JPH11318978A - Shorts type disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shorts type disposable diaper which is excellent in fitting property and wearing feel. SOLUTION: This diaper is a shorts type disposable diaper 1 constituted of an absorptive main body 8 absorbing excretions and an outer packaging member 9 holding the absorptive main body 8 and forming shorts. At both the tip edges of the longitudinal direction of the diaper 1, an around waist extending and contracting elastic member 14 is formed by an extending and contracting elastic ribbon 4 fitted by covering the end edge so as to be inserted. Further, at the inside of the diaper 1, an around waist extending and contracting elastic member 13 constituted of a plurality of extending and contracting elastic bodies arranged between a sheet 10 forming the extending and contracting elastic ribbon 4 and the diaper 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pants-type disposable diaper which is formed in a pants-type in advance, and more particularly to a pants-type disposable diapers having excellent fit around a waist.

[0002]

2. Description of the Related Art As a conventional disposable diaper, for example,
In a flat type diaper side flap as disclosed in Japanese Patent Application Laid-Open No. 57-77304, the portions corresponding to the left and right abdominal parts are fixed in advance when worn, and the waist opening and the leg opening are fixed. A so-called pants-type diaper provided has been proposed. Such pants-type diapers can be attached and detached by a wearer, and their demand is increasing even when the diapers are separated from infants or for adults such as incontinent persons. In such pants-type disposable diapers, stretch elasticity is added to the opening around both legs, the opening around the waist, and the both sides around the waist to enhance the diaper's followability and fit to the wearer. For example, Japanese Unexamined Utility Model Publication No. Hei 3-16920, Japanese Unexamined Patent Application Publication No. 4-28363, Japanese Unexamined Patent Application Publication No. 2-43664, Japanese Unexamined Patent Application Publication No. 4-166150, and Japanese Unexamined Patent Application Publication No.
A pants-type disposable diaper as disclosed in Japanese Patent Publication No. 201 has been proposed.

[0003]

SUMMARY OF THE INVENTION Among the pants-type disposable diapers that have already been proposed above, Japanese Utility Model Laid-Open No. 3-16.
In a pants-type disposable diaper as disclosed in Japanese Patent Application Publication No. 920 and Japanese Patent Application Laid-Open No. 4-28363, a telescopic elastic member is provided at the opening around the waist and the opening around both legs. It has a function of narrowing these openings to fit the absorber to the wearer and preventing leakage from the openings. However, since the waist circumference does not have stretch elasticity, the fit is incomplete.If urine is absorbed during wearing, the weight of the diaper increases and slips off, causing a problem of leakage from the opening. there were.

Further, in a pants-type disposable diaper as disclosed in Japanese Patent Application Laid-Open No. 2-4364, the fit during wear is relatively low because elastic side panels are provided on both sides of the diaper. Although it is good and it is difficult for the diaper to slip down, on the other hand, there is a problem that the elastic side panel has to be greatly extended at the time of attachment / detachment, and it is difficult to attach / detach.

The present invention solves the above-mentioned problem of the conventional pants-type disposable diaper, and makes it easy to attach and detach the diaper while minimizing the feeling of pressure on the abdomen of the wearer. It is an object of the present invention to provide a pants-type disposable diaper having good fit and preventing leakage from the inseam.

[0006]

SUMMARY OF THE INVENTION The present invention is directed to a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body comprising an absorber disposed between these sheets, and a waist area. An outer body forming an underwear having an opening and a pair of leg openings; an absorbent body disposed inside the outer member; and a waist around the waist opening and the leg opening. In a pants-type disposable diaper in which an elastic member and an elastic member around the leg are arranged, the elastic member around the waist is formed by an elastic ribbon attached so as to sandwich both longitudinal edges of the diaper. Further, inside the diaper, a sheet forming the elastic elastic ribbon extends to a waist circumference area of the diaper, and the sheet and the diaper Between the waist and the waist elastic member, a waist elastic member composed of a plurality of elastic members is arranged continuously along the waist in an extended state, substantially parallel to the waist elastic member. About pants-type disposable diapers.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The pants-type disposable diaper according to the present invention is formed of a stretchable elastic ribbon having a waist-stretchable elastic member attached so as to sandwich both longitudinal edges of the diaper. Inside the diaper, a sheet forming the elastic elastic ribbon extends to a waist circumference area of the diaper, and between the sheet and the diaper, a plurality of elastic elastic members substantially parallel to the waist elastic elastic member. The waist elastic members made of the elastic members are continuously arranged along the waist in the stretched state.

