JP6982973B2 - Pants type absorbent article - Google Patents

Description

The present invention relates to a pants-type absorbent article.

The pants-type absorbent article has an absorbent core that absorbs excrement such as urine. A through hole extending in the longitudinal direction is provided in the central portion in the width direction of the absorbent core disclosed in Patent Document 1. According to such an absorbent core, the excrement liquid diffuses in the longitudinal direction, so that the excrement liquid is well absorbed.

Japanese Unexamined Patent Publication No. 2013-255571

The absorbent core transmural hole in origin that a likely bent along the longitudinal direction. However, it is not comfortable to wear.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a pants-type absorbent article that is comfortable to wear.

The main invention for achieving the above object is a pants-type absorbent article having a vertical direction, a horizontal direction, and a front-rear direction, which has an absorbent core and is folded in half in the longitudinal direction to obtain the longitudinal direction. Has an absorbent body along the vertical direction and a pair of belt portions each having an elastic region that expands and contracts in the lateral direction, and the absorbent core has the absorbent core in the central portion in the horizontal direction. The sex core has a fold-inducing region that guides the sex core to bend along the longitudinal direction, and the fold-inducing region is above the lower end in the longitudinal direction of the pants-type absorbent article and after the anterior-posterior direction. Arranged on the side, at least a part of the stretchable region of the rear belt portion traverses the fold-inducing region, and the absorbent cores are located on both lateral sides of the fold-inducing region. The absorbent core has a pair of second fold-inducing regions that guide the absorbent core to bend along the longitudinal and lateral directions, and at least a portion of the stretchable region of the posterior belt portion. A pants-type absorbent article that crosses a pair of the second fold-inducing regions and is characterized in that the absorbent core is more easily bent in the fold-inducing region as compared to the second fold-inducing region. be.
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, it is possible to provide a pants-type absorbent article having a good fit and a comfortable fit by inserting an absorbent core into a crack in the buttocks of the wearer.

It is a perspective view of the pants type disposable diaper 1. It is a schematic plan view of the diaper 1 in the unfolded and stretched state as seen from the non-skin side. FIG. 2 is a schematic cross-sectional view taken along the line I-I of FIG. It is a schematic plan view of the diaper 1 in the expanded and extended state. It is a top view explaining the absorbent core 11. It is a top view explaining the buttock part 11C of the absorbent core 11. 7A is a sectional view taken along line I-I of FIG. 6, FIG. 7B is a sectional view taken along line II-II of FIG. 6, FIG. 7C is a sectional view taken along line III-III of FIG. It is sectional drawing of IV line. It is a schematic plan view of the diaper 1 of the second embodiment in the expanded and extended state.

The description of this specification and the accompanying drawings will clarify at least the following matters.
A pants-type absorbent article having a vertical direction, a horizontal direction, and a front-rear direction, which has an absorbent core and is folded in half in the longitudinal direction, and the absorbent body has the longitudinal direction along the longitudinal direction. And a pair of belt portions each having an elastic region that expands and contracts in the lateral direction, and the absorbent core is such that the absorbent core bends along the longitudinal direction at the central portion in the lateral direction. The fold-inducing region is arranged above the lower end of the pants-type absorbent article in the vertical direction and on the rear side in the front-rear direction, and the fold-inducing region is arranged on the rear side of the pants-type absorbent article. At least a part of the stretchable region of the belt portion crosses the fold-inducing region, and the absorbent core has the absorbent core in the vertical direction and on both sides of the lateral direction of the fold-inducing region. It has a pair of second fold guide regions that guide it to bend along the lateral direction, and at least a part of the stretchable region of the belt portion on the rear side crosses the pair of the second fold guide regions. The pants-type absorbent article is characterized in that the absorbent core is more easily bent in the fold-induction region than in the second fold-induction region.

According to such a pant-type absorbent article, enter the absorbent core to the buttocks of the crevices of the wearer, fit is not good. In addition, the absorbent core bends and adheres along the rounded portions on both sides of the buttock crevice of the wearer. Therefore, the fit is good and it is comfortable to wear.

The pants-type absorbent article is characterized in that, in the folding induction region, the basis weight of the absorbent core is lower than that of the surrounding area.

According to such a pants-type absorbent article, the absorbent core is easily bent in the folding induction region.

In such a pants-type absorbent article, the absorbent core has the absorbent core along the vertical direction and the lateral direction at the end side on the rear side of the folding guidance region in the longitudinal direction. It has a third fold guide region that guides it to bend, and at least a part of the stretchable region of the belt portion on the rear side crosses the third fold guide region and is compared with the third fold guide region. The pants-type absorbent article is characterized in that the absorbent core is more easily bent in the folding induction region.

According to such a pants-type absorbent article, the absorbent core bends and adheres along the rounded portion on the upper side of the wearer's buttocks. Therefore, the fit is good and it is comfortable to wear.

In such a pants-type absorbent article, the absorbent core extends over the entire width of the absorbent core in the lateral direction between the second fold induction region and the third fold induction region in the vertical direction. The pants-type absorbent article is characterized in that the absorbent core has a non-folding guide region that is less likely to bend than the second fold guide region and the third fold guide region.

According to such a pants-type absorbent article, the excrement can be firmly absorbed in the non-folding induction region, and the back leakage can be suppressed. Further, by arranging the non-fold guide region between the second fold guide region and the third fold guide region, the non-fold guide region can easily follow the buttocks in conjunction with the second fold guide region and the third fold guide region. Become.

In the pants-type absorbent article, the second fold guide region and the third fold guide region are a vertically long portion that is longer in the vertical direction than the horizontal direction and a vertically long portion that is longer in the vertical direction than the horizontal direction. The long horizontally long portions form an intersecting shape, and in the second folding guidance region, the vertically long portion has a longer vertical length than the horizontally long portion, and the third folding portion is formed. In the induction region, the pants-type absorbent article is characterized in that the length of the vertically elongated portion in the vertical direction is longer than the length of the horizontally elongated portion in the lateral direction.

According to such a pants-type absorbent article, in the second fold guide region and the third fold guide region, the absorbent core tends to bend along the wearer's waist circumference and fits better to the wearer's buttocks. Therefore, it is comfortable to wear.

In the pants-type absorbent article, in the second fold guide region and the third fold guide region, a plurality of the vertically elongated portions are arranged in the horizontal direction, and the absorbent core is the said in the horizontal direction. The absorptive core is located between the fold guide region and the second fold guide region, and between the plurality of vertically elongated portions in the lateral direction, as compared with the second fold guide region and the third fold guide region. It is a pants-type absorbent article that is difficult to bend and has a second non-folding induction region that is longer in the vertical direction than in the horizontal direction.

