JPH1033591A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the fastening power of a fastening tape so as not to be easily detached by the erroneous operation or mischief of a wearing person concerning a disposable diaper having a mechanical fastener as the fastening tape. SOLUTION: This disposable diaper has a liquid permeable top sheet 2, a liquid non-permeable back sheet 3, and a liquid holding absorber 4 interposed between both the sheets. Then, fastening tapes 10 for diaper fixture having projecting members 11 of mechanical fasteners are arranged at both left and right side edge parts B1 and B2 of a back side part B, the fastening tapes 10 are composed of wide main bodies 12 of tapes, of which base end parts are fixed to both the left and right side edge parts B1 and B2 of the back side part B, and the projecting members 11 fixed to the main bodies 12 of tapes, and the projecting members 11 are arranged at both the respective left and right side edge parts of main bodies 12 of tapes and form a pair of left and right fixing parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deployable disposable diaper having a fastening tape for fastening a diaper having a mechanical fastener, and more particularly, to a fastener which does not come off due to erroneous operation of a wearer. The present invention relates to a disposable diaper excellent in fastening strength of a fastening tape.

[0002]

2. Description of the Related Art Conventionally, there has been provided a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorber interposed between the two sheets. Fastening tape for fastening a diaper is disposed on both left and right side edges of the back side, and the unfoldable disposable diaper in which the fastening tape is formed using a convex member of a mechanical fastener is widely used. Have been. The fastening tape formed by using the convex member of the conventional mechanical fastener has been formed by fixing the convex member to the entire surface of one surface.

[0003] However, such a conventional fastening tape can be detached even by a weak force of a wearer such as an infant, so that the fastening tape is detached by a wrong operation or mischief of a wearer, and the diaper is loosened or detached. There was a problem that excrement leaked. In addition, due to such a problem, it is necessary for a person who accompanies a wearer such as a mother to frequently check whether or not the fastening tape has come off at the time of wearing.

Accordingly, an object of the present invention is to provide a disposable diaper having a mechanical fastener as a fastening tape, wherein the fastening tape has an excellent fastening force and does not easily come off due to erroneous operation or mischief by a wearer. Is to do.

[0005]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, a convex member is arranged on each of the left and right side edges of a wide tape body, and a pair of right and left fastening members is provided. It has been found that a disposable diaper having a fastening tape provided with a portion can achieve the above object.

The present invention has been made based on the above findings, and comprises a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retentive absorber interposed between the two sheets. In a deployable disposable diaper in which diaper fastening fastening tapes having convex members of mechanical fasteners are disposed on left and right side edges of the back side, the fastening tape has a base end on the back. The tape body comprises a wide tape main body fixed to the left and right side edges of the side portion, and the convex member fixed to the tape main body, and the convex members are respectively disposed on the left and right side edges of the tape main body. Further, the present invention provides a disposable diaper characterized by forming a pair of right and left fastening portions.

Further, the present invention provides the disposable diaper, wherein the tape body has a width of 2 to 7 cm. In addition, the present invention provides the disposable diaper, wherein the distance between the pair of the fastening portions is 1 to 6 cm. Further, the present invention provides the disposable diaper, wherein the tape body is formed of a flexible material. Further, the present invention provides the disposable diaper, wherein the tape body is formed of a stretchable elastic member.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a disposable diaper according to the present invention will be described in more detail with reference to the drawings. here,
FIG. 1 is a perspective view showing one mode of the disposable diaper of the present invention, and FIG. 2 is an enlarged plan view of a fastening tape in the disposable diaper of the mode shown in FIG. FIG.
FIG. 2 is an enlarged perspective view showing a mode of peeling off the fastening tape of the embodiment shown in FIG. 1.

A disposable diaper 1 shown in FIG. 1 includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-retentive absorber 4 interposed between the two sheets. This is a deployable disposable diaper in which a fastening tape 10 for fastening a diaper having a convex member 11 of a mechanical fastener is disposed on both left and right side edges B1 and B2 of a back side portion B.

More specifically, in the disposable diaper 1 of the present embodiment, as shown in FIG. 1, the absorbent body 4 is formed in an hourglass shape with a narrowed crotch region, and the top sheet 2 and the back sheet 3 are also absorbed. The crotch region is curved in accordance with the shape of the body 4 as described above, and the absorber 4 is sandwiched and fixed between the top sheet 2 and the back sheet 3.
Further, an elastic elastic member 7 for fitting the waist 5 and the leg 6 to a wearer when the diaper is worn is provided on the waist 5 and the leg 6 at the periphery of the absorber 4. It is provided fixed by the seat 2 and the back sheet 3. Such a configuration is the same as a conventional deployable disposable diaper.

