WO2017141808A1

WO2017141808A1 - Disposable diaper and method for producing disposable diaper

Info

Publication number: WO2017141808A1
Application number: PCT/JP2017/004716
Authority: WO
Inventors: 健志黒原; 周鈴木
Original assignee: 王子ホールディングス株式会社
Priority date: 2016-02-16
Filing date: 2017-02-09
Publication date: 2017-08-24

Abstract

An upper region of a disposable diaper according to the present invention includes: an inner elastic part that is formed by sandwiching an upper elastic member between sheets, on the inner side of an absorbent body; and an outer sheet part that is located so as to face, at least, an outside surface of the inner elastic part, on the outer side of the absorbent body. The inner elastic part includes a non-bonded region, which is not bonded to a bonding part of the absorbent body, and a bonded region, which is bonded to the outer sheet part, around the bonding part. The bonded region is bonded to the outer sheet part such that an open end, which is open toward a crotch part, is formed between the inner elastic part and the bonding part. A lower region, which is closer to the crotch part than the upper region is, has an outer elastic part that is formed by sandwiching a lower elastic member between sheets. The outer elastic part is bonded to the bonding part.

Description

Disposable diaper and method for manufacturing disposable diaper

The present invention relates to a disposable diaper having an exterior portion provided with an elastic member, and a method for manufacturing a disposable diaper.

The disposable diaper includes a first exterior part constituting the front body, a second exterior part constituting the rear body, a front end part joined to the first exterior part, and a rear end part joined to the second exterior part. An absorbent main body. The absorbent main body is bent in two, and both ends of the first exterior portion in the waistline direction are joined to both ends of the second exterior portion in the waistline direction, respectively. The first exterior part and the second exterior part form a waistline part, and the first and second exterior parts and the absorbent body joined to the exterior part form a leg-hole opening. In the first exterior part and the second exterior part, elastic members such as rubber thread are arranged along the waistline direction in the waistline part.

In the disposable diaper of patent document 1, the pocket opened toward the crotch part is formed in the inner surface which contacts skin. A pocket accommodates excrement and suppresses abdominal leak and back leak of excrement. In the disposable diaper, an adhesive is applied to the inner surface of the absorbent main body so as to form a pocket, and the first exterior portion and the second exterior portion are against the inner surface of the absorbent main body. Glued. Specifically, an adhesive is applied to the inner surface of the absorbent main body so as to form a concave shape that opens toward the crotch, and the exterior portion is bonded to this bonding region. Thereby, a concave-shaped pocket opened toward the crotch part is formed between the absorbent main body and the exterior part.

Japanese Patent No. 5457828

However, in the disposable diaper of Patent Document 1, an elastic member is sandwiched between nonwoven fabrics to form an exterior portion, and thus the exterior portion provided with the elastic member is directly bonded to the inner surface of the absorbent main body. For this reason, in the adhesion | attachment area | region of an absorptive main body and an exterior part, the elasticity of an exterior part is falling and the adhesiveness with skin becomes low.

An object of the present invention is to provide a disposable diaper and a method for manufacturing a disposable diaper that can suppress leakage from the waistline without impairing adhesion to the skin.

A disposable diaper for solving the above problems has an inner surface arranged to face the wearer's skin and an outer surface arranged on the opposite side of the skin, and constitutes a front body. An absorptive main body having a first exterior part, a second exterior part constituting the back body, a front end part and a rear end part, overlapping the front end part and the second exterior part overlapping the first exterior part. The said rear end part is equipped with the said absorptive main body provided with a to-be-adhered part, respectively. At least one of the first exterior part and the second exterior part includes an upper region and a lower region located closer to the crotch than the upper region. The upper region includes an upper elastic member that expands and contracts in the waist direction, and the lower region includes a lower elastic member that expands and contracts in the waist direction. The upper region is an inner elastic part formed by sandwiching the upper elastic member with a sheet, and is located on the inner side with respect to the absorbent main body and on the outer side with respect to the absorbent main body. It is an outer sheet | seat part, Comprising: The said outer sheet | seat part located facing the outer surface of the said inner side elastic part at least is provided. The lower region is an outer elastic portion formed by sandwiching the lower elastic member with a sheet, and includes the outer elastic portion positioned on the outer side with respect to the absorbent main body. The inner elastic portion includes a non-bonded region that is not bonded to the bonded portion and a bonded region that is bonded to the outer sheet portion around the bonded portion. The bonding region is bonded to the outer sheet portion so that an opening end that opens toward the crotch portion is formed between the inner elastic portion and the bonded portion. The outer elastic portion is bonded to the bonded portion.

The manufacturing method of the disposable diaper for solving the above-mentioned problem is an absorptive main body which has the 1st exterior part which constitutes the front body, the 2nd exterior part which constitutes the back body, the front end part, and the rear end part. The front end portion that overlaps the first exterior portion and the rear end portion that overlaps the second exterior portion each include the absorbent main body including an adherend, and the first exterior portion and the second exterior portion At least one of them includes an upper region and a lower region located closer to the crotch than the upper region, and an inner surface disposed to face the wearer's skin, and the opposite side of the skin A method for manufacturing a disposable diaper having an outer surface disposed on the surface. The method includes preparing an outer sheet portion located outside the absorbent main body at least in the upper region, and a lower elastic member extending and contracting in the waistline direction outside the lower region and the absorbent main body. Forming an outer elastic portion having a sheet sandwiching the lower elastic member, disposing the adherend portion across the outer elastic portion and the outer sheet portion, and forming the outer elastic portion and the outer sheet portion on the outer elastic portion. At least the sheet, which is a constituent element of an inner elastic part having an upper elastic member that expands and contracts in the waistline direction, and a sheet that sandwiches the upper elastic member is bonded to the outer sheet part. The adhesive portion is stacked from above, the adhesive portion is sandwiched between the outer sheet portion and the inner elastic portion sheet, and the inner elastic portion is seated against the adhesive portion. While the outer sheet portion is formed around the bonded portion so that an opening end that opens toward the crotch portion is formed between the sheet of the inner elastic portion and the bonded portion. Adhering a sheet of an elastic part; and forming the inner elastic part inside the upper region and the absorbent main body.

The above method includes executing the above steps in any order within the scope described in the present specification.

