JP6757396B2 - Pants type absorbent article and how to attach absorbent pads - Google Patents

Description

The present invention relates to pants-type absorbent articles and a method of attaching absorbent pads.

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

Japanese Unexamined Patent Publication No. 2005-218876

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 has absorbed excrement is replaced to reduce the frequency of replacement of the pants-type disposable diaper. A method has been proposed. By using the pants-type diaper and the absorbent pad together in this way, it is possible to reduce the labor and financial burden on the user (wearer) to change the diaper. However, in the conventional method, when the wearer moves his / her body, the position of the absorbent pads is likely to shift, and there are problems that excrement leaks from the absorbent pads and the fit is deteriorated. It was.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to suppress displacement of the absorbent pads when the pants-type absorbent articles and the absorbent pads are used in combination. is there.

The main invention for achieving the above object has a longitudinal direction, a width direction and a thickness direction intersecting each other in a deployed state, and is provided on both sides of the absorbent body and the absorbent body in the width direction. It is a pants-type absorbent article provided with a pair of leak-proof wall portions that can stand up on the skin side in the thickness direction, and an absorbent pad can be attached to the skin side in the thickness direction from the absorbent body. 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 from the skin side portion, and the skin side portion and the skin side portion are described. A pair of first joints for joining at least a part of facing surfaces facing each other with the non-skin side portion, and a pair for joining at least a part of the non-skin side portion to the skin side of the absorbent body. With a second joint, the pants-type absorbent article and the absorbent pads extended in the longitudinal direction and the width direction, the center of the pants-type absorbent article in the width direction and the said. When the absorbent pads are attached to the pants-type absorbent articles so as to be aligned with the centers of the absorbent pads in the width direction, in the longitudinal direction, in the region where the pair of first joints are arranged. The pair of second joints have a portion in which the distance between the inner ends of the pair of first joints in the width direction is shorter than the length of the absorption pads in the width direction. It is characterized in that, in the region where is arranged, the distance between the inner ends of the pair of second joints in the width direction is equal to or less than the length of the absorption pad in the width direction. It is a pants type absorbent article.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

According to the present invention, when the pants-type absorbent article and the absorbent pad are used in combination, it is possible to prevent the absorbent pad from being displaced.

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

The description of this specification and the accompanying drawings will clarify at least the following matters.
In the unfolded state, it has a longitudinal direction, a width direction, and a thickness direction that intersect each other, and is provided on both sides of the absorbent body and the absorbent body in the width direction, and can stand on the skin side in the thickness direction. A pair of leak-proof wall portions, and a pants-type absorbent article to which an absorbent pad can be attached to the skin side in the thickness direction of the absorbent body, respectively. , A non-skin side portion arranged on the non-skin side in the thickness direction of the skin side portion, and facing each other of the skin side portion and the non-skin side portion. It has a pair of first joints for joining at least a part of each other and a pair of second joints for joining at least a part of the non-skin side portion to the skin side of the absorbent body. 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 the center of the absorbent pad in the width direction are aligned. As described above, when the absorbent pads are attached to the pants-type absorbent article, the inner ends of the pair of first joints are arranged in the region where the pair of first joints are arranged in the longitudinal direction. The pair has a portion in which the distance between the absorption pads in the width direction is shorter than the length of the absorption pads in the width direction, and the pair is arranged in a region in which the pair of second joints are arranged in the longitudinal direction. The pants-type absorbent article is characterized in that the distance between the inner ends of the second joint portion in the width direction is equal to or less than the length of the absorption pad in the width direction.

According to such a pants-type absorbent article, when the absorbent pad is attached, at least a part of the widthwise ends of the absorbent pad is absorbed with a pair of first joints (leakage-proof wall portions). It can be inserted between the main body and the first joint, and the movement of the absorbent pads in the thickness direction is restricted. Further, the outer edges of the absorbent pads in the width direction are sandwiched from both sides in the width direction by the pair of second joints, and the movement of the absorption pads in the width direction is restricted. As a result, it is possible to prevent the absorption pads from being displaced.

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

According to such a pants-type absorbent article, the absorbent pads are 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 when worn. Therefore, the displacement of the absorbent pads in the width direction is suppressed in the region, and the displacement of the absorbent pads is less likely to occur even when the wearer moves the body (both legs).

