JP2015186547A - absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely fasten upper and lower elastic sheets to parts to be fastened respectively on the cross and sufficiently keep the strength of a fastening tape.SOLUTION: A disposable diaper 1 is provided with the body part 10 comprising a ventral part 11 and a dorsal part 12. The diaper 1 includes: a pair of upper and lower two steps of elastic sheets 20, 30 which are prepared extendedly in both side directions of the dorsal part 12, which have expandable/contractible elastic parts 23, 33, and which have fastening members 22, 32 fixed to the free ends 21, 31 in both directions; and a part to be fastened 40 which is provided on the outer face of the side opposite from the face in contact with the human body of the ventral part 11, and which are freely attachably/detachably fastened with the fastening members 22, 32. At least one of the upper and lower two steps of elastic sheets 20, 30 is provided with perforations 34 that can produce an opening 35 and with elastic parts 33a, 33b that are on the proximal end side and the free end side from the part provided with the perforations 34.

Description

  The present invention relates to an absorbent article such as a disposable paper diaper.

2. Description of the Related Art Conventionally, a main body having an abdominal side located on the abdominal side of the human body and a dorsal side located on the back side, a pair of fastening tapes provided in two upper and lower stages extending from both sides of the main body, and a fastening tape 2. Description of the Related Art A fixed-type paper diaper provided with a to-be-attached portion to which is detachably fixed is known.
As a method of fixing the fastening tape provided in two general upper and lower stages, the fastening tape is fastened substantially in parallel (normally stopped), or the upper and lower fastening tapes are crossed to stop. A method of wearing (cross-stop) is known. Among these, the method of mounting with a cross stopper is a mounting method with excellent fit because a paper diaper can be mounted according to the body shape of the wearer. However, when the fastening tape is pulled according to the body shape of the wearer and fastened at an appropriate position, the upper and lower fastening tapes may overlap each other, and may not be fastened at the optimum position.

In order to solve this problem, various fastening tapes have been proposed. For example, a method has been proposed in which a part to be secured is provided on a surface opposite to a surface on which a fastening member coupled to the part to be secured is provided (Patent Document 1). With this method, even when the upper and lower fastening tapes are overlapped with each other, the upper surface of the other fastening tape can be secured.
A method of providing an opening in a fastening tape has also been proposed (Patent Document 2). In this method, since the to-be-attached part is exposed from the opening, even if the wearer has a lean body shape and covers the to-be-attached part with the fastening tape on one side, the opening from the fastening tape is used. The fastening tape on the other side can be fastened to the fastened part.

Japanese Patent No. 4066806 JP 2011-010822 A

However, when the fastening part is provided on one side of the fastening tape, it is fastened to the paper diaper itself in order to fasten the other fastening tape on the top surface of one fastening tape when fastening the fastening tape. Fastening tape is either one. Accordingly, it is not possible to obtain a fastening force equivalent to that when both the upper and lower fastening tapes are cross-stopped, which causes a slippage when the weight of the paper diaper increases.
Moreover, when providing an opening part in a fastening tape, since the location in which an opening part is provided is being fixed, an opening part is not necessarily arrange | positioned in a desired location. Further, when the opening is widened, the opening is easily arranged at a desired position. However, as the opening is widened, the strength of the fastening tape is weakened, so that it is easily cut when the fastening tape is pulled strongly.

  The present invention has been made in view of such problems, and an object of the present invention is to cover each of the upper and lower fastening tapes even when the upper and lower fastening tapes overlap each other. An object of the present invention is to provide an absorbent article that can be fastened to a fastened portion and that can sufficiently maintain the strength of a fastening tape.