The perspective view of the underpants type disposable diaper in 1st Embodiment which materialized the absorptive main part of the present invention. (A) is a plan view showing an unfolded state of the pants-type disposable diaper in the first embodiment, (b) is a cross-sectional view taken along 2B-2B in (a), and (c) is a diagram showing an adhesion region in the upper region (a ) Is a plan view corresponding to (a), and (d) is a plan view corresponding to (a). It is a figure which shows the manufacturing process of the underpants type disposable diaper of 1st Embodiment, (a) is the figure which has arrange | positioned the lower elastic member in the outer sheet | seat part, (b) is an outer elastic part with respect to a lower elastic member. The figure which piles up the sheet | seat to form, (c) is the figure which provided the adhesive layer in the outer sheet part and the outer elastic part, (d) is the figure which mounted the absorptive main body in the outer sheet part and the outer elastic part, ( (e) is the figure which has arrange | positioned the upper elastic member in the sheet | seat which forms an inner side elastic part on an absorptive main body, (f) is the figure which pinched | interposed the to-be-adhered part of the absorptive main body with the outer sheet | seat part. (A) is a perspective view which shows the expansion | deployment state of the conventional underpants type disposable diaper, (b) is sectional drawing of (a). Sectional drawing of the underpants type disposable diaper in 2nd Embodiment. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 2nd Embodiment, (a) is the figure which has arrange | positioned the lower elastic member in the outer sheet | seat part, (b) is an outer elastic part with respect to a lower elastic member. The figure which piles up the sheet | seat to form, (c) is the figure which provided the adhesive layer in the outer sheet | seat part and the outer elastic part, (d) has mounted an absorptive main body in an outer sheet | seat part and an outer elastic part, and inside The figure which has arrange | positioned the upper elastic member in the sheet | seat which forms an elastic part, (e) is the figure which pinched | interposed the upper elastic member with the sheet | seat, and formed the inner elastic part, (f) is the adherend of an absorptive main body to an inner elastic part FIG. Sectional drawing of the underpants type disposable diaper in 3rd Embodiment. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 3rd Embodiment, (a) is the figure which has arrange | positioned the lower elastic member in the outer sheet | seat part, (b) is an outer elastic part with respect to a lower elastic member. The figure which piles up the sheet | seat to form, (c) is the figure which provided the adhesive layer in the outer sheet | seat part and the outer elastic part, (d) has mounted an absorptive main body in an outer sheet | seat part and an outer elastic part, and inner elasticity The figure which piles up the sheet | seat which forms a part, (e) is a figure which pinches | interposes an upper elastic member with a sheet | seat, and forms an inner elastic part, (f) is an inner elastic part on the to-be-adhered part and outer sheet part of an absorptive main body. Arranged figure. (A) is a plan view showing an unfolded state of a pants-type disposable diaper according to the fourth embodiment, (b) is a cross-sectional view taken along 9B-9B of (a), and (c) corresponds to an adhesive region (a). FIG. Sectional drawing of the underpants type disposable diaper in 5th Embodiment. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 5th Embodiment, (a) arrange | positions an upper elastic member in the upper 2nd area | region of an outer sheet | seat part, and lower elasticity in the lower 2nd area | region of an outer sheet | seat part. The figure which has arrange | positioned a member, (b) is the figure which folded the sheet | seat and pinched | interposed the upper elastic member, and the lower elastic member was fold-folded the sheet | seat, (c) is an outer sheet | seat part and an outer elastic part. The figure which provided the contact bonding layer, (d) is the figure which mounted the absorptive main body in the outside sheet part and the outside elastic part, (e) is the figure which turned up the inside elastic part, (f) is the inside elasticity The figure which turned up the part and formed the pocket. Sectional drawing of the underpants type disposable diaper in 6th Embodiment. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 6th Embodiment, (a) arrange | positions an upper elastic member in the upper 2nd area | region of an outer sheet | seat part, and lower elasticity in the lower 2nd area | region of an outer sheet | seat part. The figure which arranged the member, (b) is the figure which folded the sheet | seat and pinched | interposed the upper elastic member, and the lower elastic member was folded | folded the sheet | seat, (c) is an outer sheet | seat part and an outer elastic part. The figure which provided the contact bonding layer, (d) is the figure which mounted the absorptive main body in the outside sheet part and the outside elastic part, (e) is the figure which turned up the inside elastic part, (f) is the inside elasticity The figure which turned up the part and formed the pocket. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 7th Embodiment, (a) arrange | positions an upper elastic member in the upper 1st area | region of an outer sheet | seat part, and lower elasticity in the lower 1st area | region of an outer sheet | seat part. The figure which has arrange | positioned a member, (b) is the figure which folded the sheet | seat and pinched | interposed the upper elastic member, and the lower elastic member was fold-folded the sheet | seat, (c) is an outer sheet | seat part and an outer elastic part. The figure which provided the contact bonding layer, (d) is the figure which mounted the absorptive main body in the outside sheet part and the outside elastic part, (e) is the figure which turned up the inside elastic part, (f) is the inside elasticity The figure which turned up the part and formed the pocket. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 8th Embodiment, (a) arrange | positions an upper elastic member in the upper 1st area | region of an outer sheet | seat part, and lower elasticity in the lower 1st area | region of an outer sheet | seat part. The figure which arranged the member, (b) is the figure which folded the sheet | seat and pinched | interposed the upper elastic member, and the lower elastic member was folded | folded the sheet | seat, (c) is an outer sheet | seat part and an outer elastic part. The figure which provided the contact bonding layer, (d) is the figure which mounted the absorptive main body in the outside sheet part and the outside elastic part, (e) is the figure which turned up the inside elastic part, (f) is the inside elasticity The figure which turned up the part and formed the pocket. Sectional drawing of the underpants type disposable diaper in 9th Embodiment. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 9th Embodiment, (a) is the figure which has arrange | positioned the lower elastic member in the lower 2nd area | region, (b) is the figure which formed the lower elastic part, (C) is a diagram in which an adhesive layer is provided on the outer sheet portion and the outer elastic portion, (d) is a diagram in which an absorbent main body is placed on the outer sheet portion and the outer elastic portion, and (e) is an inner elastic portion. The figure which shows the state which has arrange | positioned in the upper area equivalent part, (f) is the figure which arrange | positioned the inner side elastic part in the upper area equivalent part, and formed the pocket. Sectional drawing of the underpants type disposable diaper in 10th Embodiment. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 11th Embodiment, (a) is the figure which has arrange | positioned the upper elastic member and the lower elastic member with respect to an outer side sheet | seat part, (b) is an upper elastic member and The figure which piled up the sheet | seat on the lower elastic member, (c) is the figure which provided the adhesive layer in the outer sheet | seat part and the outer elastic part, (d) mounts an absorptive main body in an outer sheet | seat part and an outer elastic part. (E) is a diagram showing a state in which the inner elastic portion is folded back, and (f) is a diagram in which the inner elastic portion is arranged in a portion corresponding to the upper region to form a pocket. Sectional drawing of the underpants type disposable diaper in 12th Embodiment. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 12th Embodiment, (a) is the figure which has arrange | positioned the upper elastic member and the lower elastic member with respect to an outer side sheet | seat part, (b) is an upper elastic member and The figure which piled up one inner sheet part on the lower elastic member, (c) is the figure which provided the adhesion layer in the inner sheet part and the outer elastic part, (d) is the inner sheet part and the outer elastic part The figure which mounted the absorptive main body, (e) is a figure which shows the state which folds an inner side elastic part, (f) is the figure which arrange | positioned the inner side elastic part in the upper area | region equivalent part, and formed the pocket. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 13th Embodiment, (a) is a figure which shows the state which apply | coated the adhesive agent to the 1st adhesion area | region and 3rd adhesion area | region where a to-be-adhered part is piled up, ( (b) is a diagram showing a state in which the adherend is placed in the first and third adhesion regions, (c) is a diagram showing a state where an adhesive is applied to the second adhesion region, and (d). These are figures which show the modification of the application | coating method of the adhesive agent apply | coated to a 2nd adhesion area | region. It is a figure which shows the manufacturing process of the underpants type disposable diaper of 14th Embodiment, (a) is a figure which shows the state which apply | coated the adhesive agent to the 1st adhesion area | region and 3rd adhesion area | region where an adherend part is piled up, ( FIG. 5B is a diagram illustrating a state where an adhesive is applied to the second adhesive region in the upper first region, and FIG. 5C is a diagram illustrating a modification of the method for applying the adhesive applied to the second adhesive region. (A) is a plan view showing an unfolded state of the pants-type disposable diaper in the fifteenth embodiment, (b) is a cross-sectional view taken along the line 24B-24B of (a), and (c) is an adhesive area of the upper region ( ) Is a plan view corresponding to (a), and (d) is a plan view corresponding to (a).

With reference to FIG. 1 thru | or FIG.24 (d), the underpants type disposable diaper in embodiment which actualized the disposable diaper in this invention is demonstrated.
[First Embodiment]
As shown in FIGS. 1 to 2D, a pants-type disposable diaper 10 (hereinafter simply referred to as “diaper 10”) includes a front body 10F having a shape that follows the shape of the abdomen of the human body, and a back shape of the human body. A back body 10R having a shape that follows the back, and a crotch 10C that connects the front body 10F and the back body 10R.

The front body 10F and the back body 10R constitute a waistline portion 10W that surrounds the waistline portion of the human body, and the waistline portion 10W is positioned on the opposite side of the crotch portion 10C in the vertical direction, with the waistline opening 10A at the upper end. It has. The left and right side portions of the front body 10F, the left and right side portions of the back body 10R, and the left and right ends of the crotch portion 10C form a pair of left and right leg openings 10L having a shape surrounding the thigh portion of the human body. ing. Further, both ends of the front body 10 F and both ends of the back body 10 R are joined to each other so as to form a joint 11 in the waistline direction.

2A is a plan view showing the unfolded state of the pants-type disposable diaper, FIG. 2B is a cross-sectional view taken along the line 2B-2B of FIG. 2A, and FIG. 2A is a plan view corresponding to FIG. 2A, and FIG. 2D is a plan view corresponding to FIG. In FIG. 2B, the right side is the side facing the diaper wearer's skin. That is, in the diaper 10 shown in FIG. 2 (b), the right side surface corresponds to the inner side surface arranged to face the wearer's skin, and the left side surface is arranged on the side opposite to the skin. Corresponds to the outer surface.

The front body 10F is composed of a first exterior body 12F as a first exterior part, and the rear body 10R is composed of a second exterior body 12R as a second exterior part. Hereinafter, the first exterior body 12F and the second exterior body 12R may be simply referred to as the exterior body 12, respectively.

The exterior body 12 has a rectangular shape whose longitudinal direction is the waistline direction, and includes an upper region 12U and a lower region 12D. Each of the upper region 12U and the lower region 12D includes a sheet constituting the exterior body 12, and an elastic member 15 (upper elastic member 15U, lower elastic member 15D) sandwiched between the sheets constituting the exterior body 12. ing. The sheet constituting the outer package is, for example, a nonwoven fabric made of synthetic fibers made from polyethylene, polypropylene, polyester, or other thermoplastic resin, and may be a liquid-permeable sheet or liquid-impermeable sheet. Good. The elastic member 15 is an elastic body formed of one or more materials selected from natural rubber, synthetic rubber, urethane, and the like, and is formed in a thread shape, a string shape, a net shape, or a flat shape. A plurality of elastic members 15 extend along the waistline direction in parallel with each other.

1st exterior body 12F and 2nd exterior body 12R are connected by the absorptive main body 16 which comprises 10C of crotch parts. The absorptive main body 16 has a rectangular shape whose longitudinal direction is the front-rear direction. The absorbent main body 16 includes a back sheet 17 having liquid impermeability, an absorber 18, and a top sheet 19 having liquid permeability. In the diaper 10, the top sheet 19 is arrange | positioned inside so that a wearer's skin may be contact | connected, and the back sheet | seat 17 is arrange | positioned outside. And in the diaper 10, it has overlapped in order of the back sheet | seat 17, the absorber 18, and the top sheet 19 from the outer side. Furthermore, a non-woven fabric may be arranged on the outside of the back sheet 17 in order to improve the touch feeling.

The material for forming the back sheet 17 is, for example, a film made of polyethylene resin having liquid impermeability. The back sheet 17 is formed with a large number of fine holes to ensure air permeability. The material forming the top sheet 19 is one or more materials selected from, for example, a woven fabric, a nonwoven fabric, and a porous film. The top sheet 19 is made of, for example, a non-woven fabric having liquid permeability composed of fibers of thermoplastic resin such as polypropylene, polyethylene, polyester, and nylon and subjected to hydrophilic treatment. .

The absorber 18 has an elongated band shape so as to straddle the front body 10F, the crotch 10C, and the back body 10R. The material forming the absorbent body 18 is an absorbent material such as flap pulp, superabsorbent polymer, hydrophilic sheet, and the like. The absorbent body 18 is wrapped with a core wrap, and is disposed and joined between the back sheet 17 and the top sheet 19.

The region overlapping the exterior body 12 at the front end portion and the rear end portion of the absorbent main body 16 corresponds to the adherend portion 16A to which the sheet constituting the exterior body 12 is adhered. The absorbent main body 16 includes a three-dimensional gather 21 that is disposed at both side edge portions of the top sheet 19 and extends in the front-rear direction. The three-dimensional gather 21 includes a side sheet 21S and an elastic member 21E disposed along the side sheet 21S. Specifically, the side sheet 21 S is a long sheet body that extends in the front-rear direction including a liquid-impermeable nonwoven fabric or the like. The side sheet 21S has a front end portion that overlaps the first exterior body 12F and a rear end portion that overlaps the second exterior body 12R. When the elastic member 21E contracts, the side seat 21S rises from the top sheet 19 toward the wearer's skin and is positioned around the leg opening 10L.

