JP2021000222A - Absorbent article - Google Patents

Abstract

To provide an absorbent article capable of suppressing lowering of the absorbent article while securing an absorption function of an absorbent core.SOLUTION: A rear waist area (S2) of an absorbent article (1) has: a rear intermediate area (R12) positioned in front by 50 to 80% of a total length in a longitudinal direction of a rear waist area from a rear end edge of the rear waist area; and a rear crotch area (R13) positioned in front by 80 to 100% of the total length in a longitudinal direction of the rear waist area from a rear end edge of the rear waist area. The absorbent core (50) is arranged in the rear intermediate area and the rear crotch side area. In the rear crotch side area, a rear non-stretchable area (R15) that has no rear side stretchable members (32) in a stretched state is arranged overlapping with the absorbent core. In the rear intermediate area, the rear side stretchable members are continuously arranged between a pair of side bonded parts (60).SELECTED DRAWING: Figure 2

Description

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

A pants-type absorbent article having a pair of side joints in which an outer portion in the width direction of the front exterior body and an outer portion in the width direction of the rear exterior body are joined is known (for example, Patent Document 1). .. Elastic members that expand and contract in the width direction are arranged on the front exterior body and the rear exterior body, and the front exterior body and the rear exterior body fit around the wearer's waist. In addition, an absorption core is arranged on the rear exterior body. If the elastic member contracts too much in the region overlapping the absorption core of the rear exterior body, the length of the absorption core in the width direction cannot be secured, and the body fluid absorption function may not be secured. Therefore, the stretchable member is divided in the region overlapping the absorption core so as not to exhibit the stretchable force (see paragraph 0040 and FIG. 1 of Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-85089

However, if the elastic member is divided so as not to exhibit elastic force in the region overlapping with the absorbent core, the fit of the entire absorbent article to the wearer cannot be ensured, and the absorbent article may slip down.

Therefore, an absorbent article capable of suppressing the slippage of the absorbent article while ensuring the absorbing function of the absorbing core is desired.

The absorbent article according to one embodiment overlaps with the absorbent body having absorption cores arranged in the longitudinal direction and the width direction orthogonal to each other, at least in the inseam area and the rear waist circumference area, and the absorbent body in the thickness direction, and is rearward. After the rear exterior body arranged in the waist circumference area, the front side exterior body arranged in the front waist circumference area overlapping the absorbent body in the thickness direction, and the rear side exterior body arranged in the rear side exterior body and expanding and contracting in the width direction. An absorbent article having a side elastic member and a pair of side joints in which the outer side portion of the front exterior body in the width direction and the outer portion of the rear exterior body in the width direction are joined. The rear waist circumference region includes a rear intermediate region located 50 to 80% ahead of the total length of the rear waist circumference region in the longitudinal direction from the rear end edge of the rear waist circumference region, and the rear end edge of the rear waist circumference region. It has a posterior crotch side region located 80 to 100% anterior to the total length of the posterior waist circumference region in the longitudinal direction, and the absorption core is arranged in the posterior intermediate region and the posterior crotch side region. In the rear crotch side region, a rear non-stretchable region having no stretched rear side elastic member is arranged so as to overlap the absorption core, and in the rear intermediate region, the pair of side joint portions. The rear elastic members are continuously arranged between them.

It is a front view of the absorbent article which concerns on embodiment. It is a top view of the developed state of the absorbent article which concerns on embodiment. It is sectional drawing which follows the AA cross section of the absorbent article shown in FIG. It is sectional drawing which follows the BB cross section of the absorbent article shown in FIG. FIG. 5 is a cross-sectional view taken along the CC cross section of the absorbent article shown in FIG. It is a figure which showed the plurality of regions F11 to F13 and R11 to R13 in the plan view of the developed state of the absorbent article shown in FIG. It is a figure which showed typically the wearing state of the absorbent article which concerns on embodiment. It is a figure which showed typically the wearing state of the absorbent article which concerns on embodiment.

(1) Outline of Embodiment At least the following matters will be clarified by the description of this specification and the accompanying drawings.

The absorbent article according to one embodiment overlaps with the absorbent body having absorption cores arranged in the longitudinal direction and the width direction orthogonal to each other, at least in the inseam area and the rear waist circumference area, and the absorbent body in the thickness direction, and is rearward. After the rear exterior body arranged in the waist circumference area, the front side exterior body arranged in the front waist circumference area overlapping the absorbent body in the thickness direction, and the rear side exterior body arranged in the rear side exterior body and expanding and contracting in the width direction. An absorbent article having a side elastic member and a pair of side joints in which the outer side portion of the front exterior body in the width direction and the outer portion of the rear exterior body in the width direction are joined. The rear waist circumference region includes a rear intermediate region located 50 to 80% ahead of the total length of the rear waist circumference region in the longitudinal direction from the rear end edge of the rear waist circumference region, and the rear end edge of the rear waist circumference region. It has a posterior crotch side region located 80 to 100% anterior to the total length of the posterior girth region in the longitudinal direction, and the absorption core is arranged in the posterior intermediate region and the posterior crotch side region. In the rear crotch side region, a rear non-stretchable region having no stretched rear side elastic member is arranged so as to overlap the absorption core, and in the rear intermediate region, the pair of side joint portions. The rear elastic members are continuously arranged between them.

According to this aspect, in the posterior crotch side region, a posterior non-stretchable region is provided so as to overlap with the absorption core. Therefore, it is possible to prevent the absorption core from contracting too much in the width direction by the rear elastic member, secure the length of the absorption core in the width direction, and secure the body fluid absorption function. As a result of diligent studies by the applicant, it was found that the posterior intermediate region located 50 to 80% ahead of the total length of the posterior girth region in the longitudinal direction is arranged so as to face the upper side of the apex of the buttocks. It was. In the posterior intermediate region, the contraction of the posterior elastic member in the extended state fits the portion having a waist circumference shorter than the apex of the buttocks. Therefore, the absorbent article is less likely to shift in the longitudinal direction, and the sliding of the absorbent article can be suppressed. By ensuring the fit to the body by the rear intermediate region, even if the rear non-stretchable region is provided in the rear crotch side region, the fit in the entire rear waist circumference region can be ensured and the slippage of the absorbent article can be suppressed. Therefore, it is possible to secure the absorption function of the absorption core and suppress the slippage of the absorbent article at the same time.

