants-type disposable diapers - Google Patents

Abstract

When an absorbent pad is stacked on a pants-type disposable diaper having a leak-proof wall, the absorbent pad is less likely to be displaced and excrement is less likely to leak. A pants-type disposable diaper (1) comprising an absorbent main body (10), a pair of leak-proof walls (50), and an outer layer sheet (30), wherein an absorbent pad (100) is removable. The leak-proof wall (50) has a joint portion (61) at a position where the length of the outer layer sheet (30) in the longitudinal direction is the smallest in the longitudinal direction. The lateral width of the absorbent main body (10), the lateral end of the absorbent main body (10) and the joint (61) at the minimum position when the leakage wall (50) is extended. The total value of the distance between the absorption pad (100) and the absorption pad (100) in the horizontal position is the width of the absorption pad (100) in the minimum position when the absorption pad (100) is extended in the horizontal direction. 100) greater than the total thickness with twice the thickness, absorbed by diaper (1) Upon insertion of the head (100), the interval between the inner end in the transverse direction of the joint (61) has a narrower becomes part than the lateral width of the absorbent pad (100). [Selection] Figure 10

Description

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

  Conventionally, pants-type disposable diapers have been used. A general pants-type disposable diaper is provided with an absorptive main body having an absorbent body that absorbs excrement and has a longitudinal direction and a width direction in a deployed state. And the leak prevention wall part which prevents the excrement absorbed by the absorber from leaking outside the diaper is provided on both sides in the width direction of the absorbent main body along the circumference of the wearer's leg. For example, in Patent Document 1, a leak-proof cuff (leak-proof wall portion) is provided on both sides of a main body (absorbent main body), and the anti-proof is provided at an intermediate portion that is a region that is applied to the wearer's thigh when worn. Disclosed is a disposable diaper in which the leak-proof cuff is less likely to protrude to the outside (side of the diaper) by reducing the length of the leakage cuff that can stand up, and side leakage is easily prevented.

JP 2005-218876 A

  When using a disposable diaper, a separate absorbent pad may be used on the inside (skin side) of the diaper. By placing an absorbent pad between the wearer's body and the diaper, it is possible to replace only the absorbent pad without exchanging the diaper when excretion is performed. Can be reduced. However, in a pants-type disposable diaper, it is difficult for the wearer to wear the absorbent pad in a state where the position of the absorbent pad is not shifted in the diaper, and excrement may leak due to the positional shift of the absorbent pad. . Moreover, when it is going to overlap an absorption pad on the underpants type diaper which has a leak-proof wall part like patent document 1, it arrange | positions so that an absorption pad may cover on a leak-proof wall part, and a leak-proof wall part Ceased to function and excrement leaked to the clothing side.

  The present invention has been made in view of the above-described conventional problems, and the purpose thereof is to position the absorbent pad when the absorbent pad is used on a pants-type disposable diaper having a leak-proof wall. In addition, it prevents the excrement from leaking out of the diaper.

A main invention for achieving the above object includes an absorbent main body including an absorbent body having a longitudinal direction and a lateral direction intersecting each other, and an elastic member extending and contracting in the longitudinal direction, and the lateral side of the absorbent main body. A pair of leak-proof walls provided on both sides in the direction and an outer layer sheet provided on the non-skin side of the absorbent main body, and absorbing liquid absorption on the skin side in the thickness direction of the absorbent main body A pants-type disposable diaper in which a pad can be attached and detached, wherein the pair of leak-proof walls are located on one side in the thickness direction at a position where the lateral length of the outer layer sheet is minimum in the longitudinal direction. When the surfaces of the absorbent body and the leak-proof wall are extended so that the lengths of the absorbent main body and the leak-proof wall are maximized in the lateral direction, respectively. Before the minimum position The total value of the lateral width of the absorbent main body and twice the distance between the lateral end of the absorbent main body and the joint portion of the leak-proof wall is the lateral direction, When the absorbent pad is extended so that the length of the absorbent pad is maximized, in the lateral direction, when the absorbent pad is extended so that the length of the absorbent pad is maximized, When the absorbent pad is inserted into the pants-type disposable diaper, the pants mold is larger than the total value of the lateral width of the absorbent pad at the minimum position and twice the thickness of the absorbent pad. When the absorbent pad is inserted into a disposable diaper, the gap between the inner ends in the lateral direction of the pair of joint portions is smaller than the lateral width of the absorbent pad, and the leakage prevention On the wall A plurality of leak-proof wall elastic members extending and contracting in the hand direction are provided side by side in the lateral direction, and the number of the leak-proof wall elastic members arranged outside the joint portion in the lateral direction is the number of the joints. More than the number of the leak-proof wall elastic members arranged on the inner side than the portion, the back waistline portion of the outer layer sheet is provided with a back waistline elastic member and a back leg elastic member, The back waistline elastic member is arranged along the lateral direction, and the back leg circumference elastic member is arranged at the central portion of the lateral direction along the lateral direction, and the straight line A curved portion disposed so as to be curved from both lateral sides of the portion toward the outer side in the lateral direction, the linear portion has a portion overlapping with the absorber, and an expansion ratio in the linear portion is Front so that it becomes lower than the expansion ratio of the back waistline elastic member A pants-type disposable diaper characterized in that the elastic member around the dorsal leg is disposed .
Other features of the present invention will become 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 on a pants type disposable diaper which has a leak-proof wall, while making it difficult to produce the position shift of an absorption pad, it suppresses that excrement leaks outside the diaper. can do.

It is a top view of the diaper 1 which is an unfolded and extended state. It is the schematic perspective view which looked at the diaper 1 from the ventral side. 3A is a schematic cross-sectional view taken along line AA in FIG. 3B is a schematic cross-sectional view taken along the line BB in FIG. 1A. 3C is a schematic cross-sectional view taken along the line CC in FIG. 1A. It is a top view of the leak-proof wall 50 which is an expanded and extended state. It is a schematic sectional drawing expanding and expressing about field D of Drawing 3C. Drawing 6A is a figure explaining the wearing state of diaper 1 before excretion is performed. Drawing 6B is a figure explaining the wearing state of diaper 1 after excretion is performed. It is a top view of the absorption pad 100 which is an unfolded and extended state. 8A is a schematic cross-sectional view taken along line EE in FIG. 8B is a schematic cross-sectional view taken along the line FF in FIG. It is a figure explaining mounting | wearing operation | movement of the diaper. It is a schematic sectional drawing of the diaper 1 in the state where the absorption pad 100 was inserted. 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 in the horizontal direction. It is a schematic plan view explaining the positional relationship of the diaper 1 and the absorption pad 100 in the state which inserted the absorption pad 100 in the diaper 1. FIG.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
A pair of leak-proofing devices provided with an absorbent main body having an absorbent body having a longitudinal direction and a transverse direction intersecting each other, and an elastic member extending and contracting in the longitudinal direction, and provided on both sides of the absorbent main body in the lateral direction A pants-type disposable diaper comprising a wall and an outer layer sheet provided on the non-skin side of the absorbent main body, and having a liquid-absorbing absorbent pad removable on the skin side in the thickness direction of the absorbent main body. The pair of leak-proof walls each have a joining portion in which the surfaces on one side in the thickness direction are joined at least at a position where the length in the lateral direction of the outer layer sheet is minimum in the longitudinal direction. In the lateral direction, the absorption 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. The lateral width of the The total value of the wall and twice the distance between the lateral end of the absorbent main body and the joint is such that the length of the absorbent pad 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 is maximized in the lateral direction when the pad is extended. When the absorbent pad is inserted into the pants-type disposable diaper that is larger than the total value of the lateral width of the absorbent pad at the minimum position and twice the thickness of the absorbent pad, The underpants-type disposable diaper characterized in that an interval between the inner ends in the lateral direction of the joint portion has a portion that becomes narrower than the lateral width of the absorbent pad.

  According to such a pants-type disposable diaper, when the absorbent pad is used in an overlapping manner, both lateral ends of the absorbent pad are accommodated in the space between the junction of the leak-proof wall and the skin side surface of the absorbent main body. The absorbent pad can be inserted without interfering with or covering the leak-proof wall. Moreover, since the inserted absorption pad is hold | suppressed and hold | maintained in the thickness direction by the junction part of a leak-proof wall, it will be suppressed that an absorption pad detaches | leaves. Thereby, while making it difficult to produce position shift of an absorption pad, it can control that excrement leaks to the outside of a 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 leakproof walls on both sides in the lateral direction, and the lateral direction of the pair of absorbent pad leakproof walls at the minimum position. It is desirable that the distance at is narrower than the distance between the inner ends of the pair of joint portions in the lateral direction.

  According to such a pants-type disposable diaper, since the leak-proof wall of the absorbent pad is erected between the pair of leak-proof walls provided on the absorbent main body, double leak-proof in the lateral direction. The arrangement is to provide walls. Thereby, it becomes easy to suppress that excrement leaks outside the pants-type disposable diaper. In addition, the absorbent main body leakage barriers located on both sides of the absorbent pad leakage barrier in the lateral direction prevent the absorbent pad leakage barrier from spreading excessively outward in the lateral direction, and also prevent the leakage barrier displacement. It becomes difficult to occur. Thereby, a good fit is ensured.

  In such a pants-type disposable diaper, the leak-proof wall is provided with a plurality of leak-proof wall elastic members extending and contracting in the longitudinal direction in the lateral direction, and in the lateral direction, more than the joint portion. It is desirable that the number of the leak-proof wall elastic members arranged on the outer side is larger than the number of the leak-proof wall elastic members arranged on the inner side than the joint portion.

  According to such a pants-type disposable diaper, by arranging a large number of elastic members in a region of the leak-proof wall that has a lower lateral rigidity than the joint, the region is a curved surface that corresponds to the unevenness of the wearer. It becomes easy to form and the fit property with respect to a wearer's skin improves. Further, by providing a plurality of elastic members, it becomes difficult for the contracting force (pressure) acting on the leak-proof wall to concentrate on one place, and it is possible to suppress the deterioration of the wearing comfort of the pants-type disposable diaper.

