WO2020138058A1

WO2020138058A1 - Pants-type absorbent article and method of attaching absorbent pad

Info

Publication number: WO2020138058A1
Application number: PCT/JP2019/050565
Authority: WO
Inventors: 貴仁永井; 傑田中
Original assignee: ユニ・チャーム株式会社
Priority date: 2018-12-25
Filing date: 2019-12-24
Publication date: 2020-07-02
Also published as: TWI801687B; CN113194899A; CN113194899B; JP6757396B2; BR112021009576B1; BR112021009576A2; JP2020099590A; TW202031217A

Abstract

Provided is a pants-type absorbent article (1) which includes a pair of leakproof wall parts (40) and to which an absorbent pad (100) can be attached, wherein the leakproof wall parts (40) have first connecting parts (61) that connect facing surfaces of a skin side part (42) and a non-skin side part (43) and a pair of second connecting parts (62) that connect the non-skin side part (43) to an absorbent body (10). When the absorbent pad (100) is attached to the pants-type absorbent article (1) such that the pants-type absorbent article (1) and the absorbent pad (100) are centrally aligned in a width direction, the widthwise space (W61) between inner ends of the first connecting parts (61) has a portion that is shorter than the widthwise length (W100) of the absorbent pad (100), and the widthwise space (W62) between inner ends of the second connecting parts (62) has a portion that is less than or equal to the widthwise length (W100) of the absorbent pad (100).

Description

Pants-type absorbent article and method for attaching absorbent pad

The present invention relates to a pants-type absorbent article and a method for attaching an absorbent pad.

As a pants-type absorbent article, a pants-type disposable diaper is known. For example, Patent Document 1 discloses a pants-type disposable diaper having a main body having an absorbent core and a leak-proof cuff (a leak-proof wall) extending in the vertical direction and arranged in the main body at intervals in the horizontal direction. Has been done.

JP 2005-218876 A

In recent years, a disposable absorbent pad is attached to the inside of a pants-type disposable diaper as shown in Patent Document 1, and only the absorbent pad that absorbs excrement is replaced to reduce the frequency of replacement of the pants-type disposable diaper. A method has been proposed. Thus, by using the pants-type diaper and the absorbent pad together, it becomes possible to reduce the labor of the user (wearer) to change the diaper and the economic burden. However, in the conventional method, when the wearer moves the body, the position of the absorbent pad is likely to be displaced, excrement leaks from the absorbent pad, and the fit property deteriorates. It was

The present invention has been made in view of the above conventional problems, and an object thereof is to suppress positional displacement of an absorbent pad when using a pants-type absorbent article and an absorbent pad together. is there.

The main invention for achieving the above object is to have an absorbent main body and two sides in the width direction of the absorbent main body, which have a longitudinal direction, a width direction and a thickness direction intersecting with each other in a developed state. A pair of leak-proof wall portions that can stand on the skin side in the thickness direction, and a pants-type absorbent article in which an absorbent pad can be attached to the skin side in the thickness direction with respect to the absorbent main body. The pair of leak-proof wall portions each have a skin side portion and a non-skin side portion arranged on the non-skin side in the thickness direction with respect to the skin side portion, and the skin side portion and the A pair of first joining portions that join at least a part of facing surfaces that face each other with a non-skin side portion, and a pair of joining at least a portion of the non-skin side portion to the skin side of the absorbent main body. A second joint portion, and in a state where the pants-type absorbent article and the absorbent pad are extended in the longitudinal direction and the width direction, the center of the pants-type absorbent article in the width direction, and When the absorbent pad is attached to the pant-type absorbent article so that the center of the absorbent pad in the width direction is aligned, in the longitudinal direction, in a region in which the pair of first joint portions are arranged. The pair of second joint portions in the longitudinal direction has a portion in which the distance between the inner ends of the pair of first joint portions in the width direction is shorter than the length of the absorbent pad in the width direction. In the region where is disposed, the widthwise interval between the inner ends of the pair of second bonding portions has a portion equal to or less than the widthwise length of the absorbent pad. It is a pants-type absorbent article.
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

According to the present invention, when the pants-type absorbent article and the absorbent pad are used together, it is possible to prevent the positional displacement of the absorbent pad from occurring easily.

It is a front view of pants type disposable diaper 1. It is a schematic plan view of the diaper 1 of a development and extension state. FIG. 3A is a schematic sectional view taken along the line AA of FIG. 3B is a schematic sectional view taken along line BB of FIG. FIG. 3C is a schematic sectional view taken along the line CC of FIG. 3A and 3B are a schematic plan view and a schematic sectional view of an absorbent pad 100. It is a schematic plan view showing the state which attached the absorption pad 100 to the diaper 1 of a development and extension state. FIG. 6A is a schematic cross-sectional view taken along the line DD of FIG. 6B is a schematic sectional view taken along line EE of FIG.

At least the following matters will be made clear by the description in the present specification and the accompanying drawings.
In the unfolded state, it has a longitudinal direction, a width direction, and a thickness direction that intersect with each other, is provided on the absorbent body and both sides of the absorbent body in the width direction, and can stand upright on the skin side in the thickness direction. A pair of leakproof wall portions, and a pants-type absorbent article capable of attaching an absorbent pad to the skin side in the thickness direction with respect to the absorbent main body, wherein the pair of leakproof wall portions are respectively A skin side part and a non-skin side part arranged on the non-skin side in the thickness direction with respect to the skin side part, and the facing surfaces of the skin side part and the non-skin side part facing each other. A pair of first joining portions that join at least a part of each other, and a pair of second joining portions that join at least a portion of the non-skin side portion to the skin side of the absorbent main body, and With the pants-type absorbent article and the absorbent pad extended in the longitudinal direction and the width direction, the center of the pants-type absorbent article in the width direction and the center of the absorbent pad in the width direction are aligned. As described above, when the absorbent pad is attached to the pants-type absorbent article, the inner ends of the pair of first joint portions are located in the region in which the pair of first joint portions are arranged in the longitudinal direction. In the region where the pair of second joints are arranged, in the longitudinal direction, the pair has a pair in which the interval in the width direction is shorter than the length in the width direction of the absorbent pad. The pants-type absorbent article, characterized in that the interval between the inner ends of the second joint portion in the width direction has a portion that is not more than the length in the width direction of the absorbent pad.

