JP2523710Y2 - Fastening tape for disposable diapers - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastening tape used for fastening a waist around a back and forth of a disposable diaper.

[0002]

2. Description of the Related Art In a disposable diaper, a free end of a fastening tape is extended from left and right side edges of one waist circumference end, and this free end is detachably fastened to the other waist circumference side edge. Techniques for wearing a diaper by connecting both waist areas are well known.
As one of such tapes, a fastening tape is formed by pairing a first tape member having a loop and a second tape member having a hook, and when the first and second tape members are pressed against each other, the hook and the hook are formed. A structure in which a loop is detachably fastened is used. In this fastening tape, for example, one end of the second tape member is fixed to the side edge of the rear body of the diaper, and the opposite end extends from the side edge of the rear body to be a free end. On the other hand, the first tape member is fixed to the back sheet near the side edge of the front body. To wear a diaper, the second
The free end of the tape member is pressed against the first tape member, and the hook and the loop are fastened to each other to connect the front and rear bodies at the waist side.

[0003]

The following is a description of such a conventional fastening tape with reference to the drawings.

FIGS. 3A and 3B are side views illustrating the structure of a conventional fastening tape. FIG. 3A shows a first tape member 42 provided with a loop 41 on the tape surface, and FIG. A second tape member 44 provided with a hook 43 is shown, and a fastening tape is constituted by the pair of tape members 42 and 44. The substantially inverted J-shaped hook 43 is formed by cutting a substantially O-shaped loop 41 at a cutting portion 46, and a part of the loop 41 remains as a standing piece 48.
By the way, how to make such a hook is
It is disclosed in JP-A-12603. When the first and second tape members 42 and 44 press the loop 41 against the hook 43, the curved portion 47 of the hook 43 passes through the loop 41 and is fixed to each other. First and second tape members 42.4
4 and the hook 4
3 are elastically deformed, and their fastening is released. This fastening tape has a problem that the tip of the standing piece 48 gives a stimulus that pierces the skin.

FIG. 4 is a side view of another prior art hook 43 capable of solving this problem.
The hook 43 includes an inverted V-shaped loop 41 including an imaginary line portion.
The shaft portion 50 rises at an acute angle α from the tape surface of the second tape member 44, and the free end 51 of the shaft portion 50 curves toward the surface of the second tape member 44. As a result, a curved portion 47 is formed, and a standing piece 48 formed by cutting the loop 41 rises at an acute angle β. When the angles α and β of the hook 43 and the standing piece 48 are appropriately reduced, when they come into contact with the skin, they lie down flexibly and do not give strong stimulation. However, in such a hook 43, as the angles α and β become smaller, the degree of bending of the bending portion 47 tends to be larger and the depth of the bending tends to be shallower, so that the hook 43 tends to come off from the other-side loop. There is.

[0006] In view of the above, the present invention has been made to solve the above-mentioned conventional problems by providing means for increasing the fastening force to the loop in the fastening tape of the disposable diaper, inside the curved portion of the hook.

[0007]

The gist of the present invention to solve the above problems is as follows.

In this invention, a disposable diaper is constituted by interposing an absorber between the water-permeable top sheet and the water-impermeable back sheet. One end of one of a fastening tape composed of a first tape member having a detachable loop and a second tape member having a hook is attached to a side edge around one waist of the diaper. With
The opposite end is a free end extending from the side edge, and the other of the tape members is attached to the back sheet near the side edge around the other waist, and the two waist portions are detachably fastened. It is assumed that a fastening tape is used.

[0009] This invention is based on the above premise,
Hand to increase the fastening force against the loop inside the bend
As a step, the adhesive applied inside the curved part of the hook and the adhesive
And at least serrated irregularities provided inside the
It is characterized by having one of them.