As shown in FIGS. 2 (a) and 2 (b), each of the first exterior body 12F and the second exterior body 12R includes an upper region 12U and a lower region 12D. The upper region 12U constitutes the waistline opening 10A and a part of the waistline portion 10W, and the lower region 12D constitutes a part of the waistline portion 10W. In the upper region 12U, the upper elastic member 15U is disposed on the inner side with respect to the absorbent main body 16, that is, on the side facing the top sheet 19. In the lower region 12D, the lower elastic member 15D is disposed on the outer side with respect to the absorbent main body 16, that is, on the side facing the back sheet 17. The solid gather 21 extends so as to overlap at least the lower region 12D among the lower region 12D and the upper region 12U. As shown in FIG. 2A, the three-dimensional gather 21 extends to a boundary portion between the lower region 12D and the upper region 12U. Accordingly, the three-dimensional gather 21 is pressed by the lower region 12D so as to be in close contact with the skin. The side sheet 21S of the three-dimensional gather 21 is folded back so as to sandwich the elastic member 21E, and the front end portion and the rear end portion of the folded side sheet 21S are sealed by the seal portions 23, respectively.

Further, the upper elastic member 15U in the upper region 12U extends over the entire length in the waistline direction of the sheet having a longitudinal direction coinciding with the waistline direction, and improves the adhesion between the upper region 12U and the skin. The lower elastic member 15D in the lower region 12D also extends over the entire length in the waistline direction of the sheet having a longitudinal direction coinciding with the waistline direction. As shown in FIGS. 2B and 2C, the lower region 12 D is directly bonded to the outer surface of the bonded portion 16 A in the absorbent main body 16. A fold 16B having a fine crease shape is formed in the bonded portion 16A bonded to the lower region 12D in accordance with the contraction of the lower elastic member 15D. The pleat 16B has a groove shape extending in the vertical direction so as not to disappear even when the absorber 18 swells.

The upper elastic member 15U forms a waist gather at a portion of the waistline portion 10W close to the waistline opening 10A, and the remaining part of the upper elastic member 15U and the lower elastic member 15D form a shearing gather.

As shown in FIG. 2 (b), the upper region 12U includes an inner elastic portion 27 formed by sandwiching the upper elastic member 15U with a sheet, and an outer sheet portion 26 located on the outer side. The lower region 12D includes an outer elastic portion 28 formed by sandwiching the lower elastic member 15D between sheets, an upper region 12U, and a series of single outer sheet portions 26.

The outer sheet portion 26 is a single sheet that is located on the outermost side opposite to the wearer's skin and is folded inwardly at the waistline opening 10A to be located on the inner side closest to the wearer's skin. is there. Specifically, the outer sheet portion 26 extends from the lower region 12D to the upper region 12U on the outer side, is folded at the trunk opening 10A, and extends to the upper region 12U on the inner side. The outer sheet portion 26 functions as a sheet that connects the upper region 12U and the lower region 12D.

The inner elastic part 27 of the upper region 12U is located on the inner side with respect to the absorbent main body 16, and is formed by sandwiching the upper elastic member 15U between the outer sheet part 26 and the sheet 27A located on the side closest to the wearer's skin. Is done. The portion of the inner elastic portion 27 that faces the bonded portion 16A of the absorbent main body 16 corresponds to a non-bonded region that is not bonded to the bonded portion 16A.

The outer elastic portion 28 of the lower region 12D is located outside the absorbent main body 16, and is formed by sandwiching the lower elastic member 15D between the outer sheet portion 26 and the sheet 28A. The region facing the bonded portion 16A in the outer elastic portion 28 is bonded by the bonding layer 25 to the entire corresponding region in the bonded portion 16A.

As shown in FIG. 2C, that is, in the upper region 12U, the outer sheet portion 26 includes a first adhesive region 22A and an outer surface of the adherend portion 16A of the absorbent main body 16 and the first adhesive region 22A. And a second adhesion region 22B to which the sheet 27A of the inner elastic portion 27 is adhered. The second bonding region 22B has a concave shape that opens toward the crotch portion 10C when the bonded portion 16A of the absorbent main body 16 is disposed in the first bonding region 22A. In other words, the second adhesive region 22B has a shape that is recessed toward the side opposite to the crotch portion 10C. The portion of the inner elastic portion 27 corresponding to the inner portion of the second bonding region 22B having a concave shape corresponds to a non-bonding region that is not bonded to the inner surface of the bonded portion 16A on the side close to the wearer's skin. That is, in the upper region 12U, the bonded portion 16A of the absorbent main body 16 faces the outer surface bonded to the first bonding region 22A of the outer sheet portion 26 without being bonded to the sheet 27A of the inner elastic portion 27. And an inner surface. Thereby, a pocket 30 is formed on the adherend portion 16A between the sheet 27A of the inner elastic portion 27 and the absorbent main body 16. The pocket 30 has an open end that opens toward the crotch 10C, and is configured to accommodate excrement that moves in the direction of the stomach or back. The second adhesion region 22B includes a belt-like region 34 having a predetermined width between the waistline opening 10A and the front-rear direction tip portion of the adherend portion 16A, and excreta accommodated in the pocket 30 opens to the waistline. Leaking toward the portion 10A is suppressed.

The outer sheet portion 26 and the sheet 27A, which are sheet portions on the skin side (side closer to the wearer's skin) forming the pocket 30, are configured by hydrophobic sheets because they are portions that contain excrement. Preferably it is. Thereby, it can suppress that the excretion in the pocket 30 oozes out to the skin side.

2D, in the lower region 12D, the outer elastic portion 28 has a third adhesion region 22C that is adhered to the outer surface of the adherend portion 16A of the absorbent main body 16. As described above, the outer elastic portion 28 is directly bonded to the outer surface of the bonded portion 16A, so that the fold 16B is formed in the portion of the bonded portion 16A closer to the crotch than the first bonding region 22A forming the pocket 30. Will be.

Next, a method for manufacturing the diaper 10 will be described. As shown in FIG. 3A, the outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here includes an upper region equivalent portion 31 corresponding to the upper region 12U and a lower region equivalent portion 32 corresponding to the lower region 12D. In the lower region equivalent portion 32, the lower elastic member 15D is disposed in an extended state. As shown in FIG. 3B, an adhesive 33 such as a hot melt adhesive is applied to the lower region equivalent portion 32, and a sheet 28 A that forms the outer elastic portion 28 is bonded. Alternatively, the lower elastic member 15 D coated with the adhesive 33 is disposed in the lower region equivalent portion 32, and the sheet 28 A is overlaid on the lower region equivalent portion 32. Accordingly, the lower elastic member 15D is sandwiched between the outer sheet portion 26 and the sheet 28A, and the outer elastic portion 28 is formed in the outer sheet portion 26 in the lower region equivalent portion 32.

As shown in FIG. 3C, the first adhesive region 22A in the upper region equivalent portion 31 and the third adhesive region 22C in the lower region equivalent portion 32 and the second adhesive region 22B in the upper region equivalent portion 31 are An adhesive layer 25 is formed. As shown in FIG. 3 (d), the adherend 16 A of the absorbent main body 16 is placed across the upper region equivalent portion 31 and the lower region equivalent portion 32.

Specifically, in the upper region equivalent portion 31, the bonded portion 16 A is bonded to the first bonding region 22 A of the outer elastic portion 28. Further, in the lower region equivalent portion 32, the bonded portion 16A is bonded to the third bonding region 22C continuous with the first bonding region 22A.

Then, the sheet 27A forming the inner elastic portion 27 is bonded to the second bonding region 22B of the upper region corresponding portion 31 from above the bonded portion 16A. The sheet 27A is not bonded to the bonded portion 16A.

Here, the same adhesive is applied to the first adhesive region 22A and the third adhesive region 22C to which the bonded portion 16A of the absorbent main body 16 is bonded and the second adhesive region 22B to which the sheet 27A is bonded at a time. You may make it do. Or you may make it apply | coat an adhesive agent with a different adhesive agent and a different application | coating method.

Since the first bonding region 22A and the third bonding region 22C are regions to which the bonded portion 16A is bonded, it is preferable that the first bonding region 22A and the third bonding region 22C be firmly bonded. On the other hand, since the second bonding region 22B is a portion constituting the waistline portion 10W, it is preferable that the second bonding region 22B is bonded so as not to impair elasticity or flexibility in order to improve the wearing feeling.

Therefore, the first adhesive region 22A and the third adhesive region 22C use a first adhesive such as a hot melt adhesive having a high adhesive strength, and the second adhesive region 22B has a hot melt having a lower adhesive force than the first adhesive. A second adhesive such as an adhesive may be used. Thereby, the first bonding region 22A and the third bonding region 22C can firmly bond the bonded portion 16A, and the second bonding region 22B bonds the sheet 27A so as not to impair elasticity or flexibility. can do.

Even in the case of using the same adhesive (which may be either the first adhesive or the second adhesive), the first adhesive region 22A, the third adhesive region 22C, and the second adhesive region 22B Similar effects can be obtained by varying the amount of adhesive applied. That is, the first adhesive region 22 A and the third adhesive region 22 C can adhere the adhesive part 16 A to the outer sheet part 26 by applying an adhesive to the entire surface using a roller. When a roller is used, the adhesive can be applied cleanly on the edge portion. On the other hand, the second adhesive region 22B may be applied using a spray or the like to reduce the amount of adhesive. In the second adhesive region 22B, the adhesive may be applied in a spiral shape or a stripe shape. By such a method, the amount of adhesive to be applied is reduced, and the second adhesive region 22B can adhere the sheet 27A so as not to impair elasticity or flexibility.

As shown in FIG. 3 (e), the upper elastic member 15U is disposed in an extended state on the sheet 27A, and an adhesive such as a hot melt adhesive is applied. As shown in FIG. 3F, the outer sheet portion 26 is folded in half and bonded to the sheet 27A. Alternatively, the upper elastic member 15U to which the adhesive is applied is disposed on the sheet 27A, and the outer sheet portion 26 is folded in half and bonded to the sheet 27A. Accordingly, the upper elastic member 15U is sandwiched between the outer sheet portion 26 and the sheet 27A. In the upper region equivalent portion 31, the inner elastic portion 27 is disposed on the inner side with respect to the absorbent main body 16. And the inner side elastic part 27 is not adhere | attached with respect to the to-be-adhered part 16A, Between the to-be-adhered part 16A and the inner side elastic part 27, the pocket 30 which has the opening end opened toward a crotch part is provided. It is formed.

The first exterior body 12F and the second exterior body 12R are bonded to the absorbent main body 16 through the steps described above. Thereafter, both end portions of the first exterior body 12F and both end portions of the second exterior body 12R are joined to each other in the waistline direction to form the joint portion 11.

