WO2014087970A1 - Absorbent article - Google Patents

Abstract

Provided is an absorbent article which has improved comfort and suppresses irritation to the skin due to the side bonding portions where the forward waist area and the rear waist area are bonded. This disposable diaper (1) is an underpants-type absorbent article. An exterior body is provided with leg-encircling rear elastic members (57) arranged along the opening around the leg of the rear waste area, and leg-encircling front elastic members (51) arranged along the opening around the legs in the front waist area. In a stretched state in which the leg-encircling front elastic members (51) and the leg-encircling rear elastic members (57) are stretched, the angle formed between the edge leg-encircling rear elastic member (571), which is positioned on the side of the opening around the legs, and an imaginary line (FL1) extending in the width direction, is greater than the angle formed by the edge leg-encircling front elastic member (511), which is positioned on the side of the opening around the legs and the imaginary line (FL1), and the stretching force of the width direction on the edge leg-encircling front elastic member is higher than the stretching force in the width direction of the edge leg-encircling rear elastic member.

Description

Absorbent articles

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

In Patent Document 1, side edges corresponding to the front body arranged on the wearer's abdomen and the back body arranged on the back of the wearer are joined together, and the wearer's legs are inserted. A pants-type absorbent article is disclosed in which a leg opening and a waist opening into which a wearer's waist is inserted are formed.

The absorbent article of Patent Document 1 includes an end position of a leg elastic member arranged in the front body and a leg elastic member arranged in the rear appearance in a joint portion where the front body and the back body are joined. At least one end position is shifted in the front-rear direction. The part where the front leg elastic member is shifted from the front leg elastic member is compared with the part where the front leg elastic member and the rear leg elastic member overlap. The rigidity is low and the uncomfortable feeling can be reduced.

Japanese Patent Laid-Open No. 2007-21709

However, the absorbent article of Patent Document 1 has the following problems.

The front-rear inner end (inner crotch end) of the joint is disposed around the wearer's leg. The joint portion has higher rigidity than the front body and the rear body adjacent to the joint portion, and the inner end portion in the front-rear direction of the joint portion may hit the wearer, and may cause irritation to the wearer.

In the absorbent article of Patent Document 1, the front body side elastic force differs from the back body side elastic force at the portion where the front leg elastic member and the rear leg elastic member are different from each other. Is considered to be sent to the front or back.

However, even in the case where the front leg elastic member and the rear leg elastic member are displaced, even if a part of the side joint is moved toward the front body or the rear side, There is a possibility that the inner end portion in the direction (the end portion on the crotch side) is not sufficiently brought close to the front view or the rear view, and the inner end portion in the front-rear direction of the joint portion hits the wearer's leg.

Therefore, an object of the present invention is to provide an absorbent article that can suppress irritation to the skin due to a side joint portion that joins the front waistline region and the back waistline region and can improve the feeling of wearing.

The absorbent article according to the present invention includes a front-rear direction extending to the front side of the body and a rear side of the body, a width direction orthogonal to the front-rear direction, an inner direction toward the wearer, and an outer direction toward the opposite side to the inner direction. An absorbent main body having an absorbent body, and an outer body disposed in the outer direction than the absorbent main body, and a front waistline region disposed on the abdomen side of the wearer, on the back side of the wearer A rear waistline region disposed; and a crotch region located between the front waistline region and the rear waistline region and disposed in a crotch of a wearer; and the width of the front waistline region of the exterior body A pair of legs around which the wearer's legs are inserted by forming a pair of side joints in which the outer ends in the direction and the outer ends in the width direction of the rear waist region of the exterior body are joined A pant-type absorbent article provided with an opening, wherein the exterior body A plurality of first elastic members disposed along one leg opening in the front waistline or the rear waistline, and along the other leg opening in the front waistline or the rear waistline. A plurality of second elastic members arranged in a stretched state in which the plurality of first elastic members and the plurality of second elastic members are expanded, The angle formed by the first elastic member at the end located on the side of the leg opening and the imaginary line extending in the width direction is the end located on the side of the leg opening at the most of the plurality of second elastic members. It is larger than the angle formed by the second elastic member and the imaginary line, and the expansion / contraction ratio in the width direction of the end second elastic member is higher than the expansion / contraction ratio in the width direction of the end first elastic member. Is the gist.