In order to solve the above-mentioned problem, the invention described in claim 1
In an absorbent article comprising a main body having a ventral part located on the ventral side of the human body and a dorsal part located on the dorsal side,
A pair of upper and lower two-stage stretchable sheets provided extending in both sides of the dorsal side, having stretchable stretchable parts, and fastening members fastened to the free ends in both sides;
A to-be-attached portion provided on an outer surface opposite to a contact surface to the human body of the abdominal side, and the fastening member is detachably attached;
With
At least one of the upper and lower two-stage stretchable sheets is:
A notch capable of generating an opening in the stretchable sheet;
The expansion / contraction part is provided on the base end part side and the free end part side from the place where the cut part is provided.

The invention described in claim 2
The absorbent article according to claim 1,
The cut portion is formed by cutting a perforation.

The invention according to claim 3
In the absorptive article according to claim 1 or 2,
The opening is circular, elliptical or polygonal.

The invention according to claim 4
In the absorptive article according to any one of claims 1 to 3,
The cut portion is provided along a plurality of intersecting straight lines.

The invention described in claim 5
In the absorptive article according to any one of claims 1 to 4,
A reinforcing sheet material is bonded to at least a region near the cut portion.

The invention described in claim 6
In the absorptive article according to any one of claims 1 to 5,
At least a region in the vicinity of the cut portion is bonded with a hot-melt adhesive having a higher basis weight than the other stretchable sheet regions.

According to the present invention, when the upper and lower stretchable sheets are cross-stopped to the adherend, even if the stretchable sheets overlap each other, the other is secured from the opening of one stretchable sheet. It can be fixed to the part. Therefore, it is possible to securely attach the upper and lower stretchable sheets to the to-be-attached portion.
In addition, since both sides of the portion to be the opening portion are respectively stretchable portions, the force is dispersed when pulled, so that the vicinity of the opening portion is not easily destroyed. Furthermore, the stretchability of the stretchable sheet is improved by providing the opening.

It is a bottom development view of the back side in the disposable paper diaper of Embodiment 1. It is a plane development view of the front side in the disposable paper diaper of FIG. It is sectional drawing of the III-III part in FIG. It is a perspective view at the time of assembling | attaching the disposable paper diaper of FIG. 1 in the state at the time of mounting | wearing in the case (a) normally stopped, and the case (b) cross-stopped. It is an enlarged view of the left elastic sheet vicinity in the disposable paper diaper of FIG. 1, (a) is before expansion | extension, (b) is after expansion | extension. It is a perspective view of the other example at the time of assembling the disposable paper diaper of FIG. 1 in the state at the time of mounting | wearing. It is an enlarged view of the left elastic sheet vicinity in Embodiment 2, (a) is before expansion | extension, (b) is after expansion | extension. It is an enlarged view near the left elastic sheet in Modification 1, wherein (a) is before perforation cutting and (b) is after perforation cutting. It is an enlarged view of the left elastic sheet vicinity in the modification 2. It is an enlarged view near the left elastic sheet in Modification 3. It is an enlarged view of the left elastic sheet vicinity in the modification 4.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. However, the scope of the invention is not limited to the illustrated example. In describing the embodiment for carrying out the present invention, the width direction of the disposable paper diaper 1 is the left-right direction, the direction perpendicular to the width direction is the up-down direction, and the direction perpendicular to the surface of the disposable paper diaper 1 is the front-rear direction. It will be shown and described.

<Embodiment 1>
As shown in FIGS. 1 and 2, the disposable paper diaper 1 includes a main body 10 having an abdominal part 11 located on the abdomen side of a human body and a back side part 12 located on the back side when worn. 10 is a pair of upper and lower two-stage stretchable sheets 20 and 20 and stretchable sheets 30 and 30 provided to extend in both directions of the back side portion 12, and a ventral side portion for locking these sheets. 11 and a to-be-attached part 40 provided on the rear side.

