JP3217317B2 - Pants-type disposable wearing article - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to disposable wearing articles, and more particularly, to pants-type disposable wearing articles such as disposable diapers and training pants.

[0002]

2. Description of the Related Art Conventionally, as this kind of article,
2. Description of the Related Art There has been known an arrangement in which an elastic member for elastically pressing a leg and a waist is pressed. However, in this type of article, the core acts directly on the water-absorbing core of the article, and is separated from the wearer's body in the vicinity of the lower part of the front and rear areas, that is, in the vicinity of each boundary between the front and rear areas and the crotch area. It does not include an elastic member arranged to prevent the occurrence of the vibration. Therefore, while wearing the article, the core in the vicinity of the lower part of the front and rear area rises from the body, and not only the appearance is poor, but also the excrement flows from the inseam area to the front and rear area unnecessarily and causes leakage from the front and rear area. It has become.

An object of the present invention is to dispose a third elastic member that directly acts on a core near each boundary between the front and rear area and the crotch area, in addition to the leg and waist elastic members. It is to solve the above problem.

[0004]

According to the present invention, there is provided a laminate having a water-absorbent core interposed between a top sheet and a back sheet, and having a front and rear area, a crotch area therebetween, and a vertical direction and a horizontal direction. A concave notch is formed on both side edges of the crotch section in the lateral direction, and the vertical notch of the concave notch is formed.
A first elastic member that is formed in a curved shape at both ends in a vertical direction and that extends and contracts in the horizontal direction at both ends of the laminate in the vertical direction, and a second elastic member that expands and contracts near a side edge of the recessed portion. In a pants-type disposable wearing article in which members are respectively arranged and both side edges of the front and rear section in the lateral direction are joined to form a waist opening and a pair of leg openings, the crotch section of the front and rear section A third elastic portion is provided at a portion crossing the front and rear section at a portion which is respectively biased to
Material, and each of the third elastic members is provided with the back sheet.
And a longitudinal direction of the third elastic member interposed between the core and the core.
Toward the crotch region so that the central portions are opposed to and separated from each other
And both ends of the third elastic member in the longitudinal direction.
Are substantially along the curved ends of the concave portions in the longitudinal direction.
Curving I by extending the stretch to the core throughout the said lateral to the other side edge of the front post region opposed thereto from one side edge of said front and rear regions to the topsheet side press pressure, each of said second elastic member, said longitudinal District
And extending between the third elastic members located in the region .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the article of the present invention will be described below with reference to the drawings.

FIG. 1 shows a perspective view of a pant or brief-type article. The article has a vertically long laminate 1 having a vertical direction and a horizontal direction, a leg opening 2, and a waist opening 3,
Attach elastic members 4, 5, 6 around each,
A heat seal 7 is applied to the opposite side edge of the laminate.

FIG. 2 is an exploded perspective view of the article. The laminate 1 includes a stretchable and water-permeable top sheet 9, a stretchable and water-permeable backsheet 10, a stretchable and water-impermeable insole sheet 11, and a mat or sheet-shaped water-absorbing core 12. The front and back sheets 9 and 10 and the insole sheet 11 are formed in the same shape and the same size, and are provided on both sides of the crotch section 15 located between the front and rear sections 13 and 14 for the leg opening 2. A recess 16 is formed. As shown in FIG. 3, the insole sheet 11 is joined to the back sheet 10 by a hot-melt adhesive 17 adhered in a dot shape or by dot fusion.

The insole sheet 11 includes an elastic member 4 for the leg opening 2, an elastic member 5 for the waist opening 3,
The elastic members 6 between the waist opening 3 and the leg openings 2 for pressing the core 12 toward the wearer's body are respectively arranged under extension through a hot melt type adhesive (not shown). It is. Each elastic member 4 has a tape-like form, and is attached vertically in a straight line along a side edge of each concave notch 16. Each elastic member 5 has a plurality of thread-like forms,
Each of the front and rear sections 13 and 14 is attached in a laterally straight manner along the edge of the section. Each elastic member 6 has a plurality of thread-like forms, and is the front and rear sections 13 and 14 between each of the elastic members 5 and each of the elastic members 4, and includes the back sheet 10 and the core 1.
2, a portion which is biased toward the crotch region 15, that is, at a lower portion of the front and rear regions 13 and 14, and further, the front and rear region 1
The crotch section is arranged so as to expand and contract in the horizontal direction over the entire width thereof from one side edge of the third and the other side edge to the other side edge, and the longitudinal center portions 6a are spaced apart from each other. 15, and both ends 6 b in the longitudinal direction extend to both lateral edges of the front and rear sections 13, 14 in a state substantially along the curvature of the longitudinal end of each recessed portion 16.

