JP2022074874A - Absorbent article - Google Patents

Abstract

To provide an absorbent article capable of suppressing slipping of the absorbent article.SOLUTION: A front girth area (S1) and a rear girth area (S2) of an absorbent article (1) are disposed with a plurality of areas into which the front girth area and the rear girth area are divided in a longitudinal direction (L). The plurality of areas includes: a front waist area (F11); an upper abdomen area (F12); a lower abdomen area (F13) positioned at 50-85% behind a front edge of the front girth area with respect to a total longitudinal length of the front girth area; a front leg area (F14); a rear waist area (R11) positioned at 0-25% in front of a rear edge of the rear girth area with respect to the total longitudinal length of the rear girth area; an upper back area (R12); a lower back area (R13); and a rear leg area (R14). A tensile stress in a width direction of the lower abdomen area is larger than a tensile stress of any area of the front girth area. A tensile stress in the width direction of the rear waist area is larger than a tensile stress of any area of the rear girth area.SELECTED DRAWING: Figure 2

Description

The present invention relates to absorbent articles such as disposable diapers.

An absorbent article such as a disposable diaper is worn so as to cover the abdomen and back of the body and is configured to suppress slippage (for example, Patent Document 1 below). The absorbent article of Patent Document 1 is configured so that the absorbent article does not easily shift with respect to the movement of the wearer's body. More specifically, the rear waist circumference region is provided with a first expansion / contraction portion and a second expansion / contraction portion located on the inseam side of the first expansion / contraction portion. The first expansion / contraction portion and the second expansion / contraction portion are arranged at intervals in the longitudinal direction. The stretching stress of the first stretching portion and the stretching stress of the second stretching portion are larger than the stretching stress of the region between the first stretching portion and the second stretching portion. Therefore, when the absorbent article is worn, the first stretchable portion and the second stretchable portion are in close contact with the body, and the region between the first stretchable portion and the second stretchable portion is relatively in close contact with the body.

For example, when the wearer moves by bending and stretching the leg, the second elastic portion located on the inseam region side in the rear waist circumference region is pulled toward the inseam side. Further, as the second telescopic portion moves to the inseam side, the region between the first telescopic portion and the second telescopic portion is also pulled toward the inseam side. The region between the first stretchable portion and the second stretchable portion has a relatively small stretchable stress and is not in close contact with the body. Therefore, when a force that is pulled in the longitudinal direction is applied to the posterior waist circumference area of the disposable diaper due to the movement of the wearer's body, the area between the first expansion / contraction portion and the second expansion / contraction portion becomes a cushioning region, and the movement of the body. It is possible to absorb the change in the expansion and contraction of the skin due to. Therefore, it is possible to prevent the first telescopic portion from shifting toward the inseam side. Further, the first expansion / contraction portion and the third expansion / contraction portion are continuous, and the second expansion / contraction portion and the third expansion / contraction portion are continuous. That is, the stretchable portion in the front waist circumference area and the stretchable portion in the rear waist circumference region are arranged so as to cover the wearer's waist circumference. Therefore, when the second telescopic portion shifts to the inseam side, it can be pulled up to the original position by the third telescopic portion. In this way, the absorbent article of Patent Document 1 is configured to suppress displacement.

JP-A-2015-202246

There is a great need to prevent slippage of absorbent articles, and there is still room for improvement. In particular, if the absorbent article does not fit the wearer's body shape, there is a possibility that the absorbent article may be displaced at the portion where the absorbent article does not match, and the entire absorbent article may be displaced when worn. Therefore, it is an object of the present invention to provide an absorbent article capable of further suppressing the slippage of the absorbent article.

The absorbent article according to one embodiment includes an inseam region arranged between the longitudinal direction and the width direction orthogonal to each other, a front waist circumference region, a rear waist circumference region, and the front waist circumference region and the rear waist circumference region, and at least an inseam. It has an absorption core arranged in the region. The front girth area and the rear girth area are provided with a plurality of regions obtained by dividing the front girth area and the rear girth area in the longitudinal direction. The plurality of regions are a front waist region located 0 to 25% behind the total length of the front waist region in the longitudinal direction from the front end edge of the front waist region, and the front waist region from the front end edge of the front waist region. An upper abdominal region located 25 to 50% posterior to the longitudinal length of the anterior girth region and a lower abdominal region located 50 to 85% posterior to the longitudinal length of the anterior girth region from the front edge of the anterior girth region. , The front leg region located 85 to 100% behind the total length of the front waist region in the longitudinal direction from the front end edge of the front waist region, and the longitudinal direction of the rear waist region from the rear end edge of the rear waist region. A posterior waist region located 0 to 25% anterior to the total length, an upper dorsal region located 25 to 50% anterior to the longitudinal length of the posterior girth region from the posterior edge of the posterior girth region, and the posterior region. The lower dorsal region located 50 to 85% forward of the longitudinal length of the posterior girth region from the posterior edge of the girth region, and the longitudinal length of the posterior girth region from the posterior end edge of the posterior girth region. It has a hind leg region located 85-100% anterior to. The tensile stress in the width direction of the lower abdominal region is larger than the tensile stress of any region of the anterior girth region. The tensile stress in the width direction of the rear waist region is larger than the tensile stress of any region of the rear waist region.

The absorbent article according to the other aspect includes the longitudinal direction and the width direction orthogonal to each other, the inseam area arranged between the front waist area, the rear waist area, the front waist area and the rear waist area, and at least the inseam. It has an absorption core arranged in the region. The front girth area and the rear girth area are provided with a plurality of regions obtained by dividing the front girth area and the rear girth area in the longitudinal direction. The plurality of regions are a front waist region located 0 to 25% behind the total length of the front waist region in the longitudinal direction from the front end edge of the front waist region, and the front waist region from the front end edge of the front waist region. An upper abdominal region located 25 to 50% posterior to the longitudinal length of the anterior girth region and a lower abdominal region located 50 to 85% posterior to the longitudinal length of the anterior girth region from the front edge of the anterior girth region. The front leg region located 85 to 100% behind the total length of the front girth region in the longitudinal direction from the front end edge of the front girth region, and the longitudinal direction of the rear girth region from the rear end edge of the rear girth region. A posterior waist region located 0 to 25% anterior to the total length, an upper dorsal region located 25 to 50% anterior to the longitudinal length of the posterior girth region from the posterior edge of the posterior girth region, and the posterior region. The lower dorsal region located 50 to 85% forward of the longitudinal length of the posterior girth region from the posterior edge of the girth region, and the longitudinal length of the posterior girth region from the posterior end edge of the posterior girth region. It has a hind leg region located 85-100% anterior to. The widthwise tensile stress of the posterior waist region is greater than the tensile stress of any other region.