1 is a schematic perspective view of a disposable diaper according to Embodiment 1. FIG. FIG. 2 is a developed plan view of the disposable diaper according to the first embodiment. FIG. 3 is a side view of the disposable diaper shown in FIG. 1 in an extended state. FIG. 4 is a view showing a state where the disposable diaper shown in FIG. 1 is mounted.

Next, a disposable diaper 1 as an absorbent article according to an embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

First, based on FIG.1 and FIG.2, the whole structure of the disposable diaper as an absorbent article is demonstrated. FIG. 1 is a schematic perspective view of a disposable diaper 1 constituting the disposable diaper in the present embodiment. FIG. 2 is a developed plan view of the disposable diaper 1 according to the present embodiment. The disposable diaper 1 is a pants-type disposable diaper.

The disposable diaper 1 includes a front-rear direction L extending to the wearer's body front side and a rear body side, a width direction W orthogonal to the front-rear direction L, an inner direction toward the wearer, and an outer direction toward the inner direction. And having a thickness direction.

As shown in FIG. 2, the disposable diaper 1 includes a front waistline region S1 applied to the wearer's front waistline, a rear waistline region S2 applied to the wearer's rear waist, and the wearer in the front-rear direction of the disposable diaper 1. And a crotch region S3 located between the front waistline region S1 and the rear waistline region S2.

The front waistline edge 4 positioned outside the front waistline region S1 in the width direction W is joined to the rear waistline edge 4 ′ positioned outside the widthwise direction W of the rear waistline region S2, and the front waistline edge 6 is The disposable diaper 1 is formed in a pants shape by being joined to the rear waistline edge 6 '. Side joints 11 are formed in the front waistline region and the back waistline region of the pants-type disposable diaper, and the crotch region S3 is a region on the inner side in the front-rear direction than the side joint portion 11 It is. The configuration of the side joint portion 11 and the deformation mode at the time of mounting will be described in detail later.

As shown in FIG. 1, the disposable diaper 1 has a waistline opening 8 disposed around the waist of the wearer in a pant-shaped state (a state where a pair of side joints are formed). And a pair of leg periphery opening part 9 arrange | positioned surrounding a wearer's leg periphery is formed.

The disposable diaper 1 includes an absorbent main body 1A including a top sheet 10, an absorber 40 and an absorber back sheet (not shown), and an exterior body 1B including a front exterior sheet 70F, a rear exterior sheet 70R, and the like. These are configured to be bonded to each other by an adhesive or heat fusion.

The exterior body 1B includes a front exterior sheet 70F disposed across the front waistline region and the crotch region, a rear exterior sheet 70R disposed across the rear waistline region and the crotch region, and the front waistline to the rear waistline The exterior center sheet 100 arrange | positioned over a region is comprised, and the exterior part of the disposable diaper 1 is comprised. The exterior body 1B is located outward from the absorbent main body 1A including the absorber 40, and is disposed on the non-skin contact side surface of the disposable diaper.

The front exterior sheet 70F is disposed across the front waistline region S1 and the crotch region S3, and is folded inward from a fold along the width direction at the front end of the disposable diaper. The exterior center sheet 100 is disposed between the folded sheets of the front exterior sheet 70F. The rear exterior sheet 70R is disposed across the rear waistline region S2 and the crotch region S3, and is folded inward from a fold along the width direction at the rear end of the disposable diaper. . The exterior center sheet 100 is disposed between the folded sheets of the rear exterior sheet 70R.

The front exterior sheet 70F and the rear exterior sheet 70R can be formed of an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, a waterproof film, or the like. The front exterior sheet 70F and the rear exterior sheet 70R according to the present embodiment are formed of a spunbonded nonwoven fabric having a basis weight of 20 g / m ^{2 made} of polypropylene.

The exterior center sheet 100 connects the front exterior sheet 70F and the rear exterior sheet 70R. Therefore, it is possible to prevent the absorbent main body 1A from being exposed in a form in which the front exterior sheet and the rear exterior sheet are separated in the front-rear direction. Further, in the manufacturing process, the leg opening can be formed or bonded to the absorbent main body 1A in a state where the separated front exterior body and rear exterior body are connected.