When the disposable paper diaper 1 is mounted, the main body 10 is covered from the abdominal side to the back side of the crotch part of the human body, and the pair of upper and lower two-stage elastic sheets 20 and 20 and the elastic sheets 30 and 30 described above. Is fixed to the to-be-attached portion 40, and a crotch portion 13 is formed and attached at a position located at the crotch. Here, as shown in FIGS. 4A and 4B, a method of fixing the upper and lower two-stage sheets substantially in parallel (a normal fixing), and a method of fixing the upper and lower two-stage sheets crossing and fixing. It can be fastened with (cross stop).
Moreover, the paper diaper 1 is attached to the abdominal side extension parts 111, 111 extending to both outer sides in the ventral side part 11 and the back side extension parts 121, 121 extending to both outer sides in the back side part 12. When this is done, the waist portion 14 is formed. Here, since an elastic member 141 such as rubber thread is provided along the width direction (left-right direction) in the center of the edge portion along the trunk circumference direction of the back side portion 12, the elastic member 141 causes the flat gathers. The body portion 10 is configured to be stretchable so as to fit around the wearer's torso.
Further, on both side edges of the crotch portion 13, two leg surrounding portions 15, 15 are formed from the abdominal side portion 11 to the dorsal side portion 12 and arranged around the leg of the body when worn. The leg circumference portion 15 is provided with elastic members 151 such as rubber thread in accordance with the curved shape thereof, and a flat gather is formed by the elastic members 151 and fits freely around the wearer's leg so as to prevent side leakage. It comes to prevent.

  As shown in a cross-sectional view in FIG. 3, the main body 10 includes a liquid-permeable top sheet 10 a provided on the contact surface side (front side) with the skin when worn, and the opposite side (rear side) with the skin when worn. A back sheet 10b provided on the side), an absorbent body 10c interposed between the top sheet 10a and the back sheet 10b, and a pair of left and right gather sheets 10d and 10d provided along the vertical direction on the top sheet 10a side. And is composed mainly of.

The top sheet 10a is a liquid-permeable sheet, is provided on a surface that comes into contact with the skin when the disposable paper diaper 1 is worn, and plays a role of receiving body fluid and transporting it to the absorber 10c.
As the material of the top sheet 10a, an olefin type such as polyethylene or polypropylene, a polyester type or a polyamide type synthetic fiber, a recycled fiber such as rayon or cupra, or a natural fiber such as cotton is used as a fiber material. It is preferable to use a material processed by an appropriate processing method such as a method, a thermal bond method, a melt blown method, or a needle punch method.

The back sheet 10b is provided on the surface that does not come into contact with the skin when the disposable paper diaper 1 is mounted, and is formed by bonding the waterproof sheet 16 and the exterior sheet 17 together. The waterproof sheet 16 plays the role of preventing the body diaper 1 from seeping out and leaking out, and the exterior sheet 17 plays the role of improving the texture of the outer surface of the paper diaper 1.
As the material of the waterproof sheet 16, for example, a sheet material having at least water-impervious properties such as polyethylene and polypropylene, and a sheet material having moisture permeability from the viewpoint of preventing stuffiness is preferably used.
As a material for the exterior sheet 17, it is preferable to use a material excellent in smoothness and flexibility. For example, similarly to the top sheet 10a, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used. Nonwoven fabrics obtained by appropriate processing methods such as the lace method, spunbond method, thermal bond method, melt blown method, needle punch method can be used. It is preferable to use an excellent nonwoven fabric. Water repellent coated with silicone, paraffin metal or alkylchromic water repellent materials to prevent urine from penetrating, to prevent blurring and to improve skin feel (dry feeling) A treated nonwoven fabric may be used.

The absorbent body 10c is interposed between the top sheet 10a and the back sheet 10b, and has a high water absorption property such as an absorbent material such as cotton and pulp, a sheet-like base material such as fiber or film, and a super absorbent polymer. The absorbent core S1 formed in combination with a resin is configured to be covered with a sheet material S2 such as a liquid-permeable crepe paper, a nonwoven fabric, or a perforated sheet.
Examples of the superabsorbent resin used in the absorbent body 10c include carboxymethylcellulose, polyacrylic acid and its salts, crosslinked acrylate polymer, starch-acrylic acid graft copolymer, and hydrolysis of starch-acrylonitrile graft copolymer. A product obtained by partially cross-linking a blister column polymer such as a product, a cross-linked polyoxyethylene, a carboxymethyl cellulose, a polyethylene oxide, or a polyacrylamide, or a copolymer of isobutylene and maleic acid is preferably used.
The absorber 10c may have a single-layer structure or a structure divided into a plurality of layers. Further, the absorbent body 10 c is disposed at a position extending from the abdominal side portion 11 through the crotch portion 13 to the back side portion 12.