FIG. 1 is a schematic front view of an absorbent article according to the present embodiment. FIG. 2 is a schematic plan view of the unfolded state of the absorbent article according to the present embodiment. FIG. 3 is a schematic cross-sectional view taken along the line of F3-F3 shown in FIG. FIG. 4 is a diagram schematically showing a state in which the absorbent article is attached to the wearer.

(1) Outline of Embodiment At least the following matters will be clarified by the description of this specification and the attached drawings.
The absorbent article according to one embodiment includes an inseam region arranged between the longitudinal direction and the width direction orthogonal to each other, a front waist circumference region, a rear waist circumference region, and the front waist circumference region and the rear waist circumference region, and at least an inseam. It has an absorption core arranged in the region. The front girth area and the rear girth area are provided with a plurality of regions obtained by dividing the front girth area and the rear girth area in the longitudinal direction. The plurality of regions are a front waist region located 0 to 25% behind the total length of the front waist region in the longitudinal direction from the front end edge of the front waist region, and the front waist region from the front end edge of the front waist region. An upper abdominal region located 25 to 50% posterior to the longitudinal length of the anterior girth region and a lower abdominal region located 50 to 85% posterior to the longitudinal length of the anterior girth region from the front edge of the anterior girth region. The front leg region located 85 to 100% behind the total length of the front girth region in the longitudinal direction from the front end edge of the front girth region, and the longitudinal direction of the rear girth region from the rear end edge of the rear girth region. A posterior waist region located 0 to 25% anterior to the total length, an upper dorsal region located 25 to 50% anterior to the longitudinal length of the posterior girth region from the posterior edge of the posterior girth region, and the posterior region. The lower dorsal region located 50 to 85% forward of the longitudinal length of the posterior girth region from the posterior edge of the girth region, and the longitudinal length of the posterior girth region from the posterior end edge of the posterior girth region. It has a hind leg region located 85-100% anterior to. The tensile stress in the width direction of the lower abdominal region is larger than the tensile stress of any region of the anterior girth region. The tensile stress in the width direction of the rear waist region is larger than the tensile stress of any region of the rear waist region. According to this aspect, the tensile stress of the lower abdominal region that abuts on the part having the shortest waist circumference in the abdomen is the largest, and the tensile stress of the posterior waist region that abuts on the part of the back that has the shortest waist circumference is the largest. The part with the highest stress hits the part with the shortest dimensions. By applying the greatest stress to the most concave part of the body, it is possible to prevent the absorbent article from shifting in the longitudinal direction due to the contraction of the absorbent article. That is, by arranging a region having a large stress in the recess of the body, the shape of the body matches the degree of stress of the absorbent article, and the displacement of the absorbent article can be suppressed. In addition, since the rear waist region, which has a relatively large stress, fits in the vicinity of the dorsal waist where the body has a flat shape, it is unlikely that a deviation in the longitudinal direction occurs during fitting, and it is easy to maintain a suitable position.

The absorbent article according to the other aspect includes the longitudinal direction and the width direction orthogonal to each other, the inseam area arranged between the front waist area, the rear waist area, the front waist area and the rear waist area, and at least the inseam. It has an absorption core arranged in the region. The front girth area and the rear girth area are provided with a plurality of regions obtained by dividing the front girth area and the rear girth area in the longitudinal direction. The plurality of regions are a front waist region located 0 to 25% behind the total length of the front waist region in the longitudinal direction from the front end edge of the front waist region, and the front waist region from the front end edge of the front waist region. An upper abdominal region located 25 to 50% posterior to the longitudinal length of the anterior girth region and a lower abdominal region located 50 to 85% posterior to the longitudinal length of the anterior girth region from the front edge of the anterior girth region. The front leg region located 85 to 100% behind the total length of the front girth region in the longitudinal direction from the front end edge of the front girth region, and the longitudinal direction of the rear girth region from the rear end edge of the rear girth region. A posterior waist region located 0 to 25% anterior to the total length, an upper dorsal region located 25 to 50% anterior to the longitudinal length of the posterior girth region from the posterior edge of the posterior girth region, and the posterior region. The lower dorsal region located 50 to 85% forward of the longitudinal length of the posterior girth region from the posterior edge of the girth region, and the longitudinal length of the posterior girth region from the posterior end edge of the posterior girth region. It has a hind leg region located 85-100% anterior to. The widthwise tensile stress of the posterior waist region is greater than the tensile stress of any other region. The posterior waist region has the largest tensile stress in contact with the part of the back that has the shortest waist circumference, and the part with the shortest waist circumference of the body is hit by the part with the highest stress. By applying the greatest stress to the most concave part of the body, it is possible to prevent the absorbent article from shifting in the longitudinal direction due to the contraction of the absorbent article. Further, since the tensile stress in the width direction of the rear waist region is larger than the tensile stress in any other region, the displacement can be suppressed by increasing the pressure applied to the back while suppressing the pressure applied to the abdomen. The feeling of pressure on the wearer's abdomen can be suppressed, and the feeling of wearing can be improved.

According to a preferred embodiment, the widthwise tensile stress of the posterior waist region is greater than the widthwise tensile stress of the lower abdominal region. The tensile stress in the lower abdominal region is the largest in the anterior girth region, the tensile stress in the posterior waist region is the largest in the posterior girth region, and the lower abdominal region and the posterior waist region are pulled to each other in the mounted state. At this time, since the tensile stress in the posterior waist region is larger than the tensile stress in the lower abdominal region, an obliquely upward force acts from the center of the abdomen toward the side of the body. Therefore, even if a force on the inseam region acts during absorption of body fluid such as urine, the withdrawal of the absorbent article can be suppressed.

According to a preferred embodiment, the tensile stress in the width direction of the upper back region is larger than the tensile stress in the width direction of the lower back region. According to this aspect, the tensile stress in the back waist region gradually increases in the order of the lower back region, the upper back region, and the back waist region. The waist circumference on the dorsal side gradually shortens from the bulge of the buttocks toward the upper side. By increasing the stress of the absorbent article as the waist circumference of the body becomes smaller, the absorbent article can be aligned with the wearer's body shape and the displacement of the absorbent article in the longitudinal direction can be suppressed.