As described above, according to the first embodiment, the effects listed below can be obtained.
(1) As shown in FIGS. 4 (a) and 4 (b), in the conventional pants-type disposable diaper, the exterior body 12 is directly bonded to the absorbent main body 16 by the bonding region 24. Therefore, in the conventional diaper, the degree of freedom of expansion and contraction of the elastic member 15 is reduced by integrating the absorbent main body 16 and the outer package 12 in the bonding region 24 between the absorbent main body 16 and the outer package 12. Further, the adhesion with the skin is deteriorated, and the followability to the movement of the wearer is deteriorated.

In contrast, in the upper region 12U of the diaper 10, the absorbent main body 16 and the inner elastic portion 27 are not directly bonded, but the inner elastic portion 27 is bonded to the outer sheet portion 26. Thus, the upper elastic member 15 U can freely expand and contract in the exterior body 12 by eliminating the direct adhesion portion between the exterior body 12 and the absorbent body 16. Therefore, in the diaper 10, adhesiveness with skin improves and it can suppress that the followable | trackability with respect to a wearer's motion worsens. As a result, leakage from the waistline can be suppressed.

(2) In the upper region 12U, the inner elastic portion 27 and the absorbent main body 16 are not directly bonded. Therefore, it can suppress that the absorptive main body 16 shrink | contracts by shrinkage | contraction of the upper elastic member 15U of the inner side elastic part 27. FIG. Therefore, the touch can be improved.

(3) In the lower region 12D, the outer elastic portion 28 is disposed on the outer side with respect to the absorbent main body 16, and is directly bonded to the adherend portion 16A of the absorbent main body 16. Therefore, in the adherend portion 16A and its peripheral portion, a pleat 16B extending in the front-rear direction of the absorbent main body 16 on the surface of the absorbent main body 16 on the side close to the wearer's skin in accordance with the contraction of the lower elastic member 15D. Is formed. Thereby, in the diaper 10, excrement can be guide | induced to the pocket 30 by the pleat 16B. Since the entire corresponding region of the outer elastic portion 28 facing the adherend portion 16A is bonded to the adherend portion 16A, the pleat 16B can be reliably formed. Furthermore, since the lower elastic member 15D is disposed in an extended region in the lower region 12D that overlaps the absorbent main body 16, a plurality of pleats 16B can be reliably formed in the bonded portion 16A.

(4) Since the pleat 16B is not formed in the upper region 12U, excrement transmitted between the inner elastic portion 27 and the adherend portion 16A is absorbed by the absorbent main body 16 in the pocket 30 and returned to the crotch portion 10C side. It becomes difficult. That is, the absorption region of the adherend portion 16A can be used effectively between the inner elastic portion 27 and the adherend portion 16A. And since the inner side elastic part 27 contacts a wearer's skin, skin does not get wet and it becomes difficult to raise | generate a skin irritation.

(5) Since the outer sheet portion 26 and the sheet 27A of the inner elastic portion 27 are directly bonded around the pocket 30, the area of the second bonding region 22B is increased. Therefore, it can suppress that excrement leaks from an adhesion field rather than a conventional product. The second adhesive region 22B also includes a belt-like region 34 between the waistline opening 10A and the pocket 30. The pocket 30 can suppress the excrement accommodated in the pocket 30 from leaking toward the waistline opening 10 A by the belt-shaped region 34.

(6) The pocket 30 has the same size as the width of the absorbent main body 16. That is, at the position where the pocket 30 is formed, a part of the bonded portion 16A is not used as the bonding region. Therefore, it can suppress that the pocket 30 becomes small.

(7) Since the absorbent main body 16 can be covered with the outer sheet portion 26, the design can be improved.
(8) Since the series of single outer sheet portions 26 are provided across the upper region 12U and the lower region 12D, it is possible to reduce the number of parts and improve the production efficiency.

(9) The upper region 12U and the lower region 12D are formed in series in the outer sheet portion 26, and formed when the upper region 12U and the lower region 12D are divided into two at the boundary portion in the vicinity of the joint portion 11 on both the left and right sides. No gap is generated. Therefore, even when the diaper 10 is worn, the leg does not enter the gap between the upper region 12U and the lower region 12D, and it is possible to prevent the diaper 10 from becoming difficult to wear.

(10) When the diaper 10 is removed, the joint 11 is broken. Also in the junction part 11, since it is not isolate | separated into the upper area | region 12U and the lower area | region 12D, the junction part 11 can be broken by one operation | work.

(11) Although the upper region 12U has a non-adhesive region that is not bonded to the absorbent body 16, the outer sheet portion 26 located on the inner side closest to the skin of the upper region 12U and the outer sheet located on the outermost side The part 26 is composed of a series of single sheets. Therefore, it is possible to suppress excrement from leaking between the absorbent main body 16 and the upper region 12U to the outside.

[Second Embodiment]
As shown in FIG. 5, the diaper 40 of 2nd Embodiment has the structure by which the outer side sheet | seat part 26 was located in the outermost side, and the upper elastic member 15U was pinched | interposed with a series of single sheet | seats 27A. In FIG. 5, the right side is the side (inside) facing the diaper wearer's skin. Hereinafter, the manufacturing method of the diaper 40 is demonstrated.

As shown in FIG. 6A, an outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here includes an upper region equivalent portion 31 and a lower region equivalent portion 32. The lower elastic member 15D is disposed in the lower region equivalent portion 32 in an extended state. As shown in FIG. 6 (b), an adhesive 33 such as a hot melt adhesive is applied to the lower region equivalent portion 32, and a sheet 28 A that forms the outer elastic portion 28 is adhered. Alternatively, the lower elastic member 15 D coated with the adhesive 33 is disposed in the lower region equivalent portion 32, and the sheet 28 A is overlaid on the lower region equivalent portion 32. Accordingly, the lower elastic member 15D is sandwiched between the outer sheet portion 26 and the sheet 28A, and the outer elastic portion 28 is formed in the outer sheet portion 26 in the lower region equivalent portion 32.

As shown in FIG. 6C, an adhesive layer 25 is formed in the first adhesive region 22A and the second adhesive region 22B of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The As shown in FIG. 6D, the adherend 16A of the absorbent main body 16 is placed across the first adhesive region 22A of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The

Here, a series of single sheets 27A sandwiching the upper elastic member 15U is prepared. The sheet 27A has a size corresponding to the upper region equivalent portion 31 when folded in half to sandwich the upper elastic member 15U. The upper elastic member 15U is disposed on the seat 27A in an extended state. As shown in FIG. 6E, the sheet 27A is folded in half after an adhesive such as a hot melt adhesive is applied, and sandwiches the upper elastic member 15U. Alternatively, the upper elastic member 15U to which the adhesive is applied is disposed on the sheet 27A, and the sheet 27A is bent in half. Thereby, the inner side elastic part 27 is formed. As shown in FIG. 6F, the inner elastic portion 27 is bonded to the second bonding region 22B of the outer sheet portion 26 from above the bonded portion 16A. Therefore, the inner elastic portion 27 is not bonded to the bonded portion 16A. Thereby, in the upper region equivalent portion 31, the inner elastic portion 27 is disposed inside the absorbent main body 16. And the inner side elastic part 27 is not adhere | attached with respect to the to-be-adhered part 16A, Between the to-be-adhered part 16A and the inner side elastic part 27, the pocket 30 which has the opening end opened toward a crotch part is provided. It is formed.

Here, the first bonding region 22A and the third bonding region 22C to which the bonded portion 16A of the absorbent main body 16 is bonded and the second bonding region 22B to which the inner elastic portion 27 is bonded are bonded at the same time. An agent may be applied.

Alternatively, as described above, the adhesive may be applied using a different adhesive or a different application method. In this case, for example, the bonded portion 16A is bonded to the first bonding region 22A and the third bonding region 22C with a high bonding force, and the inner elastic portion 27 is bonded to the second bonding region 22B. Is adhered with a low adhesive force. Accordingly, the bonded portion 16A can be firmly bonded to the first bonding region 22A and the third bonding region 22C, and the inner elastic portion 27 has elasticity or flexibility with respect to the second bonding region 22B. It can be bonded so as not to damage.

In the diaper 40 as described above, the following effects can be further obtained.
(12) Since the upper elastic member 15U is sandwiched by one sheet 27A, it is possible to reduce the number of parts and improve the production efficiency.

[Third Embodiment]
As shown in FIG. 7, the diaper 50 of the third embodiment sandwiches the upper elastic member 15U between two

separate sheets

27A and 27B, and the two

sheets

27A and 27B are both outer sheet portions 26. And a separate body. In FIG. 7, the right side is the side (inside) facing the diaper wearer's skin. Hereinafter, the manufacturing method of the diaper 50 is demonstrated.

As shown in FIG. 8A, the outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here includes an upper region equivalent portion 31 and a lower region equivalent portion 32. The lower elastic member 15D is disposed in the lower region equivalent portion 32 in an extended state. As shown in FIG. 8B, an adhesive 33 such as a hot-melt adhesive is applied to the lower region equivalent portion 32, and a sheet 28A forming the outer elastic portion 28 is adhered. Alternatively, the lower elastic member 15 D coated with the adhesive 33 is disposed in the lower region equivalent portion 32, and the sheet 28 A is overlaid on the lower region equivalent portion 32. Thus, the lower elastic member 15D is sandwiched between the outer sheet portion 26 and the sheet 28A, and the outer elastic portion 28 is formed in the outer sheet portion 26 in the lower region equivalent portion 32.

As shown in FIG. 8C, an adhesive layer 25 is formed in the first adhesive region 22A and the second adhesive region 22B of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The As shown in FIG. 8D, the adherend 16A of the absorbent main body 16 is placed across the first adhesion region 22A of the upper region equivalent portion 31 and the third adhesion region 22C of the lower region equivalent portion 32. The Here, a sheet 27A having the size of the upper region equivalent portion 31 is prepared. Then, the sheet 27A is bonded to the second bonding region 22B of the outer sheet portion 26 from above the bonded portion 16A. Therefore, the sheet 27A is not bonded to the bonded portion 16A.

