TWI801687B - Pants-type absorbent article, and method for attaching absorbent pad - Google Patents

Abstract

[Problem] To suppress the positional displacement of the absorbent pad when the underpants-type absorbent article and the absorbent pad are used together. [Solution] The pants-type absorbent article (1) to which an absorbent pad (100) can be attached includes a pair of leak-proof wall parts (40), and the leak-proof wall part (40) has a skin-engaging side part (42) The first joining part (61) of the opposing surfaces of the non-skin side part (43), and a pair of second joining parts (62) of joining the non-skin side part (43) to the absorbent main body (10) , when the absorbent pad (100) is attached to the pants-type absorbent article (1) in such a way that the center of the width direction of the pants-type absorbent article (1) is aligned with the center of the width direction of the absorbent pad (100), the The interval (W61) between the inner ends of the 1 joint part (61) in the width direction has a portion formed shorter than the length (W100) of the width direction of the absorbent pad (100), and the distance between the second joint part (62) The interval ( W62 ) between the inner ends in the width direction has a portion smaller than the length ( W100 ) of the absorbent pad ( 100 ) in the width direction.

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 installing an absorbent pad.

As for the underpants type absorbent article, there are known underpants type disposable diapers. For example, Patent Document 1 discloses a shorts-type disposable diaper, which has: a main body provided with an absorbent core; . [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. 2005-218876

[Problem to be Solved by the Invention]

In recent years, it has been proposed to install a disposable absorbent pad inside such a shorts-type disposable diaper as disclosed in Patent Document 1, and to reduce the number of shorts by replacing only the absorbent pad that absorbs excrement. Change frequency and usage of disposable diapers. By using the pants-type diaper and the absorbent pad in combination in this way, the labor and economic burden of changing the diaper can be reduced for the user (wearer). However, in the conventional method, when the wearer moves his or her body, the position of the absorbent pad tends to shift, causing problems such as leakage of excrement from the absorbent pad or deterioration of fit.

The present invention was developed in consideration of the above-mentioned conventional problems, and an object of the present invention is to suppress the positional displacement of the absorbent pad when the underpants-type absorbent article and the absorbent pad are used together. [Means to solve the problem]

The main invention for achieving the above-mentioned purpose is a kind of long direction, width direction and thickness direction intersecting each other in the unfolded state, and has: an absorbent main body, and a pair of leak-proof wall parts, which are arranged on the aforementioned absorbent body. The two sides of the main body in the width direction can stand up toward the skin side in the thickness direction, and the absorbent pad can be attached to the skin side in the thickness direction of the absorbent main body. It is characterized in that The above-mentioned pair of leak-proof wall parts respectively have: a skin side part, and a non-skin side part arranged closer to the non-skin side in the thickness direction than the skin side part, and has: a joint of the aforementioned skin side part and the aforementioned non-skin side part. A pair of first joining parts of at least a part of the facing surfaces of the skin side parts facing each other, and a pair of second joining parts of at least a part of the non-skin side parts joining the skin side of the absorbent main body. The junction part is formed by the center of the width direction of the pants-type absorbent article and the width of the absorbent pad in a state where the pants-type absorbent article and the absorbent pad are stretched in the longitudinal direction and the width direction. When the absorbent pad is attached to the pants-type absorbent article so that the centers of the directions are aligned, in the longitudinal direction, in the region where the pair of first joining parts are arranged, the The distance in the width direction between the inner ends has a portion formed shorter than the length in the width direction of the absorbent pad, and in the region where the pair of second joining parts are arranged in the length direction, the The interval in the width direction between the inner ends of the pair of second joining parts has a portion smaller than the length in the width direction of the absorbent pad. Other characteristics of the present invention will become clearer from the descriptions in this specification and the attached pages. [Effect of the invention]

According to the present invention, when the underpants-type absorbent article and the absorbent pad are used together, the positional displacement of the absorbent pad can hardly occur.

From the description in this manual and the attached pages, at least the following matters are clear. A shorts-type absorbent article having crossing longitudinal directions, width directions, and thickness directions in an unfolded state, and comprising: an absorbent main body, and a pair of leak-proof wall portions provided on the aforementioned absorbent body. The two sides in the width direction can stand up toward the skin side in the thickness direction, and the absorbent pad can be installed on the skin side in the thickness direction than the absorbent main body. The characteristics of the above-mentioned one are: The pair of anti-leakage wall portions respectively have: a skin side portion, and a non-skin side portion arranged closer to the non-skin side in the thickness direction than the skin side portion, and have: join the aforementioned skin side portion and the aforementioned non-skin side portion a pair of first joining parts of at least a part of the opposing surfaces facing each other, and a pair of second joining parts of joining at least a part of the non-skin side part to the skin side of the absorbent main body, In a state where the pants-shaped absorbent article and the absorbent pad are stretched in the longitudinal direction and the width direction, the center of the pants-shaped absorbent article in the width direction and the center of the absorbent pad in the width direction are When the absorbent pad is attached to the pants-type absorbent article in an aligned manner, in the longitudinal direction, in the region where the pair of first joining parts are arranged, the inner ends of the pair of first joining parts are opposite to each other. The gap in the width direction has a portion formed shorter than the length in the width direction of the absorbent pad, and in the region where the pair of second joining parts are arranged in the length direction, The distance in the width direction between the inner ends of the second joining portion has a portion smaller than the length in the width direction of the absorbent pad.

According to such a pants-type absorbent article, when attaching the absorbent pad, at least a part of the end portions in the width direction of the absorbent pad can be inserted between the pair of first joining portions (leakage-preventing wall portions) and the absorbent main body. , the movement of the absorbent pad in the thickness direction is restricted by the first joint portion. Moreover, the movement of the absorbent pad in the width direction is restricted by the pair of second joining portions pinching the outer ends (edges) in the width direction of the absorbent pad from both sides in the width direction. Thereby, positional displacement of an absorbing pad can be hard to generate|occur|produce.