The gather sheets 10d and 10d are provided on both sides of the absorbent body 10c along the vertical direction from the abdomen 11 to the dorsal part 12 on the top sheet 10a side.
As shown in FIG. 4, the left and right inner portions of the gather sheets 10d and 10d are not fixed to the top sheet 10a, and a plurality of elastic members 18 are provided substantially in parallel along the vertical direction. A three-dimensional gather that rises in the shape of a "" and an inverted "" and that can be deformed in a stretchable manner according to the wearer's body shape is formed. On the other hand, the laterally outer portions of the gather sheets 10d and 10d are fixed so as to be disposed on the upper surface of the top sheet 10a on the side of the absorbent body 10c.
Further, as a material for the gather sheets 10d and 10d, for example, a non-woven fabric similar to the exterior sheet 17 can be used. However, while preventing the transmission of urine and the like, it prevents fogging and feels to the skin (dry feeling). ) Is preferably used a water-repellent treated non-woven fabric coated with a silicon-based, paraffin metal-based, alkylchromic water-based water repellent material or the like.

  As described above, the gather sheets 10d and 10d are provided along the vertical direction on the top sheet 10a side to prevent leakage in the horizontal direction. Here, as shown in FIG. 2, a back gather sheet 10e is provided along the left-right direction on the top sheet 10a side to prevent leakage in the vertical direction.

  The upper stretchable sheets 20 and 20 respectively extend from the back side portion 12 toward both sides, the base end portions are joined to the back side extension portions 121 and 121, and the free end portions 21 and 21 are both sides. The shape protrudes in a convex shape in the direction. The upper stretchable sheets 20 and 20 include fastening members 22 and 22 that are male locking elements of hook and loop fasteners provided on the free end portions 21 and 21, and a stretchable portion that can be stretched and contracted to the extended sheet portion. 23, 23, and is stretched with the left-right direction as the expansion / contraction direction at the time of mounting, and can be fixed to the fixing portion 40 provided on the rear side of the abdominal side portion 11.

The sheet base material of the upper stretchable sheets 20 and 20 can be formed using the same nonwoven fabric sheet as the top sheet 10a. Moreover, it is preferable that the nonwoven fabric sheet used here shall be the value within the range of 20-80gsm so that the fabric weight may be excellent.
The fastening members 22 and 22 are hooking elements of a male material of a hook-and-loop fastener, and are provided with a hook material on which a large number of protrusions such as a hook shape, a mushroom shape, and a hook shape are formed. And the fastening members 22 and 22 can be detachably locked to the to-be-attached part 40 provided in the back side of the abdominal side part 11. As shown in FIG.
The stretchable portions 23, 23 are configured to be stretchable in the left-right direction by sandwiching a plurality of elastic stretchable members arranged in parallel in the vertical direction at a predetermined interval between two nonwoven fabrics and bonding them with an adhesive. ing.

  The lower elastic sheets 30 and 30 are provided in parallel to the lower side of the upper elastic sheets 20 and 20, and the base end portion extends rearward similarly to the upper elastic sheets 20 and 20. It joins to the part 121, and the free end parts 31 and 31 become the shape which protruded convexly in the both-sides direction. Here, the lower stretchable sheets 30 and 30 can generate fastening members 32 and 32 which are male locking elements of the hook-and-loop fastener provided on the free end portions 31 and 31 and can generate openings if cut off. Perforations 34, 34, stretchable stretchable portions 33a, 33a closer to the base end side than the location where the perforations are provided, and stretchable stretchable portions 33b, 33b closer to the free end portion. . And at the time of mounting | wearing, the elastic sheets 30 and 30 are extended by making the left-right direction into an expansion-contraction direction, and can be fixed to the to-be-attached part 40 provided in the back side of the abdominal side part 11. FIG.