According to such a pants-type absorbent article, the second non-folding guide region serves as a support, and the absorbent core tends to bend along the wearer's waistline to fit the wearer's buttocks better. Therefore, it is comfortable to wear.

In such a pants-type absorbent article, the absorbent core has a fourth folding guide region in the central portion in the lateral direction, which guides the absorbent core to bend along the vertical direction. The fourth fold guide region is arranged above the lower end in the vertical direction of the pants-type absorbent article and on the front side in the front-rear direction, and at least one of the stretchable regions of the belt portion on the front side. It is a pants-type absorbent article characterized in that the portion crosses the fourth folding guide region.

According to such a pants-type absorbent article, the absorbent core tends to bend convexly toward the non-skin side along the wearer's lower abdomen (particularly the male genitals). Therefore, the fit is good and it is comfortable to wear.

In such a pants-type absorbent article, the absorbent core induces the absorbent core to bend along the longitudinal direction and the lateral direction on both sides of the fourth folding induction region in the lateral direction. It has a pair of fifth fold guidance regions, and the fourth fold guidance region and the fifth fold guidance region in the lateral direction are described as compared with the fourth fold guidance region and the fifth fold guidance region. It is a pants-type absorbent article characterized in that the absorbent core is difficult to bend and has a third non-folding induction region that is longer in the vertical direction than in the horizontal direction.

According to such a pants-type absorbent article, the excrement can be firmly absorbed in the third non-folding induction region, and lateral leakage can be suppressed.

In such a pants-type absorbent article, the absorbent core has an inseam portion located in the inseam of the wearer when worn, and the inseam portion is provided with both the fold guide region and the fourth fold guide region. It is a pants-type absorbent article characterized by having a portion that has not been removed.

According to such a pants-type absorbent article, it is possible to prevent the inseam portion of the absorbent core from bending convexly toward the skin and hitting the inseam of the wearer. Therefore, it is comfortable to wear.

In such a pants-type absorbent article, the absorbent core has a sixth folding guide region in the inseam portion that guides the absorbent core to bend along the longitudinal direction and the lateral direction. It is a pants-type absorbent article characterized by.

According to such a pants-type absorbent article, the absorbent core bends along the wearer's inseam. Therefore, the fit is good and it is comfortable to wear.

In such a pants-type absorbent article, the absorbent core has a narrow portion in the central portion in the longitudinal direction, which is narrower in the lateral direction than the end portion in the longitudinal direction, and the folding guidance region. At least a part of the pants-type absorbent article is located in the longitudinal direction on the rear end side of the absorbent core with respect to the narrow portion.

According to such a pants-type absorbent article, the fold-inducing region is likely to be located in the crevice of the wearer's buttocks, and the absorbent core is likely to enter the crevice of the wearer's buttocks.

Hereinafter, embodiments of the "pants-type absorbent article" of the present invention will be described by taking a disposable diaper for adults as an example. However, the pants-type absorbent article of the present invention can also be used as, for example, disposable diapers for children, sanitary products (shorts-type napkins), and the like.

=== First Embodiment ===
<< Overall configuration of diaper 1 >>
FIG. 1 is a perspective view of a pants-type disposable diaper 1 (hereinafter referred to as a diaper). FIG. 2 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the non-skin side. FIG. 3 is a schematic cross-sectional view taken along the line I-I of FIG.

The diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction, and as shown in FIG. 3, has a thickness direction in which each member is laminated. In the vertical direction, the side that is the torso side of the wearer is the upper side, and the side that is the inseam side of the wearer is the lower side. In the anterior-posterior direction, the ventral side of the wearer is the front side, and the dorsal side of the wearer is the posterior side. In the thickness direction, the side in contact with the wearer is the skin side, and the opposite side is the non-skin side.

The diaper 1 has an absorbent main body 10 having a rectangular shape in a plan view, and an exterior body 20 located on the non-skin side of the absorbent main body 10. The exterior body 20 includes a ventral exterior body 21 (belt portion) located on the front side in the front-rear direction, a dorsal exterior body 22 (belt portion) located on the rear side in the front-rear direction, and an inseam exterior body 23 connecting them. have. The members adjacent to each other in the thickness direction are joined with an adhesive or the like.

Further, the ventral exterior body 21 is located on one end side of the absorbent body 10 in the longitudinal direction, and the dorsal exterior body 22 is located on the other end side of the absorbent body 10 in the longitudinal direction. In the longitudinal direction of the absorbent body 10, the side where the ventral exterior body 21 is located is the front side, and the side where the dorsal exterior body 22 is located is the rear side. Further, the inseam exterior body 23 is located closer to the skin than the ventral exterior body 21 and the dorsal exterior body 22.

In the diaper 1 of the present embodiment, the exterior body 20 is composed of three members, but the present invention is not limited to this. For example, the ventral exterior body 21, the dorsal exterior body 22, and the inseam exterior body 23 may be one member. Further, the inseam exterior body 23 may not be provided.

In the unfolded diaper 1 shown in FIG. 2, the absorbent body 2 is folded in half at the central CL in the longitudinal direction, and the ventral exterior body 21 has both lateral sides and the dorsal exterior 22 laterally. Is joined by welding or the like to form the pants type shown in FIG. That is, the longitudinal direction of the absorbent body 10 is along the vertical direction of the diaper 1, and the ventral exterior body 21 and the dorsal exterior body 22 are connected in an annular shape to form a waist circumference opening 1a and a pair of leg circumference openings 1b. .. Hereinafter, the region where the ventral exterior body 21 and the dorsal exterior body 22 are joined is referred to as an end joining region 24.

As shown in FIG. 3, the absorbent main body 10 includes an absorbent core 11, a top sheet 12 located on the skin side of the absorbent core 11, and a back sheet 13 located on the non-skin side of the absorbent core 11. Have.

The absorbent core 11 is a member that absorbs and retains excrement such as urine, and is formed of, for example, a liquid absorbent fiber such as a pulp fiber mixed with a highly absorbent polymer (SAP). Although not shown, the outer peripheral surface of the absorbent core 11 may be covered with a liquid-permeable sheet such as tissue paper or a non-woven fabric.

The top sheet 12 is a liquid permeable sheet, and for example, a hydrophilic air-through nonwoven fabric, a spunbonded nonwoven fabric, or the like is used. The back sheet 13 has a two-layer structure of a liquid-impermeable sheet 13a and a liquid-permeable sheet 13b arranged on the non-skin side thereof. As the liquid permeable sheet 13a, for example, a resin film or the like is used, and as the liquid permeable sheet 13b, for example, a flexible non-woven fabric or the like is used. The back sheet 13 may have a one-layer structure of the liquid impermeable sheet 13a.