In such an underpants-shaped absorbent article, it is desirable that the center of the second joining portion is located on the front side with respect to the center of the underpants-shaped absorbent article in the expanded state in the longitudinal direction.

According to such a pants-type absorbent article, when wearing, the absorbent pad is sandwiched from both sides in the width direction by the second joining portion in the region on the front side in the longitudinal direction where force from the wearer's feet tends to act. . Therefore, the absorbent pad is suppressed from shifting in the width direction in this region, and the positional shift of the absorbent pad is less likely to occur even when the wearer moves his body (legs).

In such an underpants-shaped absorbent article, it is desirable that the entirety of the second joining portion is located on the front side from the center of the underpants-shaped absorbent article in the expanded state in the longitudinal direction.

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

Such a pants-type absorbent article, wherein the absorbent main body has an absorbent core, and the absorbent core has a shortened length in the width direction in a region between the front end and the rear end in the longitudinal direction. In the narrowed portion, the second joining portion overlaps with the narrowed portion in the longitudinal direction, and is preferably located on the outer side of the absorbent core in the width direction.

According to such an underpants-type absorbent article, since the narrow part is provided in an absorptive core, it becomes difficult to prevent movement of a wearer's foot. In addition, by adjusting the positional relationship between the narrowed portion and the second joint, even when the wearer moves the foot greatly in the region where the narrowed portion is provided, the position of the absorbent pad can be effectively suppressed by the second joint. offset.

In such a pants-type absorbent article, it is desirable that the first joining portion is located on the inner side of the front end 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 enhanced by the first joining portion in the region on the inside in the width direction relative to the front end of the leak-proof wall portion. Thereby, when the absorbent pad is attached, the end portion in the width direction of the absorbent pad can be stably pressed by the leak-proof wall portion. Therefore, it is easy to suppress the detachment of the absorbent pad.

Such a pants-type absorbent article, wherein the absorbent pad has a pair of adhesive parts on both sides in the longitudinal direction, and the first joint part is used when attaching the absorbent pad to the pants-shaped absorbent article. In the longitudinal direction, it is desirable that the pair of sticky parts are located on the inner side than the position abutting against the pants-type absorbent article.

According to such an underpants-shaped absorbent article, the absorbent pad is adhered to the skin side of the underpants-shaped absorbent article at the portions provided with the adhesive parts at both ends in the longitudinal direction of the absorbent pad, and is firmly fixed. In addition, in the area between the adhesive parts in the longitudinal direction of the absorbent pad, the end part in the width direction of the absorbent pad is pressed from the skin side by the first joining part (leakage-preventing wall part). Therefore, it becomes difficult to generate|occur|produce positional displacement in the whole longitudinal direction of an absorbent pad.

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

According to such a pants-type absorbent article, when the absorbent pad is attached, the two end portions in the width direction of the absorbent pad are pinched from the width direction by the pair of second joining portions, and the inner end of the leak-proof wall portion Covers easily from the skin side. Therefore, positional displacement of the absorbent pad can be suppressed more easily.

In such an underpants-shaped absorbent article, it is desirable that the first joining portion and the second joining portion do not have overlapping portions in the longitudinal direction.

According to such a pants-type absorbent article, the portion where the standing height of the leakage-preventing wall portion is restricted by the first joining portion and the portion where the standing height of the leakage-preventing wall portion is restricted by the second joining portion deviate in the longitudinal direction, Thereby, it is possible to suppress the situation where the standing height of the leak-proof wall portion is largely limited. Therefore, both the position shift of the absorbent pad is suppressed, and it is difficult to cause a short-pants type absorbent article to lose its position. Deterioration of fit, side leakage of excrement, etc.

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

According to such a pants-type absorbent article, a so-called dry edge is formed on the outer end of the leak-proof wall part in the width direction. Therefore, when the underpants-type absorbent article is worn, the outer end of the leakage-preventing wall portion, which is likely to be in direct contact with the wearer's skin (feet), has a softer skin feel and is less likely to be exposed to the wearer. cause discomfort.

It is also clearly known that there is a shorts-type absorbent article, which has intersecting longitudinal direction, width direction, and thickness direction in an unfolded state, and is provided with an absorbent main body and a pair of leak-proof wall portions provided on the absorbent body. The two sides of the aforementioned width direction of the absorbent body can stand up toward the skin side of the aforementioned thickness direction, and the absorbent pad can be attached to the skin side of the aforementioned thickness direction than the aforementioned absorbent body. The above-mentioned pair of leak-proof wall parts respectively have: a skin side part, and a non-skin side part arranged on the non-skin side in the thickness direction more than the skin side part, and has a joint between the skin side part and the skin side part. A pair of first joining parts for at least a part of the opposing surfaces of the non-skin side part, and a pair of first joining parts for joining at least part of the non-skin side part to the skin side of the absorbent main body. The second joining portion is formed between the center of the pants-shaped absorbent article in the width direction and the absorbent pad in a state where the pants-shaped absorbent article and the absorbent pad are stretched in the longitudinal direction and the width direction. When the absorbent pad is attached to the pants-type absorbent article so that the centers in the width direction are aligned, at least a part of both ends of the absorbent pad in the width direction are sandwiched by the first junction in the thickness direction. Between the portion and the absorbent main body, both end edges of the absorbent pad in the width direction are in contact with the second joining portion in the width direction.

