TW201526883A - Absorbent article - Google Patents

Abstract

This absorbent article, which has a lengthwise direction and a widthwise direction that intersects the lengthwise direction, includes: an absorbent body that is provided along the lengthwise direction and absorbs waste; an abdomen-side band member that is provided along the widthwise direction, and is fixed at the widthwise center thereof to one end of the absorbent body in the lengthwise direction while covering said end from the non-skin-side of the absorbent body; and a back-side band member that is provided along the widthwise direction as a separate member from the abdomen-side band member, and is fixed at the widthwise center thereof to the other end of the absorbent body in the lengthwise direction while covering said other end from the non-skin-side of the absorbent body.; Elastic members that are expandable along the widthwise direction are respectively provided to the abdomen-side band member and the back-side band member. The abdomen-side band member includes abdomen-side-band-member side edge sections on both widthwise side edges thereof, the back-side band member includes back-side-band-member side edge sections on both widthwise side edges thereof, and the absorbent article is formed in a cylindrical manner by joining the abdomen-side-band-member side edge sections and the back-side-band-member side edge sections. The absorbent body includes an absorbent core obtained by laminating liquid-absorbent materials, and a liquid-impermeable leakage prevention sheet that covers the absorbent core from the non-skin side of the absorbent core.; The absorbent core includes a narrow section between an abdomen-side end section and a back-side end section, with the width of the narrow section in the widthwise direction being narrower than that of the abdomen-side end section and the back-side end section. The positions of the back-side-band-member side edge sections and the narrow section at least partially overlap in the lengthwise direction.

Description

Absorbent article

The present invention relates to absorbent articles.

As an absorbent article for absorbing excrement, a three-piece disposable disposable diaper is well known. The disposable disposable diaper of the three-piece type is generally configured to have an absorbent body attached to the wearer's crotch for absorbing excrement, an abdomen side band member covering the wearer's abdomen side, and A back side strap member that covers the back side of the wearer. In the three-piece disposable disposable diaper, the invention discloses a paper diaper in which the intermediate portion in the longitudinal direction of the absorbent body is reduced in diameter and the shape of the absorbent body is changed to a slightly hourglass clock shape (for example, , Patent Document 1).

[prior technical literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-253285

In the disposable diaper which is used for the absorbent body having a slightly hourglass clock shape as disclosed in Patent Document 1, it becomes difficult to hinder the wearer's foot before and after the operation. Further, by adjusting the reduced diameter portion, when the foot is moved forward and backward, the force applied to the absorbent body can be reduced, and the deterioration of the fit can be suppressed.

However, since the absorbent body has a reduced diameter portion, there is a problem that a gap is likely to occur between the reduced diameter portion and the wearer's foot. When such a gap is generated, there is a possibility that excretion leaks from the gap. In particular, when the wearer is a baby, most of them wear a disposable diaper in a sleeping position, and most of them bend in front of the foot when in a sleeping position. Therefore, a gap is easily generated on the buttock side, and the excrement is easily leaked. The problem arises.

The present invention has been developed in view of the above problems, and an object of the invention is to provide a disposable diaper having an absorbent body having a reduced diameter portion in an intermediate portion in the longitudinal direction, which can suppress the wearing of the disposable diaper. A gap is created between the user's foot and the absorbent body.

In order to achieve the above object, an absorbent article has an absorbent article having a longitudinal direction and a transverse direction crossing the longitudinal direction, and is characterized in that it is provided along the longitudinal direction to absorb excrement. The absorbent body is provided in the lateral direction of the absorbent body, and covers the one end portion of the absorbent body in the longitudinal direction while fixing the central portion in the lateral direction to the abdominal side band of the one end portion. And a member different from the abdominal side belt member, which is disposed along the lateral direction and is different from the absorbent body The skin side is covered with the other end portion of the absorbent body in the longitudinal direction, and the center portion in the lateral direction is fixed to the back side belt member at the other end portion, and the abdominal side belt member and the back side belt member are disposed, respectively. An elastic member that expands and contracts in the lateral direction, the abdominal side belt member has a side edge portion of the abdominal side belt member on both side edges in the lateral direction, and the back side belt member has a back side belt on both side edges in the lateral direction The member side edge portion is formed by molding the absorbent article in a tubular shape by joining the side edge portion of the abdominal side belt member and the side edge portion of the back side belt member, and the absorbent body is formed by laminating a liquid absorbing material. The absorbent core material and the liquid-impermeable leakage preventing sheet covering the absorbent core material from the non-skin side of the absorbent core material, wherein the absorbent core member is on the side of the abdomen and the side of the back side Between the portions, the reduced diameter portion having a width in the lateral direction that is narrower than the front end portion and the back end portion, and at least a portion of the side edge portion of the back side belt member The longitudinal direction of the aforementioned reduced diameter portion is repeated.

Other features of the present invention will become more apparent from the description of the specification and drawings.

According to the present invention, it is possible to suppress a gap between the wearer's foot and the absorbent body in the three-sheet type diaper having the absorbent body having the reduced diameter portion in the intermediate portion in the longitudinal direction.

1‧‧‧paper diapers (absorbent articles)

1HB‧‧‧waist opening

1HL‧‧‧foot opening

10‧‧‧Absorbable ontology

10ea‧‧‧ end

10eb‧‧‧End

10es‧‧‧ end

10p‧‧‧section

11‧‧‧Absorbent core material

11a‧‧‧After the abdomen

11b‧‧‧Back side of the back

11c‧‧‧Reducing section

13‧‧‧Surface sheet member

15‧‧‧Back sheet member

15a‧‧‧ leakproof sheet

15b‧‧‧Outer sheet

15bf‧‧‧ highlight

15bg‧‧‧return part

17‧‧‧foot elastic members

18‧‧‧LSG elastic members

19‧‧‧ Foot-assisted elastic members

30a‧‧‧Abdominal side strap members

30ac‧‧‧Central Department

30ac2‧‧‧ part

30ae‧‧‧Side side part of the abdominal side member

30ae2‧‧‧End

30b‧‧‧Back side belt members

30bc‧‧‧Central Department

Section 30bc2‧‧‧

30be‧‧‧back side belt member side edge

30be2‧‧‧ end

31‧‧‧ Non-woven

32‧‧‧ Non-woven

35‧‧‧Flexible components

35a‧‧‧Abaxial side with elastic members

35b‧‧‧Back side elastic members

40‧‧‧Illustrated sheet

50‧‧‧Reprocessing tape

AU‧‧‧ upper area

AD‧‧‧ lower area

ADc‧‧‧ Central Department

Central part of ADcc‧‧‧

End of ADce‧‧

ADe‧‧‧ part

LG‧‧‧Foot wrinkles

LSG‧‧‧Three-dimensional wrinkles (leak-proof wall)

LSGb‧‧‧ base end

LSGf‧‧‧ free end part

Fig. 1 is a schematic perspective view of a disposable disposable diaper (paper diaper 1) according to the present embodiment.