The fastening tapes 10 are respectively adhered to the back sheet 3 side. When not in use, the convex member 11 of the mechanical fastener is fastened to the top sheet 2 in a releasable manner. I have. In addition, a landing tape 8 for fastening the fastening tape 10 in a detachable manner is provided on the back sheet 3 on the ventral side of the diaper.

Next, a description will be given of a material for forming each member constituting the disposable diaper 1. Top sheet 2 above
As the liquid-permeable sheet that allows excrement to permeate the absorber, a material having a feeling similar to underwear is preferable, and such a liquid-permeable sheet is preferably, for example, a woven fabric, a nonwoven fabric, or a porous film. No. In addition, a method of applying a hydrophobic compound such as a silicon-based oil agent or paraffin wax to the periphery of the top sheet 2 or a method of applying a hydrophilic compound such as an alkyl phosphate ester on the entire surface in advance and washing the periphery with warm water is used. By applying a water repellent treatment, it is possible to prevent leakage due to bleeding of urine and the like on the periphery.

As the back sheet 3, a liquid impermeable and vapor permeable film sheet or a fiber aggregate obtained by adding a filler to a thermoplastic resin and stretching is used.

The absorbent 4 is preferably a combination of a high-molecular-weight water-absorbing polymer mainly composed of defibrated pulp. The high-molecular water-absorbing polymer is an upper layer of the absorber 4,
It may be present in either the middle layer or the lower layer, or may be a mixture with pulp. Further, the high molecular water-absorbing polymer has a holding performance of absorbing and holding a liquid 20 times or more its own weight, and is preferably in the form of particles having a gelling property. ,
For example, starch-acrylic acid (salt) graft copolymer, saponified starch-acrylonitrile copolymer,
A crosslinked product of sodium carboxymethylcellulose, an acrylic acid (salt) polymer and the like are preferred.

The elastic elastic member 7 is preferably a thread rubber, a flat rubber, a film-type elastic material or a film-like foamed polyurethane, and a member having a stress at 50% elongation of 40 to 150 g. preferable.

As the convex member 11 of the mechanical fastener constituting the fastening tape 10, "Magic Tape" (registered trademark, manufactured by Velcro), "Quicklon"
(Registered trademark, manufactured by YKK), "Majicross" (registered trademark, manufactured by Kanebo Bell Touch), etc. A sheet provided with a large number of convex engaging members 11a (see FIG. 2) such as key-shaped or mushroom-shaped. A known (commercially available) mechanical hook tape convex member can be used without any particular limitation. The landing tape 8 is made of a concave material of a mechanical fastener. As the concave material, in addition to a fiber sheet such as a nonwoven fabric, a tricot knitted fabric, for example, a 50-denier front yarn, a 20-denier 18-filament back yarn, A 26-gauge / inch knitted fabric or the like knitted with three needles at the front using a constituent yarn of one filament is used.

Thus, in the disposable diaper 1 of the present embodiment, as shown in FIGS. 1 and 2, the fastening tape 10 has the base end 12a at the left and right side edges B1, B2 of the back side B. A wide tape body 12 being fixed,
The convex member 11 is fixed to the tape body 12. The convex member 11 is disposed on each of the left and right side edges 12 c and 12 d of the tape body 12 to form a pair of right and left fastening portions 20. doing.

More specifically, the protruding member 11 has a narrow band shape, and on the one surface 12e side (the top sheet 2 side) of the tape body 12, right and left side edges 12c, 12c are formed.
d, one by one. Further, the convex member 11 is fixed to the tape main body 12 with the distal end portion 12b being left over, thereby forming a knob 13 at the distal end portion 12b of the tape main body 12.

The width W of the tape body 12 is preferably 2 to 7 cm, and more preferably 3 to 5 cm. If the width W of the tape main body 12 is less than 2 cm, the vicinity of the base of the fastening tape 10 is twisted at the time of mounting, and the mounting stability of the diaper is deteriorated.
Exceeding the range is not preferable because the operability of the fastening tape 10 deteriorates.

The distance d between the left and right fastening portions 20 is 1
It is preferably from 6 to 6 cm, and more preferably from 2 to 5 cm. If the distance d is less than 1, it is difficult to apply a shearing force to the fastening portion when the fastening tape 10 is removed, and if it exceeds 6, the operability of the fastening tape 10 deteriorates, which is not preferable.