According to such a pants-type absorbent article, when attaching the absorbent pad, at least a part of the end portions in the width direction of the absorbent pad can be inserted between the pair of first joining portions (leakage-preventing wall portions) and the absorbent main body. , the movement of the absorbent pad in the thickness direction is restricted by the first joint portion. Moreover, the movement of the absorbent pad in the width direction is restricted by the pair of second joining portions pinching the outer ends (edges) in the width direction of the absorbent pad from both sides in the width direction. Thereby, positional displacement of an absorbing pad can be hard to generate|occur|produce.

It is also clearly known that there is a method for installing an absorbent pad, which has the longitudinal direction, the width direction, and the thickness direction intersecting each other with respect to the unfolded state, and has: an absorbent body, and a device in the aforementioned width direction provided on the aforementioned absorbent body. For a pants-type absorbent article with a pair of leak-proof wall parts that can stand upright toward the skin side in the thickness direction on both sides, the absorbent pad can be installed on the skin side in the thickness direction than the absorbent main body. The gasket installation method is characterized in that: the above-mentioned pair of leak-proof wall parts respectively have: a skin side part, and a non-skin side part arranged closer to the non-skin side in the thickness direction than the skin side part, and has: A pair of first joining parts that join at least a part of opposing surfaces of the skin side part and the non-skin side part, and at least a part of the non-skin side part joined to the absorbent main body. The pair of second joining parts on the skin side is for attaching the absorbent pad to the pants-shaped absorbent article so that the center of the pants-shaped absorbent article in the width direction is aligned with the center of the absorbent pad in the width direction. In the case of sexual articles, in the thickness direction, at least a part of both ends of the aforementioned absorbent pad in the aforementioned width direction is sandwiched between the aforementioned first joining portion and the aforementioned absorbent main body, so that the aforementioned absorbent pad in the aforementioned width direction Both end edges of the sheet are in contact with the second joining portion in the width direction.

According to such an absorbing pad installation method, when installing the absorbent pad, at least a part of the end portions in the width direction of the absorbent pad can be inserted between the pair of first joint portions (leakage-preventing wall portions) and the absorbent main body. , the movement of the absorbent pad in the thickness direction is restricted by the first joint portion. Moreover, the movement of the absorbent pad in the width direction is restricted by the pair of second joining portions pinching the outer ends (edges) in the width direction of the absorbent pad from both sides in the width direction. Thereby, positional displacement of an absorbing pad can be hard to generate|occur|produce.

===Implementation form=== Hereinafter, an embodiment of the underpants-type absorbent article of the present invention will be described by taking the underpants-type disposable diaper 1 for adults (hereinafter also simply referred to as "diaper 1") as an example. However, the diaper 1 of the present invention can also be used as shorts-type disposable diapers for infants, sanitary underwear, and the like.

<Structure of the shorts-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 an unfolded and stretched state. Fig. 3A is a schematic sectional view taken along line A-A of Fig. 2 . Fig. 3B is a schematic cross-sectional view taken along line B-B of Fig. 2 . FIG. 3C is a schematic cross-sectional view taken along line C-C of FIG. 2 . In addition, the "stretched state" is a state where each member constituting the diaper 1 is stretched until there are no wrinkles. Specifically, it is a state in which the size of each member constituting the diaper 1 (for example, the sheet member 14 described later) is extended until the size of the single member is equal to or close to the size.

The diaper 1 has a vertical direction, a left-right direction, and a front-rear direction intersecting each other in the underpants-shaped state of FIG. 1 , and a waist opening BH and a pair of leg openings LH are formed. The upper side in the vertical direction corresponds to the waist opening BH side, and the lower side corresponds to the crotch side. Also, the front side in the front-rear direction corresponds to the wearer's ventral side, and the rear side corresponds to the wearer's back side. In addition, in the unfolded state as shown in FIG. 2 , the diaper 1 has a longitudinal direction, a width direction, and a thickness direction intersecting each other. Hereinafter, one side in the longitudinal direction in the expanded state is also referred to as "abdominal side" or "front side", and the other side in the longitudinal direction is also referred to as "dorsal side" or "rear side". In addition, the above-mentioned width direction in the unfolded state is the same direction as the above-mentioned left-right direction in the pants-type state. The longitudinal direction in the expanded state is a direction along the up and down direction in the pants-shaped state. Moreover, the thickness direction is the direction in which the materials which comprise the diaper 1 are laminated|stacked, as shown to FIG. 3A and FIG. 3B. In the thickness direction, the side in contact with the wearer is defined as the skin side, and the opposite side is defined as the non-skin side.

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

In the diaper 1 in the unfolded state of FIG. 2 , the abdominal waist portion 20 and the back waist portion 30 are arranged along the left-right direction of the diaper 1 . And, the end portion of one side (front side) of the longitudinal direction of the absorbent main body 10 is disposed at the central portion of the abdominal waist portion 20 in the left-right direction, and the absorbent main body is disposed at the central portion of the dorsal waist portion 30 in the left-right direction. 10 is the end on the other side (rear side) in the longitudinal direction. From the unfolded state in FIG. 2 , the absorbent main body 10 is folded in half approximately at the center in the longitudinal direction, and the two sides of the abdominal waist portion 20 in the left and right direction and the two sides of the back waist portion 30 in the left and right direction are joined by welding or the like. , thereby forming the diaper 1 in a pant-shaped state.

The absorptive main body 10 includes side elastic members 41 that expand and contract in the longitudinal direction (the up-down direction of the diaper 1 ) on both sides in the left-right direction. Moreover, the absorptive main body 10 is equipped with the pair of leak-proof wall part 40 along the longitudinal direction at both side parts of the left-right direction. The anti-leakage wall portion 40 can stand up toward the skin side through the side elastic member 41 .

