JPH0658934U - Fastening material for disposable diapers - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to prevent troubles during manufacturing and to improve handling and appearance. [Structure] The fastening material 1 for a disposable diaper of the present invention is the first
And a folding line 6 is provided in the vicinity of the boundary line between the second pressure-sensitive adhesive layer regions 3 and 5 and the peeling layer region 2, and when the tape substrate is folded in a Z shape with the folding line 6 as a fold, The second adhesive layer area 5 and the release layer area 2 are temporarily bonded together, and the back surface of the release layer area 2 and the first adhesive layer area 3 are provided.
By fixing it to the back side of the paper so that it can be peeled off, the flatly folded state can be reliably held, troubles at the time of manufacturing are eliminated, the handling of the disposable diaper is facilitated, and the appearance is improved. To be able to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fastening material for a disposable diaper, and more particularly to a fastening material for a disposable diaper which is composed of a one-piece adhesive tape which is easy to manufacture, easy to use and safe.

[0002]

[Prior art]

 As is well known, various disposable diapers in which a urine absorber is disposed between a front sheet and a back sheet have been put into practical use. FIG. 7 shows a schematic structure of a paper diaper 18 currently on the market, and FIG. 8 shows a cross section of a fastening material 19 attached to the paper diaper.

Usually, the fastening material 19 of a paper diaper with leg gathers is constituted by a two-piece adhesive tape called a fastening tape 20 and a release tape 21. Of the above tapes, the release tape 21 is permanently adhered to the top sheet 22 surface on both side edges of the diaper at the rear side.

On the other hand, one end of the fastening tape 20 is permanently adhered to the surface of the back sheet that is directly behind the release tape 21. Further, the other end is folded back to the top sheet 22 side with the both side edges as a boundary when not attached, and is temporarily adhered to the release layer surface of the release tape 21 in a freely peelable state.

A one-piece fastening material, which is a simplified two-piece fastening material, is also known. This is a structure that combines both the function of the fastening tape and the function of the release tape with one tape piece, and simplifies the structure of the disposable diaper, optimizes and facilitates mounting, simplifies manufacturing, and reduces the price. It is a fastening material that aims to reduce

Conventional examples of the above-mentioned fastening material are disclosed in, for example, JP-A-50-60362, JP-A-53-79643, and JP-A-54-100848. All of the fastening materials disclosed in these publications are formed by bending the tape in a Z shape or an accordion shape, disposing a plurality of adhesive layer areas on one side of the tape, and peeling between the adhesive layer areas. It has a drug layer area.

FIG. 9 shows a conventional fastening material for a tape bent in a Z shape. Further, FIG. 10 shows a state (folded state) before bending. An adhesive layer area 24 is provided on both end areas of this tape, and a peeling layer area 25 is provided at the center of the tape. The adhesive layer area 24a at one end is permanently adhered to the side edge of the back sheet 23 of the diaper, and the adhesive layer area 24b at the other end is folded and temporarily adhered to the release layer area 25. Further, JP-A-57-59805 and JP-A-64-2007 disclose a one-piece fastening material bent in a V shape.

[0008]

[Problems to be solved by the device]

 The one-piece fastening material bent in the V shape is permanently bonded to the top sheet 22 side of the diaper. However, since the top sheet 22 of the diaper is usually made of a liquid-permeable porous material having a small adhesive surface area, it is difficult to increase the adhesive strength.

Further, since the tensile strength of the top sheet 22 is low, there is a drawback that the top sheet 22 is easily damaged when a force is applied to the adhesive tape. On the other hand, the fastening material bent into a Z shape or an accordion shape has high strength because it is permanently bonded to the back sheet 23 side of the diaper. However, the folded and overlapped portion 26 of the tape shown in FIG. 9 has high rigidity, and the portion is protruded from the backsheet 23 surface in a floating state.

The protruding portion 27 has a problem that it is apt to be caught in a part of the machine at the time of manufacturing a disposable diaper, which easily causes a trouble at the time of manufacturing. Furthermore, there were problems such as scratching the skin when handling a disposable diaper, and a poor appearance as a product.

In view of the above problems, it is an object of the present invention to prevent troubles during manufacturing and to improve handleability and appearance.