Here, the first adhesive region 22A and the third adhesive region 22C to which the bonded portion 16A of the absorbent main body 16 is bonded and the second adhesive region 22B to which the sheet 27A is bonded are applied with the same adhesive at a time. You may make it apply | coat.

Alternatively, as described above, the adhesive may be applied using a different adhesive or a different application method. In this case, for example, the bonded portion 16A is bonded to the first bonding region 22A and the third bonding region 22C with a high bonding force, and the sheet 27A is bonded to the second bonding region 22B. It is made to adhere with low adhesive force. As a result, the bonded portion 16A can be firmly bonded to the first bonding region 22A and the third bonding region 22C, and the sheet 27A does not lose elasticity or flexibility to the second bonding region 22B. Can be adhered.

As shown in FIG. 8 (e), the upper elastic member 15U is disposed in an extended state on the sheet 27A, and an adhesive such as a hot melt adhesive is applied. As shown in FIG. 8 (f), thereafter, a further sheet 27 B having the size of the upper region equivalent portion 31 is overlaid, and the upper elastic member 15 U is sandwiched between the sheet 27 A and the sheet 27 B. Alternatively, the upper elastic member 15U coated with an adhesive is disposed on the sheet 27A, and the sheet 27B is overlaid. Thereby, the inner side elastic part 27 is formed. Thereby, in the upper region equivalent portion 31, the inner elastic portion 27 is disposed inside the absorbent main body 16. And the inner side elastic part 27 is not adhere | attached with respect to the to-be-adhered part 16A, Between the to-be-adhered part 16A and the inner side elastic part 27, the pocket 30 which has the opening end opened toward a crotch part is provided. It is formed.

In the diaper 50 as described above, the following effects can be further obtained.
(13) Since the outer sheet portion 26, the sheet 27A, and the sheet 27B are used separately, each of the outer sheet portion 26, the sheet 27A, and the sheet 27B can be used effectively. For example, sheets of different materials can be used for the outer sheet portion 26, the sheet 27A, and the sheet 27B. In this case, as an example, a soft sheet can be used for the sheet 27B in contact with the skin, and a hard sheet having high water resistance and durability can be used for the outer sheet portion 26 and the sheet 27A.

[Fourth Embodiment]
FIG. 9A is a plan view showing a developed state of the pants-type disposable diaper according to the fourth embodiment, FIG. 9B is a cross-sectional view taken along line 9B-9B in FIG. 9A, and FIG. FIG. 10 is a plan view showing an adhesion region corresponding to FIG. In FIG. 9B, the right side is the side (inside) facing the skin of the diaper wearer.

As shown in FIGS. 9A and 9B, in the pants-type disposable diaper 60, the outer sheet portion 26 located on the outermost side is the first exterior body 12F, the absorbent main body 16, and the second exterior body. It is arranged over 12R. A pair of cut-out end portions 61 having a semicircular arc shape that forms the leg opening 10L are formed at the center of the left and right side portions along the front-rear direction in the outer sheet portion 26. The adhesion region of the outer sheet portion 26 includes the bonded portion 16A and the inner elastic portion 27 (

regions

22A and 22B) in the upper region 12U, the region corresponding to the bonded portion 16A in the outer elastic portion 28 (region 22C), and And a portion of the crotch portion 10C (region 22D) of the absorbent main body 16 between the lower region 12D of the first exterior body 12F and the lower region 12D of the second exterior body 12R.

In the pants-type disposable diaper 60 configured as described above, the same effects as the above-described pants-type disposable diaper can be achieved.
In addition, the adhesion area | region of the outer side sheet | seat part 26 may be made to apply | coat the same adhesive agent at once, and you may make it apply | coat an adhesive agent with a different adhesive agent and a different application | coating method according to an area | region. When applying an adhesive by a different adhesive or a different application method, the region 22A, the region 22C, and the region 22D of the outer sheet portion 26 to be bonded to the absorbent main body 16 are bonded with high adhesive force. The region 22B bonded to the sheet 27A of the inner elastic portion 27 is bonded with a low adhesive force. Accordingly, the outer sheet portion 26 can be firmly bonded at a portion overlapping the absorbent main body 16, and can be bonded at a portion constituting the waistline portion 10W so as not to lose elasticity or flexibility.

[Fifth Embodiment]
As shown in FIG. 10, in the diaper 70 of the fifth embodiment, one outer sheet portion 26 sandwiches the upper elastic member 15U and the lower elastic member 15D. Further, the outer sheet portion 26 is located on the outermost side opposite to the skin, and is folded back at the waistline opening 10A and located on the side closest to the skin. The outer sheet portion 26 extends from the lower region 12D to the upper region 12U on the outermost side, and is bent inward on the side close to the crotch portion 10C of the outer elastic portion 28 to form an end portion. On the inner side close to the skin, an end portion is formed by being bent toward the absorbent main body 16 on the side closer to the crotch portion 10C of the inner elastic portion 27. In FIG. 10, the right side is the side (inside) facing the diaper wearer's skin. Hereinafter, the manufacturing method of the diaper 70 is demonstrated.

As shown in FIG. 11A, the outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here includes an upper region equivalent portion 31 and a lower region equivalent portion 32. The upper region equivalent portion 31 includes an upper first region 31A, an upper second region 31B, and an upper third region 31C. The upper first region 31A and the upper second region 31B serve as sheets that sandwich the upper elastic member 15U. The upper third region 31 C is a region located outside the absorbent main body 16. The lower region equivalent portion 32 includes a lower first region 32A and a lower second region 32B, and the lower first region 32A is a region located on the side close to the skin (inside the absorbent main body 16). Thus, the lower second region 32B is a region where the lower elastic member 15D is disposed.

In the upper second region 31B, the upper elastic member 15U is extended and disposed on the front surface 31B ′ in FIG. 11A, and then the adhesive 33 is applied. Further, the lower second region 32B is disposed on the front surface 32B ′ in the middle of FIG. 11A with the lower elastic member 15D extended, and then the adhesive 33 is applied. The adhesive 33 may be applied to the upper first region 31A instead of the upper second region 31B, or may be applied to both the upper first region 31A and the upper second region 31B. Good. Similarly, the adhesive 33 may be applied to the lower first region 32A instead of the lower second region 32B, or may be applied to both the lower first region 32A and the lower second region 32B. Also good. As shown in FIG. 11B, the upper first region 31A is valley-folded so as to overlap the upper second region 31B, thereby forming an inner elastic portion 27 in which the upper elastic member 15U is sandwiched between sheets. The lower first region 32A is valley-folded so as to overlap the lower second region 32B, thereby forming an outer elastic portion 28 in which the lower elastic member 15D is sandwiched between sheets. The upper elastic member 15U to which the adhesive 33 is applied may be disposed on the surface 31B ′ of the upper second region 31B, and the upper first region 31A may be valley-folded so as to overlap the upper second region 31B. . Further, the lower elastic member 15D coated with the adhesive 33 may be disposed on the surface 32B ′ of the lower second region 32B, and the lower first region 32A may be folded in a valley so as to overlap the lower second region 32B. .

As shown in FIG. 11C, an adhesive layer 25 is formed in the first adhesive region 22A and the second adhesive region 22B of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The As shown in FIG. 11D, the adherend 16A of the absorbent main body 16 is placed across the first adhesion region 22A of the upper region equivalent portion 31 and the third adhesion region 22C of the lower region equivalent portion 32. The

As shown in FIG. 11 (e), the upper first region 31A and the upper second region 31B forming the inner elastic portion 27 with the upper elastic member 15U interposed therebetween are valley-folded into an upper third region 31C. Overlaid. As shown in FIG. 11 (f), the inner elastic portion 27 is not bonded to the bonded portion 16A, and an opening is formed between the bonded portion 16A and the inner elastic portion 27 toward the crotch portion. A pocket 30 having an open end is formed.

Here, the first bonding region 22A and the third bonding region 22C to which the bonded portion 16A of the absorbent main body 16 is bonded and the second first bonding region 22B to which the upper first region 31A (inner elastic portion 27) is bonded. The same adhesive may be applied at a time.

Alternatively, as described above, the adhesive may be applied using a different adhesive or a different application method. In this case, for example, the bonded portion 16A is bonded to the first bonding region 22A and the third bonding region 22C with a high bonding force, and the upper first region is bonded to the second bonding region 22B. 31A (inner elastic part 27) is made to adhere | attach with this with low adhesive force. As a result, the bonded portion 16A can be firmly bonded to the first bonding region 22A and the third bonding region 22C, and the upper first region 31A (inner elastic portion 27) is attached to the second bonding region 22B. On the other hand, it can be bonded so as not to impair elasticity or flexibility.

In the diaper 70 as described above, the following effects can be further obtained.
(14) Since one outer sheet portion 26 sandwiches the upper elastic member 15U and the lower elastic member 15D, and further extends across the inner surface and the outer surface of the absorbent main body 16, the number of parts is reduced. And the manufacturing process can be simplified.

[Sixth Embodiment]
As shown in FIG. 12, the diaper 80 of the sixth embodiment is formed by valley-folding one outer sheet portion 26 in the diaper 70 of the fifth embodiment (see FIG. 11A). One outer sheet portion 26 is folded in a mountain. As a result, the outer sheet portion 26 is a portion of the inner elastic portion 27, one end region located on the innermost side (side facing the skin) in contact with the wearer's skin, and a portion of the outer elastic portion 28 opposite to the skin. And the other end region located on the outermost side. In FIG. 12, the right side is the side (inside) facing the skin of the diaper wearer.

As shown in FIG. 13A, an outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here also includes an upper region equivalent portion 31 and a lower region equivalent portion 32. The upper region equivalent portion 31 includes an upper first region 31A, an upper second region 31B, and an upper third region 31C. The lower region equivalent portion 32 includes a lower first region 32A and a lower second region 32B.