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

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

In such a pants-type absorbent article, the absorbent 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 thereof. The second junction overlaps the constriction 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 leg is less likely to be hindered by providing the constricted portion in the absorbent core. Further, by adjusting the positional relationship between the constricted portion and the second joint portion, even when the wearer moves the leg significantly in the area where the constricted portion is provided, the position of the absorbing pad is determined by the second joint portion. The deviation can be effectively suppressed.

In such a pants-type absorbent article, it is desirable that the first joint is located inside the tip of the leak-proof 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 inside in the width direction from the tip of the leak-proof wall portion. As a result, when the absorbent pads are attached, the end portion in the width direction of the absorbent pads can be stably suppressed by the leak-proof wall portion. Therefore, it becomes easy to prevent the absorption pads from coming off.

In such a 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 that time, it is desirable that the pair of adhesive portions are located inside the position where the pair of adhesive portions abut on the pants-type absorption in the longitudinal direction.

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

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

According to such a pants-type absorbent article, when the absorbent pads are attached, both ends of the absorbent pads in the width direction are sandwiched from the width direction by a pair of second joints, and the leakage-proof wall portion. The inner edge makes it easier to cover from the skin side. Therefore, it is possible to make it easier to suppress the displacement of the absorbing pads.

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 in which the standing height of the leak-proof wall portion is restricted by the first joint portion and a portion in which the standing height of the leak-proof wall portion is restricted by the second joint portion. It is possible to prevent the standing height of the leak-proof wall portion from being greatly restricted due to the deviation of and in the longitudinal direction. Therefore, while suppressing the misalignment of the absorbent pads, it is possible to prevent deterioration of the fit of the pants-type absorbent article and lateral leakage of excrement.

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

According to such a pants-type absorbent article, a so-called dry edge is formed at the outer end of the leak-proof 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 portion, which is likely to come into direct contact with the wearer's skin (legs), becomes soft and does not cause discomfort to the wearer. can do.

Further, in the deployed state, it has a longitudinal direction, a width direction, and a thickness direction that intersect with each other, and is provided on both sides of the absorbent body and the absorbent body in the width direction, and is provided on both sides of the absorbent body in the width direction on the skin side in the thickness direction. A pants-type absorbent article comprising a pair of erectable leak-proof wall portions and to which an absorbent pad can be attached to the skin side in the thickness direction of the absorbent body, wherein the pair of leak-proof wall portions are provided. Each has a skin side portion and a non-skin side portion arranged on the non-skin side in the thickness direction of the skin side portion, and the skin side portion and the non-skin side portion face each other. It has a pair of first joints for joining at least a part of the facing surfaces, and a pair of second joints for joining at least a part of the non-skin side to the skin side of the absorbent body. 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 the center of the absorbent pad in the width direction. When the absorbent pads are attached to the pants-type absorbent articles so that they are aligned, at least a part of both ends of the absorbent pads in the width direction is the first joint and the absorption in the thickness direction. A pants-type absorbent article characterized in that both end edges of the absorbent pads in the width direction are in contact with the second joint in the width direction, which is sandwiched between the sex body and the body, is revealed.

According to such a pants-type absorbent article, when the absorbent pad is attached, at least a part of the widthwise ends of the absorbent pad is absorbed with a pair of first joints (leakage-proof wall portions). It can be inserted between the main body and the first joint, and the movement of the absorbent pads in the thickness direction is restricted. Further, the outer edges of the absorbent pads in the width direction are sandwiched from both sides in the width direction by the pair of second joints, and the movement of the absorption pads in the width direction is restricted. As a result, it is possible to prevent the absorption pads from being displaced.

Further, in the deployed state, it has a longitudinal direction, a width direction, and a thickness direction that intersect with each other, and is provided on both sides of the absorbent body and the absorbent body in the width direction, and is provided on both sides of the absorbent body in the width direction on the skin side in the thickness direction. An absorbent pad attachment method in which an absorbent pad is attached to the skin side in the thickness direction of the absorbent body with respect to a pants-type absorbent article provided with a pair of erectable leak-proof wall portions. 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 portion are provided. A pair of first joints that join at least a part of the facing surfaces facing each other with the side parts, and a pair of second joints that join at least a part of the non-skin side part to the skin side of the absorbent body. When attaching the absorbent pad to the pants-type absorbent article so as to have a joint portion and align the center of the pants-type absorbent article in the width direction with the center of the absorbent pad in the width direction. In addition, at least a part of both ends of the absorbent pads in the width direction is sandwiched between the first joint and the absorbent body in the thickness direction, and both ends of the absorbent pads in the width direction are sandwiched. , The method of attaching the absorbent pads, which is characterized in that the second joint is brought into contact with the second joint in the width direction, becomes clear.