[0012]

[Means for Solving the Problems]

 The fastening material for a disposable diaper of the present invention is provided with a first adhesive layer area 3, a peeling layer area 2, a second adhesive layer area 5, and a gripping portion 7 in this order from the edge of the surface of the tape substrate. The second adhesive layer area 5 is formed by folding the tape base material in a Z shape with the vicinity of the boundary between the first and second adhesive layer areas 3 and 5 and the release layer area 2 as a fold. And the release layer area 2 are temporarily adhered, and the back surface of the release layer area 2 and the back surface of the first adhesive layer area 3 are detachably fixed.

Another feature of the present invention is that the area of the release layer area 2 is smaller than the area of the second adhesive layer area 5, so that the second adhesive layer area 5 is formed. Part of the first adhesive layer region 3 is temporarily adhered to the first adhesive layer region 3 so that the back surface of the release layer region 2 is fixed to the back surface of the first adhesive layer region 3. It is characterized by

Another feature of the present invention is that the back surface of the peeling layer area 2 is temporarily adhered and fixed to the back surface of the first adhesive layer area 3 by a non-adhesive adhesive 11. It is characterized by

[0015]

[Action]

 Since the fastening material for a disposable diaper of the present invention comprises the above-mentioned technical means, the tape base is formed by making folds near the boundaries between the first and second adhesive layer regions 3 and 5 and the peeling layer region 2, respectively. When the material is folded into a Z shape, the second adhesive layer area 5 and the release layer area 2 are temporarily bonded together, and the back surface of the release layer area 2 and the back surface of the first adhesive layer area 3 are Since it is peelably fixed, the flat folded state is securely retained, which eliminates the possibility of the protruding part catching on a part of the machine when manufacturing a disposable diaper, and The troubles at the time are solved, the handling of the diaper becomes easy, and the appearance is improved.

[0016]

【Example】

 Next, a first embodiment of the fastening material for a disposable diaper of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows the fastening material 1 of the present embodiment in a state in which a Z-shaped bending tape is stretched.

In FIG. 1, 2 is a peeling layer region provided in the central portion of the tape body, 3 is a first adhesive layer region provided on one end side of the tape body, 4 is a cutout portion, and 5 is a cutout portion. The second adhesive layer region provided on the side opposite to the side where the first adhesive layer region 3 is provided, and 6 denote fold lines, respectively.

According to the fastening material of the present embodiment configured as described above, when the second adhesive layer area 5 is adhered to the surface of the release layer area 2 as shown in the perspective view of FIG. Adhesive layer area 5 adheres to the back surface of first adhesive layer area 3 via cutout 4. As a result, the back surface of the release layer area 2 is detachably fixed to the back surface of the first adhesive layer 3, so that the folded and overlapped portion of the tape does not project from the back sheet surface, and the bent portion of the tape is bent. It is possible to reliably prevent various inconveniences that may occur when the overlapped portion is projected from the backsheet surface in a floating state.

As described above, as a means for releasably fixing the back surface of the peeling layer area 2 to the back surface of the first adhesive layer 3, as shown in FIG. In addition to providing the notch 4, various means can be considered.

For example, as shown in FIG. 3, the release layer region 2 may be provided with through holes 10 having appropriate dimensions. In any case, when the area of the peeling layer area 2 is made smaller than the area of the second adhesive layer area 5, the second adhesive layer area 5 is over the peeling layer area 2 and the back surface of the first adhesive layer area 3. It will be temporarily bonded to. As a result, the back surface of the peeling layer area 2 is fixed to the back surface of the first adhesive layer area 3, and the folded and overlapped portion of the tape does not project from the back sheet surface.

As shown in FIG. 4, the non-adhesive adhesive 11 may be applied to either the back surface of the release layer area 2 or the back surface of the first adhesive layer area 3. By doing so, in the state of being folded along the fold line 6, the back surface of the peeling layer area 2 is fixed to the back surface of the first adhesive layer area 3 in a peelable manner. The folded and overlapped part of the tape does not project from the backsheet surface. As the non-tacky adhesive 11, for example, hot melt JM1010 manufactured by Nippon Fuller can be used.