Further, although details are not shown, as shown in FIG. 1, three-dimensional gathered portions 14 that can stand up on the skin side may be provided on both sides of the absorbent main body 10 in the lateral direction.

As shown in FIG. 2, the ventral exterior body 21 and the dorsal exterior body 22 have a waist circumference region 211,221 in which the end joint region 24 is located in the vertical direction, and a waist circumference region 211,221 below the waist circumference region 211,221, respectively. It has inseam side regions 212 and 222. The waist circumference regions 211 and 221 have a rectangular shape in a plan view. The inseam side regions 212 and 222 have a substantially trapezoidal shape, and the width becomes narrower toward the lower side. The dorsal exterior body 22 has a larger inseam side region 222 than the ventral exterior body 21, and can cover the buttocks of the wearer.

As shown in FIG. 3, the ventral exterior body 21 and the dorsal exterior body 22 are the skin side sheets 213 and 223 located on the skin side and the non-skin side sheets 214 and 224 located on the non-skin side, respectively. , And have at least the stretchable nonwoven fabrics 215 and 225, which are located between them and have elasticity in the lateral direction of the diaper 1.

The skin-side sheets 213 and 223 and the non-skin-side sheets 214 and 224 are preferably flexible sheets, and for example, spunbonded non-woven fabric, SMS non-woven fabric and the like are used.

The stretchable non-woven fabrics 215 and 225 have, for example, a polyurethane-based elastomer which is a thermoplastic elastomer fiber having elasticity and polypropylene (PP) which is a polyolefin-based resin which is a thermoplastic resin fiber having inelasticity. , A non-woven fabric that has been subjected to appropriate stretching treatment such as gear stretching. By this stretching treatment, the stretchable nonwoven fabrics 215 and 225 have elasticity in the horizontal direction and the vertical direction of the diaper 1. The stretching treatment may be performed in a direction orthogonal to each other, or may be performed only in a predetermined direction. When the stretching treatment is performed only in a predetermined direction, elasticity in the predetermined direction is exhibited, but since the orientation of all the fibers is not always along the predetermined direction, the elasticity is also in the direction orthogonal to the predetermined direction. Is expressed.

The skin side sheets 213, 223, the non-skin side sheets 214, 224, and the stretchable nonwoven fabrics 215, 225 are joined by a plurality of scattered welded portions 25a, 25b (for example, an ultrasonic welded region). Therefore, it is softer to the touch than, for example, when it is joined by a solidifying adhesive. Further, due to the contraction of the stretchable nonwoven fabrics 215 and 225 between the welded portions 25a and 25b, the skin side sheets 213 and 223 and the non-skin side sheets 214 and 224 are curved outward in the thickness direction and protrude. do. That is, since the skin-side sheets 213 and 223 and the non-skin-side sheets 214 and 224 swell between the welded portions 25a and 25b, the skin feels softer and a visually soft impression can be given to the user.

Further, the stretchable nonwoven fabrics 215 and 225 have elasticity in the horizontal direction and the vertical direction of the diaper 1. Further, the welded portions 25a and 25b are scattered at relatively narrow intervals as shown in FIG. Therefore, in the diaper 1 of the present embodiment, it extends in multiple directions and fine swelling (wrinkles) is generated, and unidirectional wrinkles (vertical wrinkles, etc.) peculiar to the diaper can be prevented. Good aesthetics.

An elastic film may be used instead of the elastic nonwoven fabrics 215 and 225. However, since the thickness of the elastic film is almost uniform, the bulges of the skin-side sheets 213 and 223 and the non-skin-side sheets 214 and 224 between the welded portions 25a and 25b are easily crushed. On the other hand, since the stretchable nonwoven fabrics 215 and 225 have an increased thickness between the welded portions 25a and 25b, the bulges of the skin-side sheets 213 and 223 and the non-skin-side sheets 214 and 224 are not easily crushed, and the softness and aesthetics of the skin are aesthetically pleasing. You can keep your sex.

Further, among the regions where the welded portions 25a and 25b are scattered, the first dotted region X, which is a region overlapping the absorbent main body 10 in the thickness direction, and the other second dotted region Y, the welded portions. The shapes of 25a and 25b and the ratio of the welded portions 25a and 25b per unit area may be different.

In the first scattered region X shown in FIG. 2, substantially rectangular welded portions 25a inclined by 45 degrees or −45 degrees with respect to the lateral direction are alternately arranged. In the second dotted region Y, the circular welded portions 25b are arranged in a staggered manner.

Further, the area of the welded portion 25b per unit area is smaller in the second dotted area Y than in the first scattered area X. Therefore, in the waist circumference regions 211 and 221 where problems such as sweat and stuffiness are likely to occur, it is possible to suppress the inhibition of air permeability by the welded portion 25b, and it is possible to secure appropriate air permeability. On the other hand, in the first scattered region X, the contraction of the ventral exterior body 21 and the dorsal exterior body 22 is appropriately suppressed, and the lateral contraction of the absorbent main body 10 can be reduced.

Further, in the ventral exterior body 21 and the dorsal exterior body 22, a plurality of thread-like elastic members 26 (for example, thread rubber or the like) are arranged in the regions along the waist circumference opening 1a and the leg circumference opening 1b. That is, since the waist circumference and the leg circumference of the diaper 1 are firmly adhered to the wearer by the thread-like elastic member 26, it is possible to prevent the diaper 1 from slipping off and leaking from the leg circumference. On the other hand, in the other parts, the stretchable non-woven fabric 215 and 225 gently fits the wearer over the entire surface, so that the feeling of tightening is reduced.

The inseam exterior body 23 has a substantially hourglass shape in a plan view curved inward in the lateral direction at the central portion in the longitudinal direction. Further, as shown in FIG. 3, the inseam exterior body 23 is located between the skin side sheet 231 located on the skin side, the non-skin side sheet 232 located on the non-skin side, and the vertical direction of the diaper 1. It has a stretchable nonwoven fabric 233 having elasticity in the direction (longitudinal direction of the absorbent body 10). These sheets 231 to 233 are joined by a plurality of welded portions (for example, a welded portion 25b similar to the second dotted region Y).

The elastic non-woven fabric 233 of the inseam exterior 23 allows the absorbent core 11 to adhere to the inseam of the wearer, and even if the weight of the absorbent core 11 increases due to excretion, the diaper 1 can be suppressed from hanging down. The stretchable nonwoven fabric 233 may have elasticity in the horizontal direction of the diaper 1 or may have elasticity in the vertical direction and the horizontal direction of the diaper 1. Further, a plurality of thread-like elastic members 26 are arranged in the region of the inseam exterior body 23 along the leg circumference opening 1b, so that the inseam exterior body 23 is in close contact with the wearer's leg circumference.