The core 12 is formed into an hourglass shape, and is not shown, but is not shown in the drawing, so as not to hinder the elasticity of the front and back sheets 9 and 10 and the insole sheet 11. They are joined in a dot shape via a hot melt type adhesive or welding.

Since the insole sheet 11 does not have air permeability, a large number of ventilation holes 18 are formed on the laterally opposed side portions in the front and rear areas thereof.
In other words, the narrow sheet having no cutout may be joined to the back sheet 10 to allow ventilation at the cutout.

Although not shown, the top sheet 9 and the insole sheet 11 are joined in a dot shape by a hot-melt type adhesive or welding.

The thus-formed laminate 1 is folded vertically in two at its center and heat-sealed on both side edges thereof, thereby forming a pants or brief type article shown in FIG. It is. When the laminated body 1 is folded in two at the center and heat-sealed on both side edges as described above, the front and rear sections 13, 1 are clearly seen from the drawing.
The lengthwise ends of the elastic members 6 at 4 are substantially continuous with each other in the waist direction via the seal portions. Therefore, the close contact with the body in the vicinity of the seal portion is improved, and leakage of excrement from the vicinity is prevented.

The elastic members 4, 5 and 6 are made of natural or synthetic rubber or plastic, the front and back sheets 9 and 10 are made of a stretchable and water-permeable nonwoven fabric, the insole sheet 11 is made of a stretchable and water-impermeable plastic film, and the core 12 Can be used as a mixture of fluff pulp and water-absorbing polymer particles.

FIG. 4 is an example for manufacturing the article, and shows a plan view in which the elastic members 4 and the continuous elastic members 5 and 6 which are cut in advance on the continuous insole sheet 11 are arranged. The elastic member 4 and the continuous elastic members 5 and 6 which are cut in advance in a state where the continuous insole sheet 11 is joined to the continuous back sheet 10 are arranged, and the continuous top sheet 9 and individual cores 12 are overlapped. After forming the continuous laminated body 1 by joining, the individual laminated bodies 1 are formed by cutting along the chain straight line 19 shown in FIG. Is cut out to form the concave notches 16 of the individual articles.

[0015]

According to the wearing article according to the present invention, in addition to the first and second elastic members of the openings, the portion between the waist opening and the leg opening and biased toward the crotch area is provided. ,
Since the third elastic member for pressing the core to the wearer's body side is provided, a portion of the front and rear sections adjacent to the crotch section can prevent the core from separating from the wearer's body side to the outside. it can. Therefore, during the wearing of the article, the core located near the lower part of the front and rear area, that is, near the lower abdomen of the wearer, does not rise from the wearer's body, has a good appearance, and the excrement caused by the rise Leakage can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is an exploded perspective view.

FIG. 3 is an enlarged cross-sectional view of a joined state of an insole and a back sheet.

FIG. 4 is a plan view showing a part of a process of manufacturing an article by disposing an elastic member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Laminated body 4,5,6 Elastic member 6a Central part 6b End part 9 Top sheet 10 Back sheet 12 Core 16 Concave notch

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hirofumi Onishi 2540-3 Omachi, Toyooka-cho, Iyo-Mishima-shi, Ehime Prefecture (58) Field surveyed (Int. Cl. ⁷ , DB name) A61F 13/15-13/84

Claims (1)

(57) [Claims] 1. A water-absorbing core is interposed between a top sheet and a back sheet, and a front and rear area and a crotch area between them are provided;
A laminate having a vertical direction and a horizontal direction is configured, and concave notches are formed on both side edges of the crotch section in the horizontal direction.
And both ends in the vertical direction of the concave notch are curved.
A first elastic member that expands and contracts in the lateral direction at both ends of the laminate in the longitudinal direction, and a second elastic member that expands and contracts along the vicinity of a side edge of the recessed portion, In a pants-type disposable wearing article in which both side edges of the front and rear sections in the lateral direction are joined to form a waist opening and a pair of leg openings, at a position where each of the front and rear sections is biased toward the crotch section. A third elastic member is provided at a portion crossing the front and rear section ,
Each of the third elastic members includes the back sheet and the core.
And the center of the third elastic member in the length direction is
Curved toward the crotch region so as to be opposed to and separated from each other
The lengthwise ends of the third elastic member are each
Curved along substantially both ends in the longitudinal direction of the notch
By extending while, stretch to the pressing of the core to the topsheet side throughout the said lateral to the other side edge of the front post region opposed thereto from one side edge of said front and rear regions
Each of the second elastic members is located in the front and rear section.
Extending between the third elastic members.
The article that.