Moreover, the absorbent main body 10 has: an absorbent core 11 for absorbing excretion, a liquid-permeable skin-side sheet 12 arranged on the wearer's skin side rather than the absorbent core 11, 11 A liquid-impermeable non-skin side sheet 13 and a sheet member 14 on the non-skin side. The skin-side sheet 12 is folded back toward the non-skin side so that both sides in the left-right direction are rolled into the absorptive core 11 . The sheet member 14 is disposed on the non-skin side of the non-skin side sheet 13 , and has a leakage preventing wall portion 40 formed on the skin side of the skin side sheet 12 .

The absorbent core 11 is formed by forming liquid-absorbent fibers such as pulp fibers containing a superabsorbent polymer (so-called SAP) into a predetermined shape. Although the absorptive core 11 of this embodiment is a substantially hourglass shape in a planar view, it is not limited to this, For example, it may be a rectangular shape etc. in a planar view. In addition, the absorbent core 11 may be covered with a liquid-permeable core wrap sheet 15 .

The abdominal waist part 20 and the back waist part 30 respectively have: inner layer sheets 21, 31, outer layer sheets 22, 32 arranged on the non-skin side than the inner layer sheets 21, 31, and waist elastic members 23, 33 . The waist elastic members 23, 33 are arranged in the vertical direction between the inner layer sheets 21, 31 and the outer layer sheets 22, 32, and are fixed in the left and right directions in a stretched state. Therefore, the abdominal waist portion 20 and the back waist portion 30 fit closely to the waist of the wearer. In addition, a covering sheet may be provided to cover the upper end of the absorbent main body 10 from the skin side.

In the unfolded and stretched state in FIG. 2 , the abdominal waist portion 20 has a rectangular shape in plan view. The dorsal waist portion 30 has an overlapping portion 30A overlapping with the abdominal waist portion 20 in the front-rear direction, and an extending portion 30B extending downward from the abdominal waist portion 20 . The repeating portion 30A has a rectangular shape when viewed from above, and the extending portion 30B has an inverted trapezoidal shape when viewed from above. The buttocks of the wearer can be covered by the extended portion 30B. On the other hand, the abdominal waist portion 20 is shorter in the vertical direction than the back waist portion 30 and does not extend to the crotch side. Therefore, it is easy to walk without hindering the movement of the leg raised to the ventral side during walking or the like.

Moreover, the extension part elastic member 35 is provided in the extension part 30B of the back side waist part 30 along the lower end. 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 part 30B is fitted to the wearer's buttocks by the extension part elastic member 35, and the warping of the extension part 30B can be suppressed.

<About leak-proof wall part 40> The pair of leak-proof wall portions 40 are 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 also be formed by a different member from the absorbent main body 10 . The leak-proof wall portion 40 is formed by bending the sheet member 14 from the outside in the width direction to the inside at the bending line f1 shown in FIG. And was formed. In the following, in the leak-proof wall portion 40, the part that is folded 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 the "skin side part 42". The part of the side part 42 closer to the non-skin side in the thickness direction is called "non-skin side part 43". Moreover, the outer end in the width direction of the skin side part 42 is made into the front-end|tip 42a of the leakage prevention wall part 40. As shown in FIG.

As shown in FIGS. 3A to 3C , the leak-proof wall portion 40 of this embodiment has a two-layer laminated structure in which sheet members 14 are laminated in the thickness direction. Further, four side elastic members 41A ( 41 ) are arranged in a row in the left-right direction between the two-layered sheet members 14 constituting the skin side portion 42 . The four side elastic members 41A are arranged near the outer end (the front end 42 a ) in the width direction. Moreover, two side elastic members 41B ( 41 ) are arranged in a row in the left-right direction between the two-layered sheet members 14 constituting the non-skin side portion 43 . The two side elastic members 41B are arranged near the inner end in the width direction. However, the arrangement and number of the side elastic members 41A, 41B are not limited thereto.

The leak-proof wall portion 40 is fixed at the front end in the longitudinal direction by a pair of front end fixing portions 51 formed of an adhesive such as a hot-melt adhesive so that it cannot stand up toward the skin side of the absorbent main body 10 . The front end fixing part 51 has, as shown in FIG. The non-skin side fixing portion 512 between the non-skin side portion 43 and the skin side sheet 12.

Similarly, the pair of rear end fixing portions 52 formed at the rear end of the leak-proof wall portion 40 in the longitudinal direction by an adhesive such as a hot-melt adhesive cannot stand up toward the skin side of the absorbent main body 10. is fixed. Therefore, in the longitudinal direction, the portion of the sheet member 14 between the front end fixing portion 51 and the rear end fixing portion 52 becomes a portion where the leak-proof wall portion 40 can stand.

Also, in the pair of leak-proof wall parts 40, a part of the non-skin side of the skin side part 42 and the skin side of the non-skin side part 43 facing each other are mutually joined by a pair of first joining parts 61. . The first joining portion 61 is formed by applying an adhesive such as a hot melt adhesive along the longitudinal direction on the inner end portion in the width direction of the leak-proof wall portion 40 (see FIGS. 2 and 3B ). By joining the opposing surfaces of the skin side portion 42 and the non-skin side portion 43 with the first joining portion 61, the skin side portion 42 of the leak-proof wall portion 40 can easily maintain a flat (curved) surface when the diaper 1 is worn. Shape, and easy to fit the wearer's body.

