JPH0114644Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape structure for joining the front and back corners of a disposable diaper when the diaper is worn.

Conventionally, disposable diapers that generally do not require a diaper cover have been put into practical use. The basic structure of this type of diaper consists of a water-permeable top sheet that comes into contact with the skin during use, a water-impermeable back sheet that does not come into contact with the skin, and an absorbent body interposed between the two sheets. Generally, these materials are
Non-woven fabrics are often used for the water-permeable top sheet, synthetic resin films are often used for the water-impermeable back sheet, and pulverized pulp is often used for the absorbent material.

Both ends of the waist circumference of the back side of such a diaper are provided with a tape structure for joining them together.
The binding tape structure includes a pressure-sensitive binding tape, which is generally secured at one end to a backing sheet at both ends of the waist circumference on the back side of the diaper, and on the opposite side. The free end of the bonding tape is temporarily attached to the release tape fixed to the top sheet, and when used, the free end of the bonding tape is peeled off from the release tape, and both ends of the front waist circumference are attached. By adhering to the back sheet of
Both ends of the waist circumference of the front and back sides of the diaper are joined together.

On the other hand, one end of the release tape can be left in line with one side edge (outer edge) of the front and back sheets, or it can be left to extend from the one side edge to the inner adhesive surface of the binding tape. is joined to.

However, since release tape is generally formed by cutting a relatively rigid material, if the cut end comes into contact with an infant when putting a diaper on the baby, it may hurt the baby's skin. There is a risk of injury.

The main objective of the present invention is to provide a bonding tape structure that can overcome the drawbacks of the prior art devices as described above.

The configuration of the present invention will be described below using the illustrated embodiment as an example.

FIG. 1 shows a perspective view of a diaper to which the binding tape structure according to the present invention is applied, viewed from the front side. The diaper 1 is composed of a crotch area 2, a front side part 3, and a back side part 4. They are joined by such a joining tape structure 7. In the present invention, the structure of the diaper 1 itself is not considered, but its basic structure is similar to conventional disposable diapers in general use: a water-permeable back sheet that comes into contact with the skin during use; It consists of a water-impermeable back sheet that does not come into contact with the skin, and an absorbent body interposed between the two sheets. The water-permeable top sheet is made of nonwoven fabric, the water-impermeable back sheet is made of synthetic resin film, and the absorbent material is made of pulverized pulp.

FIG. 2 shows the waist circumference end 6 of the back side 4 of the diaper 1.
shows a cross-sectional view of the bonding tape structure 7 of the present invention before use, and reference numeral 8 denotes a top sheet;
9 each indicates a back sheet. The outer peripheral edges of the top sheet 8 and the back sheet 9 are joined to each other by means of adhesive, welding, or the like. Although not shown in FIG. 2, the absorbent body may also be interposed between the top sheet 8 and the back sheet 9 near their outer peripheral edges. The bonding tape structure 7 includes a bonding tape 10, a reinforcing tape 11, and a release tape 12.
It is composed of. The binding tape 10 is made of a material such as a paper material having a relatively high tensile strength, as is known in the art, and has an adhesive surface 10a, one end portion 13,
Free end portion 14 and non-adhesive gripping portion 1 with a bent tip
5, and one end portion 13 is fixed to the back sheet 9. The reinforcing tape 11 is substantially the same as the bonding tape 10 and is made of a synthetic resin film whose surface has been treated with a release agent as necessary, or a sheet having adhesive affinity for adhesives such as kraft paper. It has an adhesive surface 11a and a non-adhesive gripping part 16 whose tip is bent, and the gripping part is made to protrude from the gripping part 15 of the binding tape 10 by an appropriate length. The non-adhesive side of the reinforcing tape is glued.
The surface of the release tape 12 is treated with a release agent to form an adhesive surface 11a of the reinforcing tape 11, as in known tapes.
A large part of the sheet is formed into a size that completely covers the surface sheet 8, and one end 17 thereof is extended from one side end of the front and back sheets 8 and 9 and bent toward the back sheet 9 side. It covers one side edge and is positioned and fixed between the back sheet 9 and the binding tape 10. This release tape 12 includes a bonding tape 10
Bend the free end 14 of the reinforcing tape 11 inward.
The adhesive surface 11a of is adhered.

The reinforcing tape 11 is given an appropriate coloring that can be distinguished from the ground color of the top sheets 8, 9 and the release tape 12.

FIG. 3 shows a cross-sectional view of a state in which both ends 5 of the front side part 3 of the diaper 1 and both ends 6 of the back part 4 of the diaper 1 are connected by a connecting tape structure 7.
To join in this way, the reinforcing tape 11 is peeled off from the release tape 12 by grasping the non-adhesive gripping part 16 of the reinforcing tape 11, and the back side of both ends 5 of the waist circumference is attached via the reinforcing tape 11. The free end 14 of the binding tape 10 is adhered to the sheet 9. In addition, when removing the diaper, checking for the presence of excrement on the diaper, or re-tightening the diaper if it has become loose, grip the non-adhesive gripping portion 15 of the binding tape 10 and remove the binding tape 10. The free end portion 14 of is peeled off from the reinforcing tape 11.

According to the bonding tape structure of the present invention, one end of the release tape extends from one side edge of the front and back sheets, is bent toward the back sheet, and is positioned between the back sheet and the bonding tape. Therefore, the one end, which is the cut end when forming the release tape, will not come into contact with the skin of an infant and cause any damage or injury when the diaper is put on the infant. In addition, one side edge of the front and back sheets where the binding tape and release tape are located is reinforced and will not be damaged.

[Brief explanation of the drawing]

The drawings show embodiments of the tape structure according to the present invention, and FIG. 1 is a perspective view of a state in which a binding tape structure is applied and both ends of the waist circumference on the front and back sides of the diaper are joined together. FIG. 2 is a sectional view of the bonding tape structure before use, and FIG. 3 is a sectional view of the bonding tape structure in use. 1...Diaper, 2...Inseam, 3...Front side,
4...Dorsal part, 5, 6...Both ends of waist circumference, 7...
Bonding tape structure, 8... Top sheet, 9... Back sheet, 10... Bonding tape, 10a... Adhesive surface, 12... Release tape, 14... Free end.

Claims (1)

[Scope of utility model registration request] A water-permeable top sheet, a water-impermeable back sheet,
A binding tape comprising an absorbent body interposed between these and a tape structure for joining the waist circumference, and one end of the tape structure is fixed to at least one end of the back sheet. and a release tape fixed to the top sheet, one end of the release tape extending from one side end of the front and back sheets and bent toward the back sheet, The bonding tape structure is positioned and fixed between the back sheet and the bonding tape.