Fig. 2 is a schematic plan view of the same diaper 1 as seen from the skin side.

Fig. 3 is a schematic plan view of the same diaper 1 as seen from the non-skin side.

4A is a cross-sectional view taken along line A-A and a cross-sectional view taken along line C-C of FIG. 2, and FIG. 4B is a cross-sectional view taken along line B-B of FIG. 2.

Fig. 5 is a view for explaining the positional relationship between the reduced diameter portion of the absorbent core member 11 of the present embodiment and the back side belt member 30b.

Fig. 6 is a view for explaining the positional relationship between the reduced diameter portion of the absorbent core member 11 of the comparative example and the back side belt member 30b.

Fig. 7 is a schematic plan view showing an example in which the elastic member 35 is present in the central portion ADcc.

According to the description of the specification and the drawings, at least the following matters can be made clearer.

An absorbent article having an absorbent article in a longitudinal direction and a transverse direction intersecting the longitudinal direction, characterized in that: an absorbent body provided along the longitudinal direction for absorbing excrement; along the lateral direction The abdomen side band member in which the central portion in the lateral direction is fixed to the one end portion of the absorbent body and the one end portion in the longitudinal direction of the absorbent body, and the abdomen side band Components having different members, which are disposed along the aforementioned lateral direction, and absorb from the foregoing The non-skin side of the main body covers the other end portion of the absorbent body in the longitudinal direction, and the center portion in the lateral direction is fixed to the back side belt member at the other end portion, and the abdominal side belt member and the back side belt member are An elastic member that expands and contracts along the lateral direction is disposed, and the abdominal side belt member has a side edge portion of the abdominal side belt member at both side edges in the lateral direction, and the back side belt member is attached to both sides of the lateral direction. The back side belt member side edge portion is formed by joining the side belt portion side edge portion and the back side belt member side edge portion to form a cylindrical shape, and the absorbent body has a liquid absorbing material An absorbent core material which is laminated and a liquid-impermeable leakage preventing sheet which covers the absorbent core material from the non-skin side of the absorbent core material, and the absorbent core material is attached to the abdomen side end portion Between the back side end portion, a reduced diameter portion having a width in the lateral direction that is narrower than the front end portion and the back side end portion, and at least one side edge portion of the back side belt member The position of the repeated points in the reduced diameter portion in the longitudinal direction.

According to such an absorbent article, it is possible to suppress the occurrence of a gap between the wearer's foot and the absorbent body.

In the absorbent article, it is preferable that the elastic member disposed at a position overlapping the diameter reducing portion in the longitudinal direction is between the one end portion and the other end portion of the abdominal side belt member in the lateral direction, or The back side belt member has a discontinuous portion between the one end portion in the lateral direction and the other end portion, or both of them.

According to such an absorbent article, since the contraction force generated by the elastic portion of the belt portion acting in the lateral direction of the absorbent core member is suppressed Therefore, it is possible to prevent the absorbent core from wrinkles.

In the absorbent article, it is preferable that the elastic member disposed at a position overlapping the reduced diameter portion in the longitudinal direction is at least between the one end portion and the other end portion of the abdominal side belt member in the lateral direction. Become a discontinuous part.

According to such an absorbent article, since the contraction force in the lateral direction does not act on the back side region of the absorbent core material, at least in this region, the absorbent core material is not wrinkled, and the infant can be made When wearing a disposable diaper in a sleeping position, there is no back pain.

In the absorbent article, it is preferable that the back side belt member side edge portion has a region overlapping the absorbent core member in the longitudinal direction, and the length of the overlapping region in the longitudinal direction is the back side belt member side. The length of the edge portion in the longitudinal direction is at least one-half.

According to such an absorbent article, the stretching force of the abdominal side belt elastic member and the back side belt elastic member can be sufficiently applied to the back side (hip side) of the absorbent core member, and when the disposable diaper is worn, The absorbent core is less prone to positional displacement.

In the absorbent article, it is desirable that a portion of the foot elastic member disposed in the lateral direction outer side of the absorbent core member in the longitudinal direction is in an extended state and intersects with the elastic member disposed on the back side belt member. The length in the longitudinal direction of the region is one-half or more of the length in the longitudinal direction of the side edge portion of the back side belt member.

According to such an absorbent article, The pulling force in the lateral direction of the elastic member of the portion greatly acts on the effective length range of the elastic member of the foot, so that the fit of the disposable diaper can be further improved.

In the absorbent article, it is preferable that a belt member for holding the absorbent article in a rounded state when the absorbent article is discarded is provided on the non-skin side surface of the back side belt member, the belt member and the absorbent member The core material is disposed at a position where at least a part of the longitudinal direction is repeated.

According to such an absorbent article, an absorbent core having a thickness in the thickness direction between the wearer's skin (hip) and the post-treatment belt functions as a cushioning body, so that the feeling of the post-treatment belt is difficult to convey. It can suppress the wearer's uncomfortable feeling to the wearer's skin (hip).

In the absorbent article, it is desirable that the length of the back side belt member in the longitudinal direction is longer than the length of the abdominal side belt member in the longitudinal direction.

According to such an absorbent article, the area of the back side belt member becomes wider than that of the abdominal side belt member, and the wearer's buttocks can be more widely covered.

In the absorbent article, it is preferable that the longitudinal side upper end portion of the back side belt member is parallel to the longitudinal lower end portion of the back side belt member.

According to such an absorbent article, when the disposable diaper is formed, the back side belt member becomes worn when the paper diaper is worn. It is not easy to turn up, and it is easy to prevent the wearer's buttocks from being exposed.

In the absorbent article, it is preferable that the absorbent body has a sheet-like surface sheet covering the absorbent core material from the skin side, and the surface sheet member is formed to stand at each end of the surface sheet member in the lateral direction. The leakage preventing wall portion of the portion is higher than the rising height of the leakage preventing wall portion formed at a position on the front end portion and the back end portion of the absorbent core member, and the absorbent core member is The rising height of the leakage preventing wall portion formed by the position of the reduced diameter portion is high.

According to such an absorbent article, the leakage-reducing wall portion (three-dimensional wrinkle LSG) is formed to be high in the reduced diameter portion of the absorbent core material in which the gap is likely to be generated, so that the excrement can be prevented from leaking.

===implementation form === <Structure of disposable disposable diapers>

Fig. 1 is a schematic perspective view of a disposable disposable diaper (paper diaper 1) as an example of the absorbent article of the present embodiment. Fig. 2 is a schematic plan view of the same diaper 1 as seen from the skin side. Fig. 3 is a schematic plan view of the same diaper 1 as seen from the non-skin side. 4A is a cross-sectional view taken along line A-A and a cross-sectional view taken along line C-C of FIG. 2, and FIG. 4B is a cross-sectional view taken along line B-B of FIG.