The sheet base material of the lower stretchable sheets 30 and 30 can be formed using the same non-woven fabric sheet as the topsheet 10a, similar to the stretchable sheets 20 and 20, The weight per unit area is preferably set to a value in the range of 20 to 50 gsm that can be stretched when worn, and the base end part and the free end parts 31 and 31 have a value in the range of 20 to 80 gsm so as to be excellent in durability. It is preferable to do.
The fastening members 32, 32 are hooking elements of a male material of a hook-and-loop fastener, like the upper-side fastening members 22, 22, and a hook material on which a large number of protrusions such as a hook shape, a mushroom shape, and a hook shape are formed. Is provided. And the fastening members 32 and 32 can be detachably latched to the to-be-attached part 40 provided in the rear side of the abdominal side part 11. As shown in FIG.
The stretchable parts 33a, 33a and the stretchable parts 33b, 33b are bonded in the left-right direction by attaching a plurality of elastic stretchable members arranged in parallel in the vertical direction at a predetermined interval between two nonwoven fabrics with an adhesive. It has a stretchable structure.

The perforation 34 is provided along the width direction (vertical direction) of the elastic sheet 30 as shown in the enlarged view of the vicinity of the left elastic sheet 30 in FIG. And the opening part 35 can be produced by cutting off the perforation 34 and extending the elastic sheet 30 in the left direction (FIG. 5B).
Further, when the stretchable sheet 30 is stretched because the stretchable portions 33a and 33a and the stretchable portions 33b and 33b are respectively provided on the base end portion side and the free end portion side where the perforation 34 is provided. In addition, the load applied around the perforation 34 can be distributed. Therefore, in the disposable paper diaper 1, it is possible to make it difficult to tear the sheet in the vicinity of the openings 35 and 35.

  As described above, the disposable paper diaper 1 can generate the openings 35 and 35 by cutting and extending the perforations 34 and 34 of the lower elastic sheets 30 and 30. Therefore, as shown in FIG. 6, even when the upper and lower elastic sheets are overlapped due to a cause such as the lower abdomen of the wearer coming out, from the openings 35, 35 of the lower elastic sheets 30, 30. The upper stretchable sheets 20 and 20 can be fastened to the fastened portion 40. Therefore, it is possible to securely attach the upper and lower elastic sheets to the to-be-attached portion 40. Furthermore, by providing the opening 35, the length that is extended in the left-right direction by the amount of the opening 35 is increased, so that the stretchability of the stretchable sheet 30 is also improved.

  Here, since the openings 35 and 35 can be generated after the perforations 34 and 34 are cut off, the perforations 34 and 34 can be cut off as necessary to generate the openings 35 and 35. For example, it is not necessary to cut the perforations 34 and 34 in the case of a wearer with a body shape in which the upper and lower sheets do not overlap when the cross is stopped.

  Next, other embodiments of the lower stretchable sheets 30 and 30 will be described. In the following description of the modified example, the difference from the disposable paper diaper 1 of the present embodiment will be mainly described, and the same reference numerals will be given to the same configurations, and the description will be omitted. Moreover, the left side sheet | seat is demonstrated as a typical example among a pair of elastic sheets.

<Embodiment 2>
In the second embodiment, as shown in FIG. 7A, in the lower stretchable sheet 30 in the first embodiment, the stretchable portion 33 is provided in the entire sheet area other than the free end portion 31, and the stretchable portion 33 is substantially in the center in the left-right direction. In this embodiment, the perforation 34 is provided along the width direction (up and down direction). Here, the stretchable portion 33 is bonded by sandwiching a plurality of elastic stretchable members arranged in the vertical direction at a predetermined interval between two nonwoven fabrics, like the stretchable portion 33a and the stretchable portion 33b of the first embodiment. By sticking together with an agent, the structure can be expanded and contracted in the left-right direction. And the opening part 35 can be produced like this Embodiment 1 by cutting off with the perforation 34 and extending the elastic sheets 30 and 30 to the left direction (FIG.7 (b)).