The exterior center sheet 100 can be formed of an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, a waterproof film, or the like. The exterior center sheet 100 according to the present embodiment is formed of an SMS nonwoven fabric having a basis weight of 15 g / m ^{2 made} of polypropylene.

The absorbent main body 1A includes a top sheet 10, an absorber back sheet, and leg side gathers, and is disposed closer to the wearer than the exterior body 1B.

The top sheet 10 is a sheet that forms a skin contact surface that can be in direct contact with the skin of the wearer. The top sheet 10 is disposed closer to the skin contact surface than the absorber 40. The top sheet 10 is formed of a liquid-permeable sheet such as a hydrophilic nonwoven fabric or woven fabric, an apertured plastic film, or an apertured hydrophobic nonwoven fabric. The surface sheet 10 according to the present embodiment is formed of a hydrophilic spunbonded nonwoven fabric having a basis weight of 20 g / m ^{2 made} of polypropylene. The top sheet 10 extends to both sides in the width direction from the surface of the absorbent body 40 on the skin contact side, covers the outer end in the width direction of the absorbent body, and reaches the non-skin contact surface side of the absorbent body.

A second sheet may be provided on the non-skin contact surface side of the top sheet 10. By providing the second sheet, the absorption speed of the body fluid can be increased and the return of the body fluid after absorption can be suppressed.

The absorber 40 is joined between the top sheet 10 and the absorber back sheet by a hot melt adhesive. Hot melt adhesives are applied respectively to the composite sheet and the back sheet, for example, by a spiral coating method, respectively painted in basis weight ^{5g / m 2, 8g / m} 2.

The absorber 40 is formed of a mixed powder such as pulverized pulp or superabsorbent polymer. In plan view, the shape of the absorber 40 is substantially hourglass-shaped.

The absorber back sheet is provided on the non-skin contact surface side of the absorber 40. The absorber back sheet is formed of a sheet such as a liquid-impermeable film (for example, polyethylene). The absorber back sheet is disposed outward from the absorber and is liquid-impermeable. The absorber back sheet extends from the absorber 40 to the outside in the front-rear direction.

Legside gather is an orthostatic gather. The leg side gather has a leak-proof side sheet 32, a leg side elastic member 33, and a crotch elastic member 34, and is disposed along the front-rear direction at the width direction end of the absorber 40. The leak-proof side sheet 32 is disposed at both ends in the width direction W of the absorber 40. The leak-proof side sheet 32 is formed of a sheet such as a liquid-impermeable nonwoven fabric. One end in the width direction of the leak-proof side sheet 32 is joined to the top sheet folded back to the non-skin contact surface side of the absorber, and the other end in the width direction of the leak-proof side sheet 32 is Further, it is folded from the width direction side portion of the absorbent body 40 to the surface sheet side and joined to the surface of the surface sheet 10 on the skin contact surface side.

The leak-proof side sheet 32 is joined to a top sheet or the like by a hot melt adhesive at both ends in the front-rear direction of the absorbent main body 1A. The leak-proof side sheet 32 is not joined to the surface sheet or the like at the center in the front-rear direction of the absorbent main body 1A, and is disposed so as to rise from the surface sheet toward the wearer.

The leg side elastic member 33 is disposed between the folded leakage preventing side sheets 32. Two leg-side elastic members are arranged along the front-rear direction at the inner end in the width direction of the leak-proof side sheet 32 that is spaced apart from the left and right. At least a part of the leg side elastic member 33 is arranged on the outer side in the width direction than the narrow portion 42 of the absorber. When the leg side elastic member contracts in the front-rear direction, the leg side gather rises to the wearer side.

The crotch elastic member 34 is disposed between the folded leak-proof side sheets 32. The crotch elastic member 34 is located on the outer side in the width direction than the leg side elastic member, and two crotch elastic members 34 are arranged along the front-rear direction.

The leg side elastic member 33 according to the present embodiment is stretched and fixed on the left and right two by a thickness of 620 dtex and an elongation rate of 3.0 times. The crotch elastic member 34 is stretched and fixed by two on the left and right sides at a thickness of 470 dtex and an elongation rate of 2.7 times.