As shown in FIGS. 2, 4A and 4B, the disposable diaper 1 has a longitudinal direction, a lateral direction, and a thickness direction which are three directions orthogonal to each other. Moreover, since the disposable diaper 1 is a so-called three-piece type, it has three parts 10, 30a, 30b. That is, the disposable diaper 1 has: as the first structure An absorbent body 10 for absorbing excrement such as urine disposed in the underarm portion of the wearer; and a second member covering the abdominal side belt member 30a of the wearer's abdominal side; and The third member covers the back side belt member 30b of the back side of the wearer. Moreover, in the unfolded state of FIG. 2, the absorptive body 10 is hung between the belt members in a state in which the abdomen side belt member 30a and the back side belt member 30b are arranged in parallel in the longitudinal direction with a space therebetween. And the respective end portions 10ea, 10eb in the longitudinal direction of the absorbent body 10 are joined and fixed to the closest belt members 30a, 30b, respectively, and their outer shape is slightly H-shaped in a plan view. Further, from this state, the absorptive main body 10 is folded in half at a slightly central portion C10 in the longitudinal direction. Here, in the folded state, the abdominal side belt member side edge portion 30ae and the back side belt member side of the portion of the side belt member 30a and the back side belt member 30b which are opposed to each other are abutting on the side surface of the wearer. The edge portions 30be (that is, the respective end portions in the lateral direction) are joined and coupled, and the belt members 30a and 30b are formed into a ring shape. Thereby, the disposable diaper 1 in which the waist opening 1HB and the pair of foot opening 1HL are formed as shown in FIG. 1 is formed.

In addition, various connection structures can be employed as the connection structure that connects the abdominal side belt member side edge portion 30ae and the back side belt member side edge portion 30be. In addition, for example, it is possible to use a diaper type diaper by using a detachable connection structure such as a buckle member (not shown), and a detachable type diaper can be used as the diaper. Incidentally, in this example, the former connection structure is used, whereby the disposable diaper 1 of this embodiment is a pants type.

In the following description, the longitudinal direction, the lateral direction, and the thickness direction of the disposable diaper 1 are simply referred to as [longitudinal direction], [lateral direction], and [thickness direction], respectively. Further, regarding the thickness direction, the side in contact with the wearer is also referred to as [skin side], and the opposite side is referred to as [non-skin side].

Hereinafter, three constituent members 10, 30a, and 30b of the disposable diaper 1 will be described with reference to Figs. 1 to 4B.

As shown in FIG. 2 and FIG. 4B, the absorbent main body 10 is provided with an absorbent core member 11; a surface sheet member 13 that covers the absorbent core member 11 from the skin side of the core material 11, and a non-corresponding material from the same core material 11. The skin side covers the absorbent core member 11 and becomes the outer back sheet member 15 of the absorbent body 10.

The absorbent core material 11 has a structure in which a liquid absorbing material is laminated, and can absorb excrement such as urine. As the liquid absorbing material, for example, a liquid absorbing fiber such as pulp fibers can be used. Further, the absorbent core material 11 may contain, for example, a highly absorbent polymer as the liquid absorbent particulate material, or may contain a liquid absorbent material other than the liquid absorbent fiber and the liquid absorbent particulate material. Further, the absorbent core member 11 may be covered with a liquid permeable sheet (not shown) such as a thin paper.

The absorbent core member 11 of the present embodiment has the abdomen-side end portion 11a which is an end region on the upper side in the longitudinal direction in Fig. 2, and the back-side end portion 11b which is an end region on the lower side in the longitudinal direction in Fig. 2 . Further, between the abdomen side end portion 11a and the back side end portion 11b, a reduced diameter portion 11c having a width in the lateral direction narrower than the abdomen side end portion 11a and the back side end portion 11b is provided. Thereby, the absorbent core 11 is constructed such that it is in a plan view as shown in FIG. Slightly hourglass clock shape. By providing the reduced diameter portion 11c in the absorbent core member 11, the interference between the wearer's foot of the disposable diaper 1 and the absorbent core member 11 can be reduced, and when the disposable diaper 1 is worn, the wearer can easily move the foot.

The surface sheet member 13 is a sheet-like member that covers the absorbent core member 11 from the skin side, for example, a liquid-permeable non-woven fabric having a larger planar size than the absorbent core member 11 (see FIG. 4B). In addition, the back sheet member 15 is a sheet-like member that covers the absorbent core member 11 from the non-skin side, and has a larger planar size than the absorbent core member 11. Examples of the sheet member include polyethylene or polypropylene. A sheet of a two-layer structure in which the liquid-impermeable leakage preventing sheet 15a and the exterior sheet 15b such as a nonwoven fabric are adhered to each other. Further, in a state where the absorbent core member 11 is sandwiched between the back sheet member 15 and the surface sheet member 13, the back sheet member 15 is prevented from leaking in a portion of the absorbent core member 11 that protrudes outward from the four sides. The sheet 15a is adhered to the surface sheet member 13 in a frame shape, whereby the absorbent body 10 is substantially formed.

Further, in the disposable diaper 1, as shown in Figs. 1, 2, and 4B, a so-called three-dimensional gather LSG and a foot gather wrinkle LG are formed by the exterior sheet 15b. The three-dimensional wrinkles LSG are the leakage preventing wall portions that are provided at the respective end portions of the surface sheet member 13 in the lateral direction, and the foot wrapping wrinkles LG are formed at the feet of the respective foot circumference openings 1HL and 1HL of the disposable diaper 1. Peripheral expansion and contraction. The exterior sheet 15b will be described in more detail. First, as shown in Fig. 4B, the size of the outer sheet 15b in the lateral direction is sufficiently larger than that of the leakage preventing sheet 15a, that is, the outer sheet 15b is largely larger from the lateral sides of the leakage preventing sheet 15a in the lateral direction. protruding. Further, the protruding portion 15bf will be the position of the end portion 10es of the absorbent body 10 in the lateral direction as a folded-back position and laterally In the vicinity of the folded-back position, the foot elastic member 17 and the foot-adjusting elastic member 19 such as a rubber thread are fixed in the longitudinal direction while being extended in the longitudinal direction, thereby forming the aforementioned foot. Wrinkle pleats LG. Further, the foot circumference auxiliary elastic member 19 is not necessarily required, and the foot circumference wrinkles LG may be formed only by the foot circumference elastic members 17. Moreover, the folded portion 15bg further extends toward the center side in the lateral direction, and is joined to the end portion at a position covering the end portion of the surface sheet member 13 in the lateral direction. Further, the portion joined to the end portion functions as the base end portion LSGb of the three-dimensional gather LSG, that is, a portion closer to the front end side in the lateral direction than the base end portion LSGb as the free end portion LSGf, which can be self-surface sheet The member 13 stands up. Further, at the front end portion of the free end portion LSGf, the LSG elastic member 18 such as a rubber thread is fixed in the longitudinal direction while being extended in the longitudinal direction. Therefore, the absorbent body 10 is bent in the longitudinal direction by the contraction of the longitudinal direction of the LSG elastic member 18, so that the side sheet member 13 side becomes the inner peripheral side, and the contraction by the LSG elastic member 18 is caused by the contraction. The force causes the free end portion LSGf to contract in the longitudinal direction and rises from the surface sheet member 13, whereby the free end portion LSGf functions as a three-dimensional wrinkle LSG.