According to a preferred embodiment, the rear intermediate region may be provided with an exterior non-bonded region in which the absorbent body and the rear exterior body are not bonded.

In the exterior non-joining region, since the rear exterior body is not bonded to the absorbent body, the contractile force of the rear elastic member arranged in the rear intermediate region is less likely to act on the absorbent body. In the posterior intermediate region, the contraction of the absorbent body in the width direction can be suppressed, and the body fluid absorption function can be ensured.

According to a preferred embodiment, the exterior non-junction region may be provided in a region overlapping the absorption core.

According to this aspect, the contractile force of the rear elastic member is less likely to act on the absorbent body in the region overlapping the absorbent core. Therefore, the contraction of the absorption core in the width direction can be suppressed, the absorption core can be easily applied to the body on the surface, and the body fluid absorption function can be ensured.

According to a preferred embodiment, the exterior non-joint region may overlap the posterior stretchable member that is continuous between the pair of side joints.

According to this aspect, in the rear intermediate region, the contraction force by the rear elastic member is less likely to act on the absorbent body. The rear elastic member in the posterior intermediate region secures the fit to the body, suppresses the contraction of the absorbent body in the width direction, and secures the body fluid absorption function.

According to a preferred embodiment, the exterior non-bonded region is provided in a region overlapping the trailing edge of the absorbent body, and the absorbent article is located closer to the skin surface than the absorbent body. It may also have a cover sheet that covers the trailing edge of the absorbent body.

According to this aspect, by covering the rear end edge of the absorbent body with the cover sheet, the rear end edge of the absorbent body is less likely to hit the skin, and irritation to the skin can be suppressed. In addition, by covering the rear end edge of the absorbent body with a cover sheet, it is possible to prevent the body fluid from adhering to the skin even when the body fluid leaks from the absorbent body.

According to a preferred embodiment, the absorbent body is arranged outside both the upright portion that can stand up by contracting in the longitudinal direction and the upright portion outside the upright portion in the longitudinal direction, and the upright portion stands up. An upright leak-proof cuff having a longitudinal joint serving as a base point is provided, and the exterior non-joint region may be arranged outside the upright portion in the longitudinal direction.

According to this aspect, the upright portion is more likely to rise toward the skin side due to the tension applied between the longitudinal joint portions. At this time, since the exterior non-joining region is arranged on the outside in the longitudinal direction from the upright portion, the absorbent main body stands up on the skin side without resisting the tension acting on the upright portion, so that the leak-proof cuff can stand upright. Can be maintained.

According to a preferred embodiment, the absorbent article is disposed on the front exterior and has a front stretchable member that expands and contracts in the width direction, the front exterior being in the rear intermediate region and in the width direction. Adjacent to each other, the pair of side joints have a continuous front intermediate region in the width direction, and the front intermediate region has continuous front elastic members between the pair of side joints. May be placed.

According to this aspect, the region contracted by the front elastic member and the rear elastic member is arranged so as to surround the waist of the wearer. Since the region contracted by the front elastic member and the rear elastic member comes into close contact with the body, it is possible to suppress the slippage of the absorbent article.

According to a preferred embodiment, the front exterior has a front waist region that is adjacent to the front intermediate region and is located anterior to the front intermediate region, and the front waist region is in an elongated state. A front non-stretchable region that does not have the front stretchable member may be arranged.

According to this aspect, the continuous anterior elastic member in the anterior intermediate region suppresses the sliding of the absorbent article, while the anterior non-stretchable region in the anterior waist region adjacent to the anterior intermediate region relaxes the adhesion to the body. However, the deterioration of the wearing feeling can be suppressed. The anterior waist region is located anterior to the anterior intermediate region, above the recess at the lower end of the abdomen and facing the bulge of the abdomen. Since the front non-stretchable region is provided in the front waist region, the front waist region is less likely to shift toward the front intermediate region due to the contraction of the front elastic member, and the slippage of the absorbent article can be suppressed.

According to a preferred embodiment, the absorption core may be arranged in the anterior intermediate region.

According to this aspect, the absorption core can be brought into close contact with the wearer's body by the contraction of the front elastic member in the anterior intermediate region, and the leakage of excrement can be suppressed.

According to a preferred embodiment, the absorbent article is disposed on the front exterior and has a front stretchable member that expands and contracts in the width direction, the front exterior being in the rear intermediate region and in the width direction. Adjacent to each other, the pair of side joints have a front intermediate region continuous in the width direction, and a front non-stretchable region having no front stretchable member in an extended state is arranged in the front intermediate region. May be done.

According to this aspect, the continuous front elastic member in the anterior girth region suppresses the sliding of the absorbent article, while the anterior non-expandable region in the anterior intermediate region relaxes the adhesion to the body and deteriorates the wearing feeling. Can be suppressed.

According to a preferred embodiment, the front non-stretchable region of the front intermediate region may be arranged closer to the inseam region than the front stretchable member of the front intermediate region.

According to this aspect, by providing the front non-stretchable region on the inseam region side of the front stretchable member, it is possible to suppress the absorption core from shrinking in the width direction due to the contraction of the front stretchable member in the front intermediate region. Therefore, the absorption core can be easily applied to the body on the surface, and the body fluid absorption function can be ensured.

(2) Overall Outline of Absorbent 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 parts in which the relationship and ratio of dimensions of the drawings are different from each other.

The absorbent article may be of the pants type. The absorbent article may be a disposable diaper or a shorts-type sanitary napkin. The absorbent article of the embodiment is a pants-type disposable diaper. FIG. 1 is a schematic front view of the absorbent article 10 according to the present embodiment. FIG. 2 is a schematic plan view of the disposable diaper 10 according to the present embodiment. The schematic plan view shown in FIG. 2 shows an stretched state in which the absorbent article 10 is stretched to a state in which wrinkles are not formed in a state where the side joint portion 60 described later is unfolded. FIG. 3 is a cross-sectional view taken along the line AA shown in FIG. 2, FIG. 4 is a cross-sectional view taken along the cross section taken along the line BB shown in FIG. 2, and FIG. 5 is a cross-sectional view taken along the line AA shown in FIG. It is sectional drawing which follows the C cross section.