The front waistline region S1 and the back waistline region S2 are provided with elastic members that expand and contract at least in the width direction. The exterior body 1B in the front waistline region S1 is provided with a plurality of front elastic members 50 that expand and contract in the width direction, and the exterior body 1B in the back waistline region S2 is provided with a plurality of back elastic members 55 that expand and contract in the width direction. It has been.

The front elastic member 50 is all arranged along the width direction. The front elastic member 50 is made of a long and narrow rubber such as a synthetic rubber, and 14 are arranged. The distance between each front elastic member 50 is 10 mm. Specifically, two elastic members having a thickness of 620 dtex and eight elastic members having a thickness of 780 dtex are arranged from the leg opening portion side (front-rear direction center side), and an elastic member having a thickness of 470 Dtex is provided. Four members are arranged. All of the elastic members are arranged with an elongation ratio of 2.1 times. The front elastic member 50 has a front waist elastic member 53 disposed in the vicinity of the waist opening 8. Five front waist elastic members 53 are fixed at a thickness of 940 dtex and an elongation rate of 3.4 times.

Of the front elastic member 50, a part of the two elastic members arranged on the leg opening side (front-rear direction center side) is arranged along the leg opening and constitutes the front leg elastic member 51. . The front elastic member 50 includes a front leg-hole elastic member 51 and a front waistline elastic member 52 positioned on the outer side in the front-rear direction than the front leg-hole elastic member 51.

The rear elastic member 55 includes three rear leg elastic members 57 arranged along the leg opening, and a rear waist elastic member 56 positioned on the outer side in the front-rear direction than the rear leg elastic member 57. . The rear waistline elastic member 56 is disposed along the width direction. Ten rear waistline elastic members 56 are stretched and fixed at a thickness of 780 dtex and an elongation ratio of 2.1 times.

The rear leg elastic member 57 of the present embodiment has a thickness of 620 dtex, and is 2.3 times or less (specifically, 1.4 times) in the region overlapping with the absorber. In the region that does not overlap with the region, the elongation rate is 2.3 times.

Further, the rear elastic member 55 has a rear waist elastic member 58 disposed in the vicinity of the waist opening 8. Five back waist elastic members 58 are fixed with a thickness of 940 dtex and an elongation rate of 3.4 times.

The front elastic member 50 and the rear elastic member 55 are stretched by an adhesive (for example, hot melt adhesive) between the front exterior sheet 70F and the exterior center sheet 100, and between the rear exterior sheet 70R and the exterior center sheet 100. It is joined between.

Next, the configuration of the front elastic member 50 and the rear elastic member 55 and the deformation state of the side joint portion will be described with reference to FIGS. FIG. 3 is a side view of the disposable diaper 1 in the extended state in which the front elastic member 50 and the rear elastic member 55 are extended. FIG. 4 is a view showing a state in which a disposable diaper is mounted.

The extended state is a state in which the rear leg elastic member 57 as the first elastic member and the front leg elastic member 51 as the second elastic member are extended. Specifically, the disposable diaper is formed into a predetermined cylinder. It is in a state of wearing.

The dimensions of the cylinder can be set as follows. First, an exterior body constituting a disposable diaper is prepared in a state where the front elastic member and the rear elastic member are not arranged. The distance between the side joint portions 11 at the front end portion of the exterior body in a state where the elastic member is not disposed is measured. The distance between the side joints 11 at the front end of the exterior body is L11. Moreover, the distance between the side junction parts 11 in the rear side edge part of the exterior body in the state where the elastic member is not arranged is measured. The distance between the side joints 11 at the rear end of the exterior body is L12. Further, the dimension in the front-rear direction of the front waistline region is measured, and this dimension is L13. The dimension in the front-rear direction of the rear waist area is measured, and this dimension is L14.

The distance L11 between the side joints 11 at the front end of the exterior body and the distance L12 between the side joints 11 at the rear end of the exterior body are summed, and the total length × 0.8 is calculated. Let X be the calculated value. The length of the outer periphery of the cylinder is X. The axial length of the cylinder is set to L13 and L14 or more.