  In such a pants-type disposable diaper, in the lateral direction, the lateral direction of the plurality of leak-proof wall elastic members disposed outside the joint part is more lateral than the joint part. Among the leak-proof wall elastic members arranged on the inner side, the leak-proof wall elastic member positioned on the outermost side, and the leak-proof wall elastic member arranged on the outer side of the joint, the innermost side. It is desirable that the distance in the lateral direction from the leak-proof wall elastic member positioned is wider.

  According to such a pants-type disposable diaper, when the absorbent pad is inserted into the diaper 1, the gap between the leakproof wall elastic member inside the joint and the leakproof wall elastic member outside the joint. Therefore, it becomes easy to perform an operation of pulling the leak-proof wall (joint portion) toward the skin side of the absorbent pad by hooking a finger on a portion where the interval is wide. Thereby, it becomes easy to insert an absorption pad correctly, and the leakage etc. of excrement are suppressed.

  In such a pants-type disposable diaper, the absorbent pad has a liquid absorbent pad absorbent so that the pad absorbent body has a maximum length in the lateral direction at the minimum position. The width of the pad absorbent when the pad absorbent is extended is greater than the width of the absorbent when the absorbent is extended so that the length of the absorbent is maximized in the lateral direction. It is also desirable that it be wide.

  According to such a pants-type disposable diaper, it is possible to increase the absorption capacity of excrement etc. compared to the case of using a pants-type disposable diaper without using a pad absorber, and the interval of diaper exchange Can be made longer. In addition, because the absorbent main body has a structure that is difficult to hang down due to the joint provided on the leak-proof wall, even if the excrement is absorbed and becomes heavy, the pad absorbent body is positioned downward. Difficult to sag and fit is unlikely to deteriorate.

  In such a pants-type disposable diaper, the absorbent pad has a liquid absorbent pad absorbent so that the pad absorbent body has a maximum length in the lateral direction at the minimum position. The width of the pad absorbent when the pad absorbent is extended is greater than the width of the absorbent when the absorbent is extended so that the length of the absorbent is maximized in the lateral direction. It is also desirable that it be wide.

  According to such a pants-type disposable diaper, it is possible to increase the absorption capacity of excrement etc. compared with the case where a pants-type disposable diaper is used without using a pad absorber. Moreover, when excretion is performed, it is only necessary to replace the absorbent pad without replacing the diaper itself, so that the convenience of replacement can be improved and the interval between diaper replacements can be increased. In addition, the absorbent body has a structure that is difficult to hang down by the joint provided on the leak-proof wall, so that even if the excrement is absorbed and becomes heavy, the pad absorbent body is located downward. Difficult to sag and fit is unlikely to deteriorate.

  In such a pants-type disposable diaper, the pad absorbent body has a narrow portion having a narrowest width in the lateral direction in a region between both end portions of the absorbent pad in the longitudinal direction, In the direction, it is desirable that the joint portion and the narrow portion overlap each other, 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 joint portions of the leak-proof wall in the region where the narrow portion is formed in the crotch part of the wearer, Misalignment of the absorbent pad or the like hardly occurs, and excrement leakage hardly occurs. Furthermore, even when the longitudinal displacement occurs between the absorbent pad and the diaper when the absorbent pad is inserted, the absorbent pad can be firmly inserted into the diaper.

  In such a pants-type disposable diaper, the absorbent body has a constricted portion between both end portions of the absorbent body in the longitudinal direction, and in the thickness direction, the pair of joint portions and the absorbent body respectively. It is preferable that 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 absorbent body.

  According to such a pants-type disposable diaper, when the joint portion is formed in the region within the constricted portion of the absorber, the leak-proof wall is folded by the joint portion in the region, and the standing height of the leak-proof wall is increased. You can avoid getting too expensive. Moreover, since a junction part does not overlap with an absorber, it becomes difficult to press a highly rigid junction part on a wearer's body (skin side) at the time of wear, and the deterioration of the touch at the time of diaper wear can be suppressed.

  Such a pants-type disposable diaper includes an inner layer sheet provided on the skin side of the absorbent main body, and the pair of leak-proof walls are joined to the inner layer sheet at both ends in the longitudinal direction. The pants-type disposable diaper has a non-joint part in which the leakage prevention wall is not joined in the thickness direction between the joint part and the end joint part in the longitudinal direction. When the absorbent pad is inserted, at least a part of the longest length in the lateral direction of the absorbent pad overlaps with the non-joined portion in the longitudinal direction, and the end joint in the lateral direction The interval between the portions is preferably 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-proof wall that has low rigidity and is easily deformed acts like a pocket, so that the portion with the widest width of the absorbent pad can be completely accommodated. It becomes possible. In addition, even when the position of the absorbent pad is shifted in the longitudinal direction due to the narrow interval between the end bonded portions, the portion with the widest width of the absorbent pad is caught by the end bonded portion. It becomes easy to suppress the position shift at.

  In such a pants-type disposable diaper, the ventral side end portion in the longitudinal direction of the outer layer sheet is folded back inward in the longitudinal direction, and the back side end portion in the longitudinal direction of the outer layer sheet Is a back-side folded portion folded inward in the longitudinal direction, and the distance between the longitudinal ends of the absorbent pad is equal to the longitudinal inner end of the ventral folded portion It is desirable that the distance between the back side folded portion and the inner end portion in the longitudinal direction is shorter than the distance in the longitudinal direction.

  According to such a pants-type disposable diaper, even if the position of the absorbent pad is shifted to the ventral side or the back side in the longitudinal direction, the longitudinal end portion of the absorbent pad is the folded portion of the exterior sheet and the inner layer sheet Is caught in a gap (dry edge) formed between the absorbent pad and the displacement of the absorbent pad in the longitudinal direction is stopped. Thereby, it is suppressed that an absorption pad protrudes from the longitudinal direction edge part of a diaper at the time of diaper wear.

  In addition, the absorbent body having an absorbent body having a longitudinal direction and a transverse direction intersecting each other, and an elastic member that expands and contracts in the longitudinal direction, and a pair of the absorbent 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, and a liquid-absorbing absorbent pad can be attached to and detached from the skin side in the thickness direction of the absorbent main body. Each of the leakage prevention walls has a joining portion in which the surfaces on one side in the thickness direction are joined to each other at a position where the length in the transverse direction of the outer layer sheet is minimized in the longitudinal direction, In the transverse direction of 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 Width of the absorbent main body of the leakage barrier The absorbent pad when the absorbent pad is extended so that the total value of the distance between the end in the direction and twice the distance between the joints becomes the maximum length of the absorbent pad in the lateral direction Larger than the total value of the width in the lateral direction of the absorbent pad and twice the thickness of the absorbent pad at the minimum position when inserted into the pants-type disposable diaper, Pants for causing a wearer to wear a pants-type disposable diaper having a portion where the distance between the inner ends in the lateral direction of the pair of joint portions becomes narrower than the lateral width of the absorbent pad when inserted. Type disposable diaper mounting method, wherein the absorbent pad is disposed between the wearer's crotch, and the absorbent main body overlaps the non-skin side of the disposed absorbent pad A pants-type disposable diaper mounting method comprising: a wearing step of causing the wearer to wear the pants-type disposable diaper; and an absorption pad inserting step of inserting the absorption pad into the pants-type disposable diaper. Becomes clear.

  According to such a pants-type disposable diaper mounting method, it is easy to adjust the position of the absorption pad with respect to the position of the excretion opening of the wearer's body, and excrement may leak from the absorption pad when the diaper is mounted. It is suppressed. Moreover, 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 and is good when wearing the diaper. Secure fit.

  In such a pants-type disposable diaper mounting method, the absorbent pad has a pair of absorbent pad leak-proof walls on both sides in the lateral direction, and the pair of absorbent pad leak-proof walls at the minimum position. The distance in the horizontal direction is preferably narrower than the distance between the inner ends of the pair of joint portions in the horizontal direction.

  According to such a pants-type disposable diaper mounting method, since the leak-proof wall of the absorbent pad is erected between the pair of leak-proof walls provided in the absorbent main body, it is doubled in the lateral direction. It becomes arrangement | positioning in which a leak-proof wall is provided. Thereby, it becomes easy to suppress that excrement leaks outside the pants-type disposable diaper. In addition, the absorbent main body leakage barriers located on both sides of the absorbent pad leakage barrier in the lateral direction prevent the absorbent pad leakage barrier from spreading excessively outward in the lateral direction, and also prevent the leakage barrier displacement. It becomes difficult to occur. Thereby, a good fit is ensured.

  In such a pants-type disposable diaper mounting method, the leak-proof wall is provided with a plurality of leak-proof wall elastic members extending and contracting in the longitudinal direction in the lateral direction. It is desirable that the number of the leak-proof wall elastic members arranged on the outer side is larger than the number of the leak-proof wall elastic members arranged on the inner side than the joint portion.

  According to such a pants-type disposable diaper mounting method, by arranging a large number of elastic members in a region of the leak-proof wall that has a lower lateral lateral rigidity than the joint, the region corresponds to the unevenness of the wearer. This makes it easier to form a curved surface and improves the fit of the wearer to the skin. Further, by providing a plurality of elastic members, it becomes difficult for the contracting force (pressure) acting on the leak-proof wall to concentrate on one place, and it is possible to suppress the deterioration of the wearing comfort of the pants-type disposable diaper.

  In such a pants-type disposable diaper mounting method, in the lateral direction, the joint in the lateral direction is more than the spacing in the lateral direction of the plurality of leak-proof wall elastic members disposed outside the joint part. Among the leak-proof wall elastic members arranged on the inner side of the part, the leak-proof wall elastic member located on the outermost side and the leak-proof wall elastic member arranged on the outer side of the joint part are the most. It is desirable that the distance in the lateral direction from the leakproof wall elastic member located inside is wider.