In addition, in the pair of leak-proof wall parts 40, a part of the skin side area of the non-skin side part 43 is joined to the skin side of the absorbent main body 10 (skin side sheet 12) by a pair of second joining parts 62. . As shown in FIG. 2 , the second bonding portion 62 is formed between the two first bonding portions 61, 61 arranged on the abdominal side and the back side in the longitudinal direction by applying an adhesive such as a hot-melt adhesive. region (see Figure 2 and Figure 3C). In the area where the second joining portion 62 is provided, the height at which the leak-preventing wall portion 40 can rise toward the skin side is limited compared with the area where the second joining portion 62 is not provided when the diaper 1 is worn. Therefore, in the region where the second joining portion 62 is provided, the distance between the wearer's body and the absorbent main body 10 is shortened, and the fit of the absorbent main body 10 to the wearer's body can be easily maintained.

＜About 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 is detachably attached to the skin side of the absorbent main body 10 of the diaper 1 .

FIG. 4 shows a schematic plan view of the absorbent pad 100 and a schematic cross-sectional view thereof. The absorbent pad 100 is a substantially rectangular absorbent article in plan view as shown in FIG. 4 , with the long side being the long direction and the short side being the width. The longitudinal direction and width direction of the absorbent pad 100 are the same directions as the longitudinal direction and width direction of the diaper 1 in FIG. 2 . In addition, the absorbent pad 100 has a longitudinal direction, a width direction, and a thickness direction perpendicular to each other. However, the shape of the absorbent pad 100 is not limited to a rectangle, and the length (width) in the width direction may vary at predetermined positions in the longitudinal direction.

The absorbent pad 100 has substantially the same structure 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 has: a liquid-absorbent absorber 111 for absorbing excretion; a liquid-permeable skin-side sheet 112 arranged on the skin side in the thickness direction relative to the absorber 111; 111 is a liquid-impermeable non-skin side sheet 113 and a sheet member 114 that are closer to the non-skin side in the thickness direction. 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. structure, so the description will be omitted here. In addition, although not shown in FIG. 4 , a leak-proof wall portion corresponding to the leak-proof wall portion 40 of the diaper 1 may be provided on the absorbent pad 100 by the sheet member 114 or other members.

In addition, on the non-skin side in the thickness direction of the absorbent pad 100, adhesive portions 115 are provided at both ends in the longitudinal direction. Adhesive portion 115 is an area coated with an adhesive material such as a hot-melt adhesive. When the absorbent pad 100 is attached to the diaper 1 for use, by adhering the adhesive portion 115 to the side of the skin of the diaper 1, it is possible to suppress friction with respect to the diaper 1 . The position of the absorbent pad 100 is shifted. In addition, when the absorbent pad 100 is not in use, it is desirable that the adhesive portion 115 is not lost in adhesiveness by covering the adhesive portion 115 from the non-skin side with a protective sheet (not shown).

<How to install 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 unfolded and stretched state. FIG. 6A is a schematic cross-sectional view taken along line D-D of FIG. 5 . Fig. 6B is a schematic cross-sectional view taken along line E-E of Fig. 5 . 5 shows a state in which the absorbent pad 100 is attached to the diaper 1 so that the center of the width direction of the diaper 1 is aligned with the center of the width direction of the absorbent pad 100 .

When attaching the absorbent pad 100 to the diaper 1, first, the absorbent pad 100 is stacked 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. Moreover, the adhesive parts 115 provided at both ends in the longitudinal direction are pasted on the skin side of the diaper 1 (absorbent main body 10) so that the position of the absorbent pad 100 does not shift relative to the longitudinal direction of the diaper 1. fixed.

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 portion 43 of the pair of leak-proof wall portions 40 and the skin side 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 joining portion 61 and the absorbent main body 10 (skin side sheet 12 ) in the thickness direction. In the present embodiment, in the region where the pair of first joining parts 61 are arranged in the longitudinal direction, the distance W61 between the inner ends 61ei in the width direction of the first joining parts 61 has a length longer than that of the absorbent pad 100 in the width direction. (Width) W100 becomes shorter (W61<W100). Therefore, at least a part of the end portions 100er in the width direction of the absorbent pad 100 can be sandwiched between the first joining portion 61 and the thickness direction of the absorbent main body 10 . Thereby, 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 detachment of the absorbent pad 100 from the diaper 1 toward the skin side in the thickness direction is suppressed. .

In addition, in this 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 leak-proof wall portion in the area where the first joint portion 61 is provided The strength of 40 becomes high. Moreover, the end 100er in the width direction of the absorbent pad 100 is easily pushed in toward the skin side in the thickness direction by the stretching force generated by the side elastic member 41 disposed at a position overlapping the first joint portion 61 in the thickness direction. . Thereby, the movement of the absorbent pad 100 in the thickness direction can be reliably suppressed by the region where the first joining portion 61 is provided.

Finally, the position of the absorbent pad 100 is fixed by the pair of second joining parts 62 of the leak-proof wall part 40 so as to pinch from both sides in the width direction. 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 ) is aligned with the width direction of the pair of second joining parts 62 . The inner side end 62ei abuts against. In the present embodiment, in the region where the second joining parts 62 are disposed in the longitudinal direction, the distance W62 between the inner ends 62ei in the width direction of a pair of second joining parts 62 has a length equal to the length of the absorbent pad 100 in the width direction. (Width) The same as W100, or a portion shorter than W100 (W62<W100). Therefore, at least a part of the widthwise outer end 100eo of the absorbent pad 100 can be brought into contact with the widthwise inner end 62ei of the second joining portion 62 . Thereby, the movement of the absorbent pad 100 in the thickness direction is restricted by the second joining portion 62, and the deviation of the absorbent pad 100 in the width direction can be suppressed.

