JPH0657639U - Adhesive silicone rubber member - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an adhesive silicone rubber member capable of preventing the release paper from being peeled off and easily adhered to the surface of an object. A main body 11 made of silicone rubber, a condensation type one-component silicone curing agent layer 12 provided on an adhesive side surface of the main body, and an adhesive layer made of a double-sided adhesive tape or sheet provided on the surface of the curing agent layer. An adhesive silicone rubber member 10 comprising 13 and a release paper 14 provided on the surface of the adhesive layer.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an adhesive silicone rubber member that is adhered to another object by an adhesive layer.

[0002]

[Prior art]

 Conventionally, as an adhesive silicone rubber member, a silicone-based pressure-sensitive adhesive layer is provided on the surface of the adhesive side of the silicone rubber member, and a double-sided adhesive tape or sheet layer is provided on the surface of the silicone-based pressure-sensitive adhesive layer. It is known that a release paper is provided on the surface of the sheet and the release paper is peeled off at the time of bonding (Japanese Utility Model Publication No. 4-23639).

However, the silicone-based pressure-sensitive adhesive used for the above-mentioned silicone rubber member is generally composed of a silicone resin, a film-forming substance and silicone rubber, and when it is in long contact with the double-sided adhesive tape or sheet layer, It was easy to transfer to the acrylic adhesive that composes the adhesive for double-sided adhesive tape or sheet and to cure the acrylic adhesive. Therefore, in the conventional adhesive silicone rubber member, the release paper may be difficult to be adhered to the double-sided adhesive tape or the sheet layer and may not be easily peeled off, and may not be adhered to the target object.

[0004]

[Problems to be solved by the device]

 Therefore, the present invention has been made in view of the above points, and provides an adhesive silicone rubber member which can prevent the release paper from peeling off and can be easily adhered to the surface of an object.

[0005]

[Means for Solving the Problems]

 That is, this invention comprises a main body made of silicone rubber, a condensation type one-component silicone curing agent layer provided on the adhesive side surface of the main body, and a double-sided adhesive tape or sheet provided on the surface of the curing agent layer. The present invention relates to an adhesive silicone rubber member comprising an adhesive layer and a release paper provided on the surface of the adhesive layer.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a sectional view showing an example of the adhesive silicone rubber member of the present invention, FIG. 2 is a perspective view showing an example of a method of providing a curing agent layer on the main body, and FIG. 3 is a sectional view thereof.

As shown in FIG. 1, the adhesive silicone rubber member 10 of the present invention comprises a main body 11, a curing agent layer 12, an adhesive layer 13, and a release paper 14. The adhesive silicone rubber member 10 is used by peeling off the release paper 14 and attaching the adhesive layer 13 to a predetermined position of the target object.

The main body 11 is made of a known silicone rubber formed in a predetermined shape, and the hardener layer 12 is provided on the adhesive side surface thereof. The curing agent layer 12 is for adhering an adhesive layer 13 described later to the main body 11, and is applied or transferred onto the surface of the main body 11.

As the curing agent used for the curing agent layer 12, a condensation type one-component silicone curing agent that does not easily migrate to the adhesive layer 13 is preferably used.

The condensation type one-component silicone curing agent is a liquid or paste composition containing a crosslinking agent, a catalyst and the like, and is often filled in a closed container such as a tube or a cartridge. When the condensation type one-component silicone curing agent is used, it is extruded onto the adhesive surface and exposed to the air during use, thereby starting a crosslinking reaction with the moisture in the air to form a rubber-like elastic adhesive.

Since the curing agent is a single component, no special operations such as mixing, defoaming, heating, pressurizing, etc. are required for its use, and anyone can easily handle it. Furthermore, since there is little change in viscosity with temperature, it is possible to work regardless of the season. In addition, the condensation type one-component silicone curing agent has less heat generation and heat absorption during curing and a relatively small mass reduction, so that it has the advantage that heat stress, heat shock, or shrinkage deformation does not easily occur on the adhesive surface. is there.