  According to such a pants-type disposable diaper mounting method, when the absorbent pad is inserted into the diaper, the leakproof wall elastic member inside the joint and the leakproof wall elastic member outside the joint Since the interval is wide, it is easy to perform an operation of hooking a finger on a portion where the interval is wide and pulling out the leak-proof wall (joint part) to the skin side of the absorbent pad. Thereby, it becomes easy to insert an absorption pad correctly, and the leakage etc. of excrement are suppressed.

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

  According to such a pants-type disposable diaper mounting method, it is possible to increase the absorption capacity of excrement etc. compared to the case of using a pants-type disposable diaper without using a pad absorber, and change diapers Can be made longer. In addition, because the absorbent main body has a structure that is difficult to hang down due to the joint provided on the leak-proof wall, even if the excrement is absorbed and becomes heavy, the pad absorbent body is positioned downward. Difficult to sag and fit is unlikely to deteriorate.

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

  According to such a pants-type disposable diaper mounting method, it is possible to increase the absorption capacity of excrement etc. compared to the case of using a pants-type disposable diaper without using a pad absorber, and change diapers Can be made longer. In addition, because the absorbent main body has a structure that is difficult to hang down due to the joint provided on the leak-proof wall, even if the excrement is absorbed and becomes heavy, the pad absorbent body is positioned downward. Difficult to sag and fit is unlikely to deteriorate.

  In such a pants-type disposable diaper mounting method, the pad absorbent body has a narrow portion having a narrowest width in the lateral direction in a region between both end portions of the absorbent pad in the longitudinal direction, In the longitudinal direction, it is preferable that the joint portion and the narrow portion overlap each other, 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 mounting method, it is possible to hold the absorbent pad firmly between the joint portions of the leak-proof wall in the region where the narrow portion is formed in the wearer's crotch. Yes, it is difficult for the absorbent pad to be displaced and the like to prevent the excrement from leaking. Furthermore, even when the longitudinal displacement occurs between the absorbent pad and the diaper when the absorbent pad is inserted, the absorbent pad can be firmly inserted into the diaper.

  In such a pants-type disposable diaper mounting method, the absorber has a constricted portion between both end portions of the absorber in the longitudinal direction, and the pair of joint portions are 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 end portions in the longitudinal direction of the absorbent body.

  According to such a pants-type disposable diaper mounting method, when the joint portion is formed in the region within the constricted portion of the absorbent body, the leak-proof wall is folded up by the joint portion in the portion, and the rising height of the leak-proof wall is increased. So that it is not too high. Moreover, since a junction part does not overlap with an absorber, it becomes difficult to press a highly rigid junction part on a wearer's body (skin side) at the time of wear, and the deterioration of the touch at the time of diaper wear can be suppressed.

=== Embodiment ===
<Basic configuration of diaper 1>
As an example of the absorbent article handled in the present embodiment, a basic configuration of a pants-type disposable diaper 1 (hereinafter also referred to as “diaper 1”) will be described. FIG. 1 is a plan view of the diaper 1 in an unfolded and extended state. FIG. 2 is a schematic perspective view of the diaper 1 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 "elongation state" in FIG. 1 is the state which extended the product (diaper 1) thoroughly, specifically, the dimension of each member (for example, back sheet 30 etc. mentioned later) which comprises the diaper 1 is the size. It means a state in which it has been extended to a length that matches or is close to the dimension of the member itself.

  The diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction as three directions orthogonal to each other in the pant-type state of FIG. And in the following, the one side and the other side in the vertical direction in this pants-type state are also referred to as the “trunk opening side” and the “inseam side”, respectively, and the front side and the back side in the front-rear direction are respectively Also called “ventral” and “dorsal”.

  On the other hand, in the developed state of FIG. 1, the diaper 1 has a longitudinal direction and a width direction as three directions orthogonal to each other. In the following description, the one side and the other side in the longitudinal direction in the developed state are also referred to as “abdominal side” and “back side”, respectively. In addition, said width direction in the expansion | deployment state is the same direction as said horizontal direction in a pants type state. Therefore, in the following, the width direction is also referred to as “lateral direction”. Moreover, the longitudinal direction of the unfolded state is a direction along the longitudinal direction of the pants-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 the “thickness direction”, and the side in contact with the skin of the wearer is referred to as the “skin side”. The opposite side is referred to as the “non-skin side”.

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

  The diaper 1 of the present embodiment includes an absorbent main body 10, a top sheet 20, a back sheet 30, and a leak-proof wall 50. 1, the absorbent main body 10 is folded in two at a predetermined position CL10 in the longitudinal direction (longitudinal direction) of the absorbent main body 10, and the antinodes opposed to each other in the folded state. When the side waistline portion 3 and the back side waistline portion 4 are joined by welding or the like at the ventral side edge portion 3es and the back side edge portion 4es, the waistline portions 3 and 4 are connected in an annular shape, A pant-type diaper 1 in which a waist opening BH and a pair of leg openings LH and LH as shown in FIG. 2 are formed.

  The absorptive main body 10 has a function of absorbing excrement such as urine, has a substantially rectangular shape in a plan view as shown in FIG. 1, and has a longitudinal center along the longitudinal direction of the diaper 1 and a lateral center. Is arranged. The absorbent main body 10 includes a liquid absorbent absorbent body (absorbent core) 11 and a core wrap sheet 12 that covers the outer peripheral surface of the absorbent body 11. In addition, leak-proof walls 50 are provided on both sides of the absorbent main body 10 in the lateral direction. Details of the leak-proof wall 50 will be described later.

  The absorbent body 11 is formed by molding liquid absorbent fibers such as pulp fibers into a predetermined shape, and a superabsorbent polymer (so-called SAP) or the like is mixed therein. In the present embodiment, the absorber 11 has a substantially hourglass shape in plan view, and has a constricted portion 11c whose central portion in the longitudinal direction is recessed inward in the lateral direction. That is, the absorbent body 11 has a constricted portion 11c having a lateral dimension smaller than both end portions 11ea and 11eb in the longitudinal direction of the absorbent body 11 at a position between both end portions 11ea and 11eb in the longitudinal direction. The core wrap sheet 12 is a liquid-permeable sheet member that covers the outer peripheral surface of the absorbent body 11, and tissue paper, nonwoven fabric, or 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 contacts the wearer's skin when the diaper 1 is worn. The top sheet 20 of the present embodiment is formed of, for example, an air-through nonwoven fabric or a spunbond nonwoven fabric.

  The back sheet 30 is a sheet member (outer layer sheet) that 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 includes 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. Providing the back film 31 suppresses movement (penetration) of moisture such as urine absorbed by the absorbent main body 10 toward the wearer's clothes.

  The upper outer layer sheet 32 and the lower outer layer sheet 33 are flexible sheet-like members that are arranged on the non-skin side of the back film 31 while being stacked 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 part 3 and the back waist part 4, and as a whole have a substantially hourglass shape as shown in FIG. That is, the back seat 30 has a constricted portion 30c in which a central portion (crotch portion 5) in the longitudinal direction is recessed inward in the lateral direction between the ventral waist portion 3 and the back waist portion 4.

  Further, in the diaper 1, the longitudinal end portion 30 ea of the back sheet 30 in the longitudinal direction is folded inward in the longitudinal direction, and part of the folded end portion 30 ea is the skin of the absorbent main body 10 and the leak-proof wall 50. An abdominal side folded portion 30fa that is overlapped and joined to the side is formed. Similarly, the end 30eb on the back side in the longitudinal direction of the back sheet 30 is folded back inward in the longitudinal direction, and part of the folded back end 30eb is on the skin side of the absorbent main body 10 and the leak-proof wall 50. A dorsal folded portion 30fb is formed which is overlapped and joined.

  In addition, an elastic member such as rubber thread 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, a plurality of ventral waist elastic members 35 a have a predetermined expansion ratio in the belly waist region 3 of the diaper 1 (region between the stomach side edge portions 3 es and 3 es). Thus, the upper outer layer sheet 32 and the lower outer layer sheet 33 are sandwiched and joined in a state of being stretched in the horizontal direction. By this abdominal waistline elastic member 35a, lateral stretchability is imparted to the abdomen waistline part 3 of the diaper 1. Similarly, in the back side waistline part 4 (area between the back side edge parts 4es, 4es) of the diaper 1, the plurality of back side waistline elastic members 35b are extended in the lateral direction at a predetermined extension magnification. It is joined between the outer layer sheet 32 and the lower outer layer sheet 33. By this back side waistline elastic member 35b, the stretchability in the horizontal direction is imparted to the back side waistline portion 4 of the diaper 1.

  The “elongation magnification” of the elastic member indicates the degree of elongation when the natural length of the elastic member (thread rubber) is 1. For example, when the expansion magnification is 1.2, the elastic member is natural. This means that the length has been extended by 0.2.

  Further, the back waistline portion 4 is provided with a plurality of back side leg elastic members 35lg. The back leg-hole elastic member 35lg is arranged to be curved along the constricted portion 30c from the inner region in the longitudinal direction of the back-side waist portion 4 (position closer to the center of the absorber 11 in the longitudinal direction). Specifically, as shown in FIG. 1, the back leg elastic member 35 lg is a straight portion disposed along the lateral direction in the lateral central portion (region where the absorber 11 is disposed). 35 lgs, and a curved portion 35 lgc arranged so as to bend obliquely upward toward the outside in the lateral direction from both lateral sides of the straight portion 35 lgs. 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 magnifications.

  In the present embodiment, the back leg-hole elastic member 35lg is arranged so that the extension magnification in the linear portion 35lgs is lower than the extension magnification of the back waistline elastic member 35b. Since the straight portion 35lgs has a portion overlapping the absorbent body 11 (absorbent body 10) in the central portion in the lateral direction, the absorbent body 11 is excessively contracted in the lateral direction by reducing the expansion ratio. Can be suppressed. The expansion magnification may be different depending on the horizontal position of the linear portion 35lgs. For example, the expansion ratio at the central portion in the horizontal direction of the straight portion 35lgs may be lower than the expansion magnification at both ends in the horizontal direction. Thereby, a gradient is generated in the stress in the straight part 35 lgs, and the shrinkage of the absorbent body 11 can be suppressed without impairing the fit.