In addition, when the width W100 of the absorbent pad 100 is longer than the distance W62 in the width direction of the pair of second joining portions 62, a part of the end portion 100er in the width direction of the absorbent pad 100 is compressed in the width direction as shown in FIG. 6B . compressed state. That is, the absorbent pad 100 is compressed from both sides in the width direction by the pair of second joining portions 62 . In this case, it is easy to further restrict the movement of the absorbent pad 100 in the width direction, and it is easy to further suppress positional displacement.

By attaching the absorbent pad 100 in this way, the 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 his body, the positional displacement of the absorbent pad 100 is less likely to occur, and leakage of excrement and deterioration of fit can be suppressed. In addition, as shown in FIG. 5 , when 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 . Therefore, even if the adhesive portion 115 is not provided on the absorbent pad 100, the movement in the longitudinal direction of the absorbent pad 100 is restricted by the front end fixing portion 51 and the rear end fixing portion 52, thereby suppressing movement in the longitudinal direction. position offset.

Moreover, as shown in FIG. 5 , in the longitudinal direction of the diaper 1 in the unfolded state, the center CL62 of the second joining portion 62 is located on the front side (abdominal side) of the center CL of the diaper 1 . That is, the second joining portion 62 is provided on the front side of the diaper 1 . The area on the front side in the longitudinal direction is the area that is sandwiched between the wearer's feet (groin) when the diaper 1 is worn, and when the wearer moves the foot forward when walking or the like, A region where the position of the absorbent pad 100 attached to the diaper 1 is shifted tends to occur due to the force from both feet. On the other hand, in the diaper 1 of this embodiment, the absorbent pad 100 is sandwiched from both sides in the width direction by the second joining portion 62 provided in the region where the force from both feet is likely to act. This region absorbs the displacement of the pad 100 in the width direction (left-right direction).

In addition, in this embodiment, the whole 2nd joining part 62 is located in the front side (abdominal side) rather than 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 joining portion is located on the front side with respect to the center CL of the diaper 1 . Thereby, it is easier to suppress the deviation in the width direction 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 feet largely while wearing the diaper 1, the positional displacement of the absorbent pad 100 attached to the diaper 1 can be effectively suppressed.

Moreover, the absorbent core 11 of the diaper 1 has a "narrowed portion 11c" narrowed in the width direction in the region between the front end 11f and the rear end 11b in the longitudinal direction (see FIG. 5 ). That is, the length in the width direction of the narrowed portion 11c is greater than the maximum value of the length (width) W11f (W11b) in the width direction in the front end portion 11f (rear end portion 11b) in the longitudinal direction of the absorbent core 11. (width) W11c becomes narrower. As described above, since the absorptive core 11 is formed of liquid-absorbent fibers, it has higher rigidity than other parts of the absorptive main body 10 (for example, the skin-side sheet 12 and the like). Here, by narrowing the width W11c in the region near the center CL in the longitudinal direction (that is, the crotch portion of the wearer), both ends in the width direction of the highly rigid absorbent core 11 are less likely to hit the wearer's crotch. In the groin area, it is easy to move the feet and at the same time, it is not easy to cause discomfort to the wearer.

And the 2nd junction part 62 of the diaper 1 overlaps with the narrow part 11c in the longitudinal direction, and is arrange|positioned outside the absorptive core 11 in the width direction. Repeats with the narrowed part 11c in the long direction, and is more absorbent in the width direction The outer region of the core 11 is a region that is easily deformed by a compressive force in the width direction because it is sandwiched between the wearer's feet when the diaper 1 is worn. Therefore, when the absorbent pad 100 is used together, there is a concern that the positional displacement of the absorbent pad 100 is likely to occur in this region. On the other hand, in the present embodiment, the movement of the absorbent pad 100 in the left-right direction can be suppressed by providing the second joining portion 62 in this region. That is, by providing the narrowed portion 11c in the absorbent core 11, the movement of the wearer's foot is less likely to be hindered, and by adjusting the positional relationship between the narrowed portion 11c and the second joining portion 62, even the wearer Even when the foot is moved, the positional displacement of the absorbent pad 100 can be suppressed.

In addition, the first joining portion 61 is located on the inner side of the front end 42a of the leakage preventing wall portion 40 (skin side portion 42 ) in the width direction. The region of the inner end in the width direction of the skin side portion 42 is a region where the end 100er of the width direction of the absorbent pad 100 is restrained from the skin side when the absorbent pad 100 is attached to the diaper 1 (see FIG. 6A ). Here, in the vicinity of the inner end portion (that is, the region on the inner side in the width direction than the front end 42a), the skin side portion 42 and the non-skin side portion 43 are joined by the first joint portion 61 to improve the leakproofness of the leak-proof wall portion 40. Strength, whereby the absorbent pad 100 can be stabilized. Thereby, detachment of the absorbent pad 100 from the diaper 1 can be easily suppressed.

Also, as shown in FIG. 5 , when the absorbent pad 100 is installed on the diaper 1, the first joint portion 61 is located in the longitudinal direction, and the adhesive portions 115, 115 located at both ends of the absorbent pad 100 are in contact with the diaper 1. The part is more inward. That is, in the longitudinal direction, the first bonding 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 to the skin side of the diaper 1 at the portion where the adhesive portion 115 is provided in the absorbent pad 100 and fixed. On the other hand, in the longitudinal direction of the absorbent pad 100, in the area between the adhesive parts 115 and 115, the absorbent pad 100 is not attached to the diaper 1, and positional displacement may occur. Here, in this embodiment, by providing the first joining portion 61 in the area between the adhesive portions 115, 115, in this area, as shown in FIG. The portion 40 is restricted from the skin side. Thereby, even in the area where the adhesive part 115 is not provided in the absorbent pad 100, positional displacement and detachment of the absorbent pad 100 can be suppressed. In other words, positional displacement of the entire absorbent pad 100 is less likely to occur.