There are various types of condensation-type one-component silicone curing agents used here, depending on their appearance and the type of crosslinking agent contained, and non-flowing ones are trade names “TS E370” and “TSE382”. , "TSE392", and those having fluidity include "TSE397" and "TSE399" (both manufactured by Toshiba Silicone Co., Ltd.).

Next, the curing mechanism of this condensation type one-component silicone curing agent will be shown. R in the chemical formula is, for example, a terminal group such as a methyl group, an ethyl group or a propyl group. X is a substitution group such as a methoxy group, an acetoxy group, an oxime group, an amide group and the like.

[0014]

[Chemical 1]

When the condensation type one-component silicone curing agent is not exposed to air, the condensation type one-component silicone curing agent maintains temporary stability in a state where the polymer terminal is blocked with a crosslinking agent. At the same time as the curing agent is applied to the adhesive surface of the main body, the X group in the polymer is replaced with the OH group of water in the air, and further a condensation reaction occurs to form a crosslink of the polymer. It is considered that these reactions proceed in sequence, and finally, they are cross-linked in a mesh form to form a rubber-like elastic body.

An adhesive layer 13 is provided on the surface of the curing agent layer 12. The adhesive layer 13 is made of a tape or sheet containing a known acrylic adhesive, and is provided with a release paper 14 on the side of the adhesive surface with other objects. A publicly known double-sided tape can be used for the adhesive layer 13 and the release paper 14. When the adhesive layer 13 is formed on the curing agent layer 12, a curing agent is applied to the main body 11 in order to increase the adhesive strength thereof, and then the curing reaction is allowed to proceed slightly before the adhesive layer 13 is formed. Is desirable.

Next, the adhesiveness of the adhesive silicone rubber member of the present invention and the release state of the release paper are tested. First, "TSE370" as a condensation type one-component silicone curing agent is applied to the surface of a silicone rubber sheet molded to 100 mm x 100 mm x 5 mm to a thickness of about 0.5 mm, and an adhesive layer and release paper are further applied to the surface. Adhesive layer of double-sided tape consisting of is attached. 20 sheets of the adhesive silicone rubber member thus obtained were prepared and left at 20 ° C. for 30 days. Then, when the release paper 14 was peeled off and adhered to the target object, both the peeled state of the release paper and the adhered state to the target object were good.

A method of providing the curing agent layer 12 on the main body 11 will be described with reference to FIGS. 2 and 3. As shown in the figure, a screen 20 in which a film material 22 is formed in a frame material 21 is arranged above the main body 11 of the silicone rubber sheet. The film material 22 is composed of a mesh-shaped permeation part 23 through which the curing agent 12a can pass, and a coating part 24 through which the curing agent 12a does not pass. The curing agent 12a is placed on the upper side of the film material 22, and as shown in FIG. 3, a jig 25 such as a spatula is pressed and slid from above the film material 22 to pass through the transparent portion 23. It is extruded on the main body 11 to form a uniform layer.

[0019]

[Effect of device]

 As shown and described above, according to this invention, the silicone in the curing agent layer does not migrate to the adhesive layer such as the double-sided tape. Therefore, not only does the release paper not stick to the rubber member to prevent it from peeling off, but also the adhesiveness of the pressure-sensitive adhesive is always good, and the adhesive can be easily adhered to the target surface.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of an adhesive silicone rubber member of the present invention.

FIG. 2 is a perspective view showing an example of a method of providing a curing agent layer on the main body.

FIG. 3 is a sectional view thereof.

[Explanation of symbols]

 10 Adhesive Silicone Rubber Member 11 Main Body 12 Curing Agent Layer 13 Adhesive Layer 14 Release Paper

Claims (1)

[Scope of utility model registration request] 1. A main body made of silicone rubber, a condensation type one-component silicone curing agent layer provided on the adhesive side surface of the main body, and an adhesive layer made of a double-sided adhesive tape or sheet provided on the surface of the curing agent layer. An adhesive silicone rubber member comprising a release paper provided on the surface of the adhesive layer.