According to a preferred embodiment, the tensile stress in the width direction of the lower back region is larger than the tensile stress in the width direction of the hind leg region. According to this aspect, the tensile stress in the back waist region gradually increases in the order of the hind leg region, the lower back region, the upper back region, and the back waist region. The waist circumference on the dorsal side becomes shorter from the bulge of the buttocks toward the inseam side. Therefore, the waist circumference of the portion where the hind leg region is arranged is shorter than the waist circumference of the portion where the lower back region is arranged. However, the hind leg region is a region in which the base of the foot is arranged and is easy to move following the movement of the foot. By making the tensile stress in the hind leg region relatively small, it is possible to improve the wearing feeling without hindering the movement of the base of the foot.

According to a preferred embodiment, the widthwise tensile stress of the anterior waist region is smaller than the widthwise tensile stress of the upper abdominal region. According to this aspect, the tensile stress in the anterior waist circumference region gradually decreases in the order of the lower abdominal region, the upper abdominal region, and the anterior waist region. By reducing the stress of the absorbent article as the waist circumference of the body increases, the absorbent article can be aligned with the wearer's body shape and the displacement of the absorbent article in the longitudinal direction can be suppressed.

According to a preferred embodiment, the total value of the widthwise tensile stress of the anterior waist region and the widthwise tensile stress of the posterior waist region is the widthwise tensile stress of the lower abdominal region and the lower back region. It is larger than the total value of the tensile stress in the width direction. In the wearing state, the front waist circumference area and the rear waist circumference area are continuous, and both cover the wearer's waist circumference in cooperation with each other. The size of the circumference of the waist of the wearer tends to be shorter in the vicinity of the waist opening than in the vicinity of the lower abdomen. According to this aspect, by increasing the total value of the tensile stress in the vicinity of the waist opening, it is possible to design the stress according to the perimeter of the front and back of the body, and it is possible to suppress the displacement of the absorbent article.

According to a preferred embodiment, the sum of the widthwise tensile stress of the anterior waist region and the widthwise tensile stress of the posterior waist region, and the widthwise tensile stress of the lower abdominal region and the lower dorsal region. The total value of the tensile stress in the width direction is larger than the total value of the tensile stress in the width direction in the upper abdominal region and the tensile stress in the width direction in the upper back region. The circumference of the waist is the shortest in the vicinity of the waist opening, and becomes longer from the waist opening toward the inseam side. The reason for the lengthening is due to the bulge of the abdomen and the inclination from the apex of the buttocks. The bulge of the abdomen and the inclination from the apex of the buttocks mainly correspond to the upper abdominal region and the upper back region. Since the total value of the tensile stress in the upper abdominal region and the upper back region is smaller than the total value of the tensile stress in the anterior waist region and the tensile stress in the posterior waist region, it is absorbed along the body without tightening the bulge of the body. Sexual articles are placed. In addition, the circumference of the waist is shortened by the dent of the lower abdomen toward the inseam side rather than the bulge of the abdomen and the inclination from the apex of the buttocks. The total value of the tensile stress in the lower abdomen region and the tensile stress in the lower back region is larger than the total value of the tensile stress in the upper abdomen region and the upper back region, and fits the dent in the lower abdomen. The region from the vicinity of the waist opening to the lower end of the abdomen is arranged according to the circumference of the body, and it is possible to suppress the deterioration of the wearing feeling due to local tightening and to suppress the displacement of the entire absorbent article.

According to a preferred embodiment, the total value of the widthwise tensile stress of the rear waist region and the widthwise tensile stress of the upper back region is the widthwise tensile stress of the lower abdominal region and the widthwise tensile stress of the front leg region. It is larger than the total tensile stress in the width direction. According to this aspect, it is possible to strongly tighten the recessed areas in the abdomen and the back and suppress the slippage. In addition, by tightening the dorsal side more strongly than the ventral side, the pulling force is increased toward the upper side of the dorsal side, and a force opposite to the direction in which the ventral side is displaced downward can be applied. Therefore, it is possible to prevent the absorbent article 1 from slipping down.

According to a preferred embodiment, the total value of the tensile stress in the width direction of the four regions of the rear waist circumference region is larger than the total value of the tensile stress in the width direction of the four regions of the front waist circumference region. The wearer's body shape differs between the ventral and dorsal sides, with the ventral side bulging more than the dorsal side. According to this aspect, the total value of the tensile stresses in the plurality of regions of the anterior girth region is relatively small, the body is not over-tightened to the ventral side where there is a lot of bulge, and the tensile stress in the multiple regions of the rear girth region is not overtightened. The absorbent article fits on the back side where the total value is relatively large and the bulge of the body is small, and it is possible to improve the wearing feeling and suppress the displacement at the same time.

According to a preferred embodiment, the absorption core has a low basis weight portion in which the basis weight of the absorption material is smaller than that of the surroundings. The low basis weight portion is arranged in a region overlapping the lower abdominal region. According to this aspect, the absorption core is easily deformed by the low basis weight portion, the lower abdominal region fits the body better, and the deviation of the anterior waist circumference region can be further suppressed.

(2) Overall Outline of Absorbable Articles The absorbent articles according to the embodiment will be described below with reference to the drawings. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals. However, it should be noted that the drawings are schematic and the ratio of each dimension is different from the actual one. Therefore, the specific dimensions, etc. should be determined in consideration of the following explanation. In addition, there may be a portion where the relationship and ratio of the dimensions of the drawings are different from each other. FIG. 1 is a schematic front view of an absorbent article according to the present embodiment. FIG. 2 is a schematic plan view of the unfolded state of the absorbent article according to the present embodiment. FIG. 2 shows an extended state in which the absorbent article 1 is extended to a state in which wrinkles are not formed in a state where the side joint portion to be described later is released from the joint. FIG. 3 is a schematic cross-sectional view of the absorbent article along line F3-F3 in FIG. For convenience of explanation, some members are not shown. Further, for convenience of explanation, even if the members are separated in the thickness direction, they may be in contact with each other in the thickness direction in an actual product.

The absorbent article 1 is, for example, a pants-type disposable diaper, a tape-type disposable diaper, a shorts-type sanitary napkin, or the like. The absorbent article 1 of the embodiment is a pants-type disposable diaper. As shown in FIG. 1, the absorbent article 1 has a longitudinal direction L and a width direction W orthogonal to the longitudinal direction L. The longitudinal direction L is a direction extending to the front side of the body and the back side of the body. The absorbent article 1 has orthogonal thickness directions T in both the longitudinal direction L and the width direction W. The thickness direction T extends to the skin surface side T1 facing the wearer side and the non-skin surface side T2 opposite to the skin surface side.