According to such a pants-type absorbent article, when the absorbent pad is attached, at least a part of the widthwise end portion of the absorbent pad is absorptive to the pair of first joint portions (leakage prevention wall portions). It becomes possible to insert the absorbent pad into the main body, and the movement of the absorbent pad in the thickness direction is restricted by the first joint portion. Further, the outer edge (edge) in the width direction of the absorbent pad is sandwiched by the pair of second joint portions from both sides in the width direction, and movement of the absorbent pad in the width direction is restricted. This makes it possible to prevent the displacement of the absorbent pad from occurring.

In such a pants-type absorbent article, it is desirable that the center of the second joint portion is located in front of the center of the pants-type absorbent article in the expanded state in the longitudinal direction.

According to such a pants-type absorbent article, when worn, the absorbent pad is sandwiched from both sides in the width direction by the second joint in the region on the front side in the longitudinal direction where the force from both legs of the wearer is likely to act. Therefore, the absorbent pad is suppressed from shifting in the width direction in the region, and the displacement of the absorbent pad is less likely to occur even when the wearer moves the body (both legs).

In such a pants-type absorbent article, it is desirable that the entire second joint portion is located in front of the center of the pants-type absorbent article in the expanded state in the longitudinal direction.

According to such a pants-type absorbent article, it becomes easier to suppress displacement of the absorbent pad in the region on the front side in the longitudinal direction. Therefore, even if the wearer walks or moves his legs largely while wearing the pants-type absorbent article, the displacement of the absorbent pad can be effectively suppressed.

In the pants-type absorbent article, the absorbent main body has an absorbent core, and the absorbent core is a region between a front end portion and a rear end portion in the longitudinal direction, and the width direction. A constricted portion having a reduced length in, the second joint portion overlaps the constricted portion in the longitudinal direction, and is located outside the absorbent core in the width direction, Is desirable.

According to such a pants-type absorbent article, the movement of the wearer's legs is less likely to be hindered by providing the absorbent core with a constricted portion. In addition, by adjusting the positional relationship between the constricted portion and the second joint, even if the wearer greatly moves the leg in the region where the constricted portion is provided, the position of the absorbent pad can be adjusted by the second joint. The shift can be effectively suppressed.

In this pants-type absorbent article, it is desirable that the first joint portion is located inside the tip of the leak preventive wall in the width direction.

According to such a pants-type absorbent article, the strength of the leak-proof wall portion can be increased by the first joint portion in the region on the inner side in the width direction than the tip of the leak-proof wall portion. Thus, when the absorbent pad is attached, the widthwise end portion of the absorbent pad can be stably suppressed by the leak preventive wall portion. Therefore, it is easy to prevent the absorbent pad from coming off.

In this pants-type absorbent article, the absorbent pad has a pair of adhesive portions on both sides in the longitudinal direction, and the first joint portion attaches the absorbent pad to the pants-type absorbent article. At this time, it is desirable that the pair of adhesive parts are located inside the position where the pair of adhesive parts contact the pants-type absorbent product in the longitudinal direction.

According to such a pant-type absorbent article, the absorbent pad is firmly attached and fixed to the skin side of the pant-type absorbent article at the portions where the adhesive portions are provided at both longitudinal ends of the absorbent pad. .. Further, in the region between the adhesive portions in the longitudinal direction of the absorbent pad, the widthwise end portion of the absorbent pad is suppressed from the skin side by the first joint portion (leakage preventing wall portion). Therefore, it is possible to prevent the displacement from occurring easily over the entire length of the absorbent pad in the longitudinal direction.

In such a pants-type absorbent article, it is desirable that a distance between inner ends of the pair of leak-proof wall portions is narrower than a distance between inner ends of the pair of second joint portions in the width direction. ..

According to such a pants-type absorbent article, when the absorbent pad is attached, both end portions in the width direction of the absorbent pad are sandwiched by the pair of second joint portions from the width direction, and the leakage preventing wall portion The inner edge makes it easier to cover from the skin side. Therefore, the displacement of the absorbent pad can be more easily suppressed.

It is desirable that the pants-type absorbent article does not have a portion where the first joint portion and the second joint portion overlap in the longitudinal direction.

According to such a pants-type absorbent article, a portion where the rising height of the leak-proof wall portion is limited by the first joint portion and a portion where the rising height of the leak-proof wall portion is limited by the second joint portion. Since the and are displaced in the longitudinal direction, it is possible to prevent the rising height of the leak preventive wall portion from being significantly limited. Therefore, it is possible to suppress the positional displacement of the absorbent pad and make it difficult for the fit property of the pants-type absorbent article and the lateral leakage of excrement to occur.

In the pants-type absorbent article, in the width direction, a predetermined distance is provided between the outer end of the second joint portion and the outer end of the leak-proof wall portion. desirable.

According to such a pants-type absorbent article, a so-called dry edge is formed at the outer end of the leak preventive wall portion in the width direction. Therefore, when the pants-type absorbent article is worn, the skin contact at the outer end of the leak-proof wall, which is likely to come into direct contact with the skin (legs) of the wearer, becomes soft, and the wearer is less likely to feel discomfort. can do.

Further, in the deployed state, having a longitudinal direction, a width direction, and a thickness direction that intersect with each other, the absorbent main body, and provided on both sides of the absorbent main body in the width direction, on the skin side in the thickness direction. A pair of leak-proof wall parts comprising a pair of leak-proof wall parts that can stand upright, and an absorbent pad that can be attached to the skin side in the thickness direction with respect to the absorbent main body. Each has a skin side part and a non-skin side part arranged on the non-skin side in the thickness direction with respect to the skin side part, and the skin side part and the non-skin side part face each other. It has a pair of 1st joint part which joins at least one copy of opposing surfaces, and a pair of 2nd joint part which joins at least one copy of the said non-skin side part to the said skin side of the said absorptive main body. A center of the pants-type absorbent article in the width direction and a center of the absorbent pad in the width direction in a state where the pants-type absorbent article and the absorbent pad are extended in the longitudinal direction and the width direction. When the absorbent pad is attached to the pants-type absorbent article, at least a part of both end portions of the absorbent pad in the width direction has the first joint portion and the absorbent body in the thickness direction. The pants-type absorbent article is characterized in that it is sandwiched between the absorbent body and both ends of the absorbent pad in the width direction abut the second joint portion in the width direction.