The absorbent article 10 has a longitudinal direction L and a width direction W that are orthogonal to each other. The longitudinal direction L is defined by the direction extending to the anterior side and the posterior side of the body. In other words, the longitudinal direction L is the direction extending back and forth in the deployed absorbent article 10. Further, the absorbent article 10 has both the longitudinal direction L and the width direction W orthogonal thickness directions.

The absorbent article 10 has a front waist circumference area S1, a rear waist circumference area S2, and an inseam area S3. The front waist circumference area S1 is a region facing the front waist circumference (abdomen) of the wearer. The rear waist circumference area S2 is an area facing the rear waist circumference (back) of the wearer. The inseam area S3 is an area located in the inseam of the wearer and arranged between the front waist area S1 and the rear waist area S2.

As shown in FIG. 1, a side joint portion 60 may be provided in which the end portion of the front waist circumference region S1 in the width direction W and the end portion of the rear waist circumference region S2 in the width direction W are joined. The side joint portion 60 is defined by a portion in which the outer portion of the front waist circumference region S1 and the outer portion of the rear waist circumference region S2 are locked to each other. As shown in FIG. 1, in a state where the side joint 60 is formed, the absorbent article 10 has a pair of waist opening 62 through which the wearer's body is passed and a pair of legs into which the wearer's legs are inserted. The leg circumference opening 66 is formed. The waist circumference opening 62 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.

Here, FIG. 2 shows a state in which the side joint portion 60 is released from the joint and the absorbent article 10 is unfolded. The side joint portion 60 may extend along the longitudinal direction L in each of the front exterior body 20 and the rear exterior body 30. In the pants-type absorbent article, the boundary between the front waist area S1 and the inseam area S3 may be defined by the rear end edge of the side joint 60 provided on the front exterior body 20. Similarly, the boundary between the rear waist circumference area S2 and the inseam area S3 may be defined by the front end edge of the side joint portion 60 provided on the rear exterior body 30. The inseam area S3 may be an area provided with the leg circumference opening 66.

The outer portion in the present invention 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 invention 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 invention 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 edge includes a front edge and a trailing edge, and the outer edge includes a front edge and a trailing edge.

In the present embodiment, the absorbent article 10 may have an exterior body 15 and an absorbent body 40. The exterior body 15 overlaps the absorbent body 40 in the thickness direction. The exterior body 15 may have a front exterior body 20 arranged in the front waist circumference region S1 and a rear exterior body 30 arranged in the rear waist circumference region S2. The front exterior body 20 is an exterior body arranged on the non-skin surface side T2 of the absorbent main body 40 in the front waist circumference region S1. The rear exterior body 30 is an exterior body that is separated from the front exterior body 20 in the longitudinal direction L and is arranged on the non-skin surface side T2 of the absorbent main body 40 in the rear waist circumference region S2.

As shown in FIG. 3, the exterior body 15 may have a cover sheet arranged on the skin surface side T1 of the absorbent body 40. The cover sheets are the rear cover sheet 37 provided on the skin surface side T1 of the absorbent main body 40 in the rear waist circumference area S2 and the front side cover provided on the skin surface side T1 of the absorbent main body 40 in the front waist circumference area S1. It may have a sheet 27 and. The front cover sheet 27 and the rear cover sheet 37 may be made of a sheet such as a non-woven fabric. The front cover sheet 27 may be composed of a portion in which the sheet constituting the front exterior body 20 is folded back to the skin surface side T1, or is composed of a sheet separate from the sheet constituting the front exterior body 20. May be good. Similarly, the rear cover sheet 37 may be composed of a portion in which the sheet constituting the rear exterior body 30 is folded back to the skin surface side T1, or is separate from the sheet constituting the rear exterior body 30. It may be composed of a sheet of.

The front exterior body 20 and the rear exterior body 30 may be made of a sheet such as a non-woven fabric. The front exterior body 20 may have a first front seat 25 and a second front seat 26 located on the non-skin surface side T2 of the first front seat 25. The front exterior body 20 may further include seats other than the first front seat 25 and the second front seat 26. Further, the rear exterior body 30 may have a plurality of sheets. The front exterior body 20 may have a first rear seat 35 and a second rear seat 36 located on the non-skin surface side T2 of the first rear seat 35. The rear exterior body 30 may further include seats other than the first rear seat 35 and the second rear seat 36.

A front elastic member 22 that can be expanded and contracted in the width direction W may be arranged in the front waist circumference area S1, and a rear elastic member 32 that can be expanded and contracted in the width direction W may be arranged in the rear waist circumference area S2. .. The front elastic member 22 may be arranged between the first front seat 25 and the second front seat 26, and the rear elastic member 32 is between the first rear seat 35 and the second rear seat 36. May be placed. The front elastic member 22 and the rear elastic member 32 may be composed of, for example, a rubber thread that can be expanded and contracted in the width direction W, or a sheet that can be expanded and contracted in the width direction W. Instead, the front stretchable member 22 and the rear stretchable member 32 may be composed of, for example, the exterior body 15 itself made of a stretchable sheet. The front elastic member 22 and the rear elastic member 32 of the present embodiment are made of rubber thread.

The absorbent body 40 is arranged at least in the inseam area S3 and the rear waist circumference area S2. The absorbent body 40 may be arranged over the front waist area S1, the rear waist area S2, and the inseam area S3. The absorbent main body 40 is configured as a separate body from the front exterior body 20 and the rear exterior body 30, and is joined to the front exterior body 20 and the rear exterior body 30 in the front waist circumference area S1 and the rear waist circumference region S2, respectively. You can.