The absorbent article 1 is arranged in the front waist area S1 arranged on the ventral side of the wearer, the rear waist area S2 arranged on the back side of the wearer, and the inseam of the wearer, and the front waist area S1 and the rear. It has an inseam region S3 arranged between the waist circumference regions. As shown in FIG. 1, the absorbent article 1 may have a side joint portion 16 for joining the outer portion of the front waist circumference region S1 and the outer portion of the rear waist circumference region S2. As shown in FIG. 1, with the side joints 16 formed, the absorbent article 1 has a pair of waist openings 17 through which the wearer's torso is passed and a pair of legs into which the wearer's legs are inserted. The leg circumference opening 18 is formed. The waist opening 17 may be defined by the front end edge S1F of the front waist circumference region S1 and the rear end edge S2R of the rear waist circumference region S2.

In the pants-type absorbent article 1, the inseam region S3 may be defined by the inner edge of the side joint 16 in the longitudinal direction L. The boundary between the front waist circumference region S1 and the inseam region S3 may be defined by the rear end edge 16R of the side joint portion 16 in the front waist circumference region S1. The boundary between the rear waist circumference region S2 and the inseam region S3 may be defined by the front end edge 16F of the side joint portion 16 in the rear waist circumference region S2. The inseam region S3 may be defined by the region provided with the leg circumference opening 18. The leg circumference opening 18 is a portion recessed inward in the width direction W from the outer edge of the absorbent article 1. The boundary between the front waist area S1 and the inseam area S3 may be defined by the front end edge of the leg circumference opening 18. The boundary between the rear waist area S2 and the inseam area S3 may be defined by the rear end edge of the leg circumference opening 18.

The outer portion in the present specification is a portion that occupies a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is an outer edge in the width direction W. The inner portion in the present specification is a portion that occupies a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is an inner edge in the width direction W. Further, the front end portion and the rear end portion in the present specification are portions that occupy a certain range in the longitudinal direction L including the edge in the longitudinal direction L, and the front end edge and the rear end edge are edges in the longitudinal direction L. The outer end includes a front end and a rear end, and the outer edge includes a front end edge and a rear end edge.

The absorbent article 1 may have an absorbent body 20 and an exterior body 50. The absorbent body 20 may be configured as a separate body from the exterior body 50. The absorbent body 20 is arranged at least in the inseam region S3. The absorbent body 20 may extend from the inseam area S3 to at least the front waist area S1 in the longitudinal direction L, or may extend over the front waist area S1, the rear waist area S2, and the inseam area S3. As shown in FIG. 3, the absorbent main body 20 overlaps the exterior body 50 in the thickness direction T in the front waist circumference region S1 and the rear waist circumference region S2. The exterior body 50 is arranged at least in the front waist circumference region S1 and the rear waist circumference region S2. The absorbent main body 20 may have an absorbent body 30, a front surface sheet 41, a back surface sheet 42, and a side sheet 47. The absorber 30 has at least an absorption core 31 containing an absorbent material. The absorbent material may include, for example, ground pulp or a highly absorbent polymer (SAP), or a mixture thereof. The absorption core 31 is arranged at least in the inseam region S3, and may extend from the front waist circumference region S1 to the rear waist circumference region S2. The absorber 30 may have a core wrap 32 that covers the absorption core 31. The core wrap 32 may be made of, for example, a tissue or a non-woven fabric.

The absorber 30 may have a low basis weight portion LR in which the basis weight of the absorbent material is lower than that of the surroundings. In the present embodiment, the absorption core 31 is not arranged and the core wrap 32 is arranged in the low basis weight portion LR in the thickness direction T. Therefore, in the present embodiment, the basis weight of the absorbent material of the low basis weight portion LR is 0. The basis weight of the absorption material may be 0 as long as it is substantially 0, and the absorption core 31 may not be substantially present in the low basis weight portion LR. The low basis weight portion LR may be present due to the inflow of a part of the surrounding absorption material, or the absorption material having a lower basis weight than the surrounding absorption core 31 may be arranged.

The surface sheet 41 is located on the skin surface side T1 of the absorber 30. At least a portion of the surface sheet 41 (eg, the portion not covered by the side sheet 47) is located closest to the skin surface side T1 of the absorbent article and abuts on the wearer's skin. The surface sheet 41 may have liquid permeability, and may be made of, for example, a non-woven fabric. The back sheet 42 is located on the non-skin surface side T2 of the absorber 30. The back sheet 42 may have liquid impermeable properties, and may be made of, for example, a film. The side sheet 47 is arranged outside the width direction W of the absorption core 31 with respect to the center of the width direction W. The side sheet 47 may be arranged on the skin surface side T1 of the surface sheet. The side sheet 47 may be made of, for example, a non-woven fabric.

The exterior body 50 may be arranged on the non-skin surface side T2 of the absorbent body 20. The exterior body 50 may be composed of a plurality of seat members. The plurality of sheet materials may be composed of, for example, a non-woven fabric. The exterior body of the front waist circumference region S1 and the exterior body of the rear waist circumference region S2 may be separated from each other in the longitudinal direction L. The exterior body 50 may have a waist elastic member 55 arranged in a state of being extended in the width direction W in the front waist circumference region S1 and the rear waist circumference region S2. The waist elastic member 55 may be composed of a thread-shaped or string-shaped elastic member extending in the width direction W, or may be composed of a sheet-shaped elastic member.