Further, in the deployed state, having a longitudinal direction, a width direction, and a thickness direction that intersect with each other, the absorbent main body, and provided on both sides of the absorbent main body in the width direction, on the skin side in the thickness direction. A pair of leak-proof wall portions that can stand up, with respect to the pants-type absorbent article provided with, an absorbent pad is attached to the skin side in the thickness direction of the absorbent main body, which is an absorbent pad attaching method, Each of the pair of leak-proof wall portions has a skin side portion and a non-skin side portion arranged on the non-skin side in the thickness direction with respect to the skin side portion, and the skin side portion and the non-skin side. A pair of first joining portions that join at least a part of facing surfaces facing each other with a side portion, and a pair of second joining portions that join at least a part of the non-skin side portion to the skin side of the absorbent main body. When attaching the absorbent pad to the pants-type absorbent article so that the center in the width direction of the pants-type absorbent article and the center in the width direction of the absorbent pad are aligned with each other. At least a part of both end portions of the absorbent pad in the width direction is sandwiched between the first joint portion and the absorbent main body in the thickness direction, and both end edges of the absorbent pad in the width direction are inserted. Then, the method for attaching the absorbent pad, which is characterized in that it is brought into contact with the second joint portion in the width direction, becomes clear.

According to such an absorbent pad attaching method, at the time of attaching the absorbent pad, at least a part of the widthwise end portions of the absorbent pad is connected to the pair of first joint portions (leakage prevention wall portions) and the absorbent main body. The first bonding portion restricts the movement of the absorbent pad in the thickness direction. Further, the outer edge (edge) in the width direction of the absorbent pad is sandwiched by the pair of second joint portions from both sides in the width direction, and movement of the absorbent pad in the width direction is restricted. This makes it possible to prevent the displacement of the absorbent pad from occurring.

=== Embodiment ===
Hereinafter, an embodiment will be described by taking a pants-type disposable diaper 1 for adults (hereinafter, also simply referred to as “diaper 1”) as an example of the pants-type absorbent article according to the present invention. However, the diaper 1 according to the present invention can also be used as a pants-type disposable diaper for infants, sanitary shorts and the like.

<Structure of pants-type disposable diaper 1>
FIG. 1 is a front view of a pants-type disposable diaper 1 (diaper 1). FIG. 2 is a schematic plan view of the diaper 1 in a developed and expanded state. FIG. 3A is a schematic sectional view taken along the line AA of FIG. 3B is a schematic sectional view taken along line BB of FIG. FIG. 3C is a schematic sectional view taken along the line CC of FIG. The "extended state" is a state in which each member constituting the diaper 1 is extended without wrinkles. Specifically, the diaper 1 is in a state of being expanded until the size of the member (for example, the sheet member 14 described later) of the diaper 1 becomes equal to or close to the size of the single member.

Diaper 1 has a vertical direction, a horizontal direction, and a front-back direction that intersect with each other in the pants-type state of FIG. 1, and has a waistline opening BH and a pair of leg openings LH. The upper side in the vertical direction corresponds to the waistline opening BH side, and the lower side corresponds to the crotch side. The front side in the front-rear direction corresponds to the wearer's ventral side, and the back side corresponds to the wearer's back side. Further, in the unfolded state as shown in FIG. 2, the diaper 1 has a longitudinal direction, a width direction, and a thickness direction that intersect with each other. In the following, one side in the longitudinal direction in this deployed state is also referred to as “abdominal side” or “front side”, and the other side in the longitudinal direction is also referred to as “back side” or “rear side”. The width direction in the unfolded state is the same as the left-right direction in the pants-type state. The longitudinal direction of the unfolded state is the direction along the vertical direction of the pants-type state. The thickness direction is the direction in which the materials that make up the diaper 1 are stacked, as shown in FIGS. 3A and 3B. The side in contact with the wearer in the thickness direction is the skin side, and the opposite side is the non-skin side.

The diaper 1 has an absorbent main body 10, a ventral waistline portion 20, and a back waistline portion 30. In the pants-type diaper 1, the absorbent main body 10 (the absorbent core 11 described later) is arranged along the vertical direction, and is bent back and forth at the lower end in the vertical direction. The abdominal waistline portion 20 is joined from the non-skin side to the upper end portion of the absorbent body 10 on the front side in the front-rear direction, and the upper body portion of the absorbent body 10 on the rear side in the front-rear direction is connected from the non-skin side to the back waistline portion. 30 are joined.

In the diaper 1 in the unfolded state of FIG. 2, the abdominal waistline portion 20 and the back waistline portion 30 are arranged such that their long sides extend along the left-right direction of the diaper 1. Then, the end portion on one side (front side) in the longitudinal direction of the absorbent main body 10 is arranged in the central portion of the abdominal waistline portion 20 in the left-right direction, and the absorbability is set in the central portion of the back waistline portion 30 in the left-right direction. The other end (rear side) of the main body 10 in the longitudinal direction is arranged. From the unfolded state of FIG. 2, the absorbent main body 10 is folded in two substantially at the center in the longitudinal direction, and both side portions of the abdominal waistline portion 20 in the left-right direction and both side portions of the back waistline portion 30 in the left-right direction are welded. The diaper 1 in a pants-type state is obtained by joining the diapers 1 with each other.

The absorbent main body 10 is provided with side elastic members 41 that expand and contract in the longitudinal direction (vertical direction of the diaper 1) on both sides in the left-right direction. Further, the absorbent main body 10 is provided with a pair of leakproof wall portions 40 along the longitudinal direction on both sides in the left-right direction. The leak-proof wall portion 40 can be erected on the skin side by the side elastic member 41.