The absorbent body 40 includes at least an absorbent core 50. The absorption core 50 may contain, for example, ground pulp or a highly absorbent polymer (SAP), or a mixture thereof. The absorption core 50 is arranged at least in the inseam area S3 and the rear waist circumference area S2. Preferably, the absorption core 50 may extend from the front girth region S1 to the rear girth region S2 in the longitudinal direction L. The absorption core 50 may be covered with a core wrap separate from the absorption core. As the core wrap, tissue can be exemplified. In the present embodiment, the core wrap is omitted for convenience of drawing. Further, as shown in FIGS. 3 and 4, the absorbent main body 40 is located on the skin surface side T1 of the absorbent core 50. It has a skin surface sheet 42A, a liquid-impermeable sheet 41 located on the non-skin surface side T2 of the absorption core 50, and a main body sheet 42B arranged on the non-skin surface side T2 of the liquid impermeable sheet 41. You may be.

The absorbent main body 40 of the present embodiment is formed by the skin surface sheet 42A, the liquid permeable sheet 41, and the main body sheet 42B from the skin surface side T1 to the non-skin surface side T2 in the region in front of the absorption core 50. They are arranged in order. Further, in the region overlapping the absorption core 50, the skin surface sheet 42A, the absorption core 50, the liquid permeable sheet 41, and the main body sheet 42B are arranged in this order from the skin surface side T1 to the non-skin surface side T2. .. The skin surface sheet 42A and the liquid impermeable sheet 41 may be arranged with the absorption core 50 sandwiched in the thickness direction T. The liquid-impermeable sheet 41 may be liquid-impermeable, and may be made of, for example, a film. The skin surface sheet 42A may be liquid-permeable, and may be made of, for example, a non-woven fabric. The main body sheet 42B may be made of, for example, a non-woven fabric. As shown in FIG. 2, the skin surface sheet 42A includes a center sheet 42A1 that covers the center of the absorption core 50 in the width direction W, and a side sheet 42A2 that covers the outer portion of the center sheet 42A1 on the skin surface side T1 of the center sheet 42A1. And may have.

The absorbent body 40 may have a pair of leakproof cuffs 46. The pair of leakage-proof cuffs 46 extend between the front waist circumference area S1 and the rear waist circumference area S2, and are arranged on both sides of the center of the absorbent article 10 in the width direction W. The pair of leak-proof cuffs 46 are configured to stand up toward the wearer's skin.

The leak-proof cuff 46 may have a leak-proof joint (46A, 46B) and an upright portion 46C. The leak-proof joint portion is a portion for joining the side sheet 42A2 and the sheet (center sheet 42A1, liquid permeable sheet 41 and main body sheet 42B) arranged on the non-skin surface side T2 of the side sheet 42A2. The leak-proof joint may be made of an adhesive. The leak-proof joint has a longitudinal joint 46A arranged outside the upright portion 46C in the longitudinal direction L and a width joint 46B arranged outside the upright portion 46C in the width direction W. Good. FIG. 2 shows the range of the standing portion 46C in the longitudinal direction L. The leak-proof joint has a longitudinal joint 46A located on both outer sides of the upright portion 46C in the longitudinal direction. The leak-proof joint portion may further have a width joint portion 46B located outside the width direction W with respect to the upright portion 46C. As shown in FIG. 4, the upright portion 46C may be composed of a side sheet 42A2 and a side elastic member 46D provided on the side sheet 42A2. The upright portion 46C can be uprighted by the side elastic member 46D contracting in the longitudinal direction L. The upright portion 46C is provided on the inner portion of the side sheet 42A2 in the width direction W, is not joined to the center sheet 42A1, and can stand up from the center sheet 42A1. The longitudinal joint portion 46A and the width joint portion 46B are portions that do not stand up. The leakage-proof cuff 46 is configured to rise from the longitudinal joint portion 46A and the width joint portion 46B toward the upright portion 46C.

The absorbent article 10 has a bonded region and a non-bonded region. The joined region is configured to have higher rigidity than the non-joined region and is less likely to be deformed. The non-joint region is configured to have lower rigidity and more easily deform than the joint region. The joining regions include an exterior joining region R31 in which the exterior body 15 and the absorbent body 40 are joined, a main body sheet joining region R32 in which the sheets of the absorbent main body 40 are joined together, and an exterior sheet in which the sheets of the exterior body 15 are joined together. The joint region R33 and the cover joint region R34 in which the cover sheet is joined to the exterior body 15 or the absorbent body 40 are included. The non-joining region includes the exterior non-joining region R21 in which the exterior body 15 and the absorbent body 40 are not joined, the main body sheet non-joining region R22 in which the sheets of the absorbent main body 40 are not joined, and the sheets of the exterior body 15. The unbonded exterior sheet non-joined region R23 and the cover non-joined region R24 in which the cover sheet is not joined to the exterior body 15 and the absorbent body 40 are included. The non-bonded region in the present invention includes not only the region to which the adhesive is not applied, but also the region to which the adhesive is slightly applied but the members are not adhered to each other via the adhesive. .. Further, the bonding region in the present invention includes not only the region to which the adhesive is applied but also the region surrounded by the region to which the adhesive is applied (the region surrounded by the curve of the spiral coating). The area surrounded by the area to which the adhesive is applied does not have to be surrounded by the entire circumference, and may be an area surrounded by at least half or more of the entire circumference.

The exterior non-joining region R21 may include a region in which the absorbent main body 40 and the front exterior body 20 are not joined, and a region in which the absorbent main body 40 and the rear exterior body 30 are not joined. The exterior joint region R31 is a region where the absorbent main body 40 and the exterior body 15 are joined. The exterior non-joining region R21 and the exterior joining region R31 are adjacent to each other in the longitudinal direction L. In the region facing the absorbent body 40 and the exterior body 15, the exterior non-bonding region R21 and the exterior bonding region R31 may be alternately provided in the longitudinal direction in the same layer in the thickness direction T. The exterior non-joining region R21 may be provided at the rear end edge of the region facing the absorbent body 40 and the exterior body 15 and the front end edge of the region. In the cross section shown in FIG. 4, exterior bonding regions R31 are provided on both sides in the width direction with respect to the exterior non-bonding region R21. In the cross section shown in FIG. 5, the exterior bonding region R31 is not provided, and the exterior non-bonding region R21 is continuous in the width direction W.

