Foam double-