  On the other hand, the expansion ratio of the curved portion 35lgc is arranged to be higher than the expansion 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 against the wearer's buttocks when the diaper 1 is worn, and is displaced by the wearer moving his / her leg. It is a part that tends to occur. Therefore, by increasing the expansion magnification of the curved portion 35lgc, the contraction force is increased to make it difficult to cause a positional shift. Moreover, since the shrinkage | contraction amount of the back seat | sheet 30 becomes large in the vicinity of the leg periphery opening LH, the back seat | sheet 30 becomes easy to deform | transform into the shape along the roundness of a wearer's buttocks, and can improve fitting property. Similar to the straight line portion 35lgs, the expansion magnification may be different in the lateral direction of the curved portion 35lgc. For example, in the bending portion 35lgc, the expansion ratio may be higher on the outer side than on the inner side in the horizontal direction.

<Leakage barrier 50>
Next, the leakage barrier 50 will be described. The leak-proof walls 50 are disposed along the longitudinal direction of the absorbent main body 10 (the vertical direction of the diaper 1) on both lateral sides of the absorbent main body 10, and from the side end of the absorbent main body 10 when the diaper 1 is worn. It stands up and it suppresses that excrement leaks to the outside of diaper 1. FIG. 4 is a plan view of the leak-proof wall 50 in the expanded and extended state. FIG. 5 is an enlarged schematic sectional view showing a region D in FIG. 3C. In FIG. 5, the scale in the thickness direction is modified for convenience of explanation.

  The leak-proof wall 50 is formed by folding a rectangular sheet member 50s as shown in FIG. 4 in the lateral direction along folding lines f1 to f3 along the longitudinal direction (vertical direction). As the sheet member 50 s forming the leak-proof wall 50, for example, a flexible sheet member such as a nonwoven fabric can be used. In addition, the leak-proof wall 50 is provided with a plurality of leak-proof wall elastic members 55 such as thread rubber that can expand and contract in the longitudinal direction. In the example of FIG. 4, six leak-proof wall elastic members 551 to 556 along the longitudinal direction are arranged side by side from the lateral outer side to the inner side. The leak-proof wall elastic members 551 to 556 are joined to the leak-proof wall 50 in a state of being stretched at a predetermined stretch ratio in the longitudinal direction. The leak-proof wall elastic member 55 imparts stretchability along the longitudinal direction to the leak-proof wall 50, and erects the leak-proof wall 50 when the diaper 1 is worn.

  The leak-proof wall elastic member 55 exhibits stretchability in a range indicated by a broken line in FIGS. 1 and 4. In addition, the leak-proof wall elastic member 55 which does not express a stretch property may exist in the area | region outside a longitudinal direction (vertical direction) rather than the range shown with the broken line in FIG.1 and FIG.4. Further, the number and arrangement of the leak-proof wall elastic members 55 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 portion 50ei of the leak-proof wall 50 (sheet member 50s) 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 50eо of the leak-proof wall 50 (sheet member 50s) projects outward in the lateral direction of the absorbent main body 10. In this state, the outer end 50eо is bent inward in the lateral direction with the fold line f1 as a base point, and the sheet members 50s are overlapped in the thickness direction with the leak-proof wall elastic members 551 to 556 sandwiched therebetween, Are joined together. In addition, among the leak-proof wall elastic members 55 provided in a row in the lateral direction, the outermost elastic member (the leak-proof wall elastic member 551 in FIG. 4) is arranged to be aligned with the horizontal position of the folding line f1. Has been.

  Subsequently, the sheet member 50s is bent in the thickness direction on the non-skin side and in the lateral direction with the folding line f2 as a base point. The lateral position of the fold line f2 is substantially the same as the lateral position of the leak-proof wall elastic member 555. Subsequently, the sheet member 50s is bent toward the skin side in the thickness direction and the inner side in the lateral direction with the folding line f3 as a base point. Thereby, the leak-proof wall 50 bent in a substantially S shape as shown in FIGS. 3 and 5 is formed. In the case of FIG. 5, the position of the fold line f <b> 3 becomes the base 50 rp when the leak-proof wall 50 is erected.

  The leak-proof wall 50 has the top surface portion 51 formed on the most skin side in the thickness direction by folding the sheet member 50s from one side in the lateral direction to the other side. The top surface portion 51 is a region having a predetermined width in the lateral direction between the fold line f1 and the fold line f2, and the top surface portion 51 is provided with leak-proof wall elastic members 551 to 555. Further, a lower surface portion 52 is formed on the non-skin side of the top surface portion 51 in the thickness direction. The lower surface portion 52 is a region having a predetermined width in the lateral direction between the fold line f2 and the fold line f3. The lower surface portion 52 is provided with leak-proof wall elastic members 555 to 556. Note that the leak-proof wall elastic member 555 is provided at both the top surface portion 51 and the bottom surface portion 52 because it is disposed at substantially the same position as the fold line f2 in the lateral direction as described above.

  In the leak-proof wall 50, partial areas of the top surface portion 51 and the bottom surface portion 52 are joined in the thickness direction via the folding joint portion 61. That is, the surfaces on one side in the thickness direction of the leak-proof wall 50 (sheet member 50s) are joined by the folding joint 61. Hereinafter, a region on the inner side in the lateral direction from the portion where the folded joint portion 61 is formed in the leak-proof wall 50 is also referred to as a folded portion 53. In the present embodiment, a fold joint portion 61 indicated by a hatched portion in FIG. 5 is provided in a region on the inner side in the horizontal direction of the top surface portion 51 (lower surface portion 52), and a fold portion 53 is formed. The folding joint 61 is formed by using an adhesive means using an adhesive such as a hot melt adhesive, or a crimping means such as embossing. Note that the folding joint portion 61 does not need to be formed over the entire lateral direction of the folding portion 53 as shown in FIG. 5; for example, it is folded at the lateral inner end (the position of the folding line f2 in FIG. 5). The joining part 61 may not be formed. On the other hand, in the laterally outer region where the folding joint 61 is not provided, the top surface 51 and the bottom surface 52 are not joined, and both can be detached in the thickness direction. Hereinafter, the outer side of the top surface portion 51 in the lateral direction from the portion where the folded joint portion 61 is provided is also referred to as a single layer portion 54. The “single layer” referred to here means a layer composed only of the top surface portion 51, and the top surface portion 51 itself may have a multilayer structure as shown in FIG.

  In the region outside the longitudinal direction of the folding joint 61, the folding joint 61 is not provided. That is, in the leakage preventing wall 50, the one side surface in the thickness direction of the leakage preventing wall 50 (sheet member 50 s) is in the region on the one side and the region on the other side of the folding joint 61 in the longitudinal direction. It has the non-joining part 62 which is not joined. As shown in FIG. 3B, the non-joint portion 62 is not joined to the top surface portion 51 and the bottom surface portion 52 of the leak-proof wall 50, so the folding portion 53 is not formed, and the lateral direction of the top surface portion 51 is not formed. The entire region is a single layer part. In FIG. 1, the non-joining portions 62 are provided on both outer sides in the longitudinal direction of the folding joint portion 61, but the non-joining portions 62 may be provided only on one side in the longitudinal direction.

  Further, end joints 63 are provided at both ends 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 bottom surface portion 52 of the leak-proof wall 50 are joined, and the bottom surface portion 52 and the top sheet 20 are joined. Thereby, the top surface part 51 and the lower surface part 52 are fixed to the skin side surface of the top sheet 20 at the end in the longitudinal direction of the leak-proof wall 50. In addition, as FIG. 1 shows, the end junction part 63 is arrange | positioned in the horizontal direction outer side rather than the folding joint part 61, and, thereby, the horizontal direction outer side edge part of the top | upper surface part 51 may rise. It is suppressed.

  In the diaper 1 of the present embodiment, the leak-proof wall 50 has the above-described substantially S-shaped bent structure (see FIG. 5), so that it is difficult for the wearer to feel uncomfortable even when excretion is performed. However, it can suppress that a clearance gap arises in a crotch part. Drawing 6A is a figure explaining the wearing state of diaper 1 before excretion is performed. Drawing 6B is a figure explaining the wearing state of diaper 1 after excretion is performed.

  In the wearing state of the diaper 1 shown in FIG. 6A, the top surface portion 51 arranged on the skin side of the leak-proof wall 50 comes into contact with the wearer's body. That is, it arrange | positions so that the whole top | upper surface part 51 may surface-contact with a wearer's body. The folding part 53 of the top surface part 51 has high rigidity by being joined by the folding joint part 61 in a state where the top surface part 51 and the bottom surface part 52 are laminated. Therefore, when the contraction force by the leak-proof wall elastic members 555 and 556 acts on the folded portion 53, the folded portion 53 is firmly pressed against the wearer's body while maintaining the surface shape. At this time, the distance between the pair of leak-proof walls 50 in the horizontal direction (the distance between the folded portions 53 and 53 in the horizontal direction) is defined as W50. On the other hand, in the top surface portion 51, the single-layer portion 54 laterally outer than the folding joint portion 61 is provided with more leak-proof wall elastic members 551 to 554 than the folding joint portion 61 than the lateral inner side. Yes. Since the single layer portion 54 has lower rigidity than the folding portion 53, it is easily deformed freely. Therefore, when the contraction force by the leak-proof wall elastic members 551 to 554 arranged on the single layer part 54 acts, the single layer part 54 presses against the skin side of the wearer while forming a curved surface according to the unevenness of the body. It is done. In addition, the plurality of leak-proof wall elastic members 551 to 554 can effectively prevent the single layer portion 54 from being rolled up.

  Thereby, the whole top | upper surface part 51 of the leak-proof wall 50 can be made to fit a wearer's body by a surface. In addition, since the top surface portion 51 is in surface contact with the wearer's body, the surface pressure acting on the wearer's skin as the entire top surface portion 51 is dispersed by the contraction force by the plurality of leak-proof wall elastic members 551 to 556 being dispersed. It is getting bigger. Therefore, compared with the case where the contraction force by a plurality of leak-proof wall elastic members 551 to 556 (for example, rubber thread) individually acts on the wearer's skin, the local increase in pressure is suppressed. Thus, it is possible to prevent the wearing comfort of the diaper 1 from deteriorating and to hardly damage the wearer's skin.