The rear leg-hole elastic member 57 is a linear straight portion 57S extending in the width direction and the front side that is located on both outer sides in the width direction than the straight portion 57S and that is on the inner side in the front-rear direction from the inner side in the width direction toward the outer side in the width direction. A curved curved portion 57C extending from the rear side to the rear side, which is the outer side in the front-rear direction.

The straight portion 57S is disposed along the width direction and is disposed in parallel with the rear waistline elastic member 56. The curved part 57C is arranged along the leg opening 9 on the rear waistline region S2.

Three rear leg elastic members 57 are provided, and among the rear leg elastic members, the end rear leg elastic members 571 arranged closest to the leg opening are virtual lines extending in the width direction. Inclined with respect to FL1. On the other hand, two front leg elastic members 51 are provided, and among the front leg elastic members 51, the end front leg elastic members 511 arranged closest to the leg opening portions are virtual lines extending in the width direction. Arranged along FL1.

Therefore, the angle α formed by the end rear leg-hole elastic member 571 and the imaginary line is larger than the angle formed by the end front leg-hole elastic member 511 and the phantom line (in the embodiment, 0 degree). In the present embodiment, the rear leg elastic member 57 constitutes a first elastic member, and the front leg elastic member 51 constitutes a second elastic member.

In addition, although the edge part front leg periphery elastic member 511 of this Embodiment is arrange | positioned along the width direction, the edge part front leg periphery elastic member 511 may incline with respect to the width direction. In this case, the angle formed by the end front leg-hole elastic member 511 and the imaginary line FL1 may be configured to be smaller than the angle α formed by the end rear leg-hole elastic member 571 and the phantom line.

Further, the elastic force in the width direction of the end front leg elastic member 511 that is the end second elastic member is higher than the elastic force in the width direction of the end rear leg elastic member 571 that is the end first elastic member. It is configured as follows.

The expansion / contraction force in the width direction is a force that expands / contracts in the width direction among the expansion / contraction force by the end second elastic member, and is a force that expands / contracts in the width direction among the expansion / contraction force by the end first elastic member.

The stretching force in the width direction can be measured by the following method.

Cut out disposable diapers and prepare samples to be measured. The size of the sample is set to 50 mm from the lower end of the side part, and 150 mm in the length: stretched in the waist direction. Next, the cut sample is set in a tensile tester in a natural state. The sample is set so that the direction connecting the chucks is along the width direction of the disposable diaper. The distance between chucks when setting is 30 mm. The tensile force when the elongation rate is 90%, that is, the distance between chucks is 27 mm is obtained. This tensile force is defined as the stretching force in the width direction.

Further, the elongation rate in the present embodiment is the elongation rate in the stretched state where the disposable diaper is stretched. Further, the elongation rate can be measured, for example, by the following method.

The product is fixed with the elastic member extended, and the dimensions of the straight part (between both ends in the inner width direction) and the curved part (both ends of the inner width direction from the inside of the locking) are measured (this dimension is I) Do). After marking the straight and curved portions described above, the product is cut at the elastic member portion. After completely removing deposits such as hot melt, the dimension is measured with a non-stretched elastic member placed straight with a ruler (this dimension is designated II). The calculated value of I / II is taken as the expansion rate.

The angle α formed by the end rear leg-hole elastic member 571 and the imaginary line is larger than the angle formed by the end front leg-hole elastic member 511 and the phantom line (0 degrees in the embodiment). The contraction force along the width direction by the end front leg periphery elastic member 511 is likely to be higher than the contraction force along the width direction by the rotation elastic member 571.

Therefore, the side joint portion 11 that joins the front waistline region and the rear waistline region is attracted toward the front waistline region by the front leg periphery elastic member 51 having a relatively high contraction force in the vicinity of the leg periphery opening. Therefore, the front-rearward inner end portion (end portion on the leg opening portion side) of the side joint portion can be drawn toward the front waistline region side. Compared with the configuration in which the front end in the front-rear direction of the side joint (the end on the leg opening side) is disposed between the front waistline and the rear waistline, the front end in the front-rear direction of the side joint The contact pressure between the wearer and the wearer can be reduced, and the wearer's feeling of wear is improved.