6B, in the width direction, the distance W40 between the inner ends 40ei of the pair of leak-proof wall parts 40 is narrower than the distance W62 between the inner ends 62ei of the pair of second joining parts 62 ( W40>W62). According to such a structure, when attaching the absorbent pad to the pants-type absorbent article, the pair of second joining portions 62, 62 sandwich the both ends 100er, 100er in the width direction of the absorbent pad 100 from the width direction, and It is easy to be covered from the skin side by the inner end 40ei of the leak-proof wall portion 40 . Therefore, positional displacement of the absorbent pad 100 can be suppressed more easily.

In addition, in the longitudinal direction, the first joint portion 61 and the second joint portion 62 have overlapping portions. That is, the first joint portion 61 and the second joint portion 62 are provided at positions shifted from each other in the longitudinal direction. In the leak-proof wall part 40 of this embodiment, the standing height is limited because the skin side part 42 and the non-skin side part 43 are joined at the part where the first joint part 61 is provided. Moreover, since the non-skin side part 43 and the absorbent main body 10 (skin side sheet 12) are joined at the part where the second joining part 62 is provided, the standing height is limited. Therefore, assuming that when 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 in the position is double restricted, and when the diaper 1 is worn, Sometimes there is concern that the fit may deteriorate or 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 repeatedly provided in the longitudinal direction, it is suppressed that the standing height of the leak-proof wall portion 40 is greatly limited. Therefore, deterioration of adhesiveness, side leakage of excrement, and the like can be easily suppressed.

In addition, a predetermined distance d is provided between the outer end 62eo of the second joining portion 62 and the outer end 40eo of the leak-proof wall portion 40 in the width direction. That is, in the width direction, the outer end 40eo of the leak-proof wall portion 40 is not provided with an adhesive for forming the second joining portion 62, and becomes a so-called dry edge. The outer end 40eo of the leak-proof wall portion 40 is a portion with a high possibility of directly contacting the skin (feet) of the wearer when the diaper 1 is worn. Therefore, if the outer end 40eo is used as a dry edge, the skin feel becomes softer when worn, and it is less likely to give the wearer an uncomfortable feeling.

===Other implementation forms=== Although the embodiments of the present invention have been described above, the above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to limit the present invention for explainers. In addition, the present invention can be changed and improved without departing from the gist thereof, and it goes without saying that the present invention also includes equivalents thereof.

Although the above-mentioned embodiment exemplifies the diapers in which the different components of the abdominal waist portion 20 and the back waist portion 30 are separated, a crotch portion is provided between the abdominal waist portion 20 and the back waist portion 30, and the abdominal waist portion 20 It may be a continuous member with the back side waist part 30.

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

1: Diapers (absorbent articles for shorts)

10: Absorbent body

11: Absorbent core

11c: Constriction

11f: front end

11b: Rear end

12: Skin side thin slice

13: Non-skin side sheet

14: Thin sheet member

15: Core cladding sheet

20: Abdominal waist

21: inner sheet

22: outer sheet

23: Waist elastic member

30: back waist

30A: Repeat Department

30B: extension part

31: inner layer sheet

32: outer sheet

33: waist elastic member

35: Extended elastic member

40: leak-proof wall

40ei: inner side

40eo: Outer side

41: Side elastic member (elastic member)

41A, 41B: side elastic member (elastic member)

42: Side of the skin

42a: front end

43: Non-skin side

51: Front end fixing part

511: skin side fixing part

512: non-skin side fixed part

52: Rear end fixing part

61: 1st junction

61ei: medial end

62: 2nd junction

62ei: medial end

62eo: Outer side

62eb: rear end

100: absorbing gasket

100er: end (width direction

100eo: Outer end (width direction)

111: absorber

112: Skin side flakes

113: Non-skin side sheet

114: sheet member

115: Adhesive part

W61: Space (the first junction part)

W62: Space (the second joint part)

W100: Length in the width direction (width)

CL: center

CL62: center

W11b: Length in the width direction (width)

W11c: Length in the width direction (width)

W11f: Length in the width direction (width)

[ Fig. 1 ] is a front view of a short-type disposable diaper 1 . [ Fig. 2 ] It is a schematic plan view of the diaper 1 in an unfolded and stretched state. [ Fig. 3 ] Fig. 3A is a schematic cross-sectional view taken along the line A-A of Fig. 2 . Fig. 3B is a schematic cross-sectional view taken along line B-B of Fig. 2 . FIG. 3C is a schematic cross-sectional view taken along line C-C of FIG. 2 . [ FIG. 4 ] is a schematic plan view and a schematic cross-sectional view of the absorbent pad 100 . [ Fig. 5] Fig. 5 is a schematic plan view showing a state where the absorbent pad 100 is attached to the diaper 1 in an unfolded and stretched state. [ Fig. 6 ] Fig. 6A is a schematic sectional view taken along line D-D of Fig. 5 . Fig. 6B is a schematic cross-sectional view taken along line E-E of Fig. 5 .