  In the present embodiment, at least one leak-proof wall elastic member 556 is provided on the lower surface portion 52 of the folding portion 53 (see FIG. 5). As the leak-proof wall elastic member 556 contracts, the lower surface portion 52 and the top surface portion 51 are simultaneously pushed up toward the wearer's skin, so that the folding portion 53 maintains contact with the wearer's skin while maintaining the surface shape. (Surface contact) is easier.

  At this time, it is desirable that the leak-proof wall elastic member 556 is disposed at the same position as the folding joint 61 or inside the folding joint 61 in the lateral direction. If the leak-proof wall elastic member 556 is disposed on the outer side in the lateral direction than the folding joint 61, the expansion and contraction force due to the leak-proof wall elastic member 556 does not substantially act on the folding part 53. It becomes difficult to push up the part 53 to the wearer's skin side with the surface shape. On the other hand, if the leak-proof wall elastic member 556 is disposed below or inside the folding joint portion 61, the expansion and contraction force of the leak-proof wall elastic member 556 is applied to the folding portion 53 via the folding joint portion 61. Since it acts over a wide range, it becomes easy to bring the folding part 53 into surface contact with the wearer's skin.

  When excretion is performed in the diaper 1 in the state of FIG. 6A, the absorber 11 absorbs urine and the like, becomes heavy, and tries to move so as to hang down. However, in the diaper 1 of this embodiment, the force which pushes the top surface part 51 upward (the wearer's skin side) is generated by the contraction force of the plurality of elastic members provided in the folding part 53 and the single layer part 54. As a result of the increase in the receipt of the absorbent body 11, the leakage prevention wall 50 becomes a drag force against the pulling force. Further, since the top surface portion 51 is in surface contact with the wearer's skin, the friction on the contact surface is large, and the positional displacement of the top surface portion 51 hardly occurs. Therefore, the horizontal interval W50 between the pair of leak-proof walls 50 is unlikely to fluctuate before and after excretion. From these things, it is easy to maintain the state which the top | upper surface part 51 of the leak-proof wall 50 contact | abutted the wearer's skin like FIG. 6B, and it becomes difficult to produce problems, such as a clearance gap producing in the leg periphery part of the diaper 1. .

  In addition, the sag of the absorbent body 11 is more likely to occur as the standing part 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 absorbent body 11 to the portion where the leak-proof wall 50 comes into contact with the wearer's skin, the easier the absorbent body 11 hangs down. Become. In this regard, in the leak-proof wall 50 of the diaper 1, the distance L <b> 2 is relatively shortened by the formation of the folding portion 53. That is, by folding a part of the leak-proof wall 50 by the folding portion 53, the rising portion of the leak-proof wall 50 is lowered, so that the absorbent body 11 is prevented from drooping greatly downward, which is inconvenient for the wearer. It can make it difficult to give pleasure.

  Moreover, as FIG. 1 shows, the folding junction part 61 (folding part 53) is formed in the area | region of the constriction part 11c of the absorber 11 in the longitudinal direction. In other words, the pair of folded joint portions 61 formed on both sides in the lateral direction do not overlap with the absorber 11 in the thickness direction, and the interval between the pair of folded joint portions 61 in the lateral direction is It is narrower than the length (width) of both ends in the longitudinal direction of the absorbent body 11 in the lateral direction. In the region of the absorber 11 where the constricted portion 11c is formed, the distance from the lateral end portion of the absorber 11 to the upright base 50rp of the leak-proof wall 50 becomes longer (see FIG. 5), and accordingly the absorber 11 correspondingly. The sag is likely to occur. Therefore, by providing the leak-proof wall 50 with the fold joint portion 61 in this region and folding the leak-proof wall 50 with the fold portion 53, the distance L2 can be made as short as possible to effectively suppress the sag of the absorber 11. I am doing so. Furthermore, the portion where the rigidity is increased by the folding joint portion 61 of the leak-proof wall 50 is worn by the absorbent body 11 by forming the folding joint portion 61 so as not to overlap the absorbent body 11 in the thickness direction. It is suppressed from being 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 absorption pad>
The diaper 1 of this embodiment can be used with the liquid-absorbing 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. 8A is a schematic cross-sectional view taken along line EE in FIG. 8B is a schematic cross-sectional view taken along the line FF in FIG. In addition, each direction (horizontal direction etc.) in FIG.7 and FIG.8A, FIG.8B respond | corresponds to each direction in FIG.1 and FIG.3.

  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 ends in the longitudinal direction and a portion between one end and the other end in the longitudinal direction as shown in FIG. Have. The absorbent pad 100 includes a pad absorbent body 110, a top sheet 120, a back sheet 130, and an absorbent pad leakage preventing wall 150. Each member is arranged so as to overlap in the thickness direction as shown in FIG. 8, and is joined to each other using a hot-melt adhesive or other joining means in a region indicated by a hatched portion.

  The pad absorbent body 110 is formed by molding liquid absorbent fibers such as pulp fibers into a predetermined shape, and a superabsorbent polymer (so-called SAP) or the like is mixed in the pad absorbent body 110, and liquid (excrement) such as urine. ) Is absorbed and retained. As shown in FIG. 7, the planar shape of the pad absorbent body 110 is a substantially gourd type similar to that of the absorbent pad 100. That is, the abdomen wide part 110la having the widest lateral width on the ventral side (and the back side) in the longitudinal direction, and the dorsal wide part 110lb having the widest lateral width on the back side in the longitudinal direction, The narrow side portion 110s has the narrowest lateral width between the abdomen wide portion 110lа and the back wide portion 110lb (that is, between both longitudinal ends of the pad absorbent body 110). The narrow portion 110s is a portion that is provided in a region on the abdomen side of the center position CL100 in the longitudinal direction and abuts against the wearer's groin when the pad absorbent body 110 is worn (used). Therefore, by narrowing the width of the region, it is difficult to hinder the movement of the wearer's leg during wearing, and the pad absorbent body 110 can be prevented from eating on the wearer's skin. In the present embodiment, the lateral width W110l of the wide portions 110la and 110lb is about 220 mm, and the lateral width W110s of the narrow portion 110s is about 150 mm.

  A slit 111 that penetrates the pad absorbent body 110 in the thickness direction is provided along the longitudinal direction at the lateral center of the narrow portion 110s. Since the pad absorbent body 110 has low rigidity at the slit 111 portion, the pad absorbent body 110 is easily deformed in accordance with the wearer's body shape when the absorbent pad 100 is worn. Further, the pad absorbent body 110 is covered with an outer peripheral surface by a core wrap sheet 112 (for example, a tissue) in the same manner as the absorbent body 11 of the diaper 1. Further, 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 so as to overlap in the thickness direction of the pad absorber 110. However, the core wrap sheet 112 and the second pad absorber 115 are not necessarily 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 contacts the wearer's skin when the absorbent pad 100 is worn. The top sheet 120 is formed of, for example, an air-through nonwoven fabric or a spunbond nonwoven fabric. The back sheet 130 is a sheet member disposed on the non-skin side of the pad absorbent body 110 in the thickness direction. The back sheet 130 includes 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 absorbent body 110, and is formed of, for example, a resin film. The outer layer sheet 132 is a flexible sheet-like member that is disposed on the non-skin side of the back film 131 while being stacked in the thickness direction, and is formed of, for example, a spunbond nonwoven fabric.

  In the back sheet 130, the width of the back film 131 in the horizontal direction may be narrower than the width of the outer layer sheet 132 in the horizontal direction (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 is reduced, and the rigidity of the outer end 130e can be reduced. The outer end portion 130eо is a portion that becomes the laterally outer end portion 100se of the absorbent pad 100, and is inserted into a space SP50 formed between the leak-proof walls 50 when inserted into the diaper 1 as will be described later. It is a part to be done. For this reason, the rigidity of the outer end portion 130e is reduced to facilitate deformation, whereby the absorbent pad 100 is less likely to interfere with the leak-proof wall 50, and the operation of inserting into the diaper 1 is facilitated.

  A pair of absorbent pad leak-proof walls 150 are provided on both lateral sides of the side surface of the pad absorbent body 110. The absorbent pad leak-proof wall 150 is disposed so that at least a part of the region including the inner end 150ei in the horizontal direction overlaps the skin side surface of the top sheet 120 in the thickness direction. Then, as shown in FIG. 8A, the top sheet 120 is joined to the top sheet 120 via joining parts 155 formed by hot melt adhesive or the like at both lateral ends of the top sheet 120. In addition, the regions on both lateral sides of the pad absorbent body 110 are bonded to the back sheet 130 (back film 131) via a bonding portion 156 formed by a hot melt adhesive or the like. The absorbent pad elastic member 151 is joined to the inner end 150ei in the lateral direction of the absorbent pad leakage preventing wall 150 in a state where the absorbent pad elastic member 151 is stretched at a predetermined stretch ratio in the longitudinal direction. When the absorbent pad 100 is worn, the absorbent pad leak-proof wall 150 rises from the lateral end portions of the pad absorbent body 110 to the skin side in the thickness direction with the joint portion 155 as a base point due to the contraction force of the absorbent pad elastic member 151. Thereby, it is suppressed that excrement leaks to the lateral direction outside of absorption pad 100.

  On the other hand, as shown in FIG. 7 and FIG. 8B, in the end region in the longitudinal direction, the joint portion 157 formed by hot melt adhesive or the like in the vicinity of the lateral inner end portion 150 ei of the absorbent pad leakage preventing wall 150. It is joined to the top sheet 120 via. Therefore, when the absorbent pad 100 is worn, the absorbent pad leakproof wall 150 does not stand up in the thickness direction in the end region in the longitudinal direction.

<About wearing diapers 1>
A method of wearing the diaper 1 when using the absorbent pad 100 will be described. FIG. 9 is a diagram for explaining the wearing operation of the diaper 1.