The underpants-type disposable diaper of the present invention having the above-described structure can be prevented from being displaced by various movements of the body or the weight of the diaper itself when worn, and can keep up with the body. It is possible to do. Further, since the elastic member composed of a plurality of elastic members is arranged in a region corresponding to the waist circumference of the wearer inside the diaper, the cushioning action formed by gathering allows the elastic member to be worn by the wearer. Are dispersed, and the feeling of wearing becomes excellent.

Further, since the elastic member is disposed inside the diaper, the elastic member is not visible at the center of the front and rear body where the absorbent body is disposed when the diaper is viewed from the outside. The appearance looks good.

[0010] Further, since the elastic elastic ribbon is attached so as to sandwich both longitudinal edges of the diaper, especially at the waist circumference, the texture and unevenness due to the shape of both side edges of the absorbent main body when worn. And the like do not directly irritate the skin and do not cause discomfort to the wearer.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a pants-type disposable diaper according to the present invention; however, the present invention is not limited thereto. FIG. 1 is a perspective view showing a pants-type disposable diaper according to the present invention. In FIG. 1, a pants-type disposable diaper 1 is formed by joining a side seam portion 7 of a side edge of a front body 5 and a back body 6 to form an opening 2 around a waist and an opening 3 around a leg. Is provided with an elastic member, and furthermore, an elastic member is also arranged around the waist. In this case, the stretchable elastic member disposed around the waist is invisible from the outside of the diaper in the central region of the front and rear body where the absorbent body is disposed, and improves the appearance of the diaper. be able to.

FIG. 2 is an exploded view showing an extended state of the pants-type disposable diaper 1 shown in FIG. In FIG. 2, the disposable diaper 1 includes an exterior member 9 and an absorbent main body 8 arranged in a central region along the longitudinal direction inside the exterior member 9 (the side in contact with the wearer). A leg elastic member 12 is disposed at the position of the leg opening 3, and an elastic ribbon 4 is attached at the position of the waist opening 2 to form a waist elastic member 14. ing. Further, a sheet 10 forming the elastic elastic ribbon 4 extends at a position around the waist inside the diaper 1, and a waist elastic elastic member 1 is provided between the sheet 10 and the diaper.
A waist elastic member 13 composed of a plurality of elastic members is disposed substantially in parallel with the elastic member 4.

FIG. 3 is a sectional view showing a state in which the pants-type disposable diaper 1 shown in FIG. 2 is cut along the line X. In FIG. 3, the disposable diaper 1 includes an exterior member 9.
And an absorbent body 8 disposed on the exterior member 9. The exterior member 9 is formed by laminating two nonwoven fabrics, and the absorbent body 8 is composed of a liquid-permeable top sheet 15 and a liquid. It is formed of an impermeable back sheet 16 and an absorber 17 disposed between these two sheets. On the edge of the diaper 1 to be used, a band-shaped sheet is folded back, and a stretchable elastic ribbon 4 is provided in which a stretchable elastic member 14 is disposed at a folded portion.
However, it is attached so as to sandwich the edge of the diaper 1 to be used, and the elastic member 14 around the waist is formed. Further, between the top sheet 15 of the absorbent main body 8 and the sheet 10 forming the elastic ribbon 4, a waist elastic member 13 composed of a plurality of elastic members is disposed.

As the liquid-permeable surface sheet used for the pants-type disposable diaper of the present invention, a liquid-permeable nonwoven fabric made of synthetic fibers made of polyethylene, polypropylene, polyester or other thermoplastic resin is used.
Further, as the liquid-impermeable back sheet, a liquid-impermeable polyethylene sheet, preferably a polyethylene sheet provided with micropores is used. For example, a moisture-permeable sheet such as a sheet obtained by adding a filler to a thermoplastic resin and stretching it is used. The use of a liquid-impermeable sheet having no danger eliminates the risk of stuffiness and is more comfortable.

The exterior member is made of a material selected from the group consisting of polyester fibers such as polyethylene terephthalate fibers, polyolefin fibers, polyamide fibers such as nylon fibers, cellulose fibers such as cotton fibers, pulp fibers, and mixtures thereof. A nonwoven fabric made of, for example, a nonwoven fabric used on the outside of a diaper is preferably a nonwoven fabric having hydrophobicity in order to prevent leakage.

The elastic elastic members disposed at the waist opening and the leg opening are the same as those used for ordinary disposable diapers, such as urethane thread, thread rubber, urethane film, urethane foam, and the like. It is possible,
These elastic members are disposed in the leg opening and the waist opening in an extended state, respectively, and are adhered and fixed by a hot melt adhesive.