According to such an absorption pad attaching method, when attaching the absorption pad, at least a part of the widthwise ends of the absorption pad is formed between the pair of first joints (leakage-proof wall portion) and the absorbent body. It is possible to insert between the pads, and the first joint restricts the movement of the absorbent pads in the thickness direction. Further, the outer edges of the absorbent pads in the width direction are sandwiched from both sides in the width direction by the pair of second joints, and the movement of the absorption pads in the width direction is restricted. As a result, it is possible to prevent the absorption pads from being displaced.

=== Embodiment ===
Hereinafter, embodiments will be described with reference to 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 pants-type disposable diapers 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 unfolded and stretched diaper 1. FIG. 3A is a schematic cross-sectional view taken along the line AA of FIG. FIG. 3B is a schematic cross-sectional view taken along the line BB of FIG. FIG. 3C is a schematic cross-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, it is in a state of being extended until the dimensions of the members constituting the diaper 1 (for example, the sheet member 14 described later) are equal to or close to the dimensions of the member alone.

In the pants-shaped state of FIG. 1, the diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction that intersect with each other, and a waist circumference opening BH and a pair of leg circumference openings LH are formed. The upper side in the vertical direction corresponds to the waist circumference opening BH side, and the lower side corresponds to the inseam side. The front side in the anterior-posterior direction corresponds to the ventral side of the wearer, and the rear side corresponds to the back side of the wearer. 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 each other. Hereinafter, one side in the longitudinal direction in this deployed state is also referred to as "ventral side" or "anterior side", and the other side in the longitudinal direction is also referred to as "dorsal side" or "posterior side". The width direction in the unfolded state is the same as the left-right direction in the pants type state. The longitudinal direction in the unfolded state is the direction along the vertical direction in the pants-shaped state. Further, the thickness direction is the direction in which the materials constituting the diaper 1 are laminated, 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 waist circumference 20, and a dorsal waist circumference 30. In the pants-shaped diaper 1, the absorbent body 10 (absorbent core 11 described later) is arranged along the vertical direction and is bent back and forth at the lower end portion in the vertical direction. The ventral waistline 20 is joined from the non-skin side to the upper end of the absorbent body 10 on the front side in the anterior-posterior direction, and the dorsal waistline part from the non-skin side to the upper end of the absorbent body 10 on the rear side in the front-back direction. 30 are joined.

In the unfolded diaper 1 of FIG. 2, the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are arranged so that their long side directions are along the left-right direction of the diaper 1. Then, one end (front side) of the absorbent body 10 in the longitudinal direction is arranged at the center of the ventral waist circumference 20 in the left-right direction, and the absorbent body 10 is absorbent at the center of the dorsal waist circumference 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 body 10 is folded in half at substantially the center in the longitudinal direction, and both side portions of the ventral waist circumference portion 20 in the left-right direction and both side portions of the dorsal waist circumference portion 30 in the left-right direction are welded. By joining with a diaper or the like, the diaper 1 is in a pants-type state.

The absorbent main body 10 includes 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 leak-proof wall portions 40 along the longitudinal direction thereof on both side portions in the left-right direction. The leak-proof wall portion 40 can stand up on the skin side by the side elastic member 41.

Further, the absorbent body 10 is more than the absorbent core 11 that absorbs the excrement liquid, the liquid-permeable skin-side sheet 12 that is arranged closer to the wearer's skin than the absorbent core 11, and the absorbent core 11. It has 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 as to involve the absorbent core 11. The sheet member 14 is arranged on the non-skin side of the non-skin side sheet 13 and forms a leak-proof 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 a pulp fiber containing a highly absorbent polymer (so-called SAP) into a predetermined shape. The absorbent core 11 of the present embodiment has a substantially hourglass shape in a plan view, but is not limited to this, and may be, for example, a rectangular shape in a plan view. Further, the absorbent core 11 may be covered with a liquid-permeable core wrap sheet 15.

The ventral waist circumference 20 and the dorsal waist circumference 30 are the inner layer sheets 21 and 31, the outer layer sheets 22 and 32 arranged on the non-skin side of the inner layer sheets 21 and 31, and the waist elastic members 23 and 33, respectively. Has. The waistline elastic members 23 and 33 are arranged side by side in the vertical direction between the inner layer sheets 21 and 31 and the outer layer sheets 22 and 32, and are fixed in an extended state in the horizontal direction. Therefore, the ventral waist circumference 20 and the dorsal waist circumference 30 fit the wearer's waist circumference. Further, a cover sheet may be provided to cover the upper end portion of the absorbent body 10 from the skin side.