In addition, the absorbent main body 10 includes an absorbent core 11 that absorbs excreted liquid, a liquid-permeable skin-side sheet 12 arranged closer to the wearer's skin than the absorbent core 11, and an absorbent core 11. A liquid impermeable non-skin side sheet 13 arranged on the non-skin side, and a sheet member 14. The skin-side sheet 12 has both left and right sides folded back to the non-skin side so that the absorbent core 11 is rolled up. The sheet member 14 is arranged on the non-skin side of the non-skin side sheet 13, and forms the leak preventive wall portion 40 on the skin side of the skin side sheet 12.

The absorbent core 11 is formed by molding a liquid absorbent fiber such as pulp fiber containing a super absorbent polymer (so-called SAP) into a predetermined shape. The absorbent core 11 of the present embodiment has a substantially hourglass shape in plan view, but is not limited to this, and may have, for example, a rectangular shape in plan view. The absorbent core 11 may be covered with a liquid-permeable core wrap sheet 15.

The abdominal waistline portion 20 and the back waistline portion 30 are inner layer sheets 21 and 31, outer layer sheets 22 and 32 arranged on the non-skin side of the inner layer sheets 21 and 31, and waistline

elastic members

23 and 33, respectively. Have. The waist

elastic members

23, 33 are arranged side by side in the up-down direction between the inner layer sheets 21, 31 and the outer layer sheets 22, 32, and are fixed in a stretched state in the left-right direction. Therefore, the abdominal waistline part 20 and the back waistline part 30 fit the wearer's waistline. In addition, a cover sheet that covers the upper end of the absorbent main body 10 from the skin side may be provided.

In the unfolded and expanded state of FIG. 2, the ventral waistline portion 20 has a rectangular shape in plan view. The back waistline portion 30 has an overlapping portion 30A that overlaps the abdominal waistline portion 20 in the front-rear direction, and an extension portion 30B that extends below the abdominal waistline portion 20. The overlapping portion 30A has a rectangular shape in plan view, and the extending portion 30B has an inverted trapezoidal shape in plan view. The extension 30B can cover the buttocks of the wearer. On the other hand, the abdominal waistline portion 20 has a shorter vertical length than the back waistline portion 30 and does not extend to the crotch side. Therefore, the movement of the leg that is pulled up to the abdominal side during walking or the like is not hindered, and walking is easy.

Further, the extending portion 30B of the back waistline portion 30 is provided with an extending portion elastic member 35 along the lower end thereof. Like the waist elastic member 33, the extension elastic member 35 is fixed in an extended state between the inner layer sheet 31 and the outer layer sheet 32. The extension portion elastic member 35 allows the extension portion 30B to fit the buttocks of the wearer, and prevents the extension portion 30B from being turned up.

<About the leak-proof wall part 40>
Each of the pair of leak-proof wall portions 40 is integrally formed with the absorbent main body 10 by folding the sheet member 14 constituting the exterior of the absorbent main body 10. However, the leak preventive wall portion 40 may be formed of a member different from the absorbent main body 10. In the leak-proof wall portion 40, the sheet member 14 is folded from the outer side to the inner side in the width direction at a folding line f1 shown in FIG. 3, and the sheet member 14 is folded back from the inner side to the outer side at the folding line f2. It is formed by In the following, of the leak-proof wall portion 40, the portion that is folded back from the inside in the width direction to the outside at the fold line f2 and is located on the skin side in the thickness direction is also referred to as "skin side portion 42", and the skin side A portion located on the non-skin side in the thickness direction with respect to the portion 42 is also referred to as a “non-skin side portion 43”. The outer end of the skin side portion 42 in the width direction is the tip 42 a of the leak preventive wall portion 40.

As shown in FIGS. 3A to 3C, the leakproof wall portion 40 of the present embodiment has a two-layer laminated structure in which the sheet members 14 are stacked in the thickness direction. Further, four side elastic members 41A (41) are provided side by side in the left-right direction between the two-layer sheet members 14 forming the skin side portion 42. The four side elastic members 41A are arranged near the outer ends (tips 42a) in the width direction. Further, two side elastic members 41B (41) are provided side by side in the left-right direction between the two-layer sheet members 14 forming the non-skin side portion 43. The two side elastic members 41B are arranged closer to the inner end in the width direction. However, the arrangement and number of the side

elastic members

41A and 41B are not limited to this.

The leakproof wall portion 40 is fixed to the skin side of the absorbent main body 10 in a non-erectable manner at the front end portion in the longitudinal direction by a pair of front end fixing portions 51 formed of an adhesive material such as a hot melt adhesive. There is. As shown in FIG. 3A, the front end fixing portion 51 includes a skin-side fixing portion 511 that fixes the skin-side portion 42 and the non-skin-side portion 43 of the leak-proof wall portion 40 and a non-skin-proof portion of the leak-proof wall portion 40. It has a non-skin side fixing part 512 for fixing the skin side part 43 and the skin side sheet 12 with an adhesive or the like.

Similarly, the leakproof wall portion 40 is erected on the skin side of the absorbent main body 10 at the rear end portion in the longitudinal direction by a pair of rear end fixing portions 52 formed of an adhesive material such as a hot melt adhesive. It is fixed to be impossible. Therefore, in the longitudinal direction, a portion of the sheet member 14 between the front end fixing portion 51 and the rear end fixing portion 52 is a portion where the leakage preventing wall portion 40 can stand.

In addition, a part of the non-skin side surface of the skin side portion 42 and a part of the skin side surface of the non-skin side portion 43, which face each other, of the pair of leak preventive wall portions 40 are joined to each other by the pair of first joining portions 61. There is. The first joint portion 61 is formed by applying an adhesive such as a hot melt adhesive along the longitudinal direction at the widthwise inner end of the leak preventive wall portion 40 (see FIGS. 2 and 3B). ). Since the opposing surfaces of the skin side portion 42 and the non-skin side portion 43 are joined by the first joint portion 61, the skin side portion 42 of the leak preventive wall portion 40 is a flat surface (curved surface) when the diaper 1 is worn. ) It is easy to maintain the shape and fit the wearer's body in terms of surface.