<< About Absorbent Core 11 >>
FIG. 4 is a schematic plan view of the unfolded and stretched diaper 1, and describes the positional relationship between the stretchable region 216 of the dorsal exterior body 21 and the stretchable region 226 of the ventral exterior body 22 and the absorbent core 11. It is a figure. The stretched state of the diaper 1 is a state in which the diaper 1 is stretched without wrinkles, and the dimensions of each member constituting the diaper 1 (for example, the sheet constituting the exterior body 20) match the dimensions of the individual member. Or it is in a stretched state until it reaches a length close to it.

FIG. 5 is a plan view illustrating the absorbent core 11. FIG. 6 is a plan view illustrating the buttock portion 11C of the absorbent core 11. 7A is a sectional view taken along line I-I of FIG. 6, FIG. 7B is a sectional view taken along line II-II of FIG. 6, and FIG. 7C is a sectional view taken along line III-III of FIG. 7D is a cross-sectional view taken along the line IV-IV of FIG.

The absorbent core 11 has a "lower abdominal position 11A 'located at the lower abdomen of a wearer, the" crotch lower position 11B ", and" hip position 11C "located buttocks of the wearer. In FIG. 4, the portion overlapping with the ventral exterior body 21 is referred to as the lower abdominal portion 11A, the portion overlapping with the dorsal exterior body 22 is referred to as the buttock portion 11C, and the portion in between is referred to as the inseam portion 11B.

However, the range of the "inseam portion 11B" shown in FIG. 4 is an example, and is not limited to this. For example, in the longitudinal direction, the central region when the region from the lower end of the end joint region 24 of the ventral exterior body 21 to the lower end of the end joint region 24 of the dorsal exterior body 22 is reduced to 1/3 is used as the inseam portion. May be good.

Further, in the ventral exterior body 21 and the dorsal exterior body 22, the stretchable nonwoven fabrics 215 and 225 are arranged, and the regions that expand and contract in the lateral direction are referred to as "stretchable regions 216 and 226". In the diaper 1 of the present embodiment, of the dorsal exterior body 21 and the ventral exterior body 22, a region other than the upper end region where the filamentous elastic member 26 around the waist is arranged (the region shaded in FIG. 4) is provided. The expansion and contraction areas are 216 and 226. Therefore, lateral stretching force is also exhibited in the region of the ventral exterior body 21 and the dorsal exterior body 22 that overlaps the absorbent core 11 in the thickness direction. Hereinafter, the stretchable region 216 of the ventral exterior body 21 is referred to as a ventral stretchable region 216, and the stretchable region 226 of the dorsal exterior body 22 is referred to as a dorsal stretchable region 226.

[1. Buttocks 11C of absorbent core 11]
[1.1 First low basis weight area 31]
The absorbent core 11 has a "first low basis weight region 31" above the lower end 1c (see FIG. 1) in the vertical direction of the pants-type diaper 1 and on the rear side in the front-rear direction. The first low basis weight region 31 is located at the center of the absorbent core 11 in the horizontal direction, has a lower basis weight of the absorbent core 11 than the surroundings, and has a rectangular shape that is longer in the vertical direction than the horizontal direction of the diaper 1. Area of.

^{The basis weight of the absorbent core 11 is the mass (g / m 2} ) of the absorbent core 11 (for example, a liquid absorbent fiber mixed with SAP) per unit area. The comparison of the basis weight of the absorbent core 11 between the first low basis weight region 31 and the surroundings may be performed by a well-known method. For example, there is a method of visual comparison. In addition, there is a method in which a target site is cut out as a sample from the absorbent core 11, the mass of each sample and the area of each sample are measured, and the mass per unit area is calculated and compared. The same applies to the other low basis weight areas described below.

In the present embodiment, it is assumed that the absorbent core 11 does not exist in the first low basis weight region 31. That is, the first low basis weight region 31 is a hole through which the absorbent core 11 penetrates in the thickness direction. Further, the lower end 1c of the pants-type diaper 1 corresponds to the central position CL in the longitudinal direction in the expanded and extended diaper 1, and the first low basis weight region 31 is located on the dorsal exterior body 22 side of the central position CL. To position.

The absorbent core 11 is easily bent from the first low basis weight region 31 due to the difference in rigidity between the first low basis weight region 31 and the surroundings. That is, the first low basis weight region 31 is a folding guidance region that guides the absorbent core 11 so as to bend along the vertical direction. Therefore, the central portion of the buttock portion 11C of the absorbent core 11 in the horizontal direction is easily bent along the vertical direction, and the absorbent core 11 is likely to enter the crevice of the buttock portion of the wearer.

However, assuming that lateral stretching force is not exhibited in the dorsal exterior body 22 that overlaps the absorbent core 11 in the thickness direction, the absorbent core 11 is convex to the non-skin side in the first low basis weight region 31. There is a risk of bending and creating a gap between the absorbent core 11 and the wearer.

On the other hand, in the diaper 1 of the present embodiment, as shown in FIG. 4, the dorsal expansion / contraction region 226 and the first low basis weight region 31 are arranged so as to overlap each other in the thickness direction, and the dorsal expansion / contraction region is arranged. A part of 226 crosses the first low basis weight area 31.

Therefore, the buttocks portion 11C of the absorbent core 11 is in close contact with the wearer's buttocks by the dorsal stretchable region 226, and bends convexly toward the skin along the cracks in the wearer's buttocks in the first low basis weight region 31. Therefore, the absorbent core 11 more reliably fits into the crevice of the wearer's buttocks, and the fitted state is maintained even when the wearer moves. Therefore, the discomfort of wearing the diaper 1 is reduced, and the diaper 1 is comfortable to wear. In addition, it is possible to prevent leakage of excrement from the gap between the wearer and the absorbent core 11.

Further, the absorbent core 11 is brought into close contact with the crevice of the wearer's buttocks by using the stretchable nonwoven fabric 225 that expands and contracts laterally so that the dorsal exterior body 22 fits around the wearer's waist. Therefore, the configuration is simplified as compared with the case where another elastic member is superposed on the first low basis weight region 31. Further, when a member that expands and contracts in the vertical direction is used, since the absorbent core 11 excessively enters the crevice of the buttocks, it is preferable to use a member that expands and contracts in the lateral direction like the diaper 1 of the present embodiment.

Further, the first low basis weight region 31 is provided above the lower end 1c of the pants-type diaper 1. Therefore, it is possible to prevent the portion of the absorbent core 11 around the lower end 1c of the pants-type diaper 1 from bending convexly toward the skin and hitting the wearer's inseam, and the diaper 1 is comfortable to wear.

