Back adhesive structure convenient for stripping release film

Abstract

The utility model relates to a back adhesive structure convenient for stripping a release film, which comprises a heat insulation pad, a first double-sided adhesive layer arranged on the upper surface of the heat insulation pad, first release paper arranged on the upper surface of the first double-sided adhesive layer, a second double-sided adhesive layer arranged on the lower surface of the heat insulation pad, and second release paper arranged on the lower surface of the second double-sided adhesive layer, l-shaped openings are formed in the same ends of the first release paper and the second release paper, a first retaining film is arranged at the position, corresponding to the L-shaped openings, of the upper surface of the first release paper, and a second retaining film is arranged at the position, corresponding to the L-shaped openings, of the lower surface of the second release paper. According to the back adhesive structure convenient for stripping the release films, the PET films are arranged at the stripping ends of the first release paper and the second release paper, so that the strength of the release paper during stripping can be increased, the release paper can be effectively prevented from being torn, meanwhile, the stripping ends of the release paper can be conveniently lifted for stripping due to the arrangement of the L-shaped openings, the stripping difficulty is reduced, and the service life of the release paper is prolonged. And the problem that the assembly is scrapped due to the fact that the double-faced adhesive tape is dragged up when the release paper is torn off is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of double-sided adhesives, in particular to a back adhesive structure which is convenient for peeling off a release film. Background Art

[0002] Double-sided tape is a common adhesive tool composed of a film and a release paper. It is widely used in the digital electronics industry, the automotive industry, the home appliance industry, the construction elevator industry, and various audio-visual equipment and toys. When using traditional double-sided tape, the film and the release paper of the double-sided tape are tightly adhered, which makes it difficult to peel off the release paper, thus affecting the actual use efficiency; furthermore, when the double-sided tape is attached to the product, the double-sided tape and the finished product will not be firmly bonded, resulting in the double-sided tape being dragged up when the release paper is torn off, causing the assembly to be scrapped. The release paper is designed to be flush with the double-sided tape body, which will result in the release paper being easily torn due to lack of force. Therefore, the peeling of the release paper will greatly increase the difficulty of manual operation, which will directly lead to more labor time and reduced work efficiency. Therefore, for industries that widely use double-sided tape, it is of great significance to solve the problem of peeling off the release paper. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a back adhesive structure that is convenient for peeling off a release film. The back adhesive structure that is convenient for peeling off a release film can increase the strength of the release paper when peeling off by arranging a PET film at the peeling ends of the first release paper and the second release paper, and can effectively prevent the release paper from being torn. At the same time, the arrangement of the L-shaped opening facilitates lifting the peeling end of the release paper for peeling, thereby reducing the difficulty of peeling and avoiding the problem of dragging up the double-sided adhesive when tearing off the release paper, resulting in assembly scrapping.

[0004] The purpose of the utility model is achieved through the following technical scheme: a back adhesive structure that is easy to peel off a release film, including a thermal insulation pad, a first double-sided adhesive layer arranged on the upper surface of the thermal insulation pad, a first release paper arranged on the upper surface of the first double-sided adhesive layer, a second double-sided adhesive layer arranged on the lower surface of the thermal insulation pad, and a second release paper arranged on the lower surface of the second double-sided adhesive layer, wherein the first release paper and the second release paper are both provided with an L-shaped opening at the same end, a first retaining film is provided at the upper surface of the first release paper corresponding to the L-shaped opening, and a second retaining film is provided at the lower surface of the second release paper corresponding to the L-shaped opening.

[0005] Furthermore, an inner groove opening is formed at one end of the first double-sided adhesive layer and the second double-sided adhesive layer near the L-shaped opening, and the edge of the L-shaped opening of the first release paper extends to cover the inner groove opening of the first double-sided adhesive layer, and the edge of the L-shaped opening of the second release paper extends to cover the inner groove opening of the second double-sided adhesive layer.

[0006] Furthermore, the first release paper, the first double-sided adhesive layer, the second release paper and the second double-sided adhesive layer are all configured to be in a "dumbbell" shape.

[0007] Furthermore, the first retention film and the second retention film are both PET films.

[0008] Furthermore, the thermal insulation pad is an aerogel thermal insulation pad.

[0009] Furthermore, the distance between the opening edge of the L-shaped opening of the first release paper and the second release paper and the edge of the covered thermal insulation pad is A, and A is 2-6 mm.

[0010] Furthermore, the opening directions of the L-shaped opening of the first release paper and the L-shaped opening of the second release paper are arranged opposite to each other.

[0011] The beneficial effects of the utility model are as follows: the adhesive backing structure of the utility model which is convenient for peeling off the release film can increase the strength of the release paper when peeling off by arranging the PET film at the peeling ends of the first release paper and the second release paper, and can effectively prevent the release paper from being torn; at the same time, the arrangement of the L-shaped opening cooperates with the inner groove of the double-sided adhesive layer to facilitate lifting the peeling end of the release paper for peeling off, thereby reducing the peeling difficulty and avoiding the problem of dragging up the double-sided adhesive when tearing off the release paper, resulting in assembly scrapping. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model;

[0013] Figure 2 It is an exploded schematic diagram of the utility model;

[0014] Figure 3 It is a partially enlarged schematic diagram of the utility model.

[0015] The figures are marked as follows: 1-first release paper, 11-L-shaped opening, 2-first double-sided adhesive layer, 21-inner groove opening, 3-thermal insulation pad, 4-second double-sided adhesive layer, 5-second release paper, 6-first retaining film, 7-second retaining film, 8-A. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of those skilled in the art, the following embodiments and attached Figure 1-3 To further illustrate the present invention, the contents mentioned in the implementation modes are not intended to limit the present invention.