In the upper second region 31B, the upper elastic member 15U is extended and disposed on the back surface (back side) 31B ″ in FIG. 13A, and then an adhesive is applied. Further, the lower second region 32B is disposed on the back surface 32B ″ in FIG. 13A in a state where the lower elastic member 15D is extended, and then an adhesive is applied. As shown in FIG. 13B, the upper first region 31A is mountain-folded so as to overlap the upper second region 31B, thereby forming an inner elastic portion 27 in which the upper elastic member 15U is sandwiched between sheets. Further, the lower first region 32A is mountain-folded so as to overlap the lower second region 32B, and the outer elastic portion 28 in which the lower elastic member 15D is sandwiched between the sheets is formed. The upper elastic member 15U to which the adhesive is applied may be disposed on the surface 31B '' of the upper second region 31B, and the upper first region 31A may be folded in a mountain so as to overlap the upper second region 31B. . Further, the lower elastic member 15D to which the adhesive is applied may be disposed on the surface 32B '' of the lower second region 32B, and the lower first region 32A may be folded in a mountain so as to overlap the lower second region 32B. .

As shown in FIG. 13C, an adhesive layer 25 is formed in the first adhesive region 22A and the second adhesive region 22B of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The As shown in FIG. 13 (d), the adherend portion 16A of the absorbent main body 16 is placed across the first adhesive region 22A of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The

As shown in FIG. 13 (e), the upper first region 31A and the upper second region 31B forming the inner elastic portion 27 with the upper elastic member 15U interposed therebetween are valley-folded into an upper third region 31C. Overlaid. As shown in FIG. 13 (f), the inner elastic portion 27 is not bonded to the bonded portion 16A, and an opening is formed between the bonded portion 16A and the inner elastic portion 27 toward the crotch portion. A pocket 30 having an open end is formed.

Here, the first bonding region 22A and the third bonding region 22C to which the bonded portion 16A of the absorbent main body 16 is bonded and the second first bonding region 22B to which the upper first region 31A (inner elastic portion 27) is bonded are described. The same adhesive may be applied at a time.

Even in the diaper 80 as described above, the same effect as the diaper 70 of the fifth embodiment can be obtained.
[Seventh Embodiment]
7th Embodiment is another manufacturing method of the diaper 70 of 5th Embodiment shown in FIG. As shown in FIG. 14A, the outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here also includes an upper region equivalent portion 31 and a lower region equivalent portion 32. The upper region equivalent portion 31 includes an upper first region 31A, an upper second region 31B, and an upper third region 31C. The lower region equivalent portion 32 includes a lower first region 32A and a lower second region 32B.

In the upper first region 31A, the upper elastic member 15U is extended and disposed on the front surface 31A ′ in FIG. 14A, and then the adhesive 33 is applied. Further, the lower first region 32A is disposed on the front surface 32A ′ in the middle of FIG. 14A with the lower elastic member 15D extended, and then the adhesive 33 is applied. As shown in FIG. 14B, the upper first region 31A is valley-folded so as to overlap the upper second region 31B, thereby forming an inner elastic portion 27 in which the upper elastic member 15U is sandwiched between sheets. The lower first region 32A is valley-folded so as to overlap the lower second region 32B, thereby forming an outer elastic portion 28 in which the lower elastic member 15D is sandwiched between sheets. The upper elastic member 15U to which the adhesive 33 is applied may be arranged on the surface 31A ′ of the upper first region 31A, and the upper first region 31A may be folded in a valley so as to overlap the upper second region 31B. . Alternatively, the lower elastic member 15D coated with the adhesive 33 may be disposed on the surface 32A ′ of the lower first region 32A, and the lower first region 32A may be folded in a valley so as to overlap the lower second region 32B. .

As shown in FIG. 14C, the adhesive layer 25 is formed in the first adhesive region 22A and the second adhesive region 22B of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The As shown in FIG. 14D, the adherend 16A of the absorbent main body 16 is placed across the first adhesive region 22A of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The

As shown in FIG. 14E, the upper first region 31A and the upper second region 31B forming the inner elastic portion 27 with the upper elastic member 15U interposed therebetween are valley-folded into an upper third region 31C. Overlaid. As shown in FIG. 14 (f), the inner elastic portion 27 is not bonded to the bonded portion 16A, and an opening is formed between the bonded portion 16A and the inner elastic portion 27 toward the crotch portion. A pocket 30 having an open end is formed.

The diaper 70 of the fifth embodiment can be manufactured also by the manufacturing method as described above.
[Eighth Embodiment]
The eighth embodiment is another method for manufacturing the diaper 80 shown in FIG. As shown in FIG. 15A, the outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here also includes an upper region equivalent portion 31 and a lower region equivalent portion 32. The upper region equivalent portion 31 includes an upper first region 31A, an upper second region 31B, and an upper third region 31C. The lower region equivalent portion 32 includes a lower first region 32A and a lower second region 32B.

In the upper first region 31A, the upper elastic member 15U is extended and disposed on the back surface 31A ″ in FIG. 15A, and then an adhesive is applied. Further, the lower first region 32A is disposed on the back surface 32A ″ in FIG. 15A in a state where the lower elastic member 15D is extended, and then an adhesive is applied. As shown in FIG. 15B, the upper first region 31A is mountain-folded so as to overlap the upper second region 31B, and an inner elastic portion 27 is formed in which the upper elastic member 15U is sandwiched between sheets. Further, the lower first region 32A is mountain-folded so as to overlap the lower second region 32B, and the outer elastic portion 28 in which the lower elastic member 15D is sandwiched between the sheets is formed. The upper elastic member 15U to which the adhesive 33 is applied is arranged on the surface 31A ″ of the upper first region 31A, and the upper first region 31A is mountain-folded so as to overlap the upper second region 31B. Good. Further, the lower elastic member 15D to which the adhesive 33 is applied is arranged on the surface 32A ″ of the lower first region 32A, and the lower first region 32A is mountain-folded so as to overlap the lower second region 32B. Good.

As shown in FIG. 15C, the adhesive layer 25 is formed in the first adhesive region 22A and the second adhesive region 22B of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The As shown in FIG. 15D, the adherend 16A of the absorbent main body 16 is placed across the first adhesion region 22A of the upper region equivalent portion 31 and the third adhesion region 22C of the lower region equivalent portion 32. The

As shown in FIG. 15 (e), the upper first region 31A and the upper second region 31B forming the inner elastic portion 27 with the upper elastic member 15U interposed therebetween are valley-folded into an upper third region 31C. Overlaid. As shown in FIG. 15 (f), the inner elastic portion 27 is not bonded to the bonded portion 16A, and an opening is formed between the bonded portion 16A and the inner elastic portion 27 toward the crotch portion. A pocket 30 having an open end is formed.

Here, the first adhesion region 22A and the third adhesion region 22C to which the bonded portion 16A of the absorbent main body 16 is adhered and the second adhesion region 22B to which the upper second region 31B (inner elastic portion 27) is adhered are defined. The same adhesive may be applied at a time.

Alternatively, as described above, the adhesive may be applied using a different adhesive or a different application method. In this case, for example, the bonded portion 16A is bonded to the first bonding region 22A and the third bonding region 22C with a high bonding force, and the upper second region is bonded to the second bonding region 22B. 31B (inner elastic part 27) is made to adhere | attach with this with low adhesive force. As a result, the bonded portion 16A can be firmly bonded to the first bonding region 22A and the third bonding region 22C, and the upper second region 31B (inner elastic portion 27) is attached to the second bonding region 22B. On the other hand, it can be bonded so as not to impair elasticity or flexibility.

The diaper 80 of the sixth embodiment can be manufactured also by the manufacturing method as described above.
[Ninth Embodiment]
As shown in FIG. 16, the diaper 90 of the ninth embodiment is a modification of the diaper 40 of the second embodiment shown in FIG. 5, and the outer sheet portion 26 is located on the outermost side, and the lower elastic member 15 D is disposed. It has a configuration for sandwiching. In addition, one sheet 27A is folded back at a portion close to the crotch portion 10C and sandwiches the inner elastic portion 27. In FIG. 16, the right side is the side (inner side) facing the diaper wearer's skin. Hereinafter, the manufacturing method of the diaper 90 is demonstrated.

As shown in FIG. 17A, the outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here includes an upper region equivalent portion 31 and a lower region equivalent portion 32. The upper region equivalent portion 31 has a size corresponding to the upper region 12U, and the lower region equivalent portion 32 includes a lower first region 32A and a lower second region 32B.

In the lower second region 32B, the lower elastic member 15D is extended and disposed on the front surface 32B ′ in FIG. 17A, and then the adhesive 33 is applied. As shown in FIG. 17B, the lower first region 32A is valley-folded so as to overlap the lower second region 32B, thereby forming the outer elastic portion 28 in which the lower elastic member 15D is sandwiched between sheets. Note that the lower elastic member 15D coated with the adhesive 33 may be disposed on the surface 32B ′ of the lower second region 32B, and the lower first region 32A may be folded in a valley so as to overlap the lower second region 32B. .

As shown in FIG. 17C, the adhesive layer 25 is formed in the first adhesive region 22A and the second adhesive region 22B of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The As shown in FIG. 17D, the adherend 16A of the absorbent main body 16 is placed across the first adhesive region 22A of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The

As shown in FIG. 17 (e), a series of single sheets 27A sandwiching the upper elastic member 15U is prepared here. The sheet 27A has a size corresponding to the upper region equivalent portion 31 when folded in half to sandwich the upper elastic member 15U. The upper elastic member 15U is disposed on the seat 27A in an extended state. Then, after an adhesive such as a hot-melt adhesive is applied, the sheet 27A is bent in half and sandwiches the upper elastic member 15U. Alternatively, the upper elastic member 15U coated with the adhesive 33 is placed on the sheet 27A in an extended state, and the sheet 27A is bent in half. Thereby, the inner side elastic part 27 is formed. As shown in FIG. 17F, the inner elastic portion 27 is bonded to the second bonding region 22B of the outer sheet portion 26 from above the bonded portion 16A. At this time, the folded sheet 27A is a portion corresponding to the upper region so that the fold is located on the side close to the crotch 10C and the end opposite to the fold is located on the side close to the waistline opening 10A. 31 is arranged. Thus, the inner elastic portion 27 arranged on the upper region equivalent portion 31 is not bonded to the bonded portion 16A, and the crotch portion is between the bonded portion 16A and the inner elastic portion 27. A pocket 30 having an open end that opens toward is formed.

Here, the first bonding region 22A and the third bonding region 22C to which the bonded portion 16A of the absorbent main body 16 is bonded and the second bonding region 22B to which the sheet 27A (inner elastic portion 27) is bonded are at one time. The same adhesive may be applied.