Further, in the present embodiment, since the absorbent core member 11 has a slightly hourglass clock shape having a reduced diameter portion, the rising height of the three-dimensional gathers LSG is different depending on the width of the reduced diameter portion in the lateral direction. Specifically, as the width of the absorbent core member 11 in the lateral direction increases, the portion 15bf that protrudes in the lateral direction becomes shorter, and the rising height of the three-dimensional gathers LSG becomes lower. Conversely, when the width of the absorbent core 11 is larger in the lateral direction The portion 15bf which is narrow and protrudes in the lateral direction becomes higher, and the rising height of the three-dimensional wrinkle LSG becomes higher. Therefore, the three-dimensional wrinkle LSG of the reduced-diameter portion 11c having a narrow width in the lateral direction of the absorbent core member 11 is larger than the width of the abdominal-side end portion 11a or the back-side end portion 11b having a wide width in the lateral direction of the absorbent core member 11. The height of the rise becomes higher. Thereby, the three-dimensional wrinkle LSG is formed to be high in the reduced diameter portion where the gap is likely to be formed, and the excrement can be prevented from leaking.

Further, although not shown, depending on the case, a thin paper such as a second sheet may be attached between the surface sheet member 13 and the absorbent core member 11 or between the back sheet member 15 and the absorbent core member 11. Liquid permeable sheet.

As shown in Fig. 2, each of the abdomen side belt member 30a and the back side belt member 30b is a sheet member having a substantially rectangular shape from a plane of view of a soft sheet such as a non-woven fabric. Here, as shown in FIG. 4A and FIG. 4B, the non-woven fabrics 31 and 32 are joined to form two sheets, and the abdominal side belt member 30a and the back side belt member 30b are formed. Further, the abdominal side belt member 30a and the back side belt member 30b cover the respective end portions 10ea and 10eb of the absorbent body 10 in the longitudinal direction from the non-skin side of the absorbent body 10, respectively, in the lateral center portions 30ac and 30bc. The center portions 30ac and 30bc of the belt members 30a and 30b are superposed on the respective end portions 10ea and 10eb and joined. Furthermore, the two sheets of non-woven fabrics 31, 32 can also be of different sizes.

Further, in the disposable diaper 1 of the present embodiment, the longitudinal length (length in the short side direction) of the back side belt member 30b is longer than the longitudinal length (length in the short side direction) of the abdominal side belt member 30a. Further, the lateral length of the abdominal side belt member 30a is the lateral direction of the back side belt member 30b. The lengths are approximately equal. That is, the area of the back side belt member 30b is wider than that of the abdomen side belt member 30a, and the wearer's buttocks can be widely covered. Further, the back side belt member 30b has a substantially rectangular shape, and the upper end portion in the longitudinal direction is parallel to the lower end portion. Therefore, the opening edge of the waist opening 1HB and the opening edge of the foot opening 1HL of the back side belt member 30b are also parallel. As a result, when the disposable diaper 1 is worn, the back side belt member is less likely to be lifted, and the wearer's buttocks are easily prevented from being exposed.

The absorbent body 10 is superposed on the central portion 30ac of the abdominal side belt member 30a and the central portion 30bc of the back side belt member 30b so as not to overlap the absorbent body 10 at the longitudinal end portion 30ae2 of the abdominal side belt member 30a and The end portion 30be2 of the back side belt member 30b in the longitudinal direction overlaps the portion 30ac2, 30bc2 (see FIG. 2) closer to the center side than the end portions 30ae2, 30be2. In addition, the longitudinal end portions 30ae2 and 30be2 of the abdominal side belt member 30a and the back side belt member 30b are formed so as to extend over the entire length in the lateral direction, and the absorbent main body 10 does not have a band-like overlapping portion 30ae2 at all. 30be2. Further, the portions 30ae2 and 30be2 which do not overlap each other are part of the waist opening 1HB (Fig. 1) constituting the disposable diaper 1, and therefore, in the portions 30ae2, 30be2, the elastic members 35 to be described later are in the portions 30ae2, 30be2. The horizontal direction is continuously provided over a full length range.

As shown in Fig. 2, Fig. 4A and Fig. 4B, a plurality of elastic members 35, 35, etc. of a rubber thread or the like are interposed between the two non-woven fabrics 31 and 32 of the belt members 30a and 30b. And extending in the horizontal direction In the long state, the nonwoven fabrics 31 and 32 are joined and fixed, whereby the abdominal side belt member 30a and the back side belt member 30b are respectively stretched in the lateral direction. Further, the plurality of elastic members 35, 35, ... are arranged at intervals in the longitudinal direction and are arranged in the longitudinal direction. In the present specification, the elastic member 35 provided on the abdominal side belt member 30a is used as the abdominal side elastic member 35a, and the elastic member 35 provided on the back side belt member 30b is used as the back side elastic member 35b. The elastic member 35 has substantially the same basic structure except for the detailed specifications such as the thickness, the number of strips, and the arrangement position in the longitudinal direction. Therefore, the description will be made on the abdominal side elastic member 35a provided on the abdominal side belt member 30a, and the back side elastic member 35b provided on the back side belt member 30b will be omitted. Further, all the configurations of the back side belt member 30b are also omitted in the same manner.

In the following, for the convenience of explanation, as shown in FIG. 3, the abdominal side belt member 30a and the back side belt member 30b are respectively divided into two regions AU and AD in the longitudinal direction, and further, from the longitudinal direction. The end side faces the center side, and the two areas AU and AD arranged in the longitudinal direction are referred to as [upper area AU] and [lower area AD]. Furthermore, referring to FIG. 3, it can be seen that the regions AU and AD are both strip-shaped regions along the lateral direction.

The upper region AU is a portion constituting the waist opening 1HB of the disposable diaper 1, and the upper region AU is a region that does not overlap the absorbent main body 10 (absorbent core member 11) over the entire length in the lateral direction. In the upper region AU, the abdominal side belt elastic member 35a (the back side elastic member 35b) is continuously disposed over the entire length from one end portion to the other end portion in the lateral direction of the same region AU, and is elongated in the lateral direction. The bottom is fixed. Therefore, according to the abdominal side belt elastic member 35a, the upper region AU is stretched in the lateral direction over a substantially full length in the lateral direction, and the stretchability is the stretchability of the waist opening 1HB of the disposable diaper 1.