In addition, a part of the non-skin side portion of the non-skin side portion 43 of the pair of leak-proof wall portions 40 is joined to the skin side of the absorbent main body 10 (skin side sheet 12) by the pair of second joint portions 62. Has been done. As shown in FIG. 2, the second joint portion 62 has a hot-melt adhesive or the like in a region between the two first

joint portions

61, 61 arranged on the ventral side and the back side in the longitudinal direction. It is formed by applying the adhesive material (see FIGS. 2 and 3C). In the area where the second joint portion 62 is provided, the height at which the leakproof wall portion 40 can stand up to the skin side is higher than that in the area where the second joint portion 62 is not provided when the diaper 1 is worn. Limited. Therefore, in the region where the second joint portion 62 is provided, the distance between the wearer's body and the absorbent main body 10 becomes short, and it is easy to maintain the fit of the absorbent main body 10 to the wearer's body. You can

<About the absorbent pad 100>
Next, the absorbent pad 100 that can be used together with the diaper 1 will be described. The absorbent pad 100 has a function of absorbing excrement such as urine and can be detachably attached to the skin side of the absorbent main body 10 of the diaper 1.

FIG. 4 is a schematic plan view of the absorbent pad 100 and a schematic view showing a cross section thereof. The absorbent pad 100 is an absorbent article having a substantially rectangular shape in a plan view as shown in FIG. 4, and its long side direction is the longitudinal direction and its short side direction is the width direction. The longitudinal direction and the width direction of the absorbent pad 100 are common to the longitudinal direction and the width direction of the diaper 1 in FIG. The absorbent pad 100 has a thickness direction orthogonal to the longitudinal direction and the width direction. However, the shape of the absorbent pad 100 is not limited to the rectangular shape, and the length (width) in the width direction may vary at a predetermined position in the longitudinal direction.

The absorbent pad 100 has substantially the same configuration as the absorbent main body 10 of the diaper 1 except that it does not have a portion corresponding to the leak-proof wall portion 40. In FIG. 4, the absorbent pad 100 includes a liquid-absorbent absorbent body 111 that absorbs excreted liquid, a liquid-permeable skin-side sheet 112 disposed on the skin side in the thickness direction of the absorbent body 111, and an absorbent body. A liquid impermeable non-skin side sheet 113 arranged on the non-skin side in the thickness direction of 111 and a sheet member 114. The absorber 111, the skin-side sheet 112, the non-skin-side sheet 113, and the sheet member 114 are substantially the same as the absorbent core 11, the skin-side sheet 12, the non-skin-side sheet 13, and the sheet member 14 of the absorbent main body 10, respectively. Since the configuration is similar, the description is omitted here. Although not shown in FIG. 4, the absorbent pad 100 may be provided with a leakproof wall portion corresponding to the leakproof wall portion 40 of the diaper 1 by the sheet member 114 or other members.

Also, the non-skin side surface in the thickness direction of the absorbent pad 100 is provided with adhesive parts 115 at both ends in the longitudinal direction. The adhesive section 115 is an area coated with an adhesive such as a hot melt adhesive, and when the absorbent pad 100 is attached to the diaper 1 for use, the adhesive section 115 should be attached to the skin side of the diaper 1. Thus, the displacement of the absorbent pad 100 with respect to the diaper 1 is suppressed. When the absorbent pad 100 is not used, it is desirable that the adhesive portion 115 be covered with a protective sheet (not shown) from the non-skin side so that the adhesiveness of the adhesive portion 115 is not lost.

<How to attach the absorbent pad 100>
FIG. 5 is a schematic plan view showing a state in which the absorbent pad 100 is attached to the diaper 1 in the expanded and expanded state. FIG. 6A is a schematic cross-sectional view taken along the line DD of FIG. 6B is a schematic sectional view taken along line EE of FIG. In addition, in FIG. 5, the absorbent pad 100 is attached to the diaper 1 so that the center of the diaper 1 in the width direction and the center of the absorbent pad 100 in the width direction are aligned.

When attaching the absorbent pad 100 to the diaper 1, first, the absorbent pad 100 is placed on the skin side of the absorbent main body 10 of the diaper 1 so that the center positions in the width direction are aligned. Then, the adhesive portions 115 provided at both ends in the longitudinal direction are attached to the skin side of the diaper 1 (absorbent body 10) and fixed so that the position of the absorbent pad 100 does not shift in the longitudinal direction of the diaper 1.

Next, the end portions 100er on both sides in the width direction of the absorbent pad 100 are inserted into the space between the non-skin side portions 43 of the pair of leak preventive wall portions 40 and the skin side surface of the absorbent main body 10. That is, as shown in FIG. 6A, the end portion 100er in the width direction of the absorbent pad 100 is sandwiched between the first joint portion 61 and the absorbent main body 10 (skin side sheet 12) in the thickness direction. To In the present embodiment, in the region in which the pair of first joint portions 61 are arranged in the longitudinal direction, the spacing W61 between the inner ends 61ei in the width direction of the first joint portions 61 is the width direction of the absorbent pad 100. It has a portion shorter than the length (width) W100 (W61<W100). Therefore, at least a part of the end portion 100er in the width direction of the absorbent pad 100 can be sandwiched between the first joint portion 61 and the absorbent main body 10 in the thickness direction. As a result, the movement of the absorbent pad 100 in the thickness direction is restricted by the leak-proof wall portion 40 (first joint portion 61) of the diaper 1, and the absorbent pad 100 is separated from the diaper 1 toward the skin side in the thickness direction. It will be suppressed.

In addition, in this embodiment, since the skin side part 42 and the non-skin side part 43 of the leak-proof wall part 40 are mutually joined by the 1st junction part 61, the area|region in which the said 1st junction part 61 is provided. The strength of the leak preventive wall portion 40 is high. In addition, the end portion 100er in the width direction of the absorbent pad 100 is moved to the skin side in the thickness direction by the stretching force developed by the side elastic member 41 arranged at the position overlapping the first joint portion 61 in the thickness direction. It is easy to be pushed in. As a result, the movement of the absorbent pad 100 in the thickness direction can be firmly suppressed in the region where the first bonding portion 61 is provided.