Further, it is preferable to use a thread-like elastic member such as urethane thread or thread rubber for the elastic member disposed around the waist, and the object of the present invention is to use the elastic member in a minimum necessary area. In order to increase the followability of the diaper to the wearer and to prevent the diaper from slipping off, 5 to 10 thread-like elastic elastic bodies are arranged at intervals of 5 mm to 10 mm. The number and spacing of the elastic members can be freely selected from the above ranges depending on the elongation stress of the elastic members to be used and the degree of elongation at the time of bonding and fixing.

If the number of the elastic members is more than 10 or the interval is less than 5 mm, the force of the elastic members is concentrated in a narrow range, so that a rubber mark is formed. May cause rash. Further, when the number of the elastic members is less than 5, or when the interval is wider than 10 mm, the force of the elastic members is dispersed, and it is impossible to prevent the diaper from slipping down.

As the absorbent, an absorbent used for ordinary disposable diapers can be used as it is. It is preferable to use fluff pulp as a main material and a highly absorbent polymer in combination, and to use other absorbent paper. A single material, or a mixture or a laminate of heat-fused fibers is used. Further, it is preferable to adopt a laminated structure in which the whole is wrapped in a tissue. The shape of the absorber may be an hourglass type or a rectangular type, but a better fit is obtained with the hourglass type.

The belt-like sheet forming the stretch elastic ribbon is
A nonwoven fabric made of synthetic fibers made from polyethylene, polypropylene, polyester, or other thermoplastic resin is used.However, the nonwoven fabric must be relatively bulky and flexible to enhance the fit around the waist when wearing. Is desirable. The width of the stretchable elastic region around the waist of the stretchable elastic ribbon is 5 to 50 mm, preferably 20 to 3 mm.
It is preferably about 0 mm, and when the width is less than 5 mm, the area in contact with the skin of the stretchable elastic region is too small, and the tightening pressure due to the contraction of the stretchable elastic member increases, which is not preferable because marks are easily formed on the skin. On the other hand, when the width exceeds 50 mm, the width becomes too wide and the appearance is deteriorated. In addition, it may be folded inward during wearing and leakage may occur from the portion.

[0021]

According to the pants-type disposable diaper of the present invention, the overlapped portion of the constituent material around the waist is covered with the elastic elastic ribbon. In addition, the irritation to the skin due to unevenness is reduced, and furthermore, inside the diaper, a stretchable elastic member is continuously arranged along the waist in a stretched state between the sheet forming the stretchable elastic ribbon and the diaper. for,
When worn, it is possible to suppress the occurrence of displacement due to various movements of the body and the weight of the diaper itself, and it is possible to maintain the ability to follow the body. In addition, the tightening pressure on the wearer of the stretchable elastic member is dispersed by the cushioning action formed by the gathering, and it is possible to provide a pants-type disposable diaper having an excellent wearing feeling.

[Brief description of the drawings]

FIG. 1 is a perspective view of a pants-type disposable diaper according to the present invention.

FIG. 2 is a development view showing an extended state in which a side seam portion of the pants-type disposable diaper shown in FIG. 1 is opened and deployed.

FIG. 3 is a sectional view showing a state in which the pants-type disposable diaper shown in FIG. 2 is cut along a line X.

[Explanation of symbols]

 1: Pants-type disposable diaper 2: Waist opening 3: Leg opening 4: Elastic elastic ribbon 5: Front body 6: Back body 7: Side seam part 8: Absorbent body 9: Exterior member 10: Elastic Sheet forming elastic ribbon 11: Side flap 12: Leg elastic member around the waist 13: Elastic member around the waist 14: Elastic member around the waist 15: Top sheet 16: Back sheet 17: Absorber

Claims (1)

[Claims] 1. A liquid-permeable top sheet, a liquid-impermeable back sheet, an absorbent body composed of an absorber disposed between the two sheets, an opening around the waist and a pair of openings around the legs. A waist-stretchable elastic member and a leg-around stretchable elastic member along the waist-opening and the leg-opening, respectively. In the pants-type disposable diaper in which the members are disposed, the elastic member around the waist is formed by an elastic elastic ribbon attached so as to sandwich both longitudinal edges of the diaper, and further, the diaper Inside, a sheet forming the elastic elastic ribbon extends to the waist area of the diaper, and the waist is between the sheet and the diaper. A waist-stretchable elastic member comprising a plurality of stretchable elastic members substantially in parallel with the stretchable elastic member, and arranged continuously along the waist circumference in an extended state; Diapers.