In the expanded and extended state of FIG. 2, the ventral waist circumference 20 has a rectangular shape in a plan view. The dorsal waist circumference portion 30 has an overlapping portion 30A that overlaps with the ventral waist circumference portion 20 in the front-rear direction, and an extension portion 30B that extends below the ventral waist circumference portion 20. The overlapping portion 30A has a rectangular shape in a plan view, and the extending portion 30B has an inverted trapezoidal shape in a plan view. The extension 30B can cover the wearer's buttocks. On the other hand, the ventral waist circumference 20 is shorter in the vertical direction than the dorsal waist circumference 30, and does not extend to the inseam side. Therefore, the movement of the leg pulled up to the ventral side during walking is not hindered, and it is easy to walk.

Further, the extension portion 30B of the dorsal waist circumference portion 30 is provided with an extension portion elastic member 35 along the lower end thereof. The extension portion elastic member 35 is fixed in an extended state between the inner layer sheet 31 and the outer layer sheet 32, similarly to the waist circumference elastic member 33. The extension portion elastic member 35 allows the extension portion 30B to fit the wearer's buttocks and suppress the extension portion 30B from turning over.

<About leak-proof wall 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-proof wall portion 40 may be formed of a member different from that of the absorbent main body 10. In the leak-proof wall portion 40, the sheet member 14 is bent from the outside to the inside in the width direction at the bending line f1 shown in FIG. 3, and the sheet member 14 is folded back from the inside to the outside in the width direction at the bending line f2. It is formed by In the following, the portion of the leak-proof wall portion 40 that is folded back from the inside to the outside in the width direction at the bending line f2 and is located on the skin side in the thickness direction is also referred to as a “skin side portion 42” and is on the skin side. A portion located on the non-skin side in the thickness direction of the portion 42 is also referred to as a “non-skin side portion 43”. Further, the outer end of the skin side portion 42 in the width direction is defined as the tip 42a of the leak-proof wall portion 40.

As shown in FIGS. 3A to 3C, the leak-proof 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. Then, four side elastic members 41A (41) are provided side by side in the left-right direction between the two-layer seat members 14 constituting the skin side portion 42. The four side elastic members 41A are arranged closer to the outer end (tip 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 seat members 14 constituting 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 quantity of the side elastic members 41A and 41B are not limited to this.

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

Similarly, the leak-proof wall portion 40 stands on the skin side of the absorbent body 10 at the posterior end portion in the longitudinal direction by a pair of posterior end portion fixing portions 52 formed of an adhesive such as a hot melt adhesive. It is fixed impossible. Therefore, in the longitudinal direction, the portion of the seat member 14 between the front end portion fixing portion 51 and the rear end portion fixing portion 52 becomes an upright portion of the leak-proof wall portion 40.

Further, of the pair of leak-proof wall portions 40, a part of the non-skin side surface of the skin side portion 42 facing each other and a part of the skin side surface of the non-skin side portion 43 are joined to each other by the pair of first joint 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 inner end portion of the leak-proof wall portion 40 in the width direction (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-proof wall portion 40 is flat (curved surface) when the diaper 1 is worn. ) It is easy to maintain the shape and it is easy to fit the wearer's body in terms of surface.

Further, a part of the non-skin side surface 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 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 62 is formed in a region between the two first joints 61, 61, which are arranged on the ventral side and the dorsal side in the longitudinal direction, respectively, with a hot melt adhesive or the like. It is formed by applying the adhesive of (see FIGS. 2 and 3C). In the area where the second joint 62 is provided, when the diaper 1 is worn, the height at which the leak-proof wall 40 can stand up on the skin side is higher than in the area where the second joint 62 is not provided. Be restricted. Therefore, in the region where the second joint portion 62 is provided, the distance between the wearer's body and the absorbent body 10 becomes close, and it is easy to maintain the fit of the absorbent body 10 to the wearer's body. Can be done.

<About Absorbent Pad 100>
Subsequently, the absorbent pads 100 that can be used in combination 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 body 10 of the diaper 1.