Finally, the position of the absorbent pad 100 is fixed so as to be sandwiched from both sides in the width direction by the pair of second joint portions 62 of the leak preventive wall portion 40. That is, as shown in FIG. 6B, the outer end 100eo in the width direction of the absorbent pad 100 (that is, the edge in the width direction of the absorbent pad 100) contacts the inner end 62ei in the width direction of the pair of second bonding portions 62. Contact. In the present embodiment, in the longitudinal direction, the space W62 between the inner ends 62ei in the width direction of the pair of second bonding portions 62 is the width W of the absorbent pad 100 in the region in which the second bonding portions 62 are arranged. It has a portion that is the same as the length (width) W100 or shorter than W100 (W62≦W100). Therefore, at least a part of the outer end 100eo in the width direction of the absorbent pad 100 can be brought into contact with the inner end 62ei in the width direction of the second joint portion 62. Accordingly, the movement of the absorbent pad 100 in the width direction is restricted by the second joint portion 62, and it is possible to prevent the absorbent pad 100 from shifting in the width direction.

When the width W100 of the absorbent pad 100 is longer than the width W62 of the pair of second bonding portions 62 in the width direction, part of the end portion 100er in the width direction of the absorbent pad 100 is in the width direction as shown in FIG. 6B. It is compressed into a crushed state. That is, the absorbent pad 100 is compressed from both sides in the width direction by the pair of second joint portions 62. In this case, the movement of the absorbent pad 100 in the width direction is more easily restricted, and the positional displacement is more easily suppressed.

By mounting the absorbent pad 100 in this way, movement of the absorbent pad 100 in each of the longitudinal direction, the width direction, and the thickness direction of the diaper 1 is restricted. Therefore, even when the wearer moves the body, the absorbent pad 100 is less likely to be displaced, and the leakage of excrement and the deterioration of fit can be suppressed. As shown in FIG. 5, in a state where the absorbent pad 100 is attached to the diaper 1, a front end fixing portion 51 and a rear end fixing portion 52 are respectively provided on both outer sides in the longitudinal direction of the absorbent pad 100. It is provided. Therefore, even if the adhesive pad 115 is not provided on the absorbent pad 100, the absorbent pad 100 is restricted from moving in the longitudinal direction by the front end fixed portion 51 and the rear end fixed portion 52, and the absorbent pad 100 is long. It is possible to suppress displacement in the direction.

Further, as shown in FIG. 5, the center CL 62 of the second joint portion 62 is located on the front side (abdominal side) of the center CL of the diaper 1 in the longitudinal direction of the diaper 1 in the expanded state. That is, the second joint portion 62 is provided on the front side of the diaper 1. The region on the front side in the longitudinal direction is a region that is sandwiched between the legs of the wearer (groin region) when the diaper 1 is worn, and the force from the legs is applied each time the wearer moves the leg to the front side when walking. There is a region where displacement of the absorbent pad 100 attached to the diaper 1 is likely to occur due to the action of. On the other hand, in the diaper 1 of the present embodiment, the absorbent pad 100 is sandwiched from both sides in the width direction by the second joint portions 62 provided in the regions where the forces from both legs are likely to act, so that the absorbent pads 100 are absorbed in the regions. The pad 100 is restrained from shifting in the width direction (left-right direction).

Further, in the present embodiment, the entire second joint portion 62 is located on the front side (abdominal side) of the center CL of the diaper 1 in the longitudinal direction. In other words, the rear end 62eb in the longitudinal direction of the second joint portion is located on the front side of the center CL of the diaper 1. This makes it easier to suppress the widthwise shift of the absorbent pad 100 in the region on the front side in the longitudinal direction. Therefore, even when the wearer walks or moves his/her legs greatly while wearing the diaper 1, the displacement of the absorbent pad 100 attached to the diaper 1 can be effectively suppressed.

Further, the absorbent core 11 of the diaper 1 has a "constricted portion 11c" which is narrowed in the width direction in a region between the front end 11f and the rear end 11b in the longitudinal direction (see FIG. 5). ). That is, the widthwise length (width) of the narrowed portion 11c is larger than the maximum widthwise length (width) W11f (W11b) of the absorbent core 11 in the longitudinal direction front side end 11f (rear side end 11b). ) W11c is narrower. As described above, since the absorbent core 11 is formed of the liquid absorbent fiber, the absorbent core 11 has higher rigidity than other parts of the absorbent main body 10 (for example, the skin side sheet 12 and the like). Therefore, by narrowing the width W11c in the region near the center CL in the longitudinal direction (that is, the crotch of the wearer), it is difficult for the widthwise ends of the absorbent core 11 having high rigidity to hit the groin of the wearer. , Which makes the legs easy to move and makes it difficult for the wearer to feel discomfort.

The second joint portion 62 of the diaper 1 is arranged so as to overlap the constricted portion 11c in the longitudinal direction and to be located outside the absorbent core 11 in the width direction. A region that overlaps with the constricted portion 11c in the longitudinal direction and that is outside the absorbent core 11 in the width direction receives a compressive force in the width direction by being sandwiched between both legs of the wearer when the diaper 1 is worn. It is a region that is easily deformed. Therefore, when the absorbent pad 100 is also used, the absorbent pad 100 may be easily displaced in the area. On the other hand, in the present embodiment, since the second bonding portion 62 is provided in the region, the lateral movement of the absorbent pad 100 can be suppressed. In other words, by providing the constricted portion 11c on the absorbent core 11, it becomes difficult for the wearer's legs to move, and by adjusting the positional relationship between the constricted portion 11c and the second joint portion 62, the wearer can Even if the legs are moved, the displacement of the absorbent pad 100 can be suppressed.