The absorbent article 1 of the present embodiment is configured so as to suppress the slippage of the absorbent article 1. Next, a configuration for suppressing the slippage of the absorbent article 1 will be described in detail. The front waist circumference area S1 and the rear waist circumference region S2 are provided with a plurality of regions obtained by dividing the front waist circumference region S1 and the rear waist circumference region S2 in the longitudinal direction L. Each region is designed to have an appropriate tensile stress. Each region is deformed in a different manner due to the difference in tensile stress, and the absorbent article 1 is configured to be difficult to slip down. The plurality of regions are the front waist region F11 located 0 to 25% behind the total length of the front waist region S1 in the longitudinal direction L from the front end edge S1F of the front waist region S1, and the front waist region S1F to the front waist circumference of the front waist region S1. The upper abdominal region F12 located 25 to 50% behind the total length of the longitudinal region L of the region S1 and 50 to 85% posterior to the total length of the longitudinal region L of the anterior girth region S1 from the front edge S1F of the anterior girth region S1. The lower abdominal region F13, the front leg region F14 located 85 to 100% behind the total length of the front waist region S1 in the longitudinal direction L from the front edge S1F of the front waist region S1, and the rear end edge S2R of the rear waist region S2. The rear waist region R11 located 0 to 25% forward of the total length of the longitudinal region L of the waist circumference region S2, and 25 to 50% forward of the total length of the longitudinal direction L of the rear waist circumference region S2 from the rear end edge S2R of the rear waist circumference region S2. The upper dorsal region R12 located in, the lower dorsal region R13 located 50 to 85% forward of the total length of the rear waist circumference region S2 in the longitudinal direction L from the rear end edge of the rear waist circumference region S2, and the rear end of the rear waist circumference region S2. It has a hind leg region R14 located 85 to 100% anterior to the total length of the longitudinal region L of the hind girth region S2 from the edge.

Each region is a region of the exterior body 50. The regulation of each region and the measurement of tensile stress can be obtained by the following methods. The absorbent article 1 having the side joint portion 16 tears the side joint portion 16 to separate the front waist circumference region S1 and the rear waist circumference region S2. Next, the absorbent body 20 is separated from the exterior body 50. After leaving the exterior body 50 in an environment of temperature 23 ° C. ± 2 ° C. and humidity 50% ± 5% for 2 hours, the exterior body 50 is stretched until wrinkles disappear, and the front waist circumference area S1 and the rear waist circumference S1 and the rear waist circumference are extended. Mark the boundaries of the region of region S2. The exterior body 50 can be cut based on the mark to obtain a test piece divided into a plurality of regions. Next, both ends (5 mm width) of the cut out test piece are sandwiched by the chucks (pinching tools) of the tensile tester (Instron). At this time, the distance between the chucks is set to 100 mm. Next, with one of the chucks fixed in the width direction W, the other chuck is moved so as to change the distance between the chucks. The moving speed of the chuck at this time is 254 mm / min. During the movement of the chuck, the stress related to the chuck is measured, and the stress (N / mm) obtained in the state of 70% (constant width) from the extended state is defined as "tensile stress". Table 1 shows the measurement data of the tensile stress obtained in the absorbent article 1 according to Example 1 and Example 2.

FIG. 4 is a diagram schematically showing a state in which the absorbent article 1 is attached to the wearer. FIG. 4 is a diagram showing a mounting state on the side surface side in a standing state. The line of the wearer's body is indicated by the alternate long and short dash line BL. As shown in FIG. 4, the body shape of the wearer differs between the ventral side and the dorsal side, and the waist circumference size changes in the longitudinal direction L of the absorbent article 1. As a result of diligent research by the applicant, in the wearer's abdomen, the waist circumference near the dent at the lower end of the abdomen is the shortest, and the waist circumference becomes longer from the dent at the lower end of the abdomen toward the upper side and the inseam side. In addition, on the back of the wearer, the waist circumference becomes shorter as the distance from the bulge of the buttocks increases, and in the vicinity of the waist (the thinnest part of the torso), there is little change in the waist circumference, and it is almost outward of the body. It has a flat shape with little bulge. In the absorbent article 1, the region where the stress is large is in close contact with the body. At this time, for example, when the region having a large stress is in close contact with the portion having a relatively long waist circumference, the region having a large stress moves to the portion having a short waist circumference due to the contraction of the absorbent article 1, so that the absorbent article 1 becomes. It may shift. However, in the present embodiment, the tensile stress in the width direction W of the lower abdominal region F13 is larger than the tensile stress in any region of the front waist circumference region S1. That is, the relationship of tensile stress satisfies F13> F11, F13> F12, and F13> F14. Further, the tensile stress in the width direction W of the rear waist region R11 is larger than the tensile stress in any region of the rear waist circumference region S2. That is, the relationship of tensile stress satisfies R11> R12, R11> R13, and R11> R14. The lower abdominal region F13 that abuts on the abdomen with the shortest girth dimension has the largest tensile stress, and the rear waist region R11 that abuts on the back that abuts on the shortest girth dimension has the largest tensile stress and the body has the shortest girth dimension. The region with the highest stress hits. By applying the region of maximum stress to the most concave part of the body, the absorbent article 1 can be prevented from being displaced in the longitudinal direction L by fitting the absorbent article 1 to the shape of the body due to the contraction of the absorbent article 1. .. That is, by arranging a region having a large stress in the recess of the body, the shape of the body and the degree of pressure applied by the stress of the absorbent article 1 match, and the displacement of the absorbent article 1 can be suppressed. In addition, since the rear waist region R11, which has a relatively large stress, fits in the vicinity of the dorsal waist where the body has a flat shape, it is difficult for the displacement of L in the longitudinal direction during fitting to occur, and it is suitable for the absorbent article 1. Easy to maintain position.

The tensile stress in the width direction W of the upper back region R12 may be larger than the tensile stress in the width direction W of the lower back region R13. That is, the relationship of tensile stress may satisfy R12> R13. The tensile stress in the rear waist circumference region S2 gradually increases in the order of the lower back region R13, the upper back region R12, and the rear waist region R11. The lower back region R13 is a portion that covers the bulge of the wearer's buttocks. The waist circumference on the dorsal side gradually shortens from the bulge of the buttocks toward the upper side. By increasing the stress of the absorbent article 1 as the waist circumference of the body becomes smaller, the absorbent article 1 can be aligned with the wearer's body shape and the deviation of the absorbent article 1 in the longitudinal direction L can be suppressed. In addition, the lower dorsal region R13 is arranged to face the discharged stool. If the tensile stress of the lower back region R13 is large, the stool may come into close contact with the body and the wearing feeling may be deteriorated. However, the lower back region R13 has a smaller stress than the rear waist region R11 and the upper back region R12, and does not come into close contact with the body. Therefore, the discharged stool can be continuously accommodated without being in close contact with the body, and deterioration of the wearing feeling can be suppressed. Further, the bulging portion of the buttocks covered by the lower back region R13 is a portion where the body can easily move during operation. Since the absorbent article 1 does not adhere too much to the portion where the body easily moves during the operation, the absorbent article 1 is less likely to swell due to the movement of the body, and the displacement can be suppressed.