[0010]

In the fastening tape of the disposable diaper according to the present invention, the hook of the second tape member is provided with a means for increasing the fastening force.
Or, even if it is shallow, it is firmly attached to the loop and does not come off easily.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the fastening tape according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of a disposable diaper 2 using a fastening tape 1 according to the present invention, assembled in a worn state. The diaper 2 has an absorber 5 interposed between a water-permeable top sheet 3 and a water-impermeable back sheet 4, and the front and back sheets are closely joined around the absorber 2. Around the legs,
An elastic member 6 is adhered between the front and back sheets 3 and 4 under tension to form gathers 7. The front body 8 and the back body 9 of the diaper 2 are detachably fastened via a fastening tape 1 at the waist circumference side. The fastening tape 1 has a first tape member 11 having a back side fixed to the back sheet 3 at a side edge of the front body 8 and a front side of one end 13 fixed to the back sheet 3 at a side edge of the back body 9. In addition, the free end portion 14 extending from the side edge is constituted by the second tape member 12 which is detachably fixed to the first tape member 11.

FIG. 2 is a side view showing an embodiment of the second tape member 12 by (A) and (B). FIG.
In (A), the hook 22 is the surface 21A of the tape portion.
And a curved portion 24 at the free end of the shaft portion 23, and an ethylene-vinyl acetate-based adhesive for increasing the fastening force to the loop on the other side of the fastening. An agent 25 is applied inside the curved portion 24. From the surface 21A of the tape portion, an erecting piece 27 stands at an acute angle β, and there is a gap 26 between its free end and the free end of the hook 22. The hook 22 is formed by cutting the inverted V-shaped loop 28 to which these two free ends are connected at the gap 26, and the upright piece 27 is the remaining portion of the loop 28 generated by this cutting. In FIG. 2 (B), serrated irregularities 29 are provided inside the curved portion 24 instead of the adhesive 25.

As the first tape member 11, a tape member 42 shown in FIG. 3A having a loop 41 shown as a conventional technique can be used, so that the illustration is omitted. However, the shape of the loop is not limited to the O-shape, and may be an appropriate shape such as an inverted V-shape.

First tape member 11 and second tape member 12
In such a fastening tape 1 comprising the following, when the two tape members 11 and 12 are pressed against each other, the hook 22 is firmly fastened to the O-shaped loop 41 via the adhesive 25 and the saw-toothed unevenness 29.

[0016]

The fastening tape according to the present invention is provided with means for increasing the fastening force to the loop inside the curved portion of the hook, so that the fastening tapes can be stopped even if the degree of bending is large or shallow. The hook and loop in the worn state do not come off easily.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disposable diaper using the fastening tape according to the present invention.

FIG. 2 is a side view of the second tape member, showing the embodiment of the tape member by (A) and (B).

FIG. 3 is a side view of the first and second tape members of the fastening tape according to the prior art, indicated by (A) and (B).

FIG. 4 is a side view of a second prior art tape member in an aspect different from that of FIG. 3;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fastening tape 2 disposable diaper 3 top sheet 4 back sheet 11 first tape member 12 second tape member 22 hook 25 adhesive 29 unevenness

Claims (2)

(57) [Scope of request for utility model registration] 1. A disposable diaper having an absorbent body interposed between a water-permeable top sheet and a water-impermeable back sheet, and provided with loops which can be engaged and disengaged from each other at a side edge around one waist of the diaper. Attaching one end of a fastening tape comprising a first tape member and a second tape member having a hook, and forming a facing end thereof as a free end extending from the side edge; A fastening tape for a disposable diaper that attaches the other of the fastening tapes to the back sheet near the side edge around the other waist to fasten the free end, and removably fastens the waist around the waist. An adhesive is applied to the inside of the curved portion of the hook as a means for increasing the fastening force of the hook to the loop.
Fastening tape, characterized in that are. 2. The fastening tape according to claim 1, wherein the means for increasing the fastening force comprises a curved portion of the hook.
Instead of the adhesive applied inside, the curved part of the hook
2. The fastening tape according to claim 1, wherein the fastening tape has a serrated shape provided on the inside .