Alternatively, as described above, the adhesive may be applied using a different adhesive or a different application method. In this case, for example, the bonded portion 16A is bonded to the first bonding region 22A and the third bonding region 22C with a high bonding force, and the sheet 27A (inner side) is bonded to the second bonding region 22B. The elastic part 27) is adhered to this with a low adhesive force. Thereby, the adherend portion 16A can be firmly bonded to the first bonding region 22A and the third bonding region 22C, and the sheet 27A (inner elastic portion 27) is elastic to the second bonding region 22B. Or it can adhere | attach so that a softness | flexibility may not be impaired.

In the diaper 90 as described above, the following effects can be further obtained.
(15) Since the upper elastic member 15U is sandwiched by one sheet 27A, it is possible to reduce the number of parts of the inner elastic portion 27 and improve the production efficiency. Further, since the outer elastic portion 28 is formed by the single outer sheet portion 26, the number of parts of the outer elastic portion 28 can be reduced and the production efficiency can be improved.

[Tenth embodiment]
As shown in FIG. 18, the diaper 91 of 10th Embodiment has the inner side elastic part 27 arrange | positioned in the direction opposite to the diaper 90 of 9th Embodiment. Specifically, the fold of the folded sheet 27A is positioned on the side close to the waistline opening 10A, and the end opposite to the fold is positioned on the side close to the crotch 10C. In FIG. 18, the right side is the side (inside) facing the skin of the diaper wearer. Also by such a diaper 91, the effect similar to the diaper 90 of 9th Embodiment can be acquired.

[Eleventh embodiment]
11th Embodiment is a manufacturing method of the diaper 10 of 1st Embodiment, Comprising: It is a manufacturing method different from the manufacturing method of the diaper 10 shown in FIG. As shown in FIG. 19A, the outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here includes an upper region equivalent portion 31 and a lower region equivalent portion 32. The upper region equivalent portion 31 includes an upper first region 31A and an upper second region 31B.

In the upper first region 31A, the upper elastic member 15U is extended and disposed on the front surface 31A ′ in FIG. 19A, and then the adhesive 33 is applied. Further, the lower region equivalent portion 32 is disposed on the front surface 32 ′ in the middle of FIG. 19A with the lower elastic member 15 D extended, and then an adhesive is applied. As shown in FIG. 19B, a sheet 27A forming the inner elastic portion 27 is bonded to the upper first region 31A. In addition, a sheet 28 A that forms the outer elastic portion 28 is bonded to the lower region equivalent portion 32. The upper elastic member 15U to which the adhesive 33 is applied may be disposed on the surface 31A ′ of the upper first region 31A, and the sheet 27A may be disposed on the surface 31A ′. Alternatively, the lower elastic member 15D coated with the adhesive 33 may be disposed on the surface 32A ′ of the lower region equivalent portion 32, and the sheet 28A may be disposed on the surface 32A ′.

As shown in FIG. 19C, in the upper second region 31B of the upper region equivalent portion 31, the first adhesion region 22A and the second adhesion region 22B and the third adhesion region 22C of the lower region equivalent portion 32 The adhesive layer 25 is formed. As shown in FIG. 19 (d), the adherend 16A of the absorbent main body 16 is placed across the first adhesive region 22A of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32. The

As shown in FIG. 19 (e), the inner elastic portion 27 formed by sandwiching the upper elastic member 15U between the sheets is valley-folded and overlapped with the upper second region 31B. As shown in FIG. 19 (f), the inner elastic portion 27 is not bonded to the bonded portion 16A, and an opening is formed between the bonded portion 16A and the inner elastic portion 27 toward the crotch portion. A pocket 30 having an open end is formed.

In the manufacturing method as described above, the following effects can be further obtained.
(16) Compared with the manufacturing method of the diaper 10 shown in FIG. 3, the upper elastic member 15U is directly disposed in the upper first region 31A of the outer sheet portion 26, and then the bonded portion 16A of the absorbent main body 16 is It is placed on the outer sheet portion 26. Therefore, the upper elastic member 15U can be arranged in the aligned upper first region 31A without being affected by the step formed by the bonded portion 16A (see FIG. 19A). That is, in FIG.3 (e), since the upper elastic member 15U is arrange | positioned on the to-be-adhered part 16A of the absorptive main body 16, a level | step difference is formed between the part of the to-be-adhered part 16A and other parts. Therefore, it is necessary to arrange the upper elastic member 15U on the step, and in this respect, it is difficult to arrange the upper elastic member 15U in an aligned state. In this respect, in the present embodiment, the upper elastic member 15U is disposed in the upper first region 31A of the outer sheet portion 26 before the adherend portion 16A of the absorbent main body 16 is disposed. It can be arranged in a simple manner.

[Twelfth embodiment]
As shown in FIG. 20, in the diaper 100 of the twelfth embodiment, the waistline opening 10 A has a double sheet structure with an outer sheet portion 26 and an inner sheet portion 29. When causing the wearer to wear the diaper 100, the worker performs a work of raising the diaper 100 upward by hooking a finger on the open end of the pocket 30. For this reason, there is a possibility that a tensile force acts in the vicinity of the waist opening 10A of the sheet continuous with the inner elastic portion 27, and the portion is broken and broken (see A portion in FIG. 20). Therefore, the diaper 100 has a double structure as the sheet structure of the waistline opening 10A so as to increase the strength. In FIG. 20, the right side is the side (inside) facing the skin of the diaper wearer. In the diaper 100, the outer sheet portion 26 and the inner sheet portion 29 are bonded by the adhesive 25A so that the positions of each other are not shifted. Hereinafter, the manufacturing method of the diaper 100 is demonstrated.

As shown in FIG. 21A, the outer sheet portion 26 is prepared. The outer sheet portion 26 prepared here includes an upper region equivalent portion 31 and a lower region equivalent portion 32. The upper region equivalent portion 31 includes an upper first region 31A and an upper second region 31B.

In the upper first region 31A, the upper elastic member 15U is extended and disposed on the front surface 31A 'in FIG. 21A, and the lower elastic member 15D is extended in the lower region equivalent portion 32. In this state, it is arranged on the front surface 32 ′ in FIG. Then, as shown in FIG. 21 (b), an adhesive 25A is applied to the entire surface of the outer sheet portion 26, and one inner sheet portion 29 is formed so as to cover the upper elastic member 15U and the lower elastic member 15D. Overlaid. Thereby, the adhesive 25A adheres and integrates the outer sheet portion 26 and the inner sheet portion 29 to each other. And the inner side elastic part 27 and the outer side elastic part 28 are formed. The upper elastic member 15U coated with the adhesive 25A is disposed on the surface 31A 'of the upper first region 31A, and the lower elastic member 15D coated with the adhesive 25A is disposed on the surface 32' of the lower region equivalent portion 32. To do. And after apply | coating the adhesive agent 25A to the area | region of the outer sheet | seat part 26 between the upper 1st area | region 31A and the lower area | region equivalent part 32 where the upper elastic member 15U and the lower elastic member 15D are not arrange | positioned, The inner sheet portion 29 may be overlapped over the whole.

As shown in FIG. 21C, the first adhesive region 22A and the second adhesive region 22B in the upper second region 31B of the upper region equivalent portion 31 and the third adhesive region 22C of the lower region equivalent portion 32 include An adhesive layer 25 is formed. As shown in FIG. 21D, the adherend 16A of the absorbent main body 16 is placed across the first adhesion region 22A of the upper region equivalent portion 31 and the third adhesion region 22C of the lower region equivalent portion 32. The

As shown in FIG. 21 (e), the inner elastic portion 27 sandwiching the upper elastic member 15U between the sheets is folded in a valley and overlapped with the upper second region 31B. As shown in FIG. 21 (f), the inner elastic portion 27 is not bonded to the bonded portion 16A, and an opening is formed between the bonded portion 16A and the inner elastic portion 27 toward the crotch portion. A pocket 30 having an open end is formed.

In the diaper 100 as described above, the following effects can be further obtained.
(17) Since the peripheral region of the waistline opening 10A has a double structure of the outer sheet portion 26 and the inner sheet portion 29, the strength can be increased. Therefore, even when the diaper 100 is put on, even if the diaper 100 is pulled up by pulling the finger into the pocket 30, it is possible to prevent the pulling force from causing damage such as opening a hole around the waistline opening 10A. .

[Thirteenth embodiment]
FIG. 22 shows a manufacturing method according to the thirteenth embodiment, and the manufacturing method according to the thirteenth embodiment is a modification of the manufacturing method in the diaper 100 according to the twelfth embodiment. 21 (c) to 21 (d), the first bonding region 22A and the second bonding region 22B in the upper second region 31B of the upper region equivalent portion 31 and the lower region corresponding portion 32 are processed. The adhesive layer 25 is uniformly formed in the third adhesive region 22C. In the thirteenth embodiment, as shown in FIG. 22A, a first adhesive such as a hot-melt adhesive having a high adhesive strength is applied to the first adhesive region 22A and the third adhesive region 22C for adhesion. Layer 25X is formed. Next, as shown in FIG. 22B, the adherend 16A of the absorbent main body 16 is placed across the first adhesion region 22A of the upper region equivalent portion 31 and the third adhesion region 22C of the lower region equivalent portion 32. Placed and glued. The first adhesive is applied to the first adhesive region 22A and the third adhesive region 22C using a roller, for example, so that the edge portion is also applied cleanly, and the bonded portion 16A is attached to the first adhesive region 22A and the third adhesive region. It can be firmly adhered to the region 22C.

Next, as shown in FIG. 22C, the second adhesive region 22B of the upper second region 31B is coated with a second adhesive such as a hot melt adhesive having a lower adhesive strength than the first adhesive. Layer 25Y is formed. Thereafter, the inner elastic portion 27 sandwiching the upper elastic member 15U between the sheets is folded in a valley, overlapped on the upper second region 31B, and bonded. Thereby, the inner side elastic part 27 can adhere | attach the 2nd adhesion area | region 22B so that elasticity or a softness | flexibility may not be impaired. As an example, the second adhesive is applied using a spray or the like.