FIG. 4 is a schematic plan view of the absorbent pads 100 and a schematic view showing a cross section thereof. As shown in FIG. 4, the absorbent pad 100 is an absorbent article having a substantially rectangular shape in a plan view, and the long side direction thereof is the longitudinal direction and the short side direction is the width direction. The longitudinal direction and the width direction of the absorbent pads 100 are the same directions as the longitudinal direction and the width direction of the diaper 1 in FIG. Further, the absorbent pads 100 have thickness directions orthogonal to each other in the longitudinal direction and the width direction. However, the shape of the absorbent pads 100 is not limited to a rectangle, 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 absorption pads 100 include a liquid-absorbing absorber 111 that absorbs excrement liquid, a liquid-permeable skin-side sheet 112 that is arranged on the skin side in the thickness direction of the absorber 111, and an absorber. It has 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 abbreviated as the absorbent core 11, the skin side sheet 12, the non-skin side sheet 13, and the sheet member 14, respectively, of the absorbent body 10. Since the configuration is the same, the description thereof is omitted here. Although not shown in FIG. 4, the absorbent pad 100 may be provided with a leak-proof wall portion corresponding to the leak-proof wall portion 40 of the diaper 1 by the sheet member 114 or other members.

Further, on the non-skin side surface of the absorbent pad 100 in the thickness direction, adhesive portions 115 are provided at both ends in the longitudinal direction. The adhesive portion 115 is an area to which an adhesive such as a hot melt adhesive is applied, and when the absorbent pad 100 is attached to the diaper 1 and used, the adhesive portion 115 should be attached to the skin side surface of the diaper 1. As a result, the displacement of the absorbent pads 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 is covered from the non-skin side by a protective sheet (not shown) so that the adhesive portion 115 does not lose its adhesiveness.

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

When attaching the absorbent pads 100 to the diaper 1, first, the absorbent pads 100 are placed on the skin side of the absorbent 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 the absorbent pads 100 are fixed so as not to shift in the longitudinal direction of the diaper 1.

Subsequently, the end portions 100er on both sides of the absorbent pad 100 in the width direction are inserted into the space between the non-skin side portion 43 of the pair of leak-proof wall portions 40 and the skin side surface of the absorbent body 10. That is, as shown in FIG. 6A, the end portion 100er of the absorbent pad 100 in the width direction is sandwiched between the first joint portion 61 and the absorbent body 10 (skin side sheet 12) in the thickness direction. To. In the present embodiment, in the region where the pair of first joints 61 are arranged in the longitudinal direction, the distance W61 between the inner ends 61ei in the width direction of the first joint 61 is in the width direction of the absorption pads 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 absorption pad 100 can be in a state of being sandwiched between the first joint portion 61 and the absorbent body 10 in the thickness direction. As a result, the movement of the absorbent pads 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 pads 100 are separated from the diaper 1 toward the skin side in the thickness direction. It is suppressed.

In the present embodiment, since the skin side portion 42 and the non-skin side portion 43 of the leak-proof wall portion 40 are joined to each other by the first joint portion 61, the region where the first joint portion 61 is provided. The strength of the leak-proof wall portion 40 is high. Further, due to the elastic force generated by the side elastic member 41 arranged at a position overlapping the first joint portion 61 in the thickness direction, the end portion 100er in the width direction of the absorption pad 100 is moved to the skin side in the thickness direction. It is easy to be pushed in. As a result, the movement of the absorbent pads 100 in the thickness direction can be firmly suppressed in the region where the first joint portion 61 is provided.

Finally, the position of the absorbent pads 100 is fixed so as to be sandwiched from both sides in the width direction by the pair of second joints 62 of the leak-proof wall portion 40. That is, as shown in FIG. 6B, the outer end 100eo in the width direction of the absorption pads 100 (that is, the edge in the width direction of the absorption pads 100) corresponds to the inner end 62ei in the width direction of the pair of second joints 62. Get in touch. In the present embodiment, in the longitudinal direction, in the region where the second joint 62 is arranged, the distance W62 between the inner ends 62ei in the width direction of the pair of second joints 62 is in the width direction of the absorption pad 100. 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 absorption pad 100 can be brought into contact with the inner end 62ei in the width direction of the second joint portion 62. As a result, the movement of the absorption pads 100 in the width direction is restricted by the second joint portion 62, and it is possible to prevent the absorption pads 100 from being displaced in the width direction.