As a method for producing the peeling layer area 2, the first adhesive layer area 3, the second adhesive layer area 5, and the holding portion 7, a known method for producing a pressure-sensitive adhesive tape can be used. For example, as shown in FIG. 10, the adhesive layer regions 24a and 24b can be formed by applying an adhesive agent to one surface of a single tape base material.

Further, as shown in FIG. 5, two pieces of pressure-sensitive adhesive tape 13a and 13b are adhered and bridged to both ends of the peeling tape piece 12, and a gripping piece 14 is attached to one end of the pressure-sensitive adhesive tape 13b. Can be configured by attaching.

Further, as shown in FIG. 6, a release tape may be attached to the center of one pressure-sensitive adhesive tape 15 and a small piece 17 of ordinary plastic or paper tape may be attached to one end of the pressure-sensitive adhesive tape 15.

The notch 4 of the fastening material 1 shown in FIG. 2 or the through hole 10 shown in FIG. 3 may be formed by any method. For example, it can be easily manufactured by cutting off the peeling layer region of the tape with a cutter. Moreover, these can be easily manufactured even if the plastic tape is cut by heat. Further, the non-adhesive adhesive 11 in FIG. 4 may be any of a hot melt type, an emulsion type and a solvent type adhesive, and its application position is preferably on the back surface of the first adhesive layer region 3, but the release layer It may be the back surface of the area 2.

[0026]

【The invention's effect】

 Since the present invention is a one-piece type with a simple structure as described above, it is easy to manufacture and inexpensive. Moreover, since it is permanently bonded to the pack sheet, a strong bonding strength can be obtained. Furthermore, since the conventional protruding portion bent in the Z shape is fixed, the inconvenience of causing trouble during manufacturing is eliminated, the handling of the disposable diaper is facilitated, and the appearance can be improved.

[Brief description of drawings]

FIG. 1 is a plan view of a fastening material according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the fastening material of the first embodiment is folded.

FIG. 3 is a perspective view showing a state in which the fastening material of the second embodiment is folded.

FIG. 4 is a perspective view showing how the fastening material of the third embodiment is folded.

FIG. 5: Release layer area, first adhesive layer area, second adhesive layer area,
It is a side view which shows an example of the method of manufacturing the holding part.

FIG. 6 is a release layer area, a first adhesive layer area, a second adhesive layer area,
It is a side view which shows the other example of the method of manufacturing the holding part.

FIG. 7 is a plan view showing a schematic configuration of a disposable diaper.

FIG. 8 is a cross-sectional view of the fastening material attached to the disposable diaper.

FIG. 9 is a side view showing a schematic configuration of a fastening material for a tape that is conventionally bent in a Z shape.

FIG. 10 is a side view of a conventional fastening material showing a state (folded state) before bending.

[Explanation of symbols]

 1 Fixing Material 2 Peeling Layer Area 3 First Adhesive Layer Area 4 Notch 5 Second Adhesive Layer Area 6 Folding Line 7 Holding Part 10 Through Hole 11 Non-Adhesive Adhesive 12 Peeling Tape Piece 13 Pressure Sensitive Adhesion Tape 14 Holding piece 15 Release tape

Claims (3)

[Scope of utility model registration request] 1. A first adhesive layer region 3, a peeling layer region 2, a second adhesive layer region 5, and a gripping portion 7 in this order from the edge of the surface of the tape base material.
And the second adhesive layer area 5 is formed in a state in which the tape base material is folded into a Z shape with the vicinity of the boundary line between the adhesive layer areas 3 and 5 and the release layer area 2 as a fold. And the release layer area 2 are temporarily adhered to each other, and the back surface of the release layer area 2 and the back surface of the first adhesive layer area 3 are detachably fixed to each other. Fastening material. 2. The release layer area 2 is formed to have an area smaller than that of the second adhesive layer area 5, so that a part of the second adhesive layer area 5 is part of the first adhesive layer area. 3 is temporarily adhered to a part of the peeling layer 3, and as a result, the back surface of the release layer area 2 is the first
The fastening material for a disposable diaper according to claim 1, wherein the fastening material is detachably fixed to the back surface of the adhesive layer region 3. 3. The back surface of the release layer area 2 is temporarily adhered to the back surface of the first adhesive layer area 3 by a non-adhesive adhesive 11 and is releasably fixed.
The fastening material for the disposable diaper described.