The tensile stress in the width direction W of the lower back region R13 may be larger than the tensile stress in the width direction W of the rear leg region R14. That is, the relationship of tensile stress may satisfy R13> R14 and R11> R12> R13> R14. The tensile stress in the rear waist circumference region S2 gradually increases in the order of the rear leg region R14, the lower back region R13, the upper back region R12, and the rear waist region R11. The waist circumference on the dorsal side becomes shorter from the bulge of the buttocks toward the inseam side. Therefore, the waist circumference of the portion where the hind leg region R14 is arranged is shorter than the waist circumference of the portion where the lower back region R13 is arranged. However, the hind leg region R14 is a region in which the base of the foot is arranged and is easy to move following the movement of the foot. By making the tensile stress of the hind leg region R14 relatively small, it is possible to improve the wearing feeling without hindering the movement of the base of the foot.

The tensile stress in the width direction W of the front waist region F11 may be smaller than the tensile stress in the width direction W of the upper abdominal region F12. That is, the relationship of tensile stress may satisfy F11 <F12. The waist circumference of the wearer's abdomen has the shortest dent at the lower end of the abdomen and becomes longer as it moves upward from the dent. The tensile stress in the anterior waist circumference region S1 gradually decreases in the order of the lower abdominal region F13, the upper abdominal region F12, and the anterior waist region F11. By reducing the stress of the absorbent article 1 as the waist circumference of the body increases, the absorbent article 1 can be aligned with the wearer's body shape, and the displacement of the absorbent article 1 in the longitudinal direction L can be suppressed. Further, the bulging portion of the abdomen covered by the front waist region F11 is a portion where the body can easily move during operation. Since the absorbent article 1 does not adhere too much to the portion where the body easily moves during the operation, the absorbent article 1 is less likely to swell due to the movement of the body, and the displacement can be suppressed.

The tensile stress in the width direction W of the lower abdominal region F13 is the total value of the tensile stress in the width direction W of the front waist region F11, the tensile stress in the width direction W of the upper abdominal region F12, and the tensile stress in the width direction W of the front leg region F14. It may be as follows. That is, the relationship of tensile stress may satisfy F13 <F11 + F12 + F14 or F13 = F11 + F12 + F14. If the tensile stress of the lower abdominal region F13 is too large as compared with the surroundings, it is possible to suppress the displacement of the absorbent article 1, but there is a possibility that the wearing feeling may be deteriorated by local tightening. Since the tensile stress of the lower abdominal region F13 is equal to or less than the total value of the tensile stresses of the other regions of the front waist circumference region S1, the lower abdominal region F13 does not protrude too much with respect to the total pressure applied to the front waist circumference region S1. It is possible to suppress the slippage while suppressing it.

The relationship of the tensile stress in the region of the front waist circumference region S1 may satisfy F13> F12> F11> F14. The relationship of tensile stress can be arranged according to the circumference of the waist of the abdomen, the absorbent article 1 can be fitted to the lower abdomen region F13 having a relatively short circumference, and the trace of the elastic member of the suspension can be seen. By reducing the stress in the front leg region F14 where it is easy to attach, it is possible to improve the wearing feeling of the wearer without tightening the vicinity of the thigh.

The tensile stress in the width direction W of the rear waist region R11 is larger than the tensile stress in any other region. That is, the relationship of tensile stress satisfies R11> R12, R11> R13, R11> R14, R11> F11, R11> F12, R11> F13, and R11> F14. By applying the largest stress to the most concave part of the body in the back portion, it is possible to prevent the absorbent article 1 from shifting in the longitudinal direction L due to the contraction of the absorbent article 1. Further, since the tensile stress in the width direction W of the rear waist region R11 is larger than the tensile stress in any other region, the displacement can be suppressed by increasing the pressure applied to the back while suppressing the pressure applied to the abdomen. The feeling of pressure on the wearer's abdomen can be suppressed, and the feeling of wearing can be improved.

The total value of the tensile stress in the width direction W of the four regions of the rear waist circumference region S2 may be larger than the total value of the tensile stress in the width direction W of the four regions of the front waist circumference region S1. That is, the relationship of tensile stress may satisfy R11 + R12 + R13 + R14> F11 + F12 + F13 + F14. The wearer's body shape differs between the abdomen and the back, with the ventral side bulging more than the dorsal side. The total value of the tensile stresses in the multiple regions of the anterior girth region S1 is relatively small, it is not overtightened to the ventral side where the body has a lot of bulge, and the total values of the tensile stresses in the multiple regions of the rear girth region S2 are compared. The absorbent article 1 fits on the back side, which is large in size and has little bulge, and can improve the wearing feeling and suppress the displacement at the same time.

The total value of the tensile stress in the width direction W of the front waist region F11 and the tensile stress in the width direction W of the rear waist region R11 is the tensile stress in the width direction W of the lower abdominal region F13 and the tensile stress in the width direction W of the lower back region R13. May be greater than the total value of. That is, the relationship of tensile stress may satisfy F11 + R11> F13 + R13. In the wearing state, the front waist circumference area S1 and the rear waist circumference area S2 are connected to each other, and both cover the wearer's waist circumference in cooperation with each other. The size of the circumference of the waist of the wearer tends to be shorter in the vicinity of the waist opening than in the vicinity of the lower abdomen. By increasing the total value of the tensile stress in the vicinity of the waist opening, it is possible to design the stress according to the circumference including the front and back of the body, and it is possible to suppress the displacement of the absorbent article 1.

The total value of the tensile stress in the width direction W of the front waist region F11 and the tensile stress in the width direction W of the rear waist region R11, and the tensile stress in the width direction W of the lower abdominal region F13 and the tensile stress in the width direction of the lower dorsal region R13. The total value may be larger than the total value of the tensile stress in the width direction W of the upper abdominal region F12 and the tensile stress in the width direction W of the upper back region R12. That is, the relationship of tensile stress may satisfy F11 + R11> F12 + R12 and may satisfy F13 + R13> F12 + R12. The circumference of the waist is the shortest in the vicinity of the waist opening, and becomes longer from the waist opening toward the inseam side. The reason for the lengthening is due to the bulge of the abdomen and the inclination from the apex of the buttocks. The bulge of the abdomen and the inclination from the apex of the buttocks mainly correspond to the upper abdominal region F12 and the upper dorsal region R12. Since the total value of the tensile stress of the upper abdominal region F12 and the upper back region R12 is smaller than the total value of the tensile stress of the front waist region F11 and the tensile stress of the rear waist region R11, the bulge of the body is not tightened and the body is touched. The absorbent article 1 is arranged along the line. The circumference of the waist is shortened by the dent of the lower abdomen toward the inseam side rather than the bulge of the abdomen and the inclination from the apex of the buttocks. The total value of the tensile stress of the lower abdominal region F13 and the tensile stress of the lower back region R13 is larger than the total value of the tensile stress of the upper abdominal region F12 and the upper back region R12, and fits the dent of the lower abdomen. The region from the vicinity of the waist opening to the lower end of the abdomen is arranged according to the circumference of the body, and it is possible to suppress the deviation of the entire absorbent article 1 while suppressing the deterioration of the wearing feeling due to local tightening.