The lower region AD is a region in which the portion 10p of the absorbent core 10 in which the absorbent core 11 is present is superposed and fixed on the central portion ADc in the lateral direction. Further, in the lower region AD, the portions ADe and ADe located on both sides of the central portion ADc do not overlap the absorptive body 10.

Further, in the same portions ADe and ADe, the elastic member 35 is continuously disposed from the one end portion to the other end portion in the lateral direction of the same portion ADe, and is fixed in a state of being elongated in the lateral direction. Thereby, the respective portions ADe and ADe are provided with stretchability in the lateral direction over a substantially full length range in the lateral direction.

Further, in the center portion ADc, the elastic members 35 are arranged discontinuously in the lateral direction. Specifically, in this example, the end portions of the elastic member 35 are at the both end portions ADce and ADce in the lateral direction of the central portion ADc, but the central portion ADcc in the lateral direction of the central portion ADc does not exist. Since the elastic member 35 is such that the elastic member 35 is discontinuously arranged in the lateral direction in the central portion ADc. In the case where the elastic member 35 is not present in the central portion ADcc of the central portion ADc, since the same central portion ADcc is hardly stretched, the contraction of the central portion ADcc in the lateral direction is suppressed. As a result, the shrinkage of the absorbent core member 11 in the lateral direction is also suppressed, so that the absorbent core member 11 can be prevented from wrinkles, and the skin side of the absorbent core member 11 can be prevented. Maintain a slightly flat shape. As a result, it is possible to effectively prevent the liquid absorption of the absorbent core material 11 from being impeded, and it is also possible to suppress the leakage of excrement due to the generation of wrinkles.

In the present embodiment, the lateral length Wa of the portion of the abdominal side belt member 30a in the lateral direction at the lateral direction of the abdominal side belt member 30a is larger than the lateral direction of the back side belt member 30b. The lateral length Wb of the portion where the both end portions ADce are disposed with the back side belt elastic member 35b is longer. In other words, the length of the portion of the abdominal side belt elastic member 35a that overlaps with the absorbent core member 11 is longer than the lateral length of the portion of the back side belt elastic member 35b that overlaps with the absorbent core member 11. Such an arrangement effect will be described with reference to FIG. 5 which will be described later.

In addition, as shown in FIG. 3, an illustration sheet 40 (not shown) of an animal or the like is formed in the central portion ADc of the lower region AD. However, for the same reason as described above, wrinkles of the illustrated sheet 40 can be suppressed. . Therefore, it becomes easy to see the illustration.

Moreover, as shown in FIG. 3, the post-treatment tape 50 is provided in the surface of the back side belt member 30b on the non-skin side. The post-treatment tape 50 is an elongated band-shaped member (belt member) having an adhesive surface, and is fixed to the back side belt member 30b in a state in which the adhesive surface is folded inside. When the disposable diaper 1 is to be discarded, the disposable diaper 1 is rounded in the longitudinal direction while the absorbent body 10 is inside, and the folded post-treatment tape 50 is extended to wind the adhesive side to the diaper. 1. Thereby, the disposable diaper 1 can be kept in a rounded state. Thereby, it does not adhere to the inside of the disposable diaper 1 (absorbability The diaper 1 can be discarded by the excrement or the like of the main body 10) leaking to the outside.

<Regarding the positional relationship between the reduced diameter portion 11c and the side edge portion of the belt member>

In the disposable diaper 1 of the present embodiment, by adjusting the joint position of the back side belt member 30b to the absorbent main body 10 (particularly, the reduced diameter portion 11c of the absorbent core member 11), it is possible to wear the disposable diaper 1 when wearing the disposable diaper. A gap is unlikely to occur between the foot of the person and the absorbent body 10 (absorbent core 11). Hereinafter, a description will be given using a comparative example.

Fig. 5 is a view for explaining the positional relationship between the reduced diameter portion of the absorbent core member 11 of the present embodiment and the back side belt member 30b. Fig. 6 is a view for explaining the positional relationship between the reduced diameter portion of the absorbent core member 11 of the comparative example and the back side belt member 30b.

As described above, in the disposable diaper 1, the abdominal side belt member side edge portion 30ae is joined to the back side belt member 30be, and the abdominal side belt member 30a and the back side belt member 30b are formed into a ring shape, as shown in Fig. 1. Shorts type diapers. At this time, the abdominal side belt elastic member 35a provided in the abdominal side belt member 30a and the back side belt elastic member 35b provided in the back side belt member 30b are connected to each other in the joint portion of the belt member side edge portions 30ae and 30be, and are stretched. Forces interact with each other. Therefore, in the waist opening 1HB of the disposable diaper 1, the elastic force in the lateral direction is generated by the abdominal side belt elastic member 35a and the back side belt elastic member 35b. Due to this stretchability, the opening 1HB is in close contact with the wearer's waist, and the disposable diaper 1 is less likely to be displaced in position when worn. Further, since the abdominal side belt elastic member 35a and the back side belt elastic member 35b respectively pull the absorbent body 10 in the lateral direction, Therefore, the absorbent body 10 is enlarged outward in the lateral direction, and can cover the wearer's underarm portion widely. In other words, by joining the abdominal side belt member side edge portion 30ae and the back side belt member side edge portion 30be, the abdominal side belt elastic member 35a and the back side belt elastic member 35b are widely used in the belt members 30a and 30b. The stretching force in the lateral direction acts.

Moreover, the absorbent core member 11 of the present embodiment has a reduced diameter portion in the intermediate portion (between the abdomen-side end portion 11a and the back-side end portion 11b) in the longitudinal direction of FIG. 5, so that when the disposable diaper 1 is worn It is possible to suppress the both side portions of the absorbent core member 11 from interfering with the wearer's foot, and the wearer easily moves the foot. Further, since the absorptive core member 11 has a narrower width in the lateral direction than the abdomen-side end portion 11a or the back-side end portion 11b and the like, the absorbent core member 11 has a narrower portion and a wearer's foot. There is a problem that gaps are easily generated. Further, when a gap is formed between the wearer's foot and the absorbent core member 11, the excrement discharged into the absorbent core member 11 leaks from the gap toward the outside. In particular, in the case of a lot of infants who wear the disposable diaper 1 in a sleeping position, it is easy to cause a gap on the buttock side depending on the movement of the foot or the like.

On the other hand, in the disposable diaper 1 of the present embodiment, as shown in FIG. 5, the back side belt elastic member 35b has a region overlapping the reduced diameter portion 11c of the absorbent core member 11, and the gap is less likely to occur. In other words, the position of a part of the back side belt member side edge portion 30be is overlapped with the reduced diameter portion 11c of the absorbent core member 11 in the longitudinal direction, and a gap is less likely to occur. This is because the region of the reduced diameter portion 11c of the absorbent core member 11 that overlaps with the back side belt member side edge portion 30be is as described above. The expansion and contraction force in the lateral direction of the side belt elastic member 35a and the back side belt elastic member 35b acts, and the reduced diameter portion 11c is pulled outward in the lateral direction, whereby it is easy to expand in the lateral direction. Therefore, it is possible to suppress the occurrence of a gap between the wearer's foot and the absorbent core member 11.