In addition, the excrement liquid easily moves along the first low basis weight region 31, and the excretion liquid can be diffused in the longitudinal direction of the absorbent core 11. Therefore, the absorption capacity of the absorbent core 11 is improved, and leakage can be prevented.

Further, as shown in FIG. 5, the absorbent core 11 has a "narrow portion 11D" in the central portion in the longitudinal direction, which is narrower in the lateral direction than the end portion in the longitudinal direction. In this case, it is preferable that at least a part (preferably all) of the first low basis weight region 31 is located on the rear end portion 11a side of the absorbent core 11 with respect to the narrow portion 11D in the longitudinal direction.

The narrow portion 11D of the absorbent core 11 is easily pinched by the wearer's thigh and is easily located at the wearer's inseam. Therefore, due to the above arrangement, the first low basis weight region 31 is likely to be located at the portion of the absorbent core 11 that abuts on the crevice of the wearer's buttocks. Therefore, the absorbent core 11 can be easily fitted to the crack in the buttocks of the wearer, and the portion of the absorbent core 11 that is bent convexly toward the skin can be prevented from hitting the inseam of the wearer.

[1.2 Second low basis weight area 32 and third low basis weight area 33]
The absorbent core 11 has a pair of "second low basis weight regions 32" having a lower basis weight of the absorbent core 11 than the surroundings on both sides of the first low basis weight region 31 in the lateral direction.
Further, the absorbent core 11 has a "third low basis weight region 33" in which the basis weight of the absorbent core 11 is lower than that of the surroundings on the end portion 11a side behind the first low basis weight region 31 in the longitudinal direction. ".

The second low basis weight region 32 and the third low basis weight area 33 have a substantially lattice shape, and the vertically long portions 321 and 331 that are longer in the vertical direction than the horizontal direction and the horizontally long portions that are longer in the horizontal direction than the vertical direction. It has a shape that intersects with the portions 322 and 332. Specifically, a plurality of vertically elongated portions 321 and 331 are arranged at intervals in the horizontal direction, and a plurality of horizontally elongated portions 322 and 332 arranged at intervals in the vertical direction intersect with each of the vertically elongated portions 321 and 331. ing.

The vertically elongated portions 321 and 331 induce the absorbent core 11 to bend along the vertical direction, and the horizontally elongated portions 322 and 332 induce the absorbent core 11 to bend along the lateral direction. Therefore, in the second low basis weight region 32 and the third low basis weight region 33, the fold guidance region (second fold guide region, first) in which the absorbent core 11 is guided to bend along the vertical direction and the horizontal direction. 3 fold guidance area). Therefore, the absorbent core 11 is easily deformed along the rounded portion other than the crack in the buttocks by the second low basis weight region 32 and the third low basis weight region 33.

Further, as shown in FIG. 4, a part of the dorsal expansion / contraction region 226 crosses the pair of the second low basis weight area 32 and the third low basis weight area 33. Therefore, the absorbent core 11 also adheres to a portion other than the crack in the buttocks. Therefore, the diaper 1 is comfortable to wear and the leakage of excrement can be prevented. In particular, the left and right buttocks move differently when walking, and the absorbent core 11 can follow the movement.

Further, the second low basis weight region 32 and the third low basis weight area 33 diffuse the excrement liquid in the longitudinal direction and the lateral direction of the absorbent core 11, and the absorption capacity of the absorbent core 11 is improved.

In addition, the slope of the other buttocks is gentler than the slope of the crack in the buttocks. Therefore, as shown in FIG. 7A and the like, it is assumed that the absorbent core 11 exists in the second low basis weight region 32 and the third low basis weight region 33, and the basis weight of the second low basis weight region 32 and the second low basis weight region 32. 3 The basis weight of the low basis weight area 33 may be higher than the basis weight of the first low basis weight area 31. That is, it is preferable that the absorbent core 11 is more easily bent in the first low basis weight region 31 as compared with the second low basis weight region 32 and the third low basis weight region 33.

By doing so, the first low basis weight region 31 allows the absorbent core 11 to firmly enter the crevice of the wearer's buttocks, and the second low basis weight area 32 and the third low basis weight area 33 allow the absorbent core 11 to enter. It can bend gently along the part other than the crevice in the buttocks. Further, the absorbable core 11 existing in the second low basis weight region 32 and the third low basis weight region 33 improves the absorption capacity of the absorbable core 11.

Further, in the buttocks of the wearer, the bending in the waist direction is steeper than the bending in the vertical direction. Therefore, as shown in FIG. 6, in the second low basis weight region 32, the vertical length L1 of the vertically long portion 321 is made longer than the horizontal length L2 of the horizontally long portion 322, and the third low basis weight is formed. In the region 33, the vertical length L3 of the vertically elongated portion 331 may be longer than the lateral length L4 of the horizontally elongated portion 332.

In this case, the absorbent core 11 tends to bend along the vertically elongated portions 321 and 331 at predetermined lateral intervals in the second low basis weight region 32 and the third low basis weight region 33. Therefore, the absorbent core 11 tends to bend along the waistline and fits better to the wearer's buttocks.

[1.3 First high basis weight area 41]
As shown in FIG. 6, the absorbent core 11 has a low basis weight over the entire width of the absorbent core 11 in the horizontal direction between the second low basis weight region 32 and the third low basis weight area 33 in the vertical direction. It has a "first high basis weight area 41" in which a quantity area does not exist.

The first high basis weight region 41 is a non-folding induction region in which the absorption core 11 has a higher basis weight than the second low basis weight area 32 and the third low basis weight area 33, and the absorbent core 11 is difficult to bend. be. The first high basis weight region 41 can firmly absorb the excrement liquid that has flowed to the rear side. Therefore, back leakage can be prevented.

However, in the first high basis weight region 41, the absorbent core 11 is more difficult to follow along the buttocks than in the second low basis weight area 32 and the third low basis weight region 33, and the dorsal expansion / contraction region 226 affects the lateral direction. Shrinks easily and vertical wrinkles are likely to occur. Therefore, as described above, it is preferable to arrange the first high basis weight area 41 between the second low basis weight area 32 and the third low basis weight area 33.

By doing so, for example, the first high basis weight region 41 is the second low basis weight area 32 and the third low basis, as compared with the case where the first high basis weight region 41 is located at the end portion 11a of the absorbent core 11. It follows the basis weight area 33 and easily follows the buttocks, and lateral contraction can be suppressed. Therefore, the occurrence of vertical wrinkles in the first high basis weight region 41 can be suppressed, and the deterioration of the wearing comfort of the diaper 1 can be prevented.