When the width W100 of the absorption pads 100 is longer than the distance W62 in the width direction of the pair of second joints 62, a part of the end 100er in the width direction of the absorption pads 100 is in the width direction as shown in FIG. 6B. It is compressed into a crushed state. That is, the absorption pads 100 are compressed from both sides in the width direction by the pair of second joints 62. In this case, the movement of the absorbent pads 100 in the width direction is more likely to be restricted, and the misalignment is more likely to be suppressed.

By attaching the absorbent pads 100 in this way, the movement of the absorbent pads 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 his / her body, the absorption pad 100 is less likely to be displaced, and leakage of excrement and deterioration of fit can be suppressed. As shown in FIG. 5, when the absorbing pads 100 are attached to the diaper 1, front end fixing portions 51 and rear end fixing portions 52 are provided on both outer sides of the absorbing pads 100 in the longitudinal direction, respectively. It is provided. Therefore, even if the absorption pad 100 is not provided with the adhesive portion 115, the absorption pad 100 is restricted from moving in the longitudinal direction by the front end portion fixing portion 51 and the rear end portion fixing portion 52, and is longitudinally long. It is possible to suppress the displacement in the direction.

Further, as shown in FIG. 5, in the longitudinal direction of the diaper 1 in the deployed state, the center CL62 of the second joint portion 62 is located on the front side (ventral side) of the center CL of the diaper 1. That is, the second joint portion 62 is provided near the front side of the diaper 1. The anterior region in the longitudinal direction is an region sandwiched between the wearer's legs (inguinal region) when the diaper 1 is worn, and the force from both legs each time the wearer moves the legs forward during walking or the like. There is a region where the absorption pad 100 attached to the diaper 1 is likely to be misaligned due to the action of. On the other hand, in the diaper 1 of the present embodiment, the absorbing pads 100 are sandwiched from both sides in the width direction by the second joints 62 provided in the regions where the forces from both legs are likely to act, so that the absorbing pads 100 are absorbed in the regions. It is suppressed that the pad 100 is displaced in the width direction (left-right direction).

Further, in the present embodiment, in the longitudinal direction, the entire second joint portion 62 is located on the anterior side (ventral side) of the central CL of the diaper 1. In other words, the posterior end 62eb in the longitudinal direction of the second joint is located anterior to the central CL of the diaper 1. As a result, it becomes easier to suppress the deviation of the absorption pad 100 in the width direction in the region on the front side in the longitudinal direction. Therefore, even when the wearer walks or moves his / her legs while wearing the diaper 1, the displacement of the absorbent pads 100 attached to the diaper 1 can be effectively suppressed.

Further, the absorbent core 11 of the diaper 1 has a "neck portion 11c" constricted in the width direction in the region between the front end portion 11f and the rear end portion 11b in the longitudinal direction (see FIG. 5). ). That is, the length (width) in the width direction at the constricted portion 11c is larger than the maximum value of the length (width) W11f (W11b) in the width direction at the front end portion 11f (rear side end portion 11b) in the longitudinal direction of the absorbent core 11. ) W11c is narrower. As described above, since the absorbent core 11 is formed of the liquid absorbent fiber, the rigidity is higher than that of other parts of the absorbent 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 lower part of the wearer's crotch), both ends in the width direction of the highly rigid absorbent core 11 are less likely to hit the wearer's inguinal region. It makes the legs easier to move and makes it less likely to cause discomfort to the wearer.

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. The region that overlaps the constricted portion 11c in the longitudinal direction and is outside the absorbent core 11 in the width direction receives a compressive force in the width direction by being sandwiched between the wearer's legs when wearing the diaper 1. It is an area that is easily deformed. Therefore, when the absorbent pads 100 are used in combination, the position of the absorbent pads 100 may be easily displaced in the region. On the other hand, in the present embodiment, since the second joint portion 62 is provided in the region, the movement of the absorption pad 100 in the left-right direction can be suppressed. That is, by providing the constricted portion 11c in the absorbent core 11, the movement of the wearer's legs is less likely to be hindered, and by adjusting the positional relationship between the constricted portion 11c and the second joint portion 62, the wearer can use it. Even when the legs are moved, the displacement of the absorbent pads 100 can be suppressed.

Further, the first joint portion 61 is located inside the tip 42a of the leak-proof wall portion 40 (skin side portion 42) in the width direction. The region of the inner end portion in the width direction of the skin side portion 42 is a region for suppressing the end portion 100er in the width direction of the absorption 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 inside in the width direction from 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 leakage-proof wall portion 40. By increasing the pressure, the absorption pad 100 can be stably suppressed. This makes it easier to prevent the absorbent pads 100 from coming off the diaper 1.