Further, as shown in Fig. 6, in the disposable diaper 1 of the comparative example, the back side belt member side edge portion 30be of the back side belt member 30b is in the longitudinal direction, and the position is not overlapped with the reduced diameter portion 11c of the absorbent core member 11. . In this case, the elastic force in the lateral direction of the abdominal side belt elastic member 35a and the back side belt elastic member 35b does not act on the reduced diameter portion 11c of the absorbent core member 11, and the reduced diameter portion 11c is not laterally outward. Pull. Therefore, a gap is still easily generated between the wearer's foot and the absorbent core member 11.

In this embodiment, at least a part of the back side belt member side edge portion 30be and the reduced diameter portion 11c of the absorbent core member 11 are overlapped in the longitudinal direction, and the abdominal side belt elastic member 35a and the back side are provided. The elastic force of the elastic member 35b acts on the reduced diameter portion 11c, and the reduced diameter portion of the absorbent core member 11 can be expanded in the lateral direction. Thereby, it is possible to prevent a gap from occurring between the wearer's foot and the absorbent core member 11.

Further, the region where the stretching force of the abdominal side belt elastic member 35a and the back side belt elastic member 35b acts is not limited to the reduced diameter portion 11c of the absorbent core member 11. In the case of FIG. 5, the back side end portion 11b of the absorbent core member 11 similarly has a region overlapping with one of the back side belt member side edge portions 30be in the longitudinal direction. Therefore, the force that pulls the back side end portion 11b outward in the lateral direction also acts. For example, even if the buttocks side of the absorbent core 11 becomes heavy due to defecation or the like, by the back The side end portion 11b is pulled outward in the lateral direction (that is, in the waistline direction), so that the absorbent core member 11 is less likely to be displaced. In the present embodiment, the length of the overlapping portion of the back side belt member side edge portion 30be and the absorbent core member 11 in the longitudinal direction is at least one-half (1/2) or more of the longitudinal length of the back side belt member side edge portion 30be. (Refer to Figure 5). By repeating one or more of the back side belt member side edge portions 30be with the absorbent core member 11, the contraction force by the abdominal side belt elastic member 35a and the back side belt elastic member 35b is easily applied to the absorbent core. The back side (hip side) area of the material 11.

<Other effects on disposable diaper 1>

In the disposable diaper 1, the back side belt elastic member 35b (abdominal side belt elastic member 35a) is located on both side portions ADe (see FIG. 3) in the lateral direction in the lower region AD, and is disposed in the lateral direction of the absorbent body 10 in two directions. A part of the foot elastic member 17 and the foot circumference auxiliary elastic member 19 which are provided in a state in which the end is elongated in the longitudinal direction intersects. Here, the length in the longitudinal direction of the region where the abdominal side belt elastic member 35a intersects the foot circumference elastic member 17 and the foot circumference auxiliary elastic member 19 is La. Similarly, the length in the longitudinal direction of the region where the back side belt elastic member 35b intersects the foot circumference elastic member 17 and the foot circumference auxiliary elastic member 19 is Lb.

In such an intersection region, when the disposable diaper 1 is worn, the force of pulling the absorbent body 10 in the longitudinal direction by the foot elastic member 17 and the foot circumference auxiliary elastic member 19 acts, and the back side belt elastic member 35b (abdominal side belt elastic member 35a) aligning the absorbent body 10 to the horizontal The role of pulling the force. That is, the force that the absorbent body 10 (absorbent core material 11) is in close contact with the wearer's body is applied.

Further, the foot elastic member 17 and the foot circumference auxiliary elastic member 19 are not disposed in the entire region of the longitudinal direction of the absorbent body 10 in the extended state, but are disposed in an extended state in a predetermined region in the longitudinal direction. In the region where the elastic member is disposed in an extended state, the force of contracting the absorbent body 10 in the longitudinal direction acts, and the force of contracting the absorbent body 10 in the longitudinal direction is not performed in the region where the elastic member is not disposed in the extended state. effect. In the present specification, the longitudinal direction of the region in which the force contracting in the longitudinal direction acts is also referred to as the [effective length] of the foot elastic member 17 and the foot circumference auxiliary elastic member 19. In FIGS. 5 and 6, the portion indicated by the thick broken line corresponds to the effective length of the foot circumference elastic member 17 and the foot circumference auxiliary elastic member 19.

As shown in Fig. 6, in the comparative example, the length of La in the intersection region on the abdominal side is substantially equal to the length of Lb in the intersection region on the back side. Specifically, in the region La of FIG. 6, the abdomen side belt elastic members 35a intersecting the effective elongated portion of the foot elastic member 17 are seven, in the region Lb of FIG. 6, and the effective elongated portion of the foot elastic member 17. There are seven elastic side members 35b on the back side. Therefore, in the comparative example, the force acting on the effective length of the foot elastic member 17 by the back side belt elastic member 35b (the force pulling outward in the lateral direction) acts substantially uniformly.

In the case of the comparative example, since the person wearing the disposable diaper operates the foot, the fit of the absorbent body 10 (absorbent core material 11) may be deteriorated on the back side. Because the person moves mainly on the front side (abdomen side) The foot, therefore, the absorbent body 10 (absorbent core 11) is pulled toward the front side (abdominal side) each time the wearer moves the foot, whereas the abdominal side belt elastic member 35a (by the abdomen side) Since the contraction force of the back side belt elastic member 35b) is constant, the force of pulling the absorbent body 10 (absorbent core material 11) outward in the lateral direction is mainly in the longitudinal direction on the wearer's buttocks. The force exerted by the abdominal side pulling force tends to cause a positional shift of the absorbent body 10 (absorbent core material 11). In this case, when the back side becomes heavy due to defecation or the like, the excrement leaks from the portion of the absorbent body 10 (absorbent core 11) toward the outside. In particular, when the wearer is an infant or a child, most of the diapers are worn in a sleeping position. Therefore, when a gap is formed between the underarms on the back side (hip side), the excrement easily leaks. Further, when the force of pulling outward in the lateral direction is weak on the back side of the absorbent body 10 (absorbent core member 11), the end portion 10eb of the absorbent body 10 becomes becomes effective every time the wearer moves the foot. Since it is easy to shift to the inner side in the horizontal direction, the absorbent main body 10 (absorbent core material 11) is easily turned up and the buttocks are easily exposed.