[1.4 Second high basis weight area 42]
As shown in FIG. 6, the first low basis weight area 31 and the second low basis weight area 32 are arranged at intervals in the lateral direction. Further, in the second low basis weight area 32 and the third low basis weight area 33, the horizontally long portions 322 and 332 are divided in the lateral direction. Therefore, the absorbent core 11 is provided between the first low basis weight region 31 and the second low basis weight region 32 in the lateral direction, between the plurality of vertically elongated portions 321 of the second low basis weight region 32 in the lateral direction, and A "second high basis weight area 42" is provided between a plurality of vertically elongated portions 331 of the third low basis weight area 33 in the lateral direction.

In the second high basis weight region 42, the basis weight of the absorbent core 11 is higher than that of the second low basis weight area 32 and the third low basis weight area 33, and the absorbent core 11 is hard to bend. Second non-folding induction region). Further, the second high basis weight region 42 is a rectangular region that is longer in the vertical direction than in the horizontal direction.

In this case, the second high basis weight region 42 serves as a support, and the absorbent core 11 tends to bend along the vertical direction at predetermined intervals in the horizontal direction. Therefore, the absorbent core 11 tends to bend along the waistline and fits better to the wearer's buttocks.

Further, since the excrement liquid can be firmly absorbed in the second high basis weight region 42, it is possible to prevent the excrement liquid from being excessively diffused in the lateral direction. Therefore, lateral leakage can be prevented.

[2. Lower abdomen part 11A of absorbable core 11]
[2.1 Fourth low basis weight area 34]
As shown in FIG. 4, the absorbent core 11 has a "fourth low basis weight region 34" above the lower end 1c in the vertical direction of the pants-type diaper 1 and on the front side in the front-rear direction. The fourth low basis weight region 34 is located at the center of the absorbent core 11 in the horizontal direction, has a lower basis weight of the absorbent core 11 than the surroundings, and has a rectangular shape that is longer in the vertical direction than the horizontal direction of the diaper 1. Area of.

That is, the fourth low basis weight region 34 is a fold guidance region (fourth fold guidance region) that guides the absorbent core 11 so as to bend along the vertical direction. Further, as shown in FIG. 4, a part of the ventral expansion / contraction region 216 crosses the fourth low basis weight region 34.

Therefore, the absorbent core 11 is attached to the wearer's lower abdomen (specifically, the male genitals and the female lower abdomen (the bulge of the inverted triangle surrounded by the bikini line)) in the fourth low basis weight region 34. It bends convexly along the non-skin side and adheres. Therefore, since the absorbent core 11 fits on the lower abdomen of the wearer, the diaper 1 is comfortable to wear and the leakage of excrement can be prevented.

[2.2 5th low basis weight area 35 and 7th low basis weight area 37]
As shown in FIG. 5, the absorbent core 11 has a pair of “fifth low basis weight regions 35” in which the basis weight of the absorbent core 11 is lower than the surroundings on both sides of the fourth low basis weight region 34 in the lateral direction. ".
Further, the absorbent core 11 has a "seventh low basis weight region 37" in which the basis weight of the absorbent core 11 is lower than that of the surroundings on the end portion 11b side on the front side of the fourth low basis weight region 34 in the longitudinal direction. Has.

The fifth low basis weight region 35 and the seventh low basis weight region 37 have a shape in which the vertically elongated portions 351 and 371 and the horizontally elongated portions 352 and 372 intersect, and the absorbent core 11 is formed in the vertical and horizontal directions. It is a folding guidance area that guides the user to bend along the line. Further, as shown in FIG. 4, a part of the ventral telescopic region 216 crosses the fifth low basis weight region 35 (fifth folding induction region) and the seventh low basis weight region 37.

Therefore, the absorbent core 11 is bent and adheres to the male genitals and the lower abdomen of the female by the fifth low basis weight region 35 and the seventh low basis weight region 37. Thus, the absorbent core 11 fits better in the wearer's lower abdomen.

Further, the absorbent core 11 does not exist in the above-mentioned fourth low basis weight region 34, and the absorption of the fourth low basis weight area 34 is compared with the fifth low basis weight area 35 and the seventh low basis weight area 37. It is advisable to lower the basis weight of the sex core 11. By doing so, the absorbent core 11 bends firmly in the fourth low basis weight region 34, so that the absorbent core 11 can be fitted particularly to the male genitals.

Further, similarly to the above-mentioned second low basis weight area 32, in the fifth low basis weight area 35 and the seventh low basis weight area 37, the vertical lengths of the vertically long portions 351 and 371 are the horizontally long portions 352. , 372 longer than the lateral length, and there is a vertically long high basis weight region between the vertically long portions 351 and 371. Therefore, the lower abdominal portion 11A of the absorbent core 11 bends in the vertical direction at predetermined intervals in the lateral direction, easily bends along the waist circumference, and fits better in the lower abdomen of the wearer.

Further, the vertically elongated portion 351 of the fifth low basis weight region 35 and the vertically elongated portion 371 of the seventh low basis weight region 371 are continuous. Therefore, in the lower abdominal portion 11A of the absorbent core 11, there is no region in which the low basis weight region does not exist over the entire lateral width of the absorbent core 11, that is, there is no region that blocks the excrement. However, there is no problem because the excrement liquid tends to leak to the rear side particularly at bedtime of the wearer, and conversely, in the lower abdomen portion 11A of the absorbent core 11, the entire area thereof easily fits to the lower abdomen of the wearer. ing.

[2.3 Third high basis weight area 43]
As shown in FIG. 5, the absorbent core 11 has a "third high basis weight area 43" between the fourth low basis weight area 34 and the fifth low basis weight area 35 in the lateral direction. In the third high basis weight region 43, the basis weight of the absorbent core 11 is higher than that of the fourth low basis weight area 34 and the fifth low basis weight area 35, and the absorbent core 11 is hard to bend. Third non-folding induction region). Further, the third high basis weight region 43 is a rectangular region that is longer in the vertical direction than in the horizontal direction.

Therefore, the third high basis weight region 43 serves as a support, the absorbent core 11 tends to bend convexly toward the non-skin side in the fourth low basis weight region 34, and the absorbent core 11 fits better in the lower abdomen of the wearer. Further, the lower abdominal portion 11A of the absorbent core 11 abuts on the urination position. Therefore, by arranging the third high basis weight region 43, the excrement liquid can be absorbed firmly, and the excretion liquid can be prevented from spreading excessively in the lateral direction. Therefore, lateral leakage can be prevented.

[3. Inseam portion 11A of the absorbent core 11]
[3.1 6th low basis weight area 36]
As shown in FIG. 5, the first low basis weight region 31 and the fourth low basis weight region 34 are arranged apart from each other in the longitudinal direction of the absorbent core 11. Therefore, the inseam portion 11A of the absorbent core 11 has a portion 11B1 (see FIG. 4) in which the first low basis weight region 31 and the fourth low basis weight region 34 are not arranged together.