1: Shorts type absorbent article

10: Absorbent body

11: Absorbent core

11b: Rear end

11c: Constriction

11f: front end

20: Abdominal waist

21: inner sheet

22: outer sheet

30: back waist

30A: Repeat Department

30B: extension part

31: inner layer sheet

32: outer sheet

51: Front end fixing part

52: Rear end fixing part

61: 1st junction

62: 2nd junction

100: absorbing gasket

115: Adhesive part

CL62: center

62eb: rear end

W100: Length in the width direction (width direction)

W11b: Length in the width direction (width)

W11c: Length in the width direction (width)

W61: Space (the first junction part)

W62: Space (the second joint part)

W11f: Length in the width direction (width)

CL: Center

Claims (11)

A shorts-type absorbent article having crossing longitudinal directions, width directions, and thickness directions in an unfolded state, and comprising: an absorbent main body, and a pair of leak-proof wall portions provided on the aforementioned absorbent body. The two sides in the width direction can stand up toward the skin side in the thickness direction, and the absorbent pad can be installed on the skin side in the thickness direction than the absorbent main body. The shorts-type absorbent article is characterized by: The pair of anti-leakage wall portions respectively have: a skin side portion, and a non-skin side portion arranged closer to the non-skin side in the thickness direction than the skin side portion, and have: join the aforementioned skin side portion and the aforementioned non-skin side portion a pair of first joining parts of at least a part of the opposing surfaces facing each other, and a pair of second joining parts of joining at least a part of the non-skin side part to the skin side of the absorbent main body, In a state where the pants-shaped absorbent article and the absorbent pad are stretched in the longitudinal direction and the width direction, the center of the pants-shaped absorbent article in the width direction and the center of the absorbent pad in the width direction are When the absorbent pad is attached to the pants-type absorbent article in an aligned manner, in the longitudinal direction, in the region where the pair of first joining parts are arranged, the inner ends of the pair of first joining parts are opposite to each other. The interval in the width direction of the aforementioned absorbent pad has a length longer than the aforementioned width direction of the aforementioned absorbent pad. In the shortened part, in the region where the pair of second joining parts are arranged in the aforementioned longitudinal direction, the interval in the width direction between the inner ends of the pair of second joining parts is smaller than that of the absorbent pad. The portion of the aforementioned widthwise length. In the underpants-shaped absorbent article according to claim 1, in the longitudinal direction, the center of the second joining portion is located on the front side of the center of the underpants-shaped absorbent article in the unfolded state. The underpants-shaped absorbent article according to claim 1 or 2, wherein, in the longitudinal direction, the entirety of the second joining portion is located more forward than the center of the underpants-shaped absorbent article in the unfolded state. side. The pants-type absorbent article described in claim 1, wherein the absorbent main body has an absorbent core, and the absorbent core has the aforementioned In the narrowed part whose length in the width direction becomes short, the said 2nd junction part overlaps with the said narrowed part in the said longitudinal direction, and is located outside the said absorptive core in the said width direction. The underpants-shaped absorbent article according to claim 1, wherein the first joining portion is located on the inner side of the front end of the leak-proof wall in the width direction. The underpants-shaped absorbent article described in claim 1, wherein the absorbent pad has a pair of adhesive parts on both sides in the longitudinal direction, and the first joint part attaches the absorbent pad to the underpants-shaped absorbent article. In the case of an absorbent article, in the longitudinal direction, the pair of sticky parts are located on the inner side of a position that abuts on the pants-type absorbent article. The underpants-shaped absorbent article according to claim 1, wherein, in the width direction, the distance between the inner ends of the pair of leak-proof wall portions is greater than the distance between the inner ends of the pair of second joining portions. The interval is narrower. The underpants-type absorbent article according to claim 1, wherein the first joining portion and the second joining portion do not have overlapping portions in the longitudinal direction. In the pants-shaped absorbent article according to claim 1, a predetermined distance is provided between the outer end of the second joining portion and the outer end of the leak-proof wall portion in the width direction. A shorts-type absorbent article having crossing longitudinal directions, width directions, and thickness directions in an unfolded state, and comprising: an absorbent main body, and a pair of leak-proof wall portions provided on the aforementioned absorbent body. Both sides in the width direction can stand up toward the skin side in the aforementioned thickness direction, The pants-type absorbent article in which the absorbent pad can be attached to the skin side in the thickness direction of the absorbent main body is characterized in that the pair of leak-proof wall parts each have: a skin side part, and a The non-skin side portion which is closer to the non-skin side in the thickness direction than the skin side portion, and has a pair of at least a part of the opposing surfaces of the skin side portion and the non-skin side portion which are opposed to each other. The first joining part and the pair of second joining parts joining at least a part of the non-skin side part to the skin side of the absorbent main body are arranged so that the pants-type absorbent article and the absorbent pad face the longitudinal direction. and the absorbent pad is attached to the pants-shaped absorbent article so that the center of the pants-shaped absorbent article in the width direction is aligned with the center of the absorbent pad in the width direction in the state where the width direction is stretched. , at least a part of both ends of the absorbent pad in the width direction is sandwiched between the first joining portion and the absorbent main body in the thickness direction, and both ends of the absorbent pad in the width direction The edge is in contact with the second joining portion in the width direction. A method for installing an absorbent pad, which has intersecting longitudinal direction, width direction, and thickness direction relative to the unfolded state, and has: an absorbent body, and both sides of the aforementioned width direction of the absorbent body, which can be Leak prevention of a pair standing up toward the skin side in the thickness direction In the pants-type absorbent article on the wall, the absorbent pad can be installed on the skin side in the thickness direction of the absorbent main body. : a skin side portion, and a non-skin side portion disposed closer to the non-skin side in the thickness direction than the skin side portion, and having: opposing surfaces joining the skin side portion and the non-skin side portion to each other A pair of at least a part of the first joining portion and a pair of second joining portions joining at least a part of the non-skin side portion to the skin side of the absorbent main body are based on the pants-type absorbent article. When attaching the absorbent pad to the pants-shaped absorbent article so that the center of the width direction is aligned with the center of the width direction of the absorbent pad, the absorbent pad in the width direction is aligned in the thickness direction. At least a part of both end portions of the pad is sandwiched between the first joint portion and the absorbent main body, and the two end edges of the absorbent pad in the width direction abut against the second joint portion in the width direction.

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