Further, when the absorbent pads 100 are attached to the diaper 1 as shown in FIG. 5, the adhesive portions 115 and 115 provided at both ends of the absorbent pads 100 come into contact with the diaper 1 in the longitudinal direction of the first joint portion 61. It is located inside the part. That is, in the longitudinal direction, the first joint portion 61 is located in the region between the pair of adhesive portions 115 and 115 provided at the front end portion and the rear end portion of the absorption pad 100. When the absorbent pads 100 are attached to the diaper 1, the absorbent pads 100 are attached to and fixed to the skin side of the diaper 1 at the portion of the absorbent pads 100 where the adhesive portion 115 is provided. On the other hand, in the region between the adhesive portions 115 and 115 in the longitudinal direction of the absorbent pads 100, the absorbent pads 100 are not attached to the diaper 1, and there is a possibility that the position shift may occur. Therefore, in the present embodiment, by providing the first joint portion 61 in the region between the adhesive portions 115 and 115, the end portion 100er in the width direction of the absorption pad 100 is a leak-proof wall in the region as shown in FIG. 6A. It is made to be suppressed from the skin side by the part 40. As a result, even in the region of the absorption pads 100 where the adhesive portion 115 is not provided, it is possible to suppress the displacement and detachment of the absorption pads 100. That is, it is possible to prevent misalignment from occurring over the entire absorption pad 100.

Further, 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 leak-proof wall portions 40 is the distance W62 between the inner ends 62ei of the pair of second joint portions 62. It is narrower than (W40> W62). With such a configuration, when the absorption pad 100 is attached, both ends 100er and 100er in the width direction of the absorption pad 100 are sandwiched by a pair of second joints 62 and 62 from the width direction to prevent leakage. The inner edge 40ei of the portion 40 makes it easier to cover from the skin side. Therefore, it is possible to make it easier to suppress the displacement of the absorption pads 100.

Further, 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. In the leak-proof wall portion 40 of the present embodiment, the standing height is limited because the skin side portion 42 and the non-skin side portion 43 are joined at the portion where the first joint portion 61 is provided. Then, in the portion where the second joint portion 62 is provided, the non-skin side portion 43 is joined to the absorbent main body 10 (skin side sheet 12), so that 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 leak-proof wall portion 40 at that position is doubly limited, and the diaper When the item 1 is worn, the fit may be deteriorated or the excrement may easily leak sideways. On the other hand, in the present embodiment, since the first joint portion 61 and the second joint portion 62 are not provided so as to overlap each other in the longitudinal direction, the standing height of the leak-proof wall portion 40 is greatly limited. It is suppressed that it is stored. 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-proof wall portion 40. That is, in the width direction, the adhesive for forming the second joint portion 62 is not provided on the outer end 40eo of the leak-proof wall portion 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 wearer's skin (legs) when the diaper 1 is worn. Therefore, by setting the outer end 40eo as a dry edge, it is possible to soften the skin contact during wearing and to make it less likely to cause discomfort to the wearer.

=== Other embodiments ===
Although the embodiments of the present invention have been described above, the above-described embodiments are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Further, it goes without saying that the present invention can be changed or improved without departing from the gist thereof, and the present invention includes an equivalent thereof.

In the above embodiment, a diaper in which the ventral waist circumference 20 and the dorsal waist circumference 30 are separated and is a separate member is illustrated, but a crotch portion is provided between the ventral waist circumference 20 and the dorsal waist circumference 30. , The ventral waist circumference 20 and the dorsal waist circumference 30 may be a continuous member.

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

1 Diaper (pants type absorbent article),
10 Absorbent body,
11 Absorbent core, 11c constriction, 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 circumference, 21 inner layer sheet, 22 outer layer sheet,
23 Girth elastic member,
30 Dorsal girth, 30A overlap, 30B extension,
31 inner layer sheet, 32 outer layer sheet,
33 Girth elastic member, 35 Extension elastic member,
40 leak-proof wall, 40 ei inner edge, 40 eo outer edge,
41 Side elastic member (elastic member), 41A, 41B Side elastic member (elastic member),
42 skin side, 42a tip,
43 Non-skin side,
51 Front end fixing part, 511 Skin side fixing part, 512 Non-skin side fixing part,
52 Rear end fixing part,
61 1st joint, 61ei inner edge,
62 2nd joint, 62ei inner end, 62eo outer end, 62eb posterior end,
100 absorbent pads,
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 part,
W61 interval (first joint), W62 interval (second joint),
W100 length (width direction)