Therefore, it is possible to prevent the inseam portion 11A of the absorbent core 11 from bending convexly toward the skin side and hitting the inseam of the wearer, and the diaper 1 is comfortable to wear. In addition, it is possible to prevent the inseam portion 11A of the absorbent core 11 from bending convexly toward the non-skin side and creating a gap between the absorbent core 11 and the wearer.

Further, the absorbent core 11 has a "sixth low basis weight region 36" in the inseam portion 11A, where the basis weight of the absorbent core 11 is lower than that of the surrounding area. The sixth low basis weight region 36 has a shape in which the vertically elongated portion 361 and the horizontally elongated portion 362 intersect, and the folding guiding region (sixth folding) in which the absorbent core 11 is guided to bend along the vertical and horizontal directions. Guidance area). Therefore, the absorbent core 11 is bent so as to wrap around the inseam of the wearer by the sixth low basis weight region 36.

Further, a stretchable nonwoven fabric 233 is arranged on the inseam exterior body 23 of the present embodiment (see FIG. 3), and the stretchable nonwoven fabric 233 and the sixth low basis weight region 36 are arranged so as to be overlapped in the thickness direction. To. Therefore, the absorbent core 11 is in close contact with the wearer's inseam and fits better, so that the diaper 1 is comfortable to wear.

Further, similarly to the second low basis weight area 32 described above, also in the sixth low basis weight area 36, the vertical length of the vertically long portion 361 is longer than the horizontal length of the horizontally long portion 362, and the vertically long portion 362 is also vertically long. There is a vertically long high basis weight area between the portions 361. Therefore, the inseam portion 11B of the absorbent core 11 bends along the vertical direction at predetermined lateral intervals and fits the inseam portion of the wearer which is convexly curved laterally to the non-skin side.

[4. Modification example]
The absorbent core 11 may have at least the first low basis weight region 31. The second low basis weight region 32 to the seventh low basis weight area 37 and the first high basis weight area 41 to the third high basis weight area 43 are not possessed even if the absorbent core 11 appropriately has them. You may.
Further, the first low basis weight region 31 and the fourth low basis weight area 34 are not limited to the through holes, and the basis weight is lower than that of the second low basis weight area 32, the third low basis weight area 33, and the like. The absorbent core 11 may be arranged in the 1 low basis weight area 31 and the 4th low basis weight area 34.

Further, in FIG. 7A and the like, the case where the absorbent core 11 is recessed from both sides in the thickness direction in the second low basis weight region 32 and the like is taken as an example. However, the present invention is not limited to this, and in the second low basis weight area 32, the third low basis weight area 33, the fifth low basis weight area 35, the sixth low basis weight area 36, and the seventh low basis weight area 37, the figure. As shown in 7A and the like, the absorbent core 11 may be recessed from both sides in the thickness direction, may be recessed only from the skin side in the thickness direction, or may be recessed only from the non-skin side in the thickness direction. You may.

=== Second embodiment ===
FIG. 8 is a diagram illustrating the diaper 1 of the second embodiment, and is a schematic plan view of the diaper 1 in the expanded and extended state. In the diaper 1 of the second embodiment, a plurality of thread-like elastic members 50 (for example, rubber thread) are vertically spaced between the ventral exterior body 21 and the dorsal exterior body 22 instead of the stretchable nonwoven fabrics 215 and 225. It is arranged in a vacant space. Other than that, the configuration is the same as that of the diaper 1 of the first embodiment.

Specifically, the filamentous elastic member 50 is fixed in a laterally extended state between the skin-side sheets 213 and 223 and the non-skin-side sheets 214 and 224 of the ventral exterior body 21 and the dorsal exterior body 22, respectively. There is. Also in this case, the ventral exterior body 21 and the dorsal exterior body 22 have elastic regions 216 and 226 (regions surrounded by thick lines in FIG. 8) that expand and contract in the lateral direction.

As shown in FIG. 8, the filamentous elastic member 50 crosses the first to fifth low basis weight regions 31 to 35 and the seventh low basis weight region 37 of the absorbent core 11. Further, it is assumed that the lateral elastic force of the filamentous elastic member 50 is also exhibited in the ventral exterior body 21 and the dorsal exterior body 22 that overlap the absorbent core 11 in the thickness direction. Therefore, the absorbent core 11 can enter the crevice of the wearer's buttocks, or can be bent and adhered along the wearer's buttocks and lower abdomen.

Further, in the diaper 1 shown in FIG. 8, the vertical spacing (for example, L5) of the filamentous elastic members 50 overlapping with the absorbent core 11 in the vertical direction and the substantially lattice-shaped low basis weight region (second, third). The vertical spacing (for example, L6) of the horizontally long portions (322,332,352,372) of the fifth and seventh low basis weight regions 32, 33, 35, 37) is about the same.

However, the vertical spacing of the filamentous elastic members 50 may be smaller than the vertical spacing of the horizontally long portions. By doing so, the absorbent core 11 that bends along the plurality of horizontally elongated portions and curves in the vertical direction can be brought into close contact with the filamentous elastic members 50 arranged at finer intervals. Therefore, the absorbent core 11 is more likely to follow the buttocks and lower abdomen.

=== Third Embodiment ===
In the diaper 1 of the first embodiment, the folding induction region is formed by lowering the basis weight of the absorbent core 11 with respect to the surroundings, but the present invention is not limited to this. For example, the folding induction region may be formed by forming a squeezed portion in which the absorbent core 11 is squeezed in the thickness direction. The same applies to the second fold guidance region to the sixth fold guidance region. In this case, the region where the compressed portion is not formed becomes the non-folding induction region. Further, it is preferable to squeeze the fold-inducing region more strongly in the fold-inducing region so that the absorbent core 11 is more easily bent than in the second fold-inducing region and the third fold-inducing region.

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 intended to limit the interpretation of the present invention. Further, the present invention can be changed or improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof.