  When using the absorbent pad 100 with the diaper 1 of this embodiment, first, only the absorbent pad 100 is arrange | positioned between a wearer's crotch (absorption pad arrangement | positioning process). FIG. 9A shows a state in which the absorbent pad 100 is disposed between the wearer's crotch. By arranging the absorbent pad 100 directly on the wearer's body, the position of the absorbent pad 100 can be easily adjusted with respect to the position of the excretion opening, and the absorbent pad 100 is twisted or twisted in the operation of placing the absorbent pad 100. If this happens, it can be corrected immediately. Thereby, it is suppressed that excrement leaks from absorption pad 100 at the time of wearing of diaper 1.

  Some people who are active in wheelchairs or the like have difficulty in controlling urination by themselves. In such a case, in a conventional diaper, urine leakage may occur during the operation of attaching / detaching the diaper, and urine may adhere to clothing or the like. On the other hand, if the absorbent pad 100 can be arranged directly at the position of the excretion opening as in the present embodiment, it is possible to suppress the problem that urine etc. leaks to the clothes side during the attaching / detaching operation of the diaper 1. it can.

  Subsequently, the diaper 1 is caused to be worn by the wearer so that the absorbent main body 10 overlaps the non-skin side of the absorbent pad 100 in a state of being placed on the wearer's body (wear process). FIG. 9B shows a state in which the wearer wears the diaper 1. In the main wearing process, the wearer can be made to wear the diaper 1 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 diaper 1 is attached to the diaper 1 and then the wearer tries to wear the diaper 1, the urine may be inadvertently excreted, such as residual urine, within a few seconds until it is pulled up to the waist. Not only the pad but also the clothes or the surroundings of the exchange place may be soiled. Moreover, the diaper 1 will be in a state of being stiff due to the thickness of the absorbent main body 10 of the diaper 1 and the thickness of the absorbent pad 100, and it may be difficult to fit the diaper 1 to the wearer's body. Moreover, in the operation | movement which puts on the diaper 1, the position of the absorption pad 100 may shift | deviate with respect to the position of an excretion opening | mouth, and there exists a possibility that excrement may leak from the absorption pad 100 or the absorptive main body 10 easily.

  On the other hand, according to the mounting method of this embodiment, while making it easy to fit the diaper 1 in a wearer's body, the position shift of the absorption pad 100 can be suppressed and it can be made hard to produce a leak. Moreover, since it becomes difficult to produce the position shift at the time of making the diaper 1 wear, the top surface part 51 of the leak-proof wall 50 becomes easy to fit tightly on a wearer's body as mentioned above, and when the diaper 1 is worn The fit is further improved. Moreover, the diaper 1 and the leak-proof wall 50 of this embodiment have a structure which can insert the absorption pad 100 easily even if it is the state which made the wearer wear the diaper 1 so that it may mention later. It is suitable for this mounting method.

  Subsequently, the absorbent pad 100 is inserted into the skin side surface of the absorbent main body 10 of the diaper 1 (insertion step). Here, “inserting” the absorbent pad 100 into the diaper 1 means attaching the absorbent pad 100 so that a positional shift does not occur with respect to the diaper 1. In the wearing process, in a state where the absorbent pad 100 and the absorbent main body 10 are simply stacked, there is a possibility that excrement may leak due to a positional shift 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 with respect to the diaper 1. In the present embodiment, the absorbent pad 100 is inserted into the diaper 1 so 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 where the absorbent pad 100 is inserted into the diaper 1. FIG. 10 shows a cross section at a position where the lateral 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 with the longitudinal center position CL10 of the absorbent body 10 and the longitudinal center position CL100 of the absorbent pad 100 being aligned. The space SP50 between the skin side surface of the top sheet 20 of the diaper 1 and the non-skin side surface of the folded portion 53 (folded joint portion 61) of the leakage preventing wall 50 (represented by the hatched portion in FIG. 10) To be housed (inserted). Accordingly, the lateral end portion 100se of the absorbent pad 100 is pressed by the leak-proof wall 50 and the top sheet 20, and the absorbent pad 100 is firmly held on the skin side of the absorbent main body 10.

  FIG. 11 is a diagram illustrating a state when the absorbent main body 10, the leak-proof wall 50, and the absorbent pad 100 are extended in the lateral direction from the state of FIG. 10. In this embodiment, the dimension of the predetermined part of the absorption pad 100 and the diaper 1 is adjusted so that the horizontal direction edge part 100se of the absorption pad 100 may be accommodated in space SP50 comfortably. That is, as shown in FIG. 11, the width W10 in the lateral direction of the absorbent main body 10 when the length of the absorbent main body 10 and the leak-proof wall 50 are extended in the horizontal direction so that the length is maximum, A total value (W10 + 2 × h50) of the distance h50 between the lateral end 10e of the absorbent main body 10 and the folded joint 61 in the leakage wall 50 is the maximum length of the absorbent pad 100. In this way, the width W100 of the absorbent pad 100 when stretched in the lateral direction and the total value (W100 + 2 × t100) of twice the maximum thickness t100 of the absorbent pad 100 are made larger. Each dimension has been 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 length of the absorbent main body 10 and the leak-proof wall 50 is maximum as described above. The dimension when it is extended in the lateral direction is defined. Therefore, if the relationship of (W10 + 2 × h50)> (W100 + 2 × t100) is established when the dimensions are compared in the extended state as shown in FIG. 11, the absorbent pad 100 does not interfere with the leak-proof wall 50. Can be inserted into the diaper 1. In addition, in the state of FIG. 11, since the absorbent body 11 is not disposed at the positions of the both ends 10eо in the lateral direction of the absorbent main body 10, the thickness t10eо of the absorbent main body 10 at both ends 10eо is substantially ignored. Can do.

  In addition, in the position where the horizontal direction length (width) of the back sheet 30 (outer layer sheet) becomes the smallest, the length of the width W10 of the absorbent main body 10 is about 200 mm and the length of the distance h50 of the leak-proof wall 50. Is about 25 mm. Similarly, the length of the width 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.

  Further, as shown in FIG. 10, in the state where the absorbent pad 100 is inserted into the diaper 1, the distance W50 between the inner ends in the lateral direction of the pair of folded joint portions 61 (folded portions 53) is absorbed at least in a part in the longitudinal direction. The pad 100 is adjusted to have a portion narrower than the lateral width W100 (W100> W50). In the present embodiment, the length of the interval W50 between the pair of folded joint portions 61 is about 140 mm (210 mm> 140 mm). Thereby, it is suppressed by the pair of folding joint portions 61 that the absorbent pad 100 moves from the non-skin side in the thickness direction to the skin side. That is, since the absorbent pad 100 is pressed and held firmly in the thickness direction by the folded joint portion 61 (folded portion 53), the absorbent pad 100 is prevented from being detached from the diaper 1.

  Further, in the state of FIG. 10, the interval W150 between the inner end portions 150ei in the lateral direction of the pair of absorbent pad leakproof walls 150 is narrower than the interval W50 between the inner ends in the lateral direction of the folded joint portion 61 (W50> W150). . That is, in a state in which the absorbent pad 100 is inserted into the diaper 1, a pair of absorbent pad leakproof walls 150 (inner end portions 150ei) stand up inside the pair of leakproof walls 50 in the lateral direction. In this arrangement, double leakage barriers are provided. Thereby, it becomes easier to suppress the excrement from leaking out of the diaper 1. In addition, as for the leak-proof wall 50 of the diaper 1, the space | interval W50 is hard to fluctuate even if the top | upper surface part 51 fits a wearer's body tightly as mentioned above, and a wearer moves a body. Therefore, even when the wearer moves his / her body with the absorbent pad 100 inserted into the diaper 1, the interval W150 of the absorbent pad leakage barrier wall 150 is prevented from being excessively widened, and good fit is maintained. In addition, the function as a leak-proof wall is ensured, and the side leakage of excrement is less likely to occur.

  In the state of FIG. 10, the lateral width W110 of the pad absorbent body 110 (absorbent pad 100) is wider than the lateral width W11 of the absorbent body 11 (absorbent body 10) (W110> W11). Thereby, compared with the case where the diaper 1 is used without using the pad absorber 110, it is possible to increase the absorption capacity of excrement and the like. That is, by using the absorbent pad 100 in combination, it is possible to make the diaper exchange interval longer. According to the diaper 1 of the present embodiment, the leakage preventing wall 50 is provided with the folded portion 53 (folded joint portion 61), so that even the wide pad absorbent body 110 (absorbent pad 100) can be comfortably provided. It becomes possible to insert. Since it becomes easy to accommodate the absorbent pad 100 having a large amount of absorption in the solid body of the diaper 1 (leakage barrier 50), the wearer can spend a state of wearing a pants-type diaper that is easy to move at night. This makes it possible to spend all day in a pants-type diaper, making daily life more comfortable.

  In addition, when the amount of excrement absorption by the absorption pad 100 increases, there is a risk that the weight increases and it tends to hang down. However, since the diaper 1 of the present embodiment has a structure that is unlikely to hang down by the folding portion 53 provided in the leak-proof wall 50, the absorbent pad 100 held by the diaper 1 is also unlikely to hang down. Problems are unlikely to occur even if the amount of excreta absorbed increases. In addition, as described with reference to FIG. 9, since the operation when replacing the absorbent pad 100 is easy and misalignment or the like hardly occurs, a person who wears the diaper 1 (absorbent pad 100) (for example, a caregiver, hereinafter , Also referred to as the user).

  Further, in the above-described insertion step, when the absorbent pad 100 is inserted into the diaper 1 as shown in FIG. 10, a finger is inserted into the space SP50 and the folding portion 53 (folded joint portion 61) of the leak-proof wall 50 is set in the lateral direction. After being pulled out to the outside, an operation of placing the pad so as to cover the skin side of the absorbent pad 100 is performed. In the leak-proof wall 50 of the diaper 1, the leak-proof wall elastic members 551-555 are arrange | positioned so that such operation | movement may be performed easily. Specifically, the plurality of leak-proof wall elastic members 551 to 554 arranged on the outer side in the lateral direction than the folding joint portion 61 are arranged on the inner side in the lateral direction with respect to the distance d55a in the lateral direction. Among the leak-proof wall elastic members 55, the leak-proof wall elastic member 555 located on the outermost side and the innermost side among the plurality of leak-proof wall elastic members 55 arranged laterally outward from the folding joint 61 Each elastic member is arranged so that the distance d55b in the lateral direction with respect to the leak-proof wall elastic member 554 that is positioned is wider (d55a <d55b).