  Thus, also in the case of the second embodiment, the opening 35 can be generated as in the first embodiment, and the same effect as in the second embodiment can be obtained. Here, in the case of the second embodiment, since it is only necessary to insert the perforation 34 after providing the stretchable portion 33, there is an advantage that it can be manufactured more easily than the first embodiment.

  Next, modified examples in the first and second embodiments will be described. In the following description of the modified example, the same reference numerals are given to the components that are the same as those in the first embodiment, and the description thereof is omitted. Moreover, the left side sheet | seat is demonstrated as a typical example among a pair of elastic sheets.

<Modification 1>
As shown in FIG. 8A, in the first modification, in the lower elastic sheet 30, the shape of the opening 35 when the perforation 34 of the first embodiment is cut off is the trapezoidal shape. It is a modification in the case of providing so that it may become.
In the first modification, unlike the present embodiment, the opening 35 can be generated only by cutting the perforation 34 without extending the lower elastic sheet 30 to the left side. Therefore, since the sheet near the perforation itself does not need to be stretched, a sheet that is difficult to stretch and has high strength can be used as the sheet near the perforation 34. Here, for example, as a sheet base material in the vicinity of the perforation 34, it can be formed using a nonwoven fabric sheet similar to the top sheet 10a, and within a range of 20 to 80 gsm so that the basis weight is excellent. It is preferable to use a value.
In the first modification, the perforation 34 is provided so that the opening 35 has a trapezoidal shape. However, the shape of the opening 35 can be changed as appropriate, for example, a rectangular shape, various triangular shapes, and various types. A pentagonal shape, a circular shape, an elliptical shape, or the like can be selected and formed.

<Modification 2>
Modification 2 is a modification in the case where the perforations 34 of Embodiment 1 are provided along two intersecting straight lines in the vertical direction and the horizontal direction, as shown in FIG.
Thus, by providing the perforation 34 not only in the vertical direction but also in the left-right direction, when the perforation 34 is cut out and pulled, the opening can be made easier. Therefore, the length of the perforation 34 provided in the vertical direction can be made shorter than in the case of the present embodiment, and a decrease in sheet strength when the opening 35 is generated can be suppressed.
In the second modification, the perforation 34 is provided on two intersecting straight lines. However, if the same effect as in the second modification can be obtained, the number of lines, the shape, and the like are appropriately changed. For example, it may be provided on three intersecting straight lines.

<Modification 3>
Modification 3 is a modification in the case where the reinforcing sheet 36 is bonded to the vicinity of the perforation 34 on the rear side of the lower stretchable sheet 30 in the second embodiment as shown in FIG.
In the second embodiment, when the stretchable sheet 30 is extended, a load is particularly applied to the sheet end portion in the vertical direction at the position where the perforation 34 is provided. Therefore, the strength of the stretchable sheet 30 can be improved by covering the portion where the load is applied and bonding the additional reinforcing sheet 36 together. Here, the sheet material of the reinforcing sheet 36 can be formed using a nonwoven fabric sheet similar to the base material of the stretchable sheet 30 or a sheet material similar to the base material of the waterproof sheet 16.
The region where the reinforcing sheet 36 is provided can be appropriately changed as long as it is provided at least in the region near the perforation 34. For example, the reinforcing sheet 36 may be provided over the entire sheet.
Further, the number of reinforcing sheets 36 to be added and the surface on which the reinforcing sheets are bonded can be appropriately changed. For example, one reinforcing sheet 36 may be added on each of the front side and the rear side, and a total of two sheets may be added. .