On the other hand, as shown in FIG. 5, in the present embodiment, the length of the Lb of the intersection area on the back side is longer than the length of La in the intersection area on the abdomen side. In other words, the portion of the foot elastic member 17 (the foot circumference auxiliary elastic member 19) which is in a state of being elongated in the longitudinal direction (effective length) intersects with the back side belt elastic member 35b is a foot circumference elastic member 17 (foot circumference assistance) A portion (effective length) of the elastic member 19) in a state of being elongated in the longitudinal direction is larger than a region where the abdominal side belt elastic member 35a intersects. Specifically, in the region La of FIG. 5, the elastic member with the foot circumference The number of the abdomen side band elastic members 35a intersecting the effective elongated portions of 17 is seven, and in contrast, in the region Lb of Fig. 6, the back side band elastic members 35b intersecting the effective elongated portions of the foot elastic members 17 are seven More 10 articles. Therefore, the force that the absorbent body 10 (absorbent core member 11), the foot elastic member 17, and the like are pulled outward in the lateral direction by the back side belt elastic member 35b is laterally outward by the abdominal side belt elastic member 35a. The power of pulling is greater. Thereby, in the disposable diaper 1 of this embodiment, the fit of the back side can be improved.

Moreover, in the present embodiment, the effective length of the back side elastic member 17 (foot circumference auxiliary elastic member 19) on the back side is at least 1/2 of the longitudinal length of the back side belt member side edge portion 30be. In FIG. 5, the effective length Lb of the back side elastic member 17 on the back side is one-half or more of the longitudinal length of the back side belt member side edge portion 30be. In the region of the back side belt member side edge portion 30be, when the abdominal side belt member 30a and the back side belt member 30b are formed into a ring shape, the lateral direction of the abdominal side belt elastic member 35a and the back side belt elastic member 35b Since the pulling force acts in this region, the range in which the foot elastic member 17 (the foot peripheral auxiliary elastic member 19) intersects is increased, whereby the fit of the disposable diaper 1 can be further improved by the above effects.

Further, in the disposable diaper 1 of the present embodiment, the lateral length Wa of the portion overlapping the absorbent core member 11 in the abdominal side belt elastic member 35a is made smaller than that of the back side belt elastic member 35b and the absorbent core member. The length Wb of the overlapped portion is long (see FIG. 5), and the strength of the force by which the absorbent core member 11 is pulled outward in the lateral direction can be adjusted. elasticity The longer the portion of the member that overlaps the absorbent core member 11, the more strongly the absorbent core member 11 is pulled outward in the lateral direction by the elastic member. Therefore, as shown in the present embodiment, the back side band is shortened. The overlapping portion of the elastic member 35b and the absorbent core member 11 is such that the force for pulling the absorbent core member 11 directly outward in the lateral direction on the back side does not become excessively strong. Thereby, the fit of the absorbent body 10 of the buttocks can be maintained, and a certain space can be formed between the buttocks and the absorbent core material 11, and the excreted feces can be prevented from being diffused and held in the space. In addition, by the force which pulls the absorptive core material 11 directly to the outer side in the lateral direction on the abdominal side, the absorptive core material 11 can be adhered to the body, and leakage of excreted urine can be suppressed.

Further, in the disposable diaper 1 of the present embodiment, each elastic member is provided so that the back side elastic member 35b expands and contracts in the lateral direction in comparison with the expansion and contraction force when the foot elastic member 17 or the foot circumference auxiliary elastic member 19 expands and contracts in the longitudinal direction. The telescopic force becomes stronger. That is, each elastic member is disposed such that when the foot elastic member 17 and the foot circumference auxiliary elastic member 19 are adhered to the absorbent body 10, the ratio of the foot elastic member 17 and the foot circumference auxiliary elastic member 19 is increased. When the back side belt elastic member 35b is adhered to the back side belt member 30b, the ratio of the back side belt elastic member 35b is increased. Thereby, the force which expands the absorptive main body 10 (the absorptive core material 11) to the outer side in the lateral direction acts more strongly, and the absorbent body 10 (absorbent core material) is provided in the hip area of a wearer etc. 11) The width is widened in the horizontal direction, and it becomes easy to suppress the leakage of excrement.

Further, in the disposable diaper 1 of the present embodiment, when the disposable diaper is worn, it is possible to suppress the skin feel on the buttocks side due to the post-treatment tape 50. Uncomfortable. In the disposable diaper 1, the longitudinal length Lb of the region where the back side belt elastic member 35b and the foot elastic member 17 intersect is longer than the longitudinal length La of the region where the abdominal side belt elastic member 35a and the foot elastic member 17 intersect. That is, the back side belt member 30b is larger than the overlapping portion of the absorbent body 10 in the longitudinal direction. Thereby, the position of the process belt 50 after being fixed to the non-skin side surface of the back side belt member 30b becomes easy to overlap the position of the absorptive core material 11 in the thickness direction (refer FIG. 3). In other words, the post-treatment tape 50 and the absorbent core material 11 are disposed at positions where at least a part of the longitudinal direction overlaps. When the wearer wears the disposable diaper 1, since the absorbent core 11 having a thickness in the thickness direction exists between the wearer's skin (hip) and the post-treatment tape 50, the absorbent property is utilized. The core material 11 functions as a cushioning body, so that the feeling of the post-treatment tape 50 is hard to be transmitted to the wearer's skin (hip), and the feeling of discomfort can be suppressed.

===Other implementations ===

The embodiments of the present invention have been described above, but the embodiments are intended to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. Further, the present invention can be modified and improved without departing from the scope of the technical idea, and the present invention naturally includes equivalents thereof. For example, the following modifications can be made.

In the above-described embodiment, the elastic member 35a (35b) of the central portion ADc is used for the purpose of lowering the stretchability of the central portion ADc in the lateral direction of the lower region AD in the abdominal side belt member 30a (back side belt member 30b). Make it non-continuous. That is, disposed on the absorbent core 11 The elastic member at the position where the reduced diameter portion 11c is repeated in the longitudinal direction is disposed so as to be discontinuous in the lateral center portion ADc of the belt member. Further, as an example of the discontinuous elastic member, as shown in FIG. 3, the elastic members 35a (35b) are present at both end portions ADce and ADce in the lateral direction of the central portion ADc, but in the central portion The central portion ADcc in the lateral direction of ADc does not have the configuration of the elastic member 35a (35b), but is not limited thereto.

In other words, if the central portion ADc for reducing the stretchability of the central portion ADc of the lower region AD is provided with the elastic member 35a (35b) discontinuously, the central portion ADc of the central portion ADc may be used. There is an elastic member 35a (35b). Fig. 7 is a schematic plan view showing the example of the same. In addition, in FIG. 7, the non-skin side non-woven fabric 31 in the abdominal side belt member 30a is removed, and the elastic member 35a is exposed to the outside. In the example of Fig. 7, the elastic member 35a located at the central portion ADcc is in a state of being finely divided. Moreover, when it is this thin-cut state, the elastic member 35a becomes substantially incapable of providing elasticity to the center part ADcc. Therefore, the elastic member 35a in the fine cut state may be present in the central portion ADcc. The length of the elastic member 35a in the thin-cut state is, for example, a length of 0 mm or more and 5 mm or less, and it is desirable to have a length of 0 mm or more and 3 mm or less. However, since the appearance is deteriorated when the fine elastic member 35a is present, it is desirable that the elastic member 35D is not present in the central portion ADcc (Fig. 3).