The main body sheet non-bonding region R22 may include a region where the liquid impermeable sheet 41 and the main body sheet 42B are not bonded, and a region where the liquid impermeable sheet 41 and the skin surface sheet 42A are not bonded. A main body sheet non-joining region R22 may be provided in a region overlapping the rear end edge 40R of the absorbent main body 40 and the front end edge 40F of the absorbent main body 40. The main body sheet non-joining region R22 and the main body sheet joining region R32 may be adjacent to each other in the longitudinal direction L. The main body sheet bonding region R32 may be provided on the inseam region S3 side of the main body sheet non-bonding region R22 in the same layer in the thickness direction T.

The exterior sheet non-bonded region R23 is an region in which the sheets constituting the exterior body 15 are not bonded to each other. In the region overlapping the rear edge of the front exterior body 20 and the front edge of the front exterior body 20, the region overlapping the rear edge of the rear exterior body 30 and the front edge of the rear exterior body 30, the exterior sheet non-joining region R23 May be provided. The exterior sheet joining region R33 and the exterior sheet joining region R33 may be adjacent to each other in the longitudinal direction L. The exterior sheet non-bonding region R23 and the exterior sheet bonding region R33 may be provided alternately in the longitudinal direction L in the same layer in the thickness direction T.

The cover non-joining region R24 includes a region where the absorbent main body 40 and the front cover sheet 27 are not joined, and a region where the absorbent main body 40 and the rear cover sheet 37 are not joined. A cover non-joining region R24 is provided in a region overlapping the rear edge of the front cover sheet 27 and the front edge of the front cover sheet 27, and a region overlapping the rear edge of the rear cover sheet 37 and the front edge of the rear cover sheet 37. It may be provided. The cover non-joining region R24 and the cover joining region R34 may be adjacent to each other in the longitudinal direction L. The cover non-bonding region R24 and the cover bonding region R34 may be provided alternately in the longitudinal direction L in the same layer in the thickness direction T.

As shown in FIGS. 2 and 6, the rear waist circumference region S2 may be provided with a plurality of regions indicated by the ratio of the rear waist circumference region S2 to the total length in the longitudinal direction L. Specifically, the rear waist circumference region S2 includes a rear waist region R11 located 0 to 50% ahead of the total length of the rear waist circumference region S2 in the longitudinal direction L from the rear end edge S2R of the rear waist circumference region S2, and the rear waist circumference. The rear intermediate region R12 located 50 to 80% ahead of the total length of the longitudinal direction L of the rear waist circumference region S2 from the rear end edge S2R of the region S2, and the longitudinal direction of the rear waist circumference region S2 from the rear end edge S2R of the rear waist circumference region S2. It has a posterior crotch side region R13 located 80 to 100% anterior to the total length of L.

The front waist circumference region S1 may be provided with a plurality of regions indicated by a ratio of the front waist circumference region S1 to the total length in the longitudinal direction L. The front waist circumference region S1 includes a rear intermediate region R12, a front intermediate region F12 adjacent to the width direction W, a front waist region F11 arranged on the front side of the front intermediate region F12, and a rear side of the front intermediate region F12. It has an arranged anterior crotch side region F13. The front waist region F11, the front intermediate region F12, and the front crotch side region F13 are continuous in the width direction W between the pair of side joints 60, and are adjacent to each other in the longitudinal direction L. The length of the front intermediate region F12 in the longitudinal direction L is the same as the length of the rear intermediate region R12 in the longitudinal direction L in the portion adjacent to the side joint 60. The front waist region F11 is a region between the front end edge S1F of the front waist circumference region S1 and the front intermediate region F12. The front crotch side region F13 is a region between the rear end edge S1R of the front waist circumference region S1 and the front intermediate region F12. FIG. 6 is a view showing a plurality of regions F11 to F13 and R11 to R13 in the plan view of the unfolded state of the absorbent article shown in FIG. A plurality of regions F11 to F13 and R11 to R13 are shaded. The rear waist region R11, the rear intermediate region R12, and the rear crotch side region R13 are continuous in the width direction W between the pair of side joints 60 and are adjacent to each other in the longitudinal direction L. In addition, each region in this embodiment is defined by the ratio to the total length of the absorbent article in the extended state.

Next, the wearing state of the absorbent article will be described. 7 and 8 are diagrams schematically showing a state in which the absorbent article is attached to the wearer. FIG. 7 is a view showing a state seen from the side surface, and FIG. 8 is a view showing a state seen from the back side. In FIGS. 7 and 8, the line of the wearer's body is shown by the alternate long and short dash line BL. As shown in FIG. 7, a bulge of the buttocks is formed on the back side of the wearer. In general, the shape of the wearer's dorsal side bulges outward at the apex of the buttocks, and bulges less than the apex of the buttocks above the apex of the buttocks. 7 and 8 show the positions of the vertices X of the buttocks.

As a result of diligent studies by the applicant, it was found that the posterior intermediate region R12 is arranged so as to face the upper side of the apex of the buttocks. The bulging part of the buttocks above the apex of the buttocks has a shorter waist circumference than the apex of the buttocks, and the upper part of the bulging part of the buttocks has a shorter waist circumference. In the rear intermediate region R12, the rear elastic member 32 in the extended state is continuously arranged. At least a part of the rear elastic member 32 provided in the rear intermediate region R12 may be continuously arranged in the pair of side joints 60. The rear side elastic member 32 that is continuous in the pair of side joints 60 is configured to be expandable and contractible in the width direction W. Due to the contraction of the rear elastic member 32, the absorbent article is brought into close contact with the upper side of the apex of the buttocks. Since the region having a waist circumference shorter than the apex of the buttocks is in close contact with the body, the absorbent article is less likely to shift in the longitudinal direction, and the sliding of the absorbent article can be suppressed.

Further, the rear non-stretchable region R15 is provided in the rear waist circumference region S2, and the rear non-stretchable region R15 overlaps the absorption core 50 in the rear crotch side region R13. At least a part of the rear non-stretchable region R15 may overlap the absorption core 50. Therefore, it is possible to prevent the absorption core 50 from being excessively contracted in the width direction W by the rear elastic member 32, secure the length of the absorption core 50 in the width direction W, and secure the body fluid absorption function.