  In the region laterally outward from the folded joint portion 61, a plurality of leak-proof wall elastic members 551 to 554 are disposed, and the interval d55a is reduced, so that the leak-proof wall 50 (top surface portion 53) is reduced in the region. It makes it easy to fit tightly on the wearer's skin (see FIGS. 5 and 10). On the other hand, by widening the gap d55b between the leak-proof wall elastic members 554 and 555 in the laterally inner region, when the finger is inserted into the space SP50 in the insertion process, the tip of the finger has the gap d55b. It is easy to get caught in between. In the insertion step, when the diaper 1 is worn by the wearer, the folding portion 53 is in a position that is difficult to visually recognize from the outside. However, in this embodiment, by making it easy to hook a finger on the space d55b of the leak-proof wall 50, the folded portion 53 (folded joint portion 61) is absorbed even when the folded portion 53 is difficult to visually recognize. The operation | movement arrange | positioned to the skin side of the pad 100 can be performed easily. Thereby, it becomes easy to insert the absorption pad 100 correctly in the diaper 1, and the leakage of excrement etc. are suppressed.

  Further, when the interval d55b is narrowed, a large number of leak-proof wall elastic members 55 are arranged in the folding portion 53 located above the space SP50, and a larger contraction force acts on the folding portion 53 by the leak-proof wall elastic member. To come. In this case, the folded portion 53 contracts, making it difficult to insert the absorbent pad 100 into the space SP50, or contracting force acts on the absorbent pad 100 itself, causing irregularities and wrinkles on the surface of the absorbent pad 100, and wearing. There is a risk that it may easily cause a sense of discomfort to the person. On the other hand, in this embodiment, since the space | interval d55b is wide and the contraction force which acts on the folding part 53 is adjusted moderately, it is easy to insert the absorption pad 100, and a wearer feels strange at the time of wear. Hard to generate.

  10 and 11, the relationship between the dimensions (for example, W100 and W10) at the position where the lateral 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 where the narrow portion 110s is formed in the longitudinal direction of the absorbent pad 100. FIG. 12 is a schematic plan view for explaining 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 center position CL10 of the diaper 1 (absorbent body 10) and the longitudinal center position CL100 of the absorbent pad 100 overlap. .

  In the state where the absorbent pad 100 is inserted into the diaper 1 in FIG. 12, the narrow portion 110s of the absorbent pad 100 and the folded joint portion 61 of the diaper 1 overlap in the thickness direction. In this overlapping region, 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, the interval W50 of the folded joint 61, is the same as in the case of FIG. Therefore, at least in the region where the narrow portion 110s is provided in the longitudinal direction, the absorption pad 100 can be folded and held firmly between the joint portions 61, and misalignment is unlikely to occur. Is unlikely to occur.

  Furthermore, the length of the folded joint portion 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 and the position of the absorbent pad 100 in the longitudinal direction are deviated, if the folded joint portion 61 and the narrow portion 110s of the diaper 1 are within the overlapping range in the thickness direction, Since the state of FIG. 10 is maintained, the absorbent pad 100 is firmly inserted into the diaper 1. In other words, even when a displacement in the longitudinal direction occurs between the absorbent pad 100 and the diaper 1 in the insertion process, the absorbent pad 100 can be inserted into the diaper 1.

  Further, in the region where the non-joining portion 62 is formed in the longitudinal direction of the leak-proof wall 50, the leak-proof walls 50 are not joined to each other, so that the rigidity is low and the shape is easily deformed. Therefore, when inserting the absorption pad 100, it is easy to insert the lateral end portion 100se of the absorption pad 100 into the portion where the non-bonding portion 62 is formed. That is, the non-joint portion 62 functions as a pocket in the leak-proof walls 50 provided on both the left and right sides, and the absorbent pad 100 is completely accommodated. Actually, in the present embodiment, as shown in FIG. 12, in the region where the non-bonding portion 62 is formed, the wide portion W100l having the widest lateral width of the absorbent pad 100 can be accommodated. ing.

  On the other hand, in the end joint part 63 provided outside the non-joint part 62 in the longitudinal direction of the leak-proof wall 50, the leak-proof wall 50 is fixed to the skin side surface of the top sheet 20. The horizontal interval between the joints 63 is narrower than the wide portion W100l of the absorbent pad 100. Therefore, even if the position of the absorbent pad 100 accommodated in the non-joint portion 62 is shifted in the longitudinal direction (vertical direction), the wide portion W100l of the absorbent pad 100 is caught by the end joint portion 63, so that the absorbent pad 100 is longitudinal. It can suppress moving outside. Thereby, it is suppressed that the absorption pad 100 protrudes to the outer side of the diaper 1 in the vertical direction, and excrement is less likely to leak to the outside.

  In addition, in the insertion process mentioned above, when the user (for example, caregiver) who wears the diaper 1 inserts a finger into space SP50 and performs the operation | movement which draws out the leak-proof wall 50 to the skin side of the absorption pad 100, this space SP50. When the finger is moved along the longitudinal direction (longitudinal direction) with the finger placed in the position, the finger hits the joining portion 63 at the boundary between the non-joining portion 62 and the end joining portion 63 to stop the movement of the finger. Thereby, the user can recognize the area | region in which the non-joining part 62 and the folding joint part 61 of the leak-proof wall 50 are formed in the longitudinal direction by a finger sense without visually recognizing. Therefore, the position of the pocket into which the wide portion W100l of the absorbent pad 100 is to be inserted (the position where the non-joint portion 62 is provided) is unlikely to be mistaken, and the absorbent pad 100 can be firmly accommodated between the leak-proof walls 50. .

  In the present embodiment, the length of the diaper 1 in the longitudinal direction (distance between both ends in the longitudinal direction) is set in the longitudinal direction of the absorbent pad 100 with the diaper 1 and the absorbent pad 100 extended in the longitudinal direction. It is longer than the length (distance between both ends in the longitudinal direction). That is, when the diaper 1 is worn, the entire absorbent pad 100 can be accommodated inside the diaper 1 in the longitudinal direction (longitudinal direction), and absorbed from the ventral end or the back end in the longitudinal direction. It becomes difficult for the pad 100 to protrude. Thereby, it can suppress that excrement leaks to the outer side of the diaper 1 from the stomach side or back side of a longitudinal direction (vertical direction).

  Furthermore, as shown in FIG. 12, the distance between the longitudinal ends of the absorbent pad 100 is the longitudinal inner end (end 30eа) of the ventral folded portion 30fa and the longitudinal length of the dorsal folded portion 30fb. It is shorter than the distance in the longitudinal direction between the direction inner end (end 30eb). The end 30eа of the ventral side folded portion 30fa is a dry edge not provided with an adhesive or the like, and in the end 30eа, the ventral side folded portion 30fa and the absorbent main body 10 (and the leak-proof wall 40) 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 portion in the longitudinal direction of the absorbent pad 100 is a gap between the ventral folded portion 30fa and the absorbent main body 10 (end portion 30eа). It can be caught by the dry edge formed in (3), and the position shift to the ventral side in the longitudinal direction can be stopped. Similarly, in the back folded portion 30fb, the end portion 30eb is a dry edge where no adhesive or the like is provided, and in the end portion 30eb, the back folded portion 30fb is connected to the absorbent main body 10 (and the leak-proof body). It is not joined to the wall 40). Therefore, even if the position of the absorbent pad 100 is shifted to the back side in the longitudinal direction, the back side end portion in the longitudinal direction of the absorbent pad 100 is formed in the gap between the back side folded portion 30fb and the absorbent main body 10 (the end portion 30eb is formed). It is caught by the dry edge), and the positional deviation to the back side in the longitudinal direction can be stopped.

=== 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, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above-described embodiment, the example in which the thread rubber is used as the waistline elastic member and the leak-proof wall elastic member has been described. However, these elastic members are not limited to a linear elastic member such as a so-called thread rubber. For example, a planar (strip-shaped) elastic member having a predetermined width may be used. Further, the sheet member constituting the leak-proof wall or the back sheet may be a stretchable sheet member (for example, a stretchable nonwoven fabric), so that an elastic member such as rubber thread need not be provided separately.