Also, when the wearer is sitting on a chair or sleeping, the weight of the wearer is applied to the rear waist area of the disposable diaper. Therefore, when the front-rear inner end of the side joint is drawn toward the rear waistline region, the front-rear inner end of the side joint may irritate the body. However, it is possible to suppress stimulation in a sitting posture or a sleeping posture by pulling the front and rear inner ends of the side joints toward the front waistline region. Furthermore, by pulling the front-rear direction inner end portion of the side joint portion toward the front waistline region, a leg opening that is located on the rear side of the wearer can be widely formed, and the catching of the legs during wearing can be suppressed.

By pulling the side joint portion 11 toward the front waistline region, the side joint portion can be inclined with respect to the line in the front-rear direction of the body. For example, in a state in which the side joint portion is not moved to the front side and the rear side, the front-rear direction inner end portion of the side joint portion and the leg-hole opening portion intersect at substantially right angles. In this state of crossing at right angles, the stimulation at the inner end of the side joint in the front-rear direction is further increased.

However, by inclining the side joints with respect to the longitudinal line of the body, the front and rear inner ends of the side joints are not perpendicular to the leg opening and stimulate the wearer's legs. Can be suppressed.

In addition, since the end of the side joint portion on the leg opening side is shifted to the front waistline side or the rear waistline side (the front waistline side in this embodiment), Compared to the configuration in which the end on the opening side is arranged substantially perpendicular to the body line, the leg opening can be formed wider. Therefore, the leg can be easily passed when worn, and the movable range of the leg can be widened when worn.

The end front leg-hole elastic member 511 as the end second elastic member is disposed closer to the leg opening than the end rear leg elastic member 571 as the end first elastic member. Therefore, the end part of the side joint part 11 on the side of the leg opening part can be pulled toward the front waistline region side by the end front leg part elastic member 511.

In this embodiment, the front leg elastic member 512 adjacent to the end front leg elastic member 511 overlaps with the end rear leg elastic member 571 in the side joint portion 11. In the region where the front leg elastic member 512 and the end rear leg elastic member 571 overlap, the side joints are drawn to both the front waist region and the rear waist region by both elastic members. However, only the end front leg elastic member 511 is disposed closer to the leg opening portion than the region where the front leg elastic member 512 and the end rear leg elastic member 571 overlap with each other. Only the stretching force acts. Therefore, the end portion of the side joint portion on the side of the leg opening portion can be pulled toward the front waistline region side by the end front leg periphery elastic member 511.

In addition, for each member constituting the disposable diaper 1 described above, for example, a material described in JP-A-2006-346439 may be used.

As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

In the present embodiment, one front leg elastic member 51 is arranged closer to the leg opening side than the end rear leg elastic member 571, but the front leg elastic member 51 is elastic to the end rear leg. Two or more members may be arranged closer to the leg opening than the member 571. By the front elastic member 50, the inner end portion in the front-rear direction of the side joint portion can be drawn more effectively.

In addition, the extension rate of the front leg elastic member and the extension factor of the rear leg elastic member may be configured at the same magnification, or the extension rate of the front leg elastic member is set to be higher than that of the rear leg elastic member. By doing so, you may comprise so that the front-back direction inner side edge part of a side junction part may be drawn near to the front waistline area side.

Furthermore, the extension rate of the front elastic member 50 is configured to increase toward the leg opening portion, and the extension rate of the rear elastic member 55 is configured to decrease toward the leg opening portion. You may comprise so that the front-back direction inner side edge part of a side junction part may be drawn near to the front waistline area side.

Further, even if the extension rate of the end front leg-holes elastic member 511 is set to be higher than the end front leg-holes elastic member 511 among the plurality of front elastic members 50, the extension rate of the front elastic member is higher. Good. In this way, by configuring the extension rate of the end front leg-hole elastic member 511 to be high, the end of the side joint portion on the leg-hole opening side can be effectively shifted in the width direction.

Further, the front leg elastic member 51 and the rear leg elastic member 57 may have the same configuration in thickness, number, and elongation rate. According to such a configuration, the contraction force of the front leg elastic member 51 and the rear leg elastic member 57 are substantially the same. However, for example, the rear leg elastic member 57 is inclined with respect to the width direction relative to the front leg elastic member 51, so that the contraction force in the width direction is lower than that of the front leg elastic member 51. As a result, the stretching force in the width direction of the plurality of front leg-hole elastic members is configured to be higher than the stretching force in the width direction of the plurality of rear leg-hole elastic members.