The width W 'and the length L of the fastening portions 20 are such that the total T peeling force of each fastening portion 20 against the landing tape 8 is 30 g to 1000 g (preferably 150 g to 3 g).
00g). If the T-peeling force is less than 30 g, the fastening portion 20 may come off the landing tape 8 due to insufficient engaging force.
If it exceeds 00 g, the operability of the tape deteriorates because the engaging force is too strong, which is not preferable.

The tape body 12 is preferably made of a flexible material or a stretchable elastic member.
Examples of the flexible material that can be used in this case include various nonwoven fabrics, woven fabrics, and knitted fabrics, and examples of the elastic material include polyurethane, modified polyester, natural rubber, and synthetic rubber. Film or nonwoven fabric. In this embodiment, the spun lace nonwoven fabric is used.

The disposable diaper 1 of the present embodiment can be used in the same manner as a normal deployable disposable diaper. When the fastening tape 10 is to be removed with the vicinity of the center 10a at the end of the tape in the same manner as in the normal handling of the fastening tape, as shown in FIG. (The direction of the arrow in FIG. 3)
, A high shearing force is applied to the entire fastening portion 20, and it is difficult to remove the fastening portion 20 by erroneous operation or mischievous force of a baby. In addition, when peeling off smoothly, the entirety of the above-mentioned knob 13 is used for both fastening portions 20.
The fastening tape 10 can be smoothly peeled off by applying a force in the longitudinal direction of the fastening tape 10 almost uniformly.

Further, the disposable diaper 1 of this embodiment uses a fastening tape 10 formed by attaching the convex member 11 to the tape body 12 at a location shown in FIG. Can be manufactured.

It should be noted that the disposable diaper of the present invention is not limited to the above-described embodiment, and various changes can be made without departing from the spirit of the present invention. For example, in the above embodiment,
Although the above description has been made by exemplifying a case where the fastening members 20 are formed by arranging the convex members 11 one by one at the left and right side edges, a plurality of the fastening members 20 may be formed respectively. . Therefore, the shape of the fastening portion 20 can be not only a rectangular shape as in the above-described embodiment but also a circular shape or the like.

[0026]

The disposable diaper according to the present invention is a disposable diaper having a mechanical fastener as a fastening tape, wherein the fastening tape has an excellent fastening force and does not easily come off due to erroneous operation or mischief by a wearer. . More specifically, in the disposable diaper of the present invention, the fastening tape does not easily come off due to the force of an infant or the like, so that the diaper does not come loose or come off and does not leak. Since there is no need to check the information, the security of attendants such as mothers is also high.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one mode of a disposable diaper according to the present invention.

FIG. 2 is an enlarged plan view of a fastening tape in the disposable diaper of the embodiment shown in FIG.

FIG. 3 is an enlarged perspective view showing a mode of peeling off the fastening tape of the embodiment shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Top sheet 3 Back sheet 4 Absorber 5 Waist part 6 Leg part 7 Elastic elastic member 8 Landing tape 10 Fastening tape 11 Convex member 11a Engaging member 12 Tape body 12a Base end part 12b Tip part 12c Side edge part 12d Side edge 13 Knob 20 Fastening A Abdominal B Back

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeto Yanagihara 2606 Akabane, Kakaicho, Haga-gun, Tochigi Pref.

Claims (5)

[Claims] 1. A liquid-permeable topsheet, a liquid-impermeable backsheet, and a liquid-retentive absorber interposed between the two sheets, and the left and right side edges of the back side. In a deployable disposable diaper in which a fastening tape for fastening a diaper having a convex member of a mechanical fastener is disposed, a base end of the fastening tape is fixed to left and right side edges of the back side. The tape body comprises a wide tape body, and the convex member fixed to the tape body. The convex members are disposed on left and right side edges of the tape body, respectively, and form a pair of right and left fastening portions. A disposable diaper characterized by that. 2. The tape body has a width of 2 to 7 cm.
The disposable diaper according to claim 1, wherein: 3. The distance between the pair of fastening portions is 1 to 6 cm.
The disposable diaper according to claim 1, wherein: 4. The disposable diaper according to claim 1, wherein the tape body is formed of a flexible material. 5. The disposable diaper according to claim 1, wherein the tape body is formed of a stretchable elastic member.