  In the above-described embodiment, the outer layer sheet 30 has the constricted portion 30c, and the length (width) in the lateral direction of the outer layer sheet 30 is changed at a predetermined position in the longitudinal direction. The outer layer sheet 30 may not have the constricted portion 30c. For example, the lateral length of the outer layer sheet 30 may be equal in a certain range in the longitudinal direction. In such a case, the above-mentioned “position where the lateral length of the outer layer sheet is the minimum in the longitudinal direction” is the position on the backmost side of the portion having the same length in the lateral direction of the outer layer sheet 30 in the longitudinal direction. Suppose that

1 diapers (pants-type disposable diapers),
3 ventral waistline, 3es ventral side edge,
4 Back side waistline part, 4es back side edge part,
5 Inseam,
10 Absorbent body, 10eо end,
11 Absorber, 11c Constricted part, 11ea end part, 11eb end part,
12 core wrap sheet,
20 Top sheet,
30 back sheet, 30c constricted part, 30ea end part, 30fa ventral side folded part,
30eb end, 30fb dorsal folded part,
31 Back film, 32 Upper outer layer sheet, 33 Lower outer layer sheet,
35a ventral waist elastic member, 35b dorsal waist elastic member,
35 lg back leg elastic member, 35 lgs linear part, 35 lgc curved part,
50 leakage barrier,
50s sheet member, 50ei inner edge, 50eо outer edge, 50rp base,
51 top surface portion, 52 bottom surface portion, 53 folded portion, 54 single layer portion,
55 leak-proof wall elastic member, 551-556 leak-proof wall elastic member,
61 Folding joint, 62 Non-joining part, 63 End joining part, 65 Boundary part,
100 absorbent pad, 100se end,
110 pad absorber,
110 lа ventral wide part, 110 lb dorsal wide part, 110 s narrow part,
111 slit, 112 core wrap sheet, 115 second pad absorber,
120 top sheet,
130 backsheet, 130eо outer edge,
131 back film, 132 outer layer sheet,
150 absorbent pad leakage barrier, 150ei inner end,
151 absorbent pad elastic member, 155 joint, 156 joint, 157 joint,
f1, f2, f3 fold 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 (absorber), W110 width (pad absorber),
W50 interval (folded joint), W150 interval (absorbing pad leakage barrier),
h50 distance, t100 thickness (absorption pad 100),
SP50 space

Claims (14)

An absorbent body comprising an absorbent body having a longitudinal direction and a transverse direction intersecting each other;
A pair of leak-proof walls provided on both lateral sides of the absorbent main body, comprising an elastic member extending and contracting in the longitudinal direction;
An outer layer sheet provided on the non-skin side of the absorbent main body,
A pants-type disposable diaper in which a liquid-absorbing absorbent pad can be attached to and detached from the skin side in the thickness direction of the absorbent main body,
Each of the pair of leak-proof walls has a joining portion in which surfaces on one side in the thickness direction are joined to each other at a position where the length in the lateral direction of the outer layer sheet is minimum in the longitudinal direction.
In the lateral 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. The total value of the width in the lateral direction and twice the distance between the lateral end of the absorbent main body and the joint portion of the leakage prevention wall 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 is maximized in the lateral direction. Greater than the sum of the lateral width and twice the thickness of the absorbent pad,
When the absorbent pad is inserted into the pants-type disposable diaper,
The gap between the inner ends of the pair of joint portions in the lateral direction has a portion that is narrower than the lateral width of the absorbent pad,
A plurality of leak-proof wall elastic members extending and contracting in the longitudinal direction are provided in the leak-proof wall side by side in the lateral direction,
In the lateral direction, the number of the leak-proof wall elastic members arranged outside the joint portion is larger than the number of the leak-proof wall elastic members arranged inside the joint portion ,
The back waistline portion of the outer layer sheet is provided with a back waistline elastic member and a back leg elastic member,
The back waistline elastic member is disposed along the lateral direction,
The dorsal leg-hole elastic member is curved toward the outer side in the lateral direction from a linear portion disposed along the lateral direction at the lateral central portion, and both lateral sides of the linear portion. The linear portion has a portion overlapping the absorber,
The pants-type disposable diaper , wherein the back leg elastic member is arranged so that an extension magnification in the straight portion is lower than an extension magnification of the back waist elastic member . The pants-type disposable diaper according to claim 1,
The absorbent pad has a pair of absorbent pad leakproof walls on both sides in the lateral direction,
In the minimum position,
The distance between the pair of absorbent pad leakage barriers in the lateral direction is:
A pants-type disposable diaper characterized by being narrower than an interval between inner ends of the pair of joint portions in the lateral direction. The pants-type disposable diaper according to claim 1 or 2,
In the lateral direction, more than the lateral spacing of the plurality of leak-proof wall elastic members disposed outside the joint portion,
In the lateral direction, among the leakage preventing wall elastic members arranged on the inner side than the joint portion, the leakage preventing wall elastic member located on the outermost side and the leakage preventing material arranged on the outer side than the joining portion. A pants-type disposable diaper, characterized in that, in the wall elastic member, the lateral spacing with the leakproof wall elastic member located on the innermost side is wider. The pants-type disposable diaper according to any one of claims 1 to 3,
The absorbent pad has a liquid absorbent pad absorber,
In the minimum position,
In the lateral direction, the width of the pad absorbent when the pad absorbent is extended so that the length of the pad absorbent is maximized,
A pants-type disposable diaper characterized in that, in the lateral direction, the absorbent body is wider than the absorbent body when the absorbent body is extended so that the length of the absorbent body is maximized. The pants-type disposable diaper according to claim 4,
The pad absorber has a narrow portion where the width in the lateral direction is the narrowest 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,
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 5,
The absorber has a constricted portion between both end portions of the absorber in the longitudinal direction,
In the thickness direction, the pair of joint portions do not overlap with the absorber,
The pants-type disposable diaper characterized in that, in the lateral direction, a distance between the pair of joint portions is shorter than a length at both end portions in the longitudinal direction of the absorbent body. The pants-type disposable diaper according to any one of claims 1 to 6,
An inner layer sheet provided on the skin side of the absorbent main body,
The pair of leakage barriers is
At both ends in the longitudinal direction, it has an end joint part joined to the inner layer sheet,
In the longitudinal direction, between the joint portion and the end joint portion, the leakage prevention wall has a non-joint portion that is not joined in the thickness direction,
When the absorbent pad is inserted into the pants-type disposable diaper,
At least a portion of the longest length in the lateral direction of the absorbent pad overlaps with the non-bonded portion in the longitudinal direction;
The pants-type disposable diaper characterized in that an interval between the end joints in the lateral direction is shorter than a maximum length of the absorbent pad in the lateral direction. The pants-type disposable diaper according to claim 1,
The ventral side end portion of the outer layer sheet in the longitudinal direction is folded inward in the longitudinal direction, and the back side end portion in the longitudinal direction of the outer layer sheet is folded back inward in the longitudinal direction. A back folded portion,
The distance between the longitudinal ends of the absorbent pad is:
A pants-type disposable characterized in that it is shorter than the distance in the longitudinal direction between the inner end in the longitudinal direction of the ventral folded portion and the inner end in the longitudinal direction of the dorsal folded portion. Diapers. An absorbent body comprising an absorbent body having a longitudinal direction and a transverse direction intersecting each other;
A pair of leak-proof walls provided on both lateral sides of the absorbent main body, comprising an elastic member extending and contracting in the longitudinal direction;
An outer layer sheet provided on the non-skin side of the absorbent main body,
A liquid absorbent absorbent pad can be attached to and detached from the skin side in the thickness direction of the absorbent main body,
Each of the pair of leak-proof walls has a joining portion in which the surfaces on one side in the thickness direction are joined to each other at a position where the length in the lateral direction of the outer layer sheet is minimum 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 total value of the width in the lateral direction and twice the distance between the lateral end of the absorbent main body and the joint portion of the leak-proof wall,
When the absorbent pad is extended so that the length of the absorbent pad is maximized in the lateral direction, the lateral width of the absorbent pad at the minimum position when worn, and the absorbent pad Greater than the total value of twice the thickness,
A pants type having a portion in which the distance between the inner ends of the pair of joint portions in the lateral direction becomes narrower than the lateral width of the absorbent pad when the absorbent pad is inserted into the pants-type disposable diaper. A pants-type disposable diaper wearing method for causing a wearer to wear a disposable diaper,
Placing the absorbent pad between the wearer's crotch, an absorbent pad placement step;
A wearing step of causing the wearer to wear the pants-type disposable diaper so that the absorbent main body overlaps the non-skin side of the absorbent pad disposed;
Inserting the absorbent pad into the pants-type disposable diaper, and an absorbent pad inserting step,
A plurality of leak-proof wall elastic members extending and contracting in the longitudinal direction are provided in the leak-proof wall side by side in the lateral direction,
In the lateral direction, the number of the leak-proof wall elastic members arranged outside the joint portion is larger than the number of the leak-proof wall elastic members arranged inside the joint portion,
The back waistline portion of the outer layer sheet is provided with a back waistline elastic member and a back leg elastic member,
The back waistline elastic member is disposed along the lateral direction,
The dorsal leg-hole elastic member is curved toward the outer side in the lateral direction from a linear portion disposed along the lateral direction at the lateral central portion, and both lateral sides of the linear portion. The linear portion has a portion overlapping the absorber,
The pants-type disposable diaper mounting method , wherein the dorsal leg-hole elastic member is arranged so that the extension magnification in the straight line portion is lower than the extension magnification of the dorsal waist elastic member . A pants-type disposable diaper mounting method according to claim 9,
The absorbent pad has a pair of absorbent pad leakproof walls on both sides in the lateral direction,
In the minimum position,
The distance between the pair of absorbent pad leakage barriers in the lateral direction is:
A pants-type disposable diaper mounting method characterized by being narrower than a distance between inner ends of the pair of joint portions in the lateral direction. A pants-type disposable diaper mounting method according to claim 10,
In the lateral direction, more than the lateral spacing of the plurality of leak-proof wall elastic members disposed outside the joint portion,
In the lateral direction, among the leakage preventing wall elastic members arranged on the inner side than the joint portion, the leakage preventing wall elastic member located on the outermost side and the leakage preventing material arranged on the outer side than the joining portion. A pants-type disposable diaper mounting method characterized in that the lateral spacing between the wall elastic member and the leakproof wall elastic member located on the innermost side is wider. It is the underpants type disposable diaper mounting method in any one of Claims 9-11,
The absorbent pad has a liquid absorbent pad absorber,
In the minimum position,
In the lateral direction, the width of the pad absorbent when the pad absorbent is extended so that the length of the pad absorbent is maximized,
A method for attaching a pants-type disposable diaper, characterized in that, in the lateral direction, the absorbent body is wider than the absorbent body when the absorbent body is extended so that the length of the absorbent body is maximized. A pants-type disposable diaper mounting method according to claim 12,
The pad absorber has a narrow portion where the width in the lateral direction is the narrowest 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,
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 pants type disposable diaper mounting method characterized by the above-mentioned. It is the underpants type disposable diaper mounting method in any one of Claims 9-13,
The absorber has a constricted portion between both end portions of the absorber in the longitudinal direction,
In the thickness direction, the pair of joint portions do not overlap with the absorber,
The pants-type disposable diaper mounting method, characterized in that, in the lateral direction, an interval between the pair of joint portions is shorter than a length at both ends in the longitudinal direction of the absorbent body.

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