JP3255983B2 - Structure of disposable body warmer and disposable body warmer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates is always separators relates Cairo discarded have <br/> structure and use of the release portion of the disposable body warmer which does not require.

[0002]

2. Description of the Related Art Conventionally, when a disposable article such as a disposable body warmer is fixed to an adherend such as clothes, a double-sided tape is used, or a hot-melt type adhesive is applied and provided thereon. The used separator was removed before use.

[0003]

However, in this method, it is necessary to peel off or discard the separator, which makes the use complicated. Also, from the viewpoint of protection of the global environment, there is a growing need to suppress discarded items as much as possible, and there is a strong demand for disposable warmers that do not require a separator.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made to improve the above problems, and will be described in detail in the following examples.
The separator which has been indispensable conventionally can be omitted.

That is, the present invention1Is the supporting substrateOne side
In addition, the first pressure-sensitive adhesive layer and the release agent layerIn the direction of the support substrate planeWhen
Provided so thatOther sideAll over orWhole surface
Partial surfaceIs provided with a second pressure-sensitive adhesive layer (release agent layer).
Is not provided)Other sideThe second
Adhered to disposable body warmer with adhesive layer and aboveOne sideFirst
So that the adhesive layer and the release agent layer ofBendPile
To be peelable between the adhesive layer and the release agent layer.
The structure of the peeling part of the disposable body warmer
provide.

Further, the present invention2Is the supporting substrateOne side
In addition, the first pressure-sensitive adhesive layer and the release agent layerIn the direction of the support substrate planeWhen
Provided so thatOther sideAll over orWhole surface
Partial surfaceIs provided with a second pressure-sensitive adhesive layerWas(Release agent layer
Is not provided) adhesive sheet,Other sideThe second
Adhesive layerByFor disposable CairoGlue the above one sideFirst
Bend so that the pressure-sensitive adhesive layer and release agent layer face each otherhandSuperposition
To be peelable between the adhesive layer and the release agent layer
CanConfigurationProvide disposable body warmers.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of an adhesive sheet used for a disposable body warmer according to the present invention . A first adhesive layer 2 and a release agent layer 3 are supported on one side of a support substrate 1. Substrate flat surface
Alternately provided so as to each other becomes the direction, and the other surface of the entire surface, the second adhesive layer 4 is provided. The pressure-sensitive adhesive sheet may be rolled together with a separator (not shown) into a roll to form a roll.

FIG . 2 is a perspective view of a disposable body warmer of the present invention .
FIG. 4 is a cross-sectional view showing another example of the pressure-sensitive adhesive sheet to be used, and shows a supporting substrate 1
On one side of the first pressure-sensitive adhesive layer 2 and the release agent layer 3 is the supporting substrate Rights
It is provided so as to be adjacent to the surface direction , and covers the entire surface of the other surface.
The second pressure-sensitive adhesive layer 4 is provided on the crossing partial surface (the release agent layer is not provided).

FIG. 3 (a) is a perspective view showing an example of a disposable body warmer of the present invention using the adhesive sheet for disposable body warmers of FIG. 2 , and FIG. 3 (b) is a cross-sectional view thereof, showing a second adhesive. the layer 4 is bonded to the disposable body warmer T, the first pressure-sensitive adhesive layer 2 and the release agent layer 3 is superposed by folding so as to face, it is possible to freely peeling both layers.

The pressure-sensitive adhesive sheet used in the disposable body warmer of the present invention is characterized by its structure as described above, and the material of each component is not limited at all. However, in the present invention, for example, a nonwoven fabric, a plastic film, or the like is used as the support base material, and it is preferable to appropriately select a material that is particularly soft and stiff. As the pressure-sensitive adhesive, a styrene-based pressure-sensitive adhesive is preferably used. In particular, a pressure-sensitive adhesive composed of SEBS (styrene-ethylene-butadiene-styrene copolymer) is preferable, and other acrylic-based, rubber-based, and olefin-based pressure-sensitive adhesives are preferable. Used. As the release agent, a release agent such as a silicone-based or long-chain acryl-based release agent is generally used.

In the present invention, as shown in FIGS. 1 to 3, both ends or one end of the pressure-sensitive adhesive tape are made to be dry edges 6, so that the end portions can be easily turned during use.

[0012]

The structure of the peeling portion of the disposable body warmer of the present invention
And the disposable body warmer has a specific structure,
The separator, which has been conventionally indispensable, can be omitted, and there is an advantage of solving the complexity of use, environmental problems, and cost problems, and it is suitably used as a disposable warmer.

[Brief description of the drawings]

FIG. 1 is an adhesive sheet used for a disposable body warmer of the present invention .
FIG.

FIG. 2 is an adhesive sheet used for the disposable body warmer of the present invention .
FIG. 14 is a cross-sectional view showing another example.

FIG . 3 (a) is an adhesive sheet for the disposable body warmer of FIG. 2;
Perspective view showing an example of a disposable body warmer of the present invention using a sheet
FIG. 3B is a cross-sectional view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support base material 2 1st adhesive layer 3 Release agent layer 4 2nd adhesive layer 6 Dry edge T Disposable body warmer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61F 7/08 C09J ^7/ 00-7/04

Claims (2)

(57) [Claims] (1) a first pressure-sensitive adhesive layer and a release agent layer are provided on one surface of a support substrate so as to face each other in a plane direction of the support substrate ;
In addition , the pressure-sensitive adhesive sheet provided with the second pressure-sensitive adhesive layer on the entire surface of the other surface (or a partial surface over the entire surface (no release agent layer)) is disposable with the second pressure-sensitive adhesive layer on the other surface . The disposable body warmer is configured such that the first pressure-sensitive adhesive layer on one side and the release agent layer are folded and overlapped so as to face each other, and can be peeled off between the pressure-sensitive adhesive layer and the release agent layer. The structure of the peeling part. 2. A method according to claim 1, wherein the first pressure-sensitive adhesive layer and the release agent layer are provided on one side of the supporting base material so as to be in the plane direction of the supporting base material .
And the second adhesive layer is provided on part surface over the other surface of the entire surface or the entire surface (the release agent layer is not provided) to the pressure-sensitive adhesive sheet, the disposable body warmer by the second pressure-sensitive adhesive layer of the other surface The first adhesive layer on one side and the release agent layer are folded and overlapped so as to face each other, and can be separated between the adhesive layer and the release agent layer. br /> Cairo.