<Modification 4>
As shown in FIG. 11, in the case of the second embodiment, the modified example 4 includes a high basis weight adhesive portion 37 in which a region near the perforation is applied and bonded with a hot-melt adhesive having a higher basis weight than other regions. It is a modification when it has.
By bonding with a high basis weight hot melt adhesive, the sheet near the high basis weight adhesive portion 37 can be hardened and the strength of the sheet can be improved. Easy-to-use parts can be reinforced.

  As described above, the disposable paper diaper 1 can fasten the upper and lower fastening tapes even when the upper and lower fastening tapes are overlapped with each other, and can be fastened to the fastened portions. It can be said that this is a disposable paper diaper 1 that can sufficiently maintain the strength of.

In addition, although it was decided that the opening parts 35 and 35 were produced in the lower elastic sheet 30, 30, it should just be provided in at least one of the upper and lower two-stage elastic sheets. Anyway.
Further, by providing the perforations 34, 34, it is cut and used as necessary. However, a cut may be made in advance.

In addition, the stretchable part has a configuration in which a plurality of elastic stretchable members arranged in parallel in the vertical direction are sandwiched between two nonwoven fabrics with an adhesive, but the elastic member is provided at regular intervals. There is no need, for example, the amount of the elastic member at the end in the width direction (vertical direction) may be increased. In this way, the stretchability and strength of the end region can be improved.
Further, the configuration of the stretchable part itself is not limited to the above-described method, and can be appropriately changed. For example, a stretchable nonwoven fabric may be used.

  Further, in the present invention, the upper and lower two-stage stretchable sheets are each provided with a free end projecting in the left and right directions so that the user can easily pinch, but it is not always necessary to project the tip. Absent. For example, it is good also as a structure which provides a fastening member near the free end part of the left-right direction on each rectangle.

  Furthermore, the scope of the present invention is not limited to the above, and various improvements and design changes may be made without departing from the spirit of the present invention.

1 disposable paper diapers (absorbent articles)
DESCRIPTION OF SYMBOLS 10 Main-body part 10a Top sheet 10b Back sheet 10c Absorber 10d Gather sheet 10e Back gather sheet 11 Abdominal side part 12 Back side part 13 Crotch part 14 Trunk circumference part 15 Leg circumference part 16 Waterproof sheet 17 Exterior sheet 18 Elastic member 20 Elasticity Sheet 21 Free end portion 22 Fastening member 23 Stretchable portion 30 Stretchable sheet 31 Free end portion 32 Fastening member 33 Stretchable portion 34 Perforation 35 Opening portion 36 Reinforcing sheet 37 Adhesive portion 40 with high weight

Claims (6)

In an absorbent article comprising a main body having a ventral part located on the ventral side of the human body and a dorsal part located on the dorsal side,
A pair of upper and lower two-stage stretchable sheets provided extending in both sides of the dorsal side, having stretchable stretchable parts, and fastening members fastened to the free ends in both sides;
A to-be-attached portion provided on an outer surface opposite to a contact surface to the human body of the abdominal side, and the fastening member is detachably attached;
With
At least one of the upper and lower two-stage stretchable sheets is:
A notch capable of generating an opening in the stretchable sheet;
An absorptive article provided with the expansion-contraction part in the base end part side and the free end part side rather than the part which provided the cut part. The absorbent article according to claim 1,
An absorbent article, wherein the cut portion is formed by cutting a perforation. In the absorptive article according to claim 1 or 2,
The absorbent article, wherein the opening is circular, elliptical or polygonal. In the absorptive article according to any one of claims 1 to 3,
The absorbent article, wherein the cut portion is provided along a plurality of intersecting straight lines. In the absorptive article according to any one of claims 1 to 4,
An absorptive article, wherein a reinforcing sheet material is bonded to at least a region near the cut portion. In the absorptive article according to any one of claims 1 to 5,
An absorbent article, characterized in that at least a region in the vicinity of the cut portion is bonded with a hot-melt adhesive having a higher basis weight than the other stretchable sheet regions.

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