By ensuring the fit to the body by the rear intermediate region R12, even if the rear non-stretchable region R15 is provided in the rear crotch side region R13, the fit in the entire rear waist circumference region S2 is secured, and the absorbent article 10 is prevented from slipping down. Can be suppressed. Therefore, it is possible to secure the absorption function of the absorption core 50 in the rear waist circumference region S2 and suppress the displacement of the absorbent article at the same time.

The rear non-stretchable region R15 is a region that does not have the rear elastic member 32 in the extended state, and the region in which the rear elastic member 32 is not arranged and the rear elastic member 32 in the non-extended state are arranged. It is a concept that includes the area. The rear elastic member 32 of the present embodiment is arranged in an extended state over the entire width direction W of the rear waist circumference region S2 at the time of manufacturing the absorbent article. A plurality of the rear elastic members 32 in the extended state are provided at intervals in the longitudinal direction L over the entire area of the rear waist circumference region S2 in the longitudinal direction L. In the rear crotch side region R13, at least a part of the rear elastic member 32 is cut at a region overlapping the absorption core 50, and is cut back to the outer side of the rear waist circumference region S2. The region where the cut-back rear elastic member 32 is arranged is the region where the posterior elastic member 32 is arranged in the non-extended state, and constitutes the posterior non-expandable region R15. In FIG. 2, only the rear stretchable member 32 arranged in the stretched state is shown, and the region between the rear stretchable members 32 in the width direction W constitutes the rear non-stretchable region R15. In FIG. 2, the rear non-stretchable region R15 is shown with diagonal lines.

The rear non-stretchable region R15 may be provided in a central portion including the center of the rear waist circumference region S2 in the width direction W. Specifically, the rear non-stretchable region R15 may be provided at least in the center of the region obtained by dividing the absorption core 50 into three equal parts in the width direction W. Further, the rear stretchable member 32 in the stretched state (expandable) may be arranged outside the rear non-stretchable region R15 in the width direction W. The outer edge of the posterior non-stretchable region R15 may be located inside the outer edge of the absorption core 50. According to this configuration, the adhesiveness of the outer portion of the absorption core 50 can be enhanced by the rear elastic member 32, and the leakage of body fluid can be suppressed while ensuring the length W in the width direction of the absorption core 50.

The rear non-stretchable region R15 may be provided at a portion extending rearward from the front end edge of the rear waist circumference region S2 in the longitudinal direction. The rear non-stretchable region R15 may be arranged only in the rear crotch side region R13, or may be arranged so as to straddle the rear intermediate region R12. The trailing edge of the posterior non-stretchable region R15 may be located anterior to the posterior waist region R11. The stretched rear elastic member 32 of the present embodiment is continuous between the pair of side joints 60 in the rear waist region R11 in the entire longitudinal direction and in the rear portion in the rear intermediate region R12. .. The rear elastic member 32 in the extended state is arranged apart from each other in the width direction W in the front portion in the rear intermediate region R12 and the rear crotch region R13.

A rear elastic member 32 continuous between the pair of side joints 60 may be arranged on the posterior side of the posterior non-stretchable region R15 of the posterior intermediate region R12. The rear elastic member 32 may overlap the absorption core 50. The rear elastic member 32 can enhance the adhesion of the rear end portion of the absorption core 50 and suppress rear leakage.

The rear intermediate region R12 may be provided with an exterior non-joining region R21. In the exterior non-bonding region R21, since the rear exterior body 30 is not bonded to the absorbent body 40, the contraction force of the rear elastic member 32 is difficult to be transmitted to the absorbent body 40. Therefore, in the rear intermediate region R12, the contraction force of the rear elastic member 32 is less likely to act on the absorbent body 40. The contraction of the absorbent body 40 in the width direction W can be suppressed, and the body fluid absorption function can be ensured.

The exterior non-bonding region R21 may be provided in a region overlapping the absorption core 50. The exterior non-joining region R21 may be provided in a region overlapping the absorption core 50 in the rear intermediate region R12, or may be provided in a region overlapping the absorption core 50 in the rear crotch side region R13. According to this configuration, the contraction force of the rear elastic member 32 is less likely to act on the absorbent body in the region overlapping the absorbent core 50. Therefore, the contraction of the absorption core 50 in the width direction W can be effectively suppressed, the absorption core 50 can be easily applied to the body on the surface, and the body fluid absorption function can be ensured. Preferably, in the rear intermediate region R12, the region where the exterior non-joining region R21 and the absorption core 50 overlap may be provided over the entire width direction W of the absorption core 50, and more preferably, the width direction of the absorbent body 40. It may be provided in the entire area of W.

The exterior non-joining region R21 may be provided in a region overlapping the rear elastic member 32 in the extended state. The contractile force of the rear elastic member 32 is less likely to act on the absorbent body. Absorption It is possible to suppress the contraction of the main body in the width direction W and secure the body fluid absorption function. Preferably, the exterior non-joining region R21 may be provided in a region that overlaps with the rear elastic member 32 in the extended state and overlaps with the absorption core 50. While suppressing the absorption core 50 from contracting in the width direction W, the absorption core 50 can be pressed toward the wearer side, and rear leakage can be suppressed.

The exterior non-bonding region R21 may be continuously provided in the width direction W over the entire width direction W of the absorbent main body 40. That is, as shown in FIG. 5, the exterior bonding region R31 may not be provided and the exterior non-bonding region R21 may be continuous in an arbitrary cross section along the width direction W. According to this configuration, the exterior body 15 is less likely to be restrained by the absorbent body 40, and the exterior body 15 easily expands and contracts in the width direction. Therefore, when the wearer stretches the exterior body 15 in the width direction at the time of wearing, the exterior body 15 is easily stretched, and the wearer's body is easily covered by the exterior body 15. Further, since the exterior body 15 is easily expanded and contracted, it can be flexibly deformed to the movement of the body when worn, and the wearing feeling is improved. Preferably, in the region where the exterior non-joining region R21 is continuous in the width direction W over the entire width direction W of the absorbent main body 40, the rear elastic member 32 in the extended state is continuous in the width direction W. It is preferable that they are arranged. The exterior body 15 tends to expand and contract in the width direction.