Further, the first joint portion 61 is located inside the tip 42a of the leak preventive wall portion 40 (skin side portion 42) in the width direction. A region of the skin side portion 42 on the inner side in the width direction is a region that suppresses the widthwise end 100er of the absorbent pad 100 from the skin side when the absorbent pad 100 is attached to the diaper 1 (see FIG. 6A ). Therefore, in the vicinity of the inner end portion (that is, the region on the inner side in the width direction of the tip 42a), the skin side portion 42 and the non-skin side portion 43 are joined by the first joint portion 61 to increase the strength of the leak preventive wall portion 40. By increasing the height, the absorbent pad 100 can be stably suppressed. Accordingly, it is possible to easily prevent the absorbent pad 100 from coming off the diaper 1.

Further, when the absorbent pad 100 is attached to the diaper 1 as shown in FIG. 5, in the first joint portion 61, the

adhesive parts

115, 115 provided at both ends of the absorbent pad 100 contact the diaper 1 in the longitudinal direction. It is located inside the part. That is, in the longitudinal direction, the first joint portion 61 is located in a region between the pair of

adhesive portions

115, 115 provided at the front end portion and the rear end portion of the absorbent pad 100. When the absorbent pad 100 is attached to the diaper 1, the absorbent pad 100 is attached and fixed to the skin side of the diaper 1 in the portion of the absorbent pad 100 where the adhesive portion 115 is provided. On the other hand, in the region between the

adhesive portions

115, 115 in the longitudinal direction of the absorbent pad 100, the absorbent pad 100 is not attached to the diaper 1, and there is a risk of displacement. Therefore, in the present embodiment, by providing the first bonding portion 61 in the area between the

adhesive portions

115, 115, in the area, the end portion 100er in the width direction of the absorbent pad 100 as shown in FIG. The portion 40 is designed to be suppressed from the skin side. As a result, even in the region of the absorbent pad 100 where the adhesive portion 115 is not provided, it is possible to prevent the absorbent pad 100 from being displaced or separated. That is, it is possible to prevent the displacement from occurring easily over the entire absorbent pad 100.

Moreover, in the diaper 1, as shown in FIG. 6B, in the width direction, the distance W40 between the inner ends 40ei of the pair of leakproof wall portions 40 is the distance W62 between the inner ends 62ei of the pair of second joint portions 62. It is narrower than that (W40>W62). With such a configuration, when the absorbent pad 100 is attached, both end portions 100er, 100er in the width direction of the absorbent pad 100 are sandwiched by the pair of second

joint portions

62, 62 from the width direction, and the leakproof wall is formed. The inner end 40ei of the portion 40 facilitates covering from the skin side. Therefore, the displacement of the absorbent pad 100 can be more easily suppressed.

Moreover, in the longitudinal direction, the first joint portion 61 and the second joint portion 62 do not have overlapping portions. That is, the first joint portion 61 and the second joint portion 62 are provided at positions displaced from each other in the longitudinal direction. Since the skin-side portion 42 and the non-skin-side portion 43 are joined to each other in the portion where the first joint portion 61 is provided, the leakage preventing wall portion 40 of the present embodiment has a limited standing height. Then, since the skin non-skin side portion 43 is joined to the absorbent main body 10 (skin side sheet 12) at the portion where the second joint portion 62 is provided, the standing height is limited. Therefore, if the first joint portion 61 and the second joint portion 62 are formed at the same position in the longitudinal direction, the standing height of the leakproof wall portion 40 at that position is limited to double, and the diaper is diapered. When wearing the item 1, the fit may be deteriorated or the side leakage of excrement may easily occur. On the other hand, in the present embodiment, since the first joint portion 61 and the second joint portion 62 are not provided in the longitudinal direction in an overlapping manner, the standing height of the leak preventive wall portion 40 is greatly limited. Suppression is suppressed. Therefore, it is possible to easily suppress deterioration of fit and lateral leakage of excrement.

Further, in the width direction, a predetermined distance d is provided between the outer end 62eo of the second joint portion 62 and the outer end 40eo of the leak preventive wall portion 40. That is, in the width direction, the adhesive forming the second joint 62 is not provided on the outer end 40eo of the leak preventive wall 40, which is a so-called dry edge. The outer end 40eo of the leak-proof wall portion 40 is a portion that is likely to come into direct contact with the skin (legs) of the wearer when the diaper 1 is worn. Therefore, by setting the outer edge 40eo as a dry edge, the skin contact when worn becomes soft, and it is possible to make it difficult for the wearer to feel discomfort.

=== Other Embodiments ===
Although the embodiments of the present invention have been described above, the above embodiments are for the purpose of facilitating the understanding of the present invention, and are not for limiting and interpreting the present invention. Further, it is needless to say that the present invention can be modified or improved without departing from the gist thereof and that the present invention includes equivalents thereof.

In the above embodiment, the diaper that is a separate member in which the abdominal waistline portion 20 and the back waistline portion 30 are separated is illustrated, but a crotch portion is provided between the abdominal waistline portion 20 and the back waistline portion 30. The abdomen waistline portion 20 and the back waistline portion 30 may be one continuous member.

In the above-described embodiment, the various joints such as the first joint portion 61 and the second joint portion 62 provided on the leak-proof wall portion 40 were formed by the bonding means using the adhesive material. The forming method is not limited to this. For example, the joining may be performed by a pressure bonding means such as embossing.

1 diaper (pants type absorbent article),
10 absorbent body,
11 absorbent core, 11c waist, 11f front end, 11b rear end,
12 skin side sheet, 13 non-skin side sheet,
14 sheet members, 15 core wrap sheets,
20 ventral waist region, 21 inner layer sheet, 22 outer layer sheet,
23 waist elastic member,
30 back waistline part, 30A overlapping part, 30B extending part,
31 inner layer sheet, 32 outer layer sheet,
33 waist elastic member, 35 extension elastic member,
40 leak-proof wall part, 40 ei inner end, 40 eo outer end,
41 side elastic members (elastic members), 41A, 41B side elastic members (elastic members),
42 skin side, 42a tip,
43 non-skin side,
51 front end fixed part, 511 skin fixed part, 512 non-skin fixed part,
52 Rear end fixing part,
61 first joint, 61 ei inner end,
62 second joint portion, 62ei inner end, 62eo outer end, 62eb rear end,
100 absorbent pad,
100er end (width direction), 100eo outer end (width direction),
111 absorber, 112 skin side sheet, 113 non-skin side sheet,
114 sheet member, 115 adhesive portion,
W61 spacing (first joining portion), W62 spacing (second joining portion),
W100 length (width direction)

Claims

In a deployed state, having a longitudinal direction, a width direction, and a thickness direction that intersect with each other,
An absorbent body,
Provided on both sides in the width direction of the absorbent main body, a pair of leak-proof wall portions that can stand on the skin side in the thickness direction, and
A pants-type absorbent article capable of attaching an absorbent pad to the skin side in the thickness direction with respect to the absorbent main body,
Each of the pair of leakproof wall portions has a skin side portion and a non-skin side portion arranged on the non-skin side in the thickness direction with respect to the skin side portion,
A pair of first joining portions joining at least a part of the facing surfaces of the skin side portion and the non-skin side portion that face each other,
A pair of second joint portions that join at least a part of the non-skin side portion to the skin side of the absorbent main body,
In the state where the pants-type absorbent article and the absorbent pad are extended in the longitudinal direction and the width direction, the center in the width direction of the pants-type absorbent article and the center in the width direction of the absorbent pad are To be aligned, when the absorbent pad is attached to the pants-type absorbent article,
In the region in which the pair of first joint portions are arranged in the longitudinal direction, the widthwise distance between the inner ends of the pair of first joint portions is greater than the widthwise length of the absorbent pad. Also has a part that becomes shorter,
In the region in which the pair of second joint portions are arranged in the longitudinal direction, the widthwise distance between the inner ends of the pair of second joint portions is the length in the width direction of the absorbent pad. A pant-type absorbent article having the following parts.
The pants-type absorbent article according to claim 1,
In the longitudinal direction, the center of the second joint portion is located in front of the center of the pants-type absorbent article in the unfolded state, and the pants-type absorbent article is characterized in that.
The pants-type absorbent article according to claim 1 or 2, wherein
The pants-type absorbent article, wherein the entire second joint portion is located in front of the center of the pants-type absorbent article in the expanded state in the longitudinal direction.
The pants-type absorbent article according to any one of claims 1 to 3,
The absorbent body has an absorbent core,
The absorbent core, in the region between the front end and the rear end in the longitudinal direction, has a constricted portion having a reduced length in the width direction,
The pants-type absorbent article, wherein the second joint portion overlaps with the constricted portion in the longitudinal direction and is located outside the absorbent core in the width direction.
The pants-type absorbent article according to any one of claims 1 to 4,
The pants-type absorbent article, wherein the first joint portion is located inside the tip of the leak preventive wall in the width direction.
The pants-type absorbent article according to any one of claims 1 to 5,
The absorbent pad has a pair of adhesive parts on both sides in the longitudinal direction,
The first joint portion is located inside a position where the pair of adhesive portions contact the pants-type absorbent body in the longitudinal direction when the absorbent pad is attached to the pants-type absorbent article. A pant-type absorbent article characterized by:
The pants-type absorbent article according to any one of claims 1 to 6,
In the width direction, the interval between the inner ends of the pair of leakproof wall portions is narrower than the interval between the inner ends of the pair of second joint portions, and the pants-type absorbent article is characterized.
The pants-type absorbent article according to any one of claims 1 to 7,
The pants-type absorbent article, characterized in that, in the longitudinal direction, the first joint portion and the second joint portion have no overlapping portion.
The pants-type absorbent article according to any one of claims 1 to 8,
A pant-type absorbent article, wherein a predetermined distance is provided between an outer end of the second joint portion and an outer end of the leak-proof wall portion in the width direction.
In a deployed state, having a longitudinal direction, a width direction, and a thickness direction that intersect with each other,
An absorbent body,
Provided on both sides in the width direction of the absorbent main body, a pair of leak-proof wall portions that can stand on the skin side in the thickness direction, and
A pants-type absorbent article capable of attaching an absorbent pad to the skin side in the thickness direction with respect to the absorbent main body,
Each of the pair of leakproof wall portions has a skin side portion and a non-skin side portion arranged on the non-skin side in the thickness direction with respect to the skin side portion,
A pair of first joining portions joining at least a part of the facing surfaces of the skin side portion and the non-skin side portion that face each other,
A pair of second joint portions that join at least a part of the non-skin side portion to the skin side of the absorbent main body,
In the state where the pants-type absorbent article and the absorbent pad are extended in the longitudinal direction and the width direction, the center in the width direction of the pants-type absorbent article and the center in the width direction of the absorbent pad are To be aligned, when the absorbent pad is attached to the pants-type absorbent article,
At least a part of both ends of the absorbent pad in the width direction is sandwiched between the first bonding portion and the absorbent main body in the thickness direction,
Both ends of the absorbent pad in the width direction are in contact with the second joint portion in the width direction.
In the unfolded state, it has a longitudinal direction, a width direction, and a thickness direction that intersect with each other, is provided on the absorbent body and both sides of the absorbent body in the width direction, and can stand upright on the skin side in the thickness direction. A pair of leakproof walls, and a pants-type absorbent article including:
An absorbent pad attaching method, wherein an absorbent pad is attached to the skin side in the thickness direction with respect to the absorbent main body,
Each of the pair of leakproof wall portions has a skin side portion and a non-skin side portion arranged on the non-skin side in the thickness direction with respect to the skin side portion,
A pair of first joining portions joining at least a part of the facing surfaces of the skin side portion and the non-skin side portion that face each other,
A pair of second joint portions that join at least a part of the non-skin side portion to the skin side of the absorbent main body,
When attaching the absorbent pad to the pants-type absorbent article, so that the center in the width direction of the pants-type absorbent article and the center of the width direction of the absorbent pad are aligned,
At least a part of both ends of the absorbent pad in the width direction is sandwiched between the first bonding portion and the absorbent main body in the thickness direction,
An absorbent pad attachment method, characterized in that both edges of the absorbent pad in the width direction are brought into contact with the second joint portion in the width direction.