Further, the back side belt member 30b is disposed on the back side of the position where the reduced diameter portion 11c of the absorbent core member 11 is overlapped in the longitudinal direction. The member 35b may be continuously arranged in a range from one end portion to the other end portion in the lateral direction. The back side belt elastic member 35b may be continuously disposed (not shown) in the entire area in the lateral direction. Thereby, the contraction force in the lateral direction of the back side belt elastic member 35b acts on the center portion ADc. The center portion ADc of the back side belt member 30b is applied by the stretching force so that the foot circumference elastic member 17 (foot circumference auxiliary elastic member 19) and the back side belt member 30b are pulled to each other at the portion, and the back side belt member is pulled 30b is pressed against the wearer's buttocks. Thereby, the fit on the buttocks side can be improved. In this case, in the abdominal side belt elastic member 35a provided in the abdominal side belt member 30a, the portion disposed at a position overlapping the reduced diameter portion 11c of the absorbent core member 11 in the longitudinal direction is at the center portion. There is a discontinuous part on the ADc. By causing the contraction force in the lateral direction to not act on the back side region of the absorbent core member 11, so that the absorbent core member 11 does not cause wrinkles in the region, the suckling child can wear the disposable diaper 1 in a sleeping position. When you don't have back pain.

In the above-described embodiment, the elastic member 35 is disposed discontinuously in the central portion ADc in the lateral direction of the lower region AD of FIG. 3, but the present invention is not limited thereto. For example, the elastic member 35 may not be disposed in the central portion ADc. That is, in the example of Fig. 3 described above, the end portion of the elastic member 35 is applied to each of the end portions ADce and ADce in the lateral direction in the central portion ADc, but the end portion of the elastic member 35 may not be applied to the central portion ADc. The position of the end ADce.

In the above embodiment, the materials of the exterior sheet 15b and the belt members 30a and 30b are not woven, but are not limited to the nonwoven fabric. example For example, it may be a woven fabric or a sheet member other than the woven fabric. Incidentally, the outer sheet 15b may be omitted. In this case, the leakage preventing sheet 15a serves as an outer sheet of the absorbent body 10.

In the above embodiment, the rubber wire is taken as an example of the elastic member 35, but the invention is not limited thereto. For example, a strip rubber may be used as the elastic member 35, or a stretchable belt-shaped nonwoven fabric, a stretchable resin film, or the like may be used.

1‧‧‧paper diapers (absorbent articles)

1HB‧‧‧waist opening

1HL‧‧‧foot opening

10‧‧‧Absorbable ontology

11‧‧‧Absorbent core material

15‧‧‧Back sheet member

15b‧‧‧Outer sheet

30a‧‧‧Abdominal side strap members

30b‧‧‧Back side belt members

30ae‧‧‧Side side part of the abdominal side member

30be‧‧‧back side belt member side edge

40‧‧‧Illustrated sheet

LG‧‧‧Foot wrinkles

Claims (9)

An absorbent article comprising: an absorbent article having a longitudinal direction and a transverse direction intersecting the longitudinal direction, wherein the absorbent article has an absorbent body provided along the longitudinal direction for absorbing excrement; The side surface portion of the absorbent body that covers the one end portion of the absorbent body in the longitudinal direction while the non-skin side of the absorbent body is fixed to the one-side portion of the abdominal side belt member; and the abdomen side The member having a different member is provided along the lateral direction, and the center portion in the lateral direction is fixed to the other end while covering the other end portion of the absorbent body in the longitudinal direction from the non-skin side of the absorbent body. In the back side belt member, each of the abdominal side belt member and the back side belt member is provided with an elastic member that expands and contracts along the lateral direction, and the abdominal side belt member has an abdominal side belt on both sides in the lateral direction. a member side edge portion, the back side belt member having a back side belt member side edge portion on both side edges in the lateral direction, by The side wall portion of the abdomen side belt member and the side edge portion of the back side belt member are formed into a tubular shape, and the absorbent body has an absorbent core material in which a liquid absorbing material is laminated, and The liquid-impermeable leakage preventing sheet in which the absorbent core material is covered from the non-skin side of the absorbent core material, and the absorbent core material is provided between the abdomen-side end portion and the back-side end portion, and has the aforementioned lateral direction Width is larger than the abdomen side end portion and the aforementioned back side end The narrowed diameter portion of the portion has a position at least a portion of the side edge portion of the back side belt member that overlaps the reduced diameter portion in the longitudinal direction. The absorbent article according to claim 1, wherein the elastic member disposed at a position overlapping the diameter reducing portion in the longitudinal direction is from one end portion of the abdominal side belt member in the lateral direction to the other There is a discontinuous portion between the one end portions or between the one end portion to the other end portion of the back side belt member in the lateral direction or both. The absorbent article according to claim 2, wherein the elastic member disposed at a position overlapping the reduced diameter portion in the longitudinal direction is at least from one end portion of the abdominal side belt member in the lateral direction Between the other ends, there is a discontinuous portion. The absorbent article according to any one of claims 1 to 3, wherein the back side belt member side edge portion has a region overlapping the absorbent core member in the longitudinal direction, the repeated region The length in the longitudinal direction is one-half or more of the length in the longitudinal direction of the side edge portion of the back side belt member. The absorbent article according to any one of claims 1 to 4, wherein the portion of the foot elastic member that is disposed closer to the outer side in the lateral direction than the absorbent core member in the longitudinal direction is in an extended state. The longitudinal direction of the region intersecting with the aforementioned elastic member disposed on the back side belt member The length of the direction is one-half or more of the length in the longitudinal direction of the side edge portion of the back side belt member. The absorbent article according to any one of claims 1 to 5, wherein the non-skin side surface of the back side belt member is provided to hold the absorbent article when the absorbent article is to be discarded In the belt member in the rounded state, the belt member and the absorbent core member are disposed at positions at least partially overlapping in the longitudinal direction. The absorbent article according to any one of claims 1 to 6, wherein the length of the back side belt member in the longitudinal direction is longer than the length of the abdominal side belt member in the longitudinal direction. The absorbent article according to any one of claims 1 to 7, wherein the upper end portion of the back side belt member in the longitudinal direction is parallel to the longitudinal lower end portion of the back side belt member. . The absorbent article according to any one of claims 1 to 8, wherein the absorbent system has a sheet-like surface sheet member covering the absorbent core material from a skin side, and the surface sheet member is provided by the surface sheet member. a leakage preventing wall portion that is formed at each end portion of the surface sheet member in the lateral direction, and is formed on the abdomen side end portion and the back portion of the absorbent core member The rising height of the leakage preventing wall portion formed at the position of the side end portion is higher in the rising height of the leakage preventing wall portion formed at the position of the reduced diameter portion of the absorbent core member.