The exterior non-joining region R21 is provided in a region overlapping the rear end edge 40R of the absorbent main body 40, and the rear end edge 40R of the absorbent main body 40 may be covered with the rear cover sheet 37. By covering the rear end edge 40R of the absorbent main body 40 with the rear cover sheet 37, the rear end edge 40R of the absorbent main body 40 is less likely to hit the skin, and irritation to the skin can be suppressed. In addition, by covering the rear end edge 40R of the absorbent body 40 with the rear cover sheet 37, even if the body fluid leaks from the absorbent body 40, it is possible to prevent the body fluid from adhering to the skin. The rear cover sheet 37 of the present embodiment covers the skin surface side of the rear end edge 40R of the absorbent main body 40 over the entire width direction of the absorbent main body 40.

The exterior non-joining region R21 may be arranged outside (rear side) in the longitudinal direction with respect to the upright portion 46C of the leakage-proof cuff 46. The absorbent body 40 in the exterior non-bonded region R21 is not bonded to the exterior body 15 and easily stands up on the skin side. Further, the upright portion 46C of the leak-proof cuff 46 stands up on the skin side with the longitudinal joint portion 46A as a base point. At this time, the upright portion 46C is more likely to stand up toward the skin side due to the tension applied between the longitudinal joint portions 46A. At this time, since the exterior non-joining region R21 is arranged outside the standing portion 46C in the longitudinal direction, the absorbent main body 40 stands up on the skin side without resisting the tension acting on the standing portion 46C, and the leakage-proof cuff 46 Can maintain the uprightness of. In the rear waist circumference region S2, the exterior non-joining region R21 may be arranged outside the upright portion 46C in the longitudinal direction, but preferably, the exterior non-joining region S1 and the rear waist circumference region S2 both have the exterior non-joining region. The region R21 may be arranged outside the upright portion 46C in the longitudinal direction. The uprightness of the leak-proof cuff 46 can be further maintained.

In the front intermediate region F12, the front elastic member 22 may be continuously arranged between the pair of side joints 60. The front intermediate region F12 is adjacent to the rear intermediate region R12 in the width direction W via the side joint 60. As described above, in the rear intermediate region R12, the rear elastic member 32 is continuously arranged between the pair of side joints 60. The area contracted by the front elastic member 22 and the rear elastic member 32 is arranged so as to surround the wearer's waist. The region contracted by the front elastic member 22 and the rear elastic member 32 comes into close contact with the body, so that the absorbent article 10 can be prevented from slipping down. Further, by suppressing the slippage in the posterior intermediate region R12 and the anterior intermediate region F12 by bringing them into close contact with the body, relatively other regions (anterior waist region, posterior waist region R11, anterior crotch side region, and posterior crotch side) The adhesion of the region R13) can be suppressed. By not keeping the entire absorbent article in close contact with the body, it is possible to reduce the discomfort when worn. That is, it is possible to suppress the slippage of the absorbent article while suppressing the deterioration of the wearing feeling.

Further, as shown in FIG. 7, a recess extending in the width direction W is generally formed at the lower end of the abdomen on the ventral side of the wearer. The central recess in the width direction W of the wearer's abdomen is located at the lower end of the abdomen. As a result of diligent studies by the applicant, it was found that the anterior intermediate region F12 is arranged so as to face the recess at the lower end of the abdomen. Due to the contraction of the front elastic member 22 of the front intermediate region F12, the front intermediate region F12 comes into close contact with the dent of the body, and the absorbent article is less likely to slip down.

In the front waist region F11, a front non-stretchable region F15 having no front stretchable member 22 in an extended state may be arranged. The continuous front elastic member 22 in the anterior intermediate region F12 suppresses the sliding of the absorbent article, while the anterior non-stretchable region F15 in the anterior waist region F11 adjacent to the anterior intermediate region F12 relaxes the adhesion to the body. , Deterioration of wearing feeling can be suppressed. Further, the front waist region F11 is located on the front side of the front intermediate region F12, is located above the recess at the lower end of the abdomen, and is arranged so as to face the bulge of the abdomen. Since the front non-stretchable region F15 is provided in the front waist region F11, the front waist region F11 is less likely to slip toward the front intermediate region F12 due to the contraction of the front elastic member 22, and the slip of the absorbent article is suppressed. it can.

The front non-stretchable region F15 is a region that does not have the front stretchable member 22 in the stretched state, and is a region in which the front stretchable member 22 is not arranged and a region in which the front stretchable member 22 is arranged in the non-stretched state. , Is a concept that includes. The front elastic member 22 of the present embodiment is arranged in an extended state over the entire width direction W of the front waist circumference region S1 at the time of manufacturing the absorbent article. A plurality of front elastic members 22 in the extended state are provided at intervals in the longitudinal direction L over the entire area of the front waist circumference region S1 in the longitudinal direction L. In the front crotch side region F13, at least a part of the front side elastic member 22 is cut and cut back to the outer side of the front waist circumference region S1. In FIG. 2, only the front elastic member 22 arranged in the extended state is shown, and the region between the front elastic members 22 in the width direction W and the region outside the front elastic member 22 in the longitudinal direction are shown. The front non-stretchable region F15 is formed. In FIG. 2, the front non-stretchable region F15 is shown with diagonal lines.

The front non-stretchable region F15 may be provided in a central portion including the center of the front waist circumference region S1 in the width direction W. Specifically, the front non-stretchable region F15 may be provided at least in the center of the region obtained by dividing the absorption core 50 into three equal parts in the width direction W. Further, the front stretchable member 22 in the stretched state (stretchable) may be arranged outside the front non-stretchable region F15 in the width direction W. The outer edge of the anterior non-stretchable region F15 may be located inside the outer edge of the absorption core 50. According to this configuration, the front non-stretchable region F15 can enhance the adhesion of the outer portion of the absorption core 50, and can suppress the leakage of body fluid while ensuring the length W in the width direction of the absorption core 50.