The total value of the tensile stress in the width direction W of the rear waist region R11 and the tensile stress in the width direction W of the upper back region R12 is the tensile stress in the width direction W of the lower abdominal region F13 and the tensile stress in the width direction W of the hind leg region R14. May be greater than the total value of. That is, the relationship of tensile stress may satisfy R11 + R12> R13 + R14. The shape of the body on the back is concave on the upper side, and the rear waist region R11 and the upper back region R12 are relatively concave regions on the back. By fitting the recessed portion of the back portion with a strong stress, the displacement of the absorbent article 1 is suppressed. Further, the total value of the tensile stress in the width direction W of the front waist region F11 and the tensile stress in the width direction W of the upper abdominal region F12 is the tensile stress in the width direction W of the lower abdominal region F13 and the tensile stress in the width direction W of the front leg region F14. It may be larger than the total value of stress. That is, the relationship of tensile stress may satisfy F11 + F12 <F13 + F14. The shape of the body of the abdomen is concave on the lower side, and the lower abdominal region F13 and the front leg region F14 are relatively concave regions in the abdomen. By fitting the recessed portion of the abdomen with a strong stress, the displacement of the absorbent article 1 is suppressed. The total value of the tensile stress in the rear waist region R11 and the tensile stress in the upper back region R12 may be larger than the total value of the tensile stress in the width direction W of the lower abdominal region F13 and the tensile stress in the width direction W of the front leg region F14. The relationship of tensile stress may satisfy R11 + R12> F13 + F14. The posterior waist region R11 and the upper back region R12 are regions that are relatively recessed in the back. Further, the lower abdominal region F13 and the front leg region F14 are regions that are relatively recessed in the abdomen. It can be tightened tightly against the recessed areas in the abdomen and back to prevent slippage. In addition, by tightening the dorsal side more strongly than the ventral side, the pulling force is increased toward the upper side of the dorsal side, and a force opposite to the direction in which the ventral side is displaced downward can be applied. Therefore, it is possible to prevent the absorbent article 1 from slipping down.

The tensile stress in the width direction W of R11 in the rear waist region may be larger than the tensile stress in the width direction W of the lower abdominal region F13. That is, the relationship of tensile stress may satisfy R11> F13. The tensile stress of the lower abdominal region F13 is the largest in the front waist circumference region S1, the tensile stress of the rear waist region R11 is the largest in the rear waist circumference region S2, and the lower abdominal region F13 and the rear waist region R11 are pulled to each other in the mounted state. At this time, since the tensile stress of the rear waist region R11 is larger than the tensile stress of the lower abdominal region F13, an obliquely upward force acts from the center of the abdomen toward the side of the body. Therefore, even if a force on the inseam region side acts during absorption of body fluid such as urine, the withdrawal of the absorbent article 1 can be suppressed.

The tensile stress in the width direction W of R12 in the upper back region may be larger than the tensile stress in the width direction W of the lower abdominal region F13. That is, the relationship of tensile stress may satisfy R12> F13. In the worn state, the lower abdominal region F13 and the upper back region R12 pull each other. At this time, since the tensile stress of the upper back region R12 is larger than the tensile stress of the lower abdominal region F13, an obliquely upward force acts from the center of the abdomen toward the side of the body. Therefore, even if a force on the inseam region side acts during absorption of body fluid such as urine, the withdrawal of the absorbent article 1 can be suppressed.

The tensile stress in the width direction W of the lower abdominal region F13 may be larger than the tensile stress in the width direction W of the lower back region R13. That is, the relationship of tensile stress may satisfy F13> R13. The lower abdominal region F13 and the lower back region R13 are pulled to each other via the side joint portion 16. At this time, since the relationship of tensile stress satisfies F13> R13, the rear waist circumference region S2 can be pulled toward the front waist circumference region S1 by the lower abdominal region F13 having a relatively large tensile stress, and the fit to the lower end of the abdomen can be further improved. Further, since the tensile stress of the rear waist region R11 is relatively large in the back portion, an upward force is generated, and the displacement of the absorbent article 1 can be suppressed.

The tensile stress in the width direction W of the upper back region R12 may be larger than the tensile stress in the width direction W of the upper abdominal region F12. That is, the relationship of tensile stress may satisfy R12> F12. Further, preferably, the tensile stress in the width direction W of the upper back region R12 may be twice or more the tensile stress in the width direction W of the upper abdominal region F12. The shape of the body is recessed above the apex of the buttocks where the upper back region R12 is located, and the portion above the lower end of the abdomen where the upper abdomen region F12 is arranged is bulged. The difference in the circumference of the waistline between the region at the beginning of the dent with respect to the apex of the buttocks and the region at the beginning of the bulge with respect to the lower end of the abdomen tends to be large. As for the relationship of tensile stress, by satisfying R12> F12, the stress arrangement can be made more suitable for the shape of the body, and the slippage of the absorbent article 1 can be suppressed.

The total value of the tensile stress in the width direction W of the rear waist region R11 and the tensile stress in the width direction W of the upper back region R12 is the tensile stress in the width direction W of the front waist region F11 and the tensile stress in the width direction W of the upper abdominal region F12. It may be greater than or equal to the total value of stress. According to this aspect, by tightening the dorsal side more strongly than the ventral side to the vicinity of the recessed portion in the shape of the body, a force opposite to the direction in which the ventral side shifts downward can be applied. It is possible to suppress the slippage of the.

Further, as the configuration for suppressing the displacement of the absorbent article, the configuration of the absorbent main body 20 may be changed in addition to the difference in stress in the region of the exterior body 50. More specifically, the low basis weight portion LR may be arranged in a region overlapping the lower abdominal region F13. The absorption core 31 is easily deformed by the low basis weight portion LR, the lower abdominal region F13 fits the dent at the lower end of the abdomen more, and the deviation of the front waist circumference region S1 can be further suppressed. The low basis weight portion LR may be arranged at least in the lower abdominal region F13, and may be arranged over other regions.