[0017] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly on the other element or indirectly on the other element.

[0018] When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0019] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0021] In the description of the present application, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0022] See Figure 1-3 A back adhesive structure for facilitating peeling of a release film includes a thermal insulation pad 3, a first double-sided adhesive layer 2 arranged on the upper surface of the thermal insulation pad 3, a first release paper 1 arranged on the upper surface of the first double-sided adhesive layer 2, a second double-sided adhesive layer 4 arranged on the lower surface of the thermal insulation pad 3, and a second release paper 5 arranged on the lower surface of the second double-sided adhesive layer 4, wherein the first release paper 1 and the second release paper 5 are both provided with an L-shaped opening 11 at the same end, a first retaining film 6 is provided on the upper surface of the first release paper 1 corresponding to the L-shaped opening 11, and a second retaining film 7 is provided on the lower surface of the second release paper 5 corresponding to the L-shaped opening 11.

[0023] In this embodiment, an inner groove opening 21 is formed at one end of the first double-sided adhesive layer 2 and the second double-sided adhesive layer 4 near the L-shaped opening 11, which can reduce the initial and head peeling force when peeling off the first release paper 1 or the second release paper 5, and is more conducive to the peeling of the release paper. The edge of the L-shaped opening 11 of the first release paper 1 extends to cover the inner groove opening 21 of the first double-sided adhesive layer 2, and the edge of the L-shaped opening 11 of the second release paper 5 extends to cover the inner groove opening 21 of the second double-sided adhesive layer 4.

[0024] The adhesive backing structure of the present embodiment facilitates peeling of the release film, by setting a PET film at the peeling end of the first release paper 1 and the second release paper 5, which can increase the strength of the release paper when peeling, and can effectively prevent the release paper from being torn. At the same time, the setting of the L-shaped opening 11 cooperates with the inner groove 21 of the double-sided adhesive layer to facilitate lifting the peeling end of the release paper for peeling, thereby reducing the difficulty of peeling and avoiding the problem of dragging up the double-sided adhesive when tearing off the release paper, resulting in assembly scrapping.

[0025] In this embodiment, the first release paper 1, the first double-sided adhesive layer 2, the second release paper 5 and the second double-sided adhesive layer 4 are all configured to be in a "dumbbell" shape.

[0026] In this embodiment, by setting the first release paper 1 and the second release paper 5 in a "dumbbell" shape, the overall peeling force can be reduced when peeling off the release papers; and setting the first double-sided adhesive layer 2 and the second double-sided adhesive layer 4 in a "dumbbell" shape can effectively reduce the peeling force in the middle section. The setting of the above structure improves the working efficiency of the peeling back adhesive structure as a whole.

[0027] In this embodiment, the first retaining film 6 and the second retaining film 7 are both PET films, and the adopted PET films have the characteristics of high tensile strength, resistance to burning and cracking, and not easy to be damaged, and can effectively prevent the problem of tearing.

[0028] In this embodiment, the thermal insulation pad 3 is an aerogel thermal insulation pad 3 .

[0029] In this embodiment, the distance between the opening edge of the L-shaped opening 11 of the first release paper 1 and the second release paper 5 and the edge of the covered thermal insulation pad 3 is A8, and A8 is 2-6mm; the above dimensions can be set according to actual conditions and needs, with the purpose of reducing the "initial" peeling force and improving efficiency.

[0030] In this embodiment, the L-shaped opening 11 of the first release paper 1 and the L-shaped opening 11 of the second release paper 5 are arranged opposite to each other, so that the user can tear off the first release paper 1 or the second release paper 5 from the L-shaped opening 11 .

[0031] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. A back adhesive structure that facilitates the peeling of a release film, characterized in that: It includes a thermal insulation pad, a first double-sided adhesive layer arranged on the upper surface of the thermal insulation pad, a first release paper arranged on the upper surface of the first double-sided adhesive layer, a second double-sided adhesive layer arranged on the lower surface of the thermal insulation pad, and a second release paper arranged on the lower surface of the second double-sided adhesive layer, wherein the first release paper and the second release paper are both provided with an L-shaped opening at the same end, a first retaining film is provided at the upper surface of the first release paper corresponding to the L-shaped opening, and a second retaining film is provided at the lower surface of the second release paper corresponding to the L-shaped opening.

2. The adhesive backing structure for facilitating peeling of a release film according to claim 1, characterized in that: An inner groove opening is formed at one end of the first double-sided adhesive layer and the second double-sided adhesive layer near the L-shaped opening, the edge of the L-shaped opening of the first release paper extends to cover the inner groove opening of the first double-sided adhesive layer, and the edge of the L-shaped opening of the second release paper extends to cover the inner groove opening of the second double-sided adhesive layer.

3. The adhesive backing structure for facilitating peeling of a release film according to claim 1, characterized in that: The first release paper, the first double-sided adhesive layer, the second release paper and the second double-sided adhesive layer are all configured to be in a "dumbbell" shape.

4. The adhesive backing structure for facilitating peeling of a release film according to claim 1, characterized in that: The first retaining film and the second retaining film are both PET films.

5. The adhesive backing structure for facilitating peeling of a release film according to claim 1, characterized in that: The thermal insulation pad is an aerogel thermal insulation pad.

6. The adhesive backing structure for facilitating the peeling of the release film according to claim 1, characterized in that: The distance between the opening edge of the L-shaped opening of the first release paper and the second release paper and the edge of the covered thermal insulation pad is A, and A is 2-6 mm.

7. The adhesive backing structure for facilitating the peeling of the release film according to claim 1, characterized in that: The L-shaped opening of the first release paper and the L-shaped opening of the second release paper are arranged in opposite directions.

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