JPS6140722Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a disposable diaper and, more particularly, to an attachment structure for a tape fastener for fastening both ends of the diaper around the waist.

Conventionally available disposable diapers that do not require a diaper cover are equipped with fasteners made of pressure-sensitive tape at both ends of the back waist circumference in order to secure the diaper to the wearer. This tape fastener has one end of its constituting tightening tape fixed to a thin, flexible plastic film that is the back sheet of the diaper. When the waist area of the diaper is tightened by hand-picking and pulling, the tensile force is transmitted only to the film to which one end of the tightening tape is fixed, resulting in damage to the film at the fixed end. There is. Tokkosho is a means to eliminate such shortcomings.
It is disclosed in Japanese Patent No. 52-34978. In this known method, one end of the release tape fixed to the nonwoven fabric that is the top sheet of the diaper projects outward from the side edge of the diaper, and this projecting part is connected to the free end of the fastening tape. Although the tensile force is transmitted to both the backsheet and the topsheet, the film may still be damaged, which is unsatisfactory.

An object of the present invention is to provide a tape fastener mounting structure that can eliminate the above-mentioned drawbacks.

The present invention will be described below based on the illustrated embodiments.

Fig. 1 is a partially cutaway plan view of the diaper of the present invention;
FIG. 2 shows a sectional view of the tape fastener attachment portion.

The diaper 1 includes a back sheet 2 made of plastic film, a top sheet 3 made of nonwoven fabric,
A core 4, which is an absorbent body mainly composed of crushed bulbs, is interposed between both sheets 2 and 3, and the core 4 is expanded and contracted in the length direction into a side flap 5 where both sheets 2 and 3 meet each other. It consists of an elastic elastic member 6 that creates a Tape fasteners 9 are attached to the back sheet 2 at both ends of the back waist circumference 7 of the diaper 1, and when the diaper 1 is worn, the free ends of the tightening tapes constituting the tape fasteners 9 are attached. are adhered to the back sheet 2 at both ends of the front waist circumference 8 of the diaper 1. Such diapers 1 and tape fasteners 9 are known.

The present invention is characterized by the following configuration among such known devices. That is, the dorsal waist circumference 7
The width direction end 10a of the reinforcing piece 10 is interposed between the back sheet 2 and the top sheet 3, and the reinforcing piece 10 is joined together with a hot melt adhesive or the like. The other end 10c of the reinforcing piece 10 in the width direction is interposed between the top sheet 3 and the upper surface of the core 4. A tape fastener 9 is attached to the back sheet 2 at the end of the waist circumference 7 on a line along the length of the reinforcing piece 10. This tape fastener 9 consists of a tightening tape 11 having an adhesive surface 11a and a release tape 12 having an adhesive surface 12a. Fixed by adhesive surface 11a,
The release tape 12 is fixed with its longitudinal end 12b projecting outward from the side edges of the back sheet 2 and top sheet 3 by an appropriate length, and is fixed to the tightening tape 11 via the projecting end 10b of the reinforcing piece 10. and the protruding end 12b of the release tape 12 on the adhesive surface 11a, 1
2a, and the tightening tape 11
has its free end 11c bent toward the release tape 12 side, and is temporarily attached to its non-adhesive surface with an adhesive surface 11a. When using the tape fastener having such a structure, the free end 11c of the tightening tape 11 is peeled off from the release tape 12, as shown in FIG.

FIG. 4 shows a different embodiment from the above-described embodiment shown in FIGS. 2 and 3. In this embodiment, the protruding end 10b of the reinforcing tape 10 and the tightening tape 11 are integrally connected by the adhesive surface 11a, and the free end 11c of the tightening tape 11 is kept extending. Release tape 1 on surface 11a
2' is temporarily attached, and the other structure is the same as the above-described embodiment shown in FIGS. 2 and 3. When using the tape fastener having such a structure, the release tape 12' is peeled off from the tightening tape 11.

Note that the reinforcing piece 10 may be made of any material such as plastic film, paper, or nonwoven fabric that has the required tensile strength.
Also, as in the illustrated example, the strips are not necessarily continuous into one strip, but are arranged so that appropriate intervals are created in the center of the strip.
That is, the tape fastener 9 may be separated into two strips of appropriate length and placed at each end of the dorsal waist circumference 7 to which the tape fastener 9 is to be attached, as described above. However,
The reinforcing piece 10 has waterproof properties, and when it is continuous in the form of a single band as shown in the illustrated example, the body fluid absorbed in the core 4 oozes out from the top sheet 3 of the dorsal waist circumference 7. This can be prevented.

According to the present invention having the above configuration, the diaper 1
When the free end 11c of the tightening tape 11 is held and pulled in order to make the wearer wear the tightening tape 1, the tightening tape 1
1 is transmitted to the back sheet 2, top sheet 3, and reinforcing piece 10, but these sheets 2, 3 and the reinforcing piece 10 at the fixed end 11b are integrally joined to each other. Since the sheets 2 are mutually reinforced, the sheet 2 at the fixed end portion 11b will not be easily damaged. Therefore,
If necessary, the free end 11c of the tightening tape 11 can be pulled more strongly to tighten the waist circumferences 7, 8 to the wearer's waist circumference more closely than in the case of conventional disposable diapers.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a partially cutaway plan view of the diaper, FIG. 2 is a cross-sectional view of the tape fastener attachment part, and FIG. 3 is a configuration of the tape fastener in FIG. 2. FIG. 4 is a cross-sectional view of the tape fastener attachment portion showing another embodiment. 1...Diaper, 2...Back seat, 3...Top sheet, 4...Core, 7...Dorsal waist circumference, 9
... Tape fastener, 10 ... Reinforcement piece, 10a
...Width direction end, 10b...Protruding end, 11...
Tightening tape, 11a...Adhesive surface, 11b...Fixed end, 11c...Free end, 12...Release tape, 12a...Adhesive surface, 12b...Protruding end.

Claims (1)

[Claims for Utility Model Registration] (1) A disposable diaper comprising a back sheet 2, a top sheet 3, a core 4 interposed between both sheets 2 and 3, and a tape fastener 9, The width direction end portion 10a of the strip-shaped reinforcing piece 10 is interposed between the back sheet 2 and the top sheet 3 at step 7, and they are joined together. The fixed end 1 of the tightening tape 11 is made to protrude outward by an appropriate length and is attached to the back sheet 2 at the end of the back waist circumference 7 on a line along the length direction of the reinforcing piece 10.
1b, and at least the free end 11c of the tightening tape 11 and the protruding end 10 of the reinforcing piece 10.
The diaper is characterized by being integrally connected with b. (2) Fix the release tape 12 to the top sheet 3 by making the longitudinal end portion 12b of the release tape 12 protrude outward from the width direction side edges of the back sheet 2 and top sheet 3 by an appropriate length, and fix the release tape 12 to the top sheet 3. The protruding end 10b of the reinforcing tape 10 and the free end 11c of the tightening tape 11 are connected together, the free end 11c is bent, and its adhesive surface 11a is temporarily attached to the release tape 12. A disposable diaper according to claim 1 of the utility model registration claim consisting of: (3) Free end 11c of tightening tape 11 and reinforcing piece 1
0 and the protruding end 10b of the free end 11c, and a release tape 12' is applied to the adhesive surface 11a of the free end 11c.
1. A disposable diaper according to claim 1, which is made by temporarily wearing a diaper.