Further, a configuration for increasing the stress in each region can be realized by, for example, the following. Increase the elongation ratio of the waist elastic member arranged on the exterior body. Alternatively, the number of thread-shaped or string-shaped waist elastic members 55 is increased. Alternatively, the count of the thread-shaped waist elastic member arranged on the exterior body is increased. Further, as the configuration for reducing the stress in each region, the reverse configuration of the configuration for increasing the stress may be adopted.

Although the present invention has been described in detail using the above-described embodiments, it is clear to those skilled in the art that the present invention is not limited to the embodiments described in the present specification. The present invention can be implemented as modifications and modifications without departing from the spirit and scope of the present invention as determined by the description of the scope of claims. Therefore, the description of the present specification is for the purpose of exemplary explanation and does not have any limiting meaning to the present invention.

It is possible to provide an absorbent article capable of suppressing the slippage of the absorbent article.

1: Absorbent article, 31: Absorbent core, LR: Low basis weight part, F11: Front waist area, F12: Upper abdomen area, F13: Lower abdomen area, F14: Front leg area, R11: Back waist area, R12: Upper back Area, R13: lower back area, R14: hind leg area, S1: front waist area, S1F: front end edge, S2: rear waist area, S2R: rear end edge, S3: inseam area, L: longitudinal direction, W: width direction

Claims (11)

In the longitudinal and width directions that are orthogonal to each other,
The front waist area, the rear waist area, and the inseam area arranged between the front waist area and the rear waist area, and the inseam area.
An absorbent article having an absorbent core located at least in the inseam area.
The front girth area and the rear girth area are provided with a plurality of areas obtained by dividing the front girth area and the rear girth area in the longitudinal direction.
The plurality of regions are a front waist region located 0 to 25% behind the total length of the front waist region in the longitudinal direction from the front end edge of the front waist region, and the front waist region from the front end edge of the front waist region. An upper abdominal region located 25 to 50% posterior to the longitudinal length of the anterior girth region and a lower abdominal region located 50 to 85% posterior to the longitudinal length of the anterior girth region from the front edge of the anterior girth region. The front leg region located 85 to 100% behind the total length of the front girth region in the longitudinal direction from the front end edge of the front girth region, and the longitudinal direction of the rear girth region from the rear end edge of the rear girth region. A posterior waist region located 0 to 25% anterior to the total length, an upper dorsal region located 25 to 50% anterior to the longitudinal length of the posterior girth region from the posterior edge of the posterior girth region, and the posterior region. The lower dorsal region located 50 to 85% forward of the longitudinal length of the posterior girth region from the posterior edge of the girth region, and the longitudinal length of the posterior girth region from the posterior end edge of the posterior girth region. With a hind leg region located 85-100% anterior to,
The widthwise tensile stress in the lower abdominal region is greater than the widthwise tensile stress in any region of the anterior girth region.
An absorbent article in which the widthwise tensile stress in the posterior waist region is greater than the widthwise tensile stress in any region of the posterior girth region. In the longitudinal and width directions that are orthogonal to each other,
The front waist area, the rear waist area, and the inseam area arranged between the front waist area and the rear waist area, and the inseam area.
An absorbent article having an absorbent core located at least in the inseam area.
The front girth area and the rear girth area are provided with a plurality of areas obtained by dividing the front girth area and the rear girth area in the longitudinal direction.
The plurality of regions are a front waist region located 0 to 25% behind the total length of the front waist region in the longitudinal direction from the front end edge of the front waist region, and the front waist region from the front end edge of the front waist region. An upper abdominal region located 25 to 50% posterior to the longitudinal length of the anterior girth region and a lower abdominal region located 50 to 85% posterior to the longitudinal length of the anterior girth region from the front edge of the anterior girth region. , The front leg region located 85 to 100% behind the total length of the front waist region in the longitudinal direction from the front end edge of the front waist region, and the longitudinal direction of the rear waist region from the rear end edge of the rear waist region. A posterior waist region located 0 to 25% anterior to the total length, an upper dorsal region located 25 to 50% anterior to the longitudinal length of the posterior girth region from the posterior edge of the posterior girth region, and the posterior region. The lower dorsal region located 50 to 85% forward of the longitudinal length of the posterior girth region from the posterior edge of the girth region, and the longitudinal length of the posterior girth region from the posterior end edge of the posterior girth region. With a hind leg region located 85-100% anterior to,
An absorbent article in which the widthwise tensile stress in the posterior waist region is greater than the widthwise tensile stress in any other region. The absorbent article according to claim 1 or 2, wherein the tensile stress in the width direction of the rear waist region is larger than the tensile stress in the width direction of the lower abdomen region. The absorbent article according to any one of claims 1 to 3, wherein the tensile stress in the width direction of the upper back region is larger than the tensile stress in the width direction of the lower back region. The absorbent article according to claim 4, wherein the tensile stress in the width direction of the lower back region is larger than the tensile stress in the width direction of the hind leg region. The absorbent article according to any one of claims 1 to 5, wherein the tensile stress in the width direction of the anterior waist region is smaller than the tensile stress in the width direction of the upper abdominal region. The total value of the widthwise tensile stress in the anterior waist region and the widthwise tensile stress in the rear waist region is the widthwise tensile stress in the lower abdominal region and the widthwise tensile stress in the lower dorsal region. The absorbent article according to any one of claims 1 to 6, which is larger than the total value of. The total value of the widthwise tensile stress in the anterior waist region and the widthwise tensile stress in the rear waist region, and the widthwise tensile stress in the lower abdominal region and the widthwise tensile stress in the lower dorsal region. The absorbent article according to claim 7, wherein the total value of is larger than the total value of the tensile stress in the width direction of the upper abdominal region and the tensile stress in the width direction of the upper back region. The total value of the widthwise tensile stress in the rear waist region and the widthwise tensile stress in the upper back region is the lateral tensile stress in the lower abdominal region and the widthwise tensile stress in the front leg region. The absorbent article according to any one of claims 1 to 8, which is larger than the total value. Claims 1 to 9, wherein the total value of the tensile stress in the width direction of the four regions of the rear waist circumference region is larger than the total value of the tensile stress in the width direction of the four regions of the front waist circumference region. The absorbent article according to any one. The absorption core has a low basis weight portion in which the basis weight of the absorption material is lower than that of the surroundings.
The absorbent article according to any one of claims 1 to 10, wherein the low basis weight portion is arranged in a region overlapping the lower abdominal region.

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