Further, in the present embodiment and the modification, the side joint portion is configured to be drawn toward the front waistline region side, but the configuration is not limited thereto. The plurality of first elastic members may be front leg periphery elastic members disposed in the front waistline region, and the plurality of second elastic members may be rear leg periphery elastic members disposed in the rear waistline region. That is, the configuration of the front elastic member 50 and the rear elastic member 55 may be exchanged so that the side joint portion is drawn toward the rear waistline region.

For example, in the above-described embodiment, the pants-type disposable diaper has been described. However, the present invention is not limited to this and may be a shorts-type napkin.

Thus, it goes without saying that the present invention includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

Note that the entire content of Japanese Patent Application No. 2012-264209 (filed on December 3, 2012) is incorporated herein by reference.

According to the present disclosure, it is possible to provide an absorbent article that can suppress irritation to the skin by the side joint portion that joins the front waistline region and the back waistline region and can improve the feeling of wearing.

1. Disposable diapers (absorbent articles)
DESCRIPTION OF SYMBOLS 3 ... Waist gather 3A ... Waist elastic member 5 ... Leg gather 51: Front leg elastic member 56 ... Rear waist elastic member 57 ... Rear leg elastic member 7 ... Girth gather 10 ... Surface sheet 32 ... Leak-proof side sheet 33 ... Leg Side elastic member 40 ... Absorber 57S ... Linear part 57C ... Curved part 70F ... Front exterior sheet 70R ... Rear exterior sheet 100 ... Exterior center sheet S1 ... Front waistline area S2 ... Rear waistline area S3 ... Inseam area

Claims (6)

An absorbent main body having an absorbent body having a front-rear direction extending to the front side of the body and a rear side of the body, a width direction perpendicular to the front-rear direction, an inner direction toward the wearer, and an outer direction toward the opposite side of the inner direction; An exterior body disposed in the outer direction than the absorbent main body,
The front waistline region disposed on the abdomen side of the wearer, the rear waistline region disposed on the back side of the wearer, and the front waistline region and the rear waistline region, Has an inseam area arranged in the inseam,
The wear is achieved by forming a pair of side joints in which the widthwise outer end of the front waistline region of the exterior body and the widthwise outer end of the rear waistline region of the exterior body are joined. A pants-type absorbent article provided with a pair of leg-hole openings into which a person's legs are inserted,
The exterior body includes a plurality of first elastic members disposed along one leg opening of the front waistline region or the rear waistline region, and the other leg periphery of the front waistline region or the rear waistline region. A plurality of second elastic members disposed along the opening, and
In the extended state in which the plurality of first elastic members and the plurality of second elastic members are extended, the end first elastic member and the width that are located closest to the leg opening portion among the plurality of first elastic members An angle formed by an imaginary line extending in the direction is larger than an angle formed by the imaginary line and the end second elastic member positioned closest to the leg opening portion among the plurality of second elastic members,
The absorbent article, wherein the end portion second elastic member has a higher stretching force in the width direction than the end portion first elastic member in the width direction. The absorbent article according to claim 1, wherein the end second elastic member is disposed closer to the leg opening than the end first elastic member. The absorbent article according to claim 2, wherein a plurality of the second elastic members are arranged closer to the leg opening portion side than the end first elastic member. The extension rate of the second end elastic member is higher than the extension rate of a second elastic member located on the outer side in the front-rear direction than the second end elastic member among the plurality of second elastic members. The absorbent article according to any one of claims 1 to 3. The plurality of first elastic members are rear leg elastic members arranged in the rear waist area,
The absorbent article according to any one of claims 1 to 4, wherein the plurality of second elastic members are front leg-around elastic members disposed in the front waistline region. The plurality of first elastic members are front leg elastic members arranged in the front waistline region,
The absorbent article according to any one of claims 1 to 4, wherein the plurality of second elastic members are elastic members around a rear leg arranged in the rear waistline region.

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