The first adhesive region 22A, the third adhesive region 22C, and the second adhesive region 22B use the same adhesive (which may be either the first adhesive or the second adhesive), and the amount and application of the adhesive. By different methods, the first adhesive region 22A and the third adhesive region 22C may have a higher adhesive force than the second adhesive region 22B. For example, the first adhesive region 22A and the third adhesive region 22C are configured to apply the adhesive firmly to the entire surface using a roller. On the other hand, the second adhesive region 22B may be applied using a spray or the like to reduce the amount of adhesive. Further, in the second adhesive region 22B, the amount of the adhesive to be applied may be reduced by applying the adhesive in a spiral shape or a stripe shape. Thereby, the 2nd adhesion field 22B can be pasted up so that elasticity or flexibility may not be spoiled.

As shown in FIG. 22D, the second bonding region 22B is a region where the elongated region 25X ′ along the waistline direction on the upper side of the adherend portion 16A is solid-coated with a roller or the like, and the regions on both sides of the adherend portion 16A. 25Y ′ may be applied by spraying or the like.

[Fourteenth embodiment]
FIG. 23 shows a manufacturing method according to the fourteenth embodiment, and the manufacturing method according to the fourteenth embodiment is a modification of the manufacturing method in the diaper 100 according to the twelfth and thirteenth embodiments. In the fourteenth embodiment, as shown in FIG. 23 (a), the first adhesive region 22A and the third adhesive region 22C are coated with a first adhesive such as a hot melt adhesive having a high adhesive strength. Layer 25X is formed. Next, as shown in FIG. 23B, a second adhesive such as a hot-melt adhesive having a lower adhesive strength than the first adhesive is applied to the upper first region 31A forming the inner elastic portion 27. The adhesive layer 25Y is formed. At this time, the second adhesive is not applied to the region corresponding to the bonded portion 16A when the upper first region 31A overlaps the upper second region 31B. That is, the second adhesive is applied to the upper first region 31A so as to have a concave shape. Then, the upper first region 31A sandwiching the upper elastic member 15U with the sheet is folded in a valley and overlapped with the upper second region 31B.

Also by the manufacturing method of the fourteenth embodiment, the same effect as that of the thirteenth embodiment can be obtained.
Also in the fourteenth embodiment, the first adhesive region 22A, the third adhesive region 22C, and the second adhesive region 22B use the same adhesive (which may be either the first adhesive or the second adhesive). The first adhesive region 22A and the third adhesive region 22C may have higher adhesive strength than the second adhesive region 22B by varying the amount of adhesive and the application method.

Further, as shown in FIG. 23 (c), in the second bonding region 22B, the elongated region 25X ′ along the waistline direction of the bonded portion 16A is solid-coated with a roller or the like, and the regions 25Y ′ on both sides of the bonded portion 16A are covered. May be applied by spraying or the like.

[Fifteenth embodiment]
In the diaper 10 of 1st Embodiment demonstrated above, the strip | belt-shaped area | region 34 is provided in the periphery of 10 A of trunk periphery opening parts (refer Fig.2 (a) and FIG.2 (c)). As shown in FIGS. 24A to 24D, in the diaper 110 of the fifteenth embodiment, the front end portion and the rear end portion of the bonded portion 16A are arranged so as to coincide with the opening end of the waistline opening 10A. To do. Thereby, the pocket 30 can be made deep and more excrement can be received. Such a diaper is applicable also to the

diaper

40, 50, 60, 70, 80, 90, 91, 100 mentioned above.

In addition, the said embodiment can also be suitably changed and implemented as follows.
-The shape of the pocket 30 should just be provided with the opening end opened toward 10 C of crotch parts, and the shape of parts other than an opening end is not specifically limited. For example, the pocket 30 may have an Ω-shaped overall shape so that the width of the opening end that opens toward the crotch portion 10C is narrowed. Thereby, it is possible to prevent the excrement once entering the pocket 30 from returning. Further, the width of the opening end of the pocket 30 may be wider than the side closer to the waistline opening 10A. Thereby, it is possible to easily enter the excrement into the pocket 30.

In the lower region 12D, the lower elastic member 15D may not be arranged in an extended state in all regions. For example, the lower elastic member 15D may be cut below the pocket 30.

The outer elastic portion 28 only needs to be bonded to the bonded portion 16A of the absorbent main body 16 to such an extent that the folds 16B are formed, and the corresponding entire region of the outer elastic portion 28 facing the bonded portion 16A is bonded. It may not be attached, but only partially bonded. For example, the adhesive may be applied in a straight line or a wavy line extending in the front-rear direction. Moreover, you may make it apply | coat an adhesive agent only to the both-sides edge part of the width direction of the to-be-adhered part 16A. Moreover, you may make it apply | coat an adhesive agent to a dot shape.

· The upper region 12U and the lower region 12D may not be connected by the outer sheet portion 26. That is, the upper region 12U and the lower region 12D may be separated. The outer sheet portion 26 only needs to be provided at a position facing at least the inner elastic portion 27, and the configuration of the other portions can be appropriately changed depending on the configuration of the diaper.

The region where the upper elastic member 15U located on the inner side with respect to the absorbent main body 16 and the region where the lower elastic member 15D located on the outer side are arranged may overlap in the thickness direction of the diaper. In addition, the lower end portion of the region where the upper elastic member 15U is disposed and the upper end portion of the region where the lower elastic member 15D is disposed may be located at the same position in the boundary portion.

Any one of the first exterior body 12F and the second exterior body 12R only needs to include the upper region 12U and the lower region 12D.
The pocket 30 is preferably provided in both the first exterior body 12F and the second exterior body 12R, but may be provided in at least one of them.

-The disposable diaper may be a tape-type diaper.
-It may be a disposable diaper for infants or adults such as the elderly or disabled persons who need nursing care. Moreover, it may be for pets.

-The sheet | seat which forms the outer sheet | seat part 26 which comprises the exterior body 12, the inner side elastic part 27, and the outer side elastic part 28 may be liquid-impermeable, and is liquid-permeable. Also good.

Claims

A disposable diaper having an inner surface arranged to face the wearer's skin and an outer surface arranged on the opposite side of the skin,
A first exterior part constituting the front body;
A second exterior part constituting the back body;
An absorbent main body having a front end portion and a rear end portion, wherein the front end portion overlapping the first exterior portion and the rear end portion overlapping the second exterior portion each include an adherend portion. Prepared,
At least one of the first exterior part and the second exterior part includes an upper region and a lower region located closer to the crotch than the upper region,
The upper region includes an upper elastic member that expands and contracts in the waistline direction,
The lower region includes a lower elastic member that expands and contracts in the waistline direction,
The upper region is an inner elastic part formed by sandwiching the upper elastic member with a sheet, and the inner elastic part located inside the absorbent main body,
An outer sheet portion located outside the absorbent main body, comprising at least the outer sheet portion located opposite to the outer surface of the inner elastic portion,
The lower region is an outer elastic portion formed by sandwiching the lower elastic member with a sheet, and includes the outer elastic portion positioned outside the absorbent main body,
The inner elastic portion has a non-bonded region that is not bonded to the bonded portion, and a bonded region that is bonded to the outer sheet portion around the bonded portion, and the bonded region is And is bonded to the outer sheet portion so that an opening end that opens toward the crotch portion is formed between the inner elastic portion and the adherend portion,
The said outer side elastic part is adhere | attached with respect to the said to-be-adhered part disposable diaper.
The disposable diaper according to claim 1, wherein in the lower region, the region of the outer elastic portion facing the bonded portion is bonded to the entire corresponding region of the bonded portion.
The disposable diaper according to claim 1 or 2, wherein the lower elastic member is arranged in an extended state in a region overlapping the absorbent main body in the lower region.
The outer sheet portion is a series of single sheets straddling the upper region and the lower region,
The disposable diaper according to any one of claims 1 to 3, wherein each of the first exterior part and the second exterior part is configured such that the upper region and the lower region are connected by the outer sheet portion. .
The inner elastic portion is bonded to the outer sheet portion so that the bonding region has a concave shape having the opening end that opens toward the crotch portion. The disposable diaper according to item 1.
A first exterior part constituting the front body;
A second exterior part constituting the back body;
An absorbent main body having a front end portion and a rear end portion, wherein the front end portion overlapping the first exterior portion and the rear end portion overlapping the second exterior portion each include an adherend portion. Prepared,
At least one of the first exterior part and the second exterior part includes an upper region and a lower region located closer to the crotch than the upper region,
In a method for manufacturing a disposable diaper having an inner surface arranged to face the wearer's skin and an outer surface arranged on the opposite side of the skin,
Providing an outer sheet portion located outside the absorbent main body at least in the upper region;
Forming an outer elastic portion having a lower elastic member that expands and contracts in a waistline direction and a sheet that sandwiches the lower elastic member outside the lower region and the absorbent main body;
Placing the adherend across the outer elastic portion and the outer sheet portion, and bonding the adherend to the outer elastic portion and the outer sheet portion;
At least the sheet, which is a constituent element of an inner elastic portion having an upper elastic member that expands and contracts in the waistline direction and a sheet that sandwiches the upper elastic member, is stacked on the outer sheet portion from above the adherend portion, The bonded portion is sandwiched between the outer sheet portion and the inner elastic portion sheet, and the inner elastic portion sheet is not bonded to the bonded portion, while the inner elastic portion sheet and the bonded portion are not bonded. Bonding the sheet of the inner elastic portion to the outer sheet portion around the bonded portion so that an opening end that opens toward the crotch portion is formed therebetween,
Forming the inner elastic portion inside the upper region and the absorbent main body;
A method for manufacturing disposable diapers.
Adhering the adherend to the outer elastic portion and the outer sheet portion means that the region of the outer elastic portion facing the adherend in the lower region is set to the corresponding region of the adherend. The manufacturing method of the disposable diaper of Claim 6 including adhere | attaching.
Including disposing the lower elastic member in an extended state in a region overlapping the absorbent main body in the lower region,
The manufacturing method of the disposable diaper of Claim 6 or 7.
The outer sheet portion is a series of single sheets straddling the upper region and the lower region,
The method for manufacturing a disposable diaper according to any one of claims 6 to 8, further comprising connecting the upper region and the lower region by the outer sheet portion.
Adhering the inner elastic part to the outer sheet part includes adhering the inner elastic part to the outer sheet part in a concave shape that opens toward the crotch part,
The manufacturing method of the disposable diaper in any one of Claims 6 thru | or 9.