1 Pants-type disposable diaper (pants-type absorbent article), 10 Absorbent body,
11 Absorbent core, 11A lower abdomen, 11B inseam,
11C buttock area, 11D narrow area,
12 top seats, 13 back seats, 14 three-dimensional gathers,
20 exterior body,
21 ventral exterior body (belt part), 216 telescopic area,
22 Dorsal exterior (belt part), 226 Telescopic area,
23 Inseam exterior, 24 End joint area,
25a, 25b welded part, 26 thread-like elastic member,
31 First low basis weight area (folding guidance area),
32 Second low basis weight area (second folding guidance area), 321 Vertical section, 322 Horizontal section,
33 3rd low basis weight area (3rd folding guidance area), 331 vertical section, 332 horizontal section,
34 4th low basis weight area (4th folding guidance area),
35 5th low basis weight area (5th folding guidance area), 351 vertical section, 352 horizontal section,
36 6th low basis weight area (6th folding guidance area), 361 vertical section, 362 horizontal section,
37 7th low basis weight area, 371 portrait section, 372 landscape section,
41 First high basis weight area 41 (non-folding induction area),
42 Second high basis weight area (second non-folding induction area),
43 Third high basis weight area (third non-folding induction area),
50 Filamentous elastic member,

Claims (11)

A pants-type absorbent article having a vertical direction, a horizontal direction, and a front-back direction.
An absorbent body that has an absorbent core and is folded in half in the longitudinal direction so that the longitudinal direction is along the longitudinal direction.
It has a pair of belt portions, each of which has an expansion / contraction region that expands and contracts in the lateral direction.
The absorbent core has a fold-inducing region at the center of the lateral direction that guides the absorbent core to bend along the longitudinal direction.
The folding guidance region is arranged above the lower end in the vertical direction of the pants-type absorbent article and on the rear side in the front-rear direction.
At least a part of the expansion / contraction region of the belt portion on the rear side crosses the folding guidance region.
The absorbent core has a pair of second fold-inducing regions that guide the absorbent core to bend along the longitudinal and lateral directions on both sides of the lateral direction of the fold-inducing region.
At least a part of the stretchable region of the belt portion on the rear side crosses the pair of the second folding guide regions.
A pants-type absorbent article characterized in that the absorbent core is more easily bent in the fold-induction region as compared with the second fold-induction region. The pants-type absorbent article according to claim 1.
A pants-type absorbent article characterized in that, in the folding induction region, the basis weight of the absorbent core is lower than that of the surrounding area. The pants-type absorbent article according to claim 1 or 2.
The absorbent core is a third fold-inducing region that guides the absorbent core to bend along the longitudinal and lateral directions at the posterior end side of the fold-inducing region in the longitudinal direction. Have,
At least a part of the expansion / contraction region of the belt portion on the rear side crosses the third folding guidance region.
A pants-type absorbent article characterized in that the absorbent core is more easily bent in the fold-induction region as compared with the third fold-induction region. The pants-type absorbent article according to claim 3.
The absorptive core spans the entire width of the absorptive core in the lateral direction between the second fold-inducing region and the third fold-inducing region in the longitudinal direction, and the second fold-inducing region and the first. A pants-type absorbent article characterized in that the absorbent core has a non-folding induction region that is hard to bend as compared with the tri-folding induction region. The pants-type absorbent article according to claim 3 or 4.
The second fold guidance region and the third fold guidance region have a shape in which a vertically long portion that is longer in the vertical direction than the horizontal direction and a horizontally long portion that is longer in the horizontal direction than the vertical direction intersect. Made,
In the second folding guidance region, the length of the vertically elongated portion in the vertical direction is longer than the length of the horizontally elongated portion in the lateral direction.
A pants-type absorbent article characterized in that, in the third folding guide region, the length of the vertically elongated portion in the vertical direction is longer than the length of the horizontally elongated portion in the lateral direction. The pants-type absorbent article according to claim 5.
In the second fold guidance region and the third fold guidance region, a plurality of the vertically elongated portions are arranged in the horizontal direction.
The absorbent core has the second fold-inducing region and the third in the lateral direction between the fold-inducing region and the second fold-inducing region, and between a plurality of the longitudinal portions in the lateral direction. A pants-type absorbent article characterized in that the absorbent core is less likely to bend than a fold-inducing region and has a second non-folding-inducing region that is longer in the vertical direction than in the horizontal direction. The pants-type absorbent article according to any one of claims 1 to 6.
The absorbent core has a fourth fold-inducing region at the center of the lateral direction that guides the absorbent core to bend along the longitudinal direction.
The fourth fold guide region is arranged above the lower end in the vertical direction of the pants-type absorbent article and on the front side in the front-rear direction.
A pants-type absorbent article characterized in that at least a part of the stretchable region of the belt portion on the front side crosses the fourth folding guide region. A pants-type absorbent article having a vertical direction, a horizontal direction, and a front-back direction.
An absorbent body that has an absorbent core and is folded in half in the longitudinal direction so that the longitudinal direction is along the longitudinal direction.
It has a pair of belt portions, each of which has an expansion / contraction region that expands and contracts in the lateral direction.
The absorbent core has a fold-inducing region at the center of the lateral direction that guides the absorbent core to bend along the longitudinal direction.
The folding guidance region is arranged above the lower end in the vertical direction of the pants-type absorbent article and on the rear side in the front-rear direction.
At least a part of the expansion / contraction region of the belt portion on the rear side crosses the folding guidance region.
The absorbent core has a fourth fold-inducing region at the center of the lateral direction that guides the absorbent core to bend along the longitudinal direction.
The fourth fold guide region is arranged above the lower end in the vertical direction of the pants-type absorbent article and on the front side in the front-rear direction.
At least a part of the expansion / contraction region of the belt portion on the front side crosses the fourth folding guidance region.
The absorbent core is
On both sides of the fourth fold guiding region, the absorbent core has a pair of fifth fold guiding regions that guide the absorbent core to bend along the longitudinal and lateral directions.
The absorbent core is less likely to bend between the fourth fold guide region and the fifth fold guide region in the lateral direction than the fourth fold guide region and the fifth fold guide region, and the lateral side. A pants-type absorbent article characterized by having a third non-folding induction region that is longer in the vertical direction than in the direction. The pants-type absorbent article according to claim 7 or 8.
It has an end joining region where the belt portion on the front side and the belt portion on the dorsal side are joined.
It said absorbent core has a crotch region,
The inseam portion is formed by reducing the area from the lower end of the end joint region of the belt portion on the front side to the lower end of the end joint region of the belt portion on the rear side to 1/3 in the longitudinal direction. Is the central area of
The pants-type absorbent article, characterized in that the inseam portion has a portion in which the fold-inducing region and the fourth fold-inducing region are not arranged together. The pants-type absorbent article according to claim 9.
The absorbent core is a pants-type absorbent article characterized in that, at the inseam portion, the absorbent core has a sixth folding guide region that guides the absorbent core to bend along the longitudinal direction and the lateral direction. The pants-type absorbent article according to any one of claims 1 to 10.
The absorbent core has a narrow portion in the central portion in the longitudinal direction that is narrower in the lateral direction than the end portion in the longitudinal direction.
A pants-type absorbent article characterized in that at least a part of the folding guidance region is located on the rear end side of the absorbent core with respect to the narrow portion in the longitudinal direction.

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