The front non-stretchable region F15 may be provided over the entire width direction of the portion extending from the front end edge of the front waist circumference region S1 to the rear side, and the entire width direction of the portion extending from the rear end edge of the front waist circumference region S1 to the front side. .. The front non-stretchable region F15 may be continuously provided over the entire width direction W in the front crotch side region F13 and the front waist region F11. The front elastic member 22 in the extended state of the present embodiment is arranged apart from each other in the width direction W in the front waist region F11 and the front crotch side region F13, and a pair of side joints in the front intermediate region F12. It is continuous between 60.

A front non-stretchable region F15 is arranged in the front intermediate region F12. It is sufficient that the front non-stretchable region F15 is provided in at least a part of the front intermediate region F12, and in the embodiment, the front non-stretchable region F15 is arranged in the center of the front intermediate region F12 in the width direction W. The front stretchable member 22 in the stretched state is arranged outside the front non-stretchable region F15 in the width direction W. Further, in the front intermediate region, the front non-stretchable region F15 may be arranged on the inseam region side of the front stretchable member 22 continuous in the width direction W between the pair of side joints 60. By providing the front non-stretchable region F15 on the inseam region side of the front stretchable member, it is possible to prevent the absorption core 50 from shrinking in the width direction W due to the contraction of the front stretchable member 22 in the front intermediate region F12. Therefore, the absorption core 50 can be easily applied to the body surface, and the body fluid absorption function can be ensured.

The absorption core 50 may be arranged in the front intermediate region F12. The absorption core 50 may be arranged in the front intermediate region F12 and the front crotch side region F13. By contracting the front elastic member in the front intermediate region F12, the absorption core 50 can be brought into close contact with the wearer's body, and leakage of excrement can be suppressed.

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 defined by the claims. Therefore, the description of the present specification is for the purpose of exemplification 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 while ensuring the absorption function of the absorption core.

10 Absorbent article 20 Front exterior body 22: Front elastic member 27: Front cover sheet (cover sheet)
30 Rear exterior body 32: Rear elastic member 37: Rear cover sheet (cover sheet)
40: Absorbent body 46: Leakage-proof cuff 46A Longitudinal joint 50: Absorption core 60: Side joint R11: Rear waist region R12: Rear intermediate region R13: Rear crotch side region R15: Rear non-stretchable region F11: Front waist region F12: Front intermediate region F13: Front crotch side region F15: Front non-stretchable region R21: Exterior non-joining region S1: Front waist circumference area S2: Rear waist circumference region S3: Inseam area L: Longitudinal direction W: Width direction

Claims (11)

In the longitudinal and width directions that are orthogonal to each other,
An absorbent body with an absorbent core located at least in the inseam and rear girth areas,
A rear exterior body that overlaps the absorbent body in the thickness direction and is arranged in the rear waist circumference area.
The front exterior body, which overlaps the absorbent body in the thickness direction and is arranged in the front waistline area,
A rear elastic member arranged on the rear exterior body and expanding and contracting in the width direction,
An absorbent article comprising a pair of side joints in which the outer side portion of the front exterior body in the width direction and the outer portion of the rear exterior body in the width direction are joined.
The rear waist circumference region includes a rear intermediate region located 50 to 80% ahead of the total length of the rear waist circumference region in the longitudinal direction from the rear end edge of the rear waist circumference region, and the rear end edge of the rear waist circumference region. It has a posterior crotch side region located 80 to 100% anterior to the total length of the waist circumference region in the longitudinal direction.
The absorption core is arranged in the posterior intermediate region and the posterior crotch side region.
In the posterior crotch side region, a posterior non-stretchable region having no extended posterior elastic member is arranged so as to overlap the absorption core.
An absorbent article in which the rear elastic member is continuously arranged between the pair of side joints in the rear intermediate region. The absorbent article according to claim 1, wherein the rear intermediate region is provided with an exterior non-bonded region in which the absorbent main body and the rear exterior body are not bonded. The absorbent article according to claim 2, wherein the exterior non-bonded region is provided in a region overlapping the absorbent core. The absorbent article according to claim 2 or 3, wherein the exterior non-joint region overlaps with the rear elastic member which is continuous between the pair of side joints. The exterior non-bonded region is provided in a region overlapping the trailing edge of the absorbent body.
The item according to any one of claims 2 to 4, wherein the absorbent article is arranged on the skin surface side of the absorbent body and has a cover sheet covering the trailing edge of the absorbent body. Absorbent article. The absorbent main body has an upright portion that can stand up by contracting in the longitudinal direction, and a longitudinal joint portion that is arranged outside both of the upright portions in the longitudinal direction and serves as an upright base point of the upright portion. Equipped with an orthostatic leak-proof cuff with,
The absorbent article according to any one of claims 2 to 5, wherein the exterior non-bonded region is arranged outside the upright portion in the longitudinal direction. The absorbent article is disposed on the front exterior body and has a front stretchable member that stretches in the width direction.
The front exterior body has a front intermediate region adjacent to the rear intermediate region in the width direction and continuous in the width direction between the pair of side joints.
The absorbent article according to any one of claims 1 to 6, wherein the front elastic member is continuously arranged between the pair of side joints in the front intermediate region. The front exterior has a front waist region that is adjacent to the front intermediate region and is located anterior to the front intermediate region.
The absorbent article according to claim 7, wherein a front non-stretchable region having no stretchable front stretchable member is arranged in the front waist region. The absorbent article according to claim 7 or 8, wherein the absorbent core is arranged in the front intermediate region. The absorbent article is disposed on the front exterior body and has a front stretchable member that stretches in the width direction.
The front exterior body has a front intermediate region adjacent to the rear intermediate region in the width direction and continuous in the width direction between the pair of side joints.
The absorbent article according to any one of claims 1 to 9, wherein a front non-stretchable region having no stretchable front stretchable member is arranged in the front intermediate region. The absorbent article according to claim 10, wherein the front non-stretchable region of the front intermediate region is arranged on the inseam region side of the front stretchable member of the front intermediate region.

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