Claims (11)

In the unfolded state, it has a longitudinal direction, a width direction, and a thickness direction that intersect each other.
Absorbent body and
A pair of leak-proof wall portions provided on both sides of the absorbent body in the width direction and capable of standing on the skin side in the thickness direction are provided.
A pants-type absorbent article to which an absorbent pad can be attached to the skin side in the thickness direction of the absorbent body.
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.
A pair of first joints that join at least a part of the facing surfaces of the skin side and the non-skin side that face each other,
It has a pair of second joints that join at least a part of the non-skin side to the skin side of the absorbent body.
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 the center of the absorbent pad in the width direction are When the absorbent pads are attached to the pants-type absorbent article so as to be aligned,
In the longitudinal direction, in the region where the pair of first joints are arranged, the distance between the inner ends of the pair of first joints in the width direction is greater than the length of the absorption pads in the width direction. Also has a shortened part,
In the longitudinal direction, in the region where the pair of second joints are arranged, the distance between the inner ends of the pair of second joints in the width direction is the length of the absorption pad in the width direction. A pants-type absorbent article having the following parts. The pants-type absorbent article according to claim 1.
A pants-type absorbent article characterized in that, in the longitudinal direction, the center of the second joint is located on the front side of the center of the pants-type absorbent article in the deployed state. The pants-type absorbent article according to claim 1 or 2.
A pants-type absorbent article characterized in that, in the longitudinal direction, the entire second joint is located in front of the center of the pants-type absorbent article in the deployed state. The pants-type absorbent article according to any one of claims 1 to 3.
The absorbent body has an absorbent core and
The absorbent core has a constriction that is shorter in the width direction in the region between the anterior and posterior ends in the longitudinal direction.
A pants-type absorbent article characterized in that 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.
A pants-type absorbent article characterized in that the first joint is located inside the tip of the leak-proof 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 portions on both sides in the longitudinal direction.
The first joint is located inside the position where the pair of adhesive portions abut on the pants-type absorption in the longitudinal direction when the absorption pads are attached to the pants-type absorbent article. Pants-type absorbent article characterized by. The pants-type absorbent article according to any one of claims 1 to 6.
A pants-type absorbent article characterized in that, in the width direction, the distance between the inner ends of the pair of leak-proof wall portions is narrower than the distance between the inner ends of the pair of second joints. The pants-type absorbent article according to any one of claims 1 to 7.
A pants-type absorbent article characterized in that the first joint portion and the second joint portion do not have an overlapping portion in the longitudinal direction. The pants-type absorbent article according to any one of claims 1 to 8.
A pants-type absorbent article characterized in that, 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. In the unfolded state, it has a longitudinal direction, a width direction, and a thickness direction that intersect each other.
Absorbent body and
A pair of leak-proof wall portions provided on both sides of the absorbent body in the width direction and capable of standing on the skin side in the thickness direction are provided.
A pants-type absorbent article to which an absorbent pad can be attached to the skin side in the thickness direction of the absorbent body.
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.
A pair of first joints that join at least a part of the facing surfaces of the skin side portion and the non-skin side portion that face each other,
It has a pair of second joints that join at least a part of the non-skin side to the skin side of the absorbent body.
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 the center of the absorbent pad in the width direction are When the absorbent pads are attached to the pants-type absorbent article so as to be aligned,
At least a part of both ends of the absorbent pad in the width direction is sandwiched between the first joint and the absorbent body in the thickness direction.
A pants-type absorbent article characterized in that both end edges of the absorbent pads in the width direction come into contact with the second joint 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, and is provided on both sides of the absorbent body and the absorbent body in the width direction, and can stand on the skin side in the thickness direction. For pants-type absorbent articles with a pair of leak-proof walls
It is an absorption pad attachment method in which the absorption pad is attached to the skin side in the thickness direction of the absorbent body.
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.
A pair of first joints that join at least a part of the facing surfaces of the skin side portion and the non-skin side portion that face each other,
It has a pair of second joints that join at least a part of the non-skin side to the skin side of the absorbent body.
When attaching the absorbent pad to the pants-type absorbent article so that 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 with each other.
At least a part of both ends of the absorbent pad in the width direction is sandwiched between the first joint and the absorbent body in the thickness direction.
A method for attaching absorbent pads, characterized in that both end edges of the absorbent pads in the width direction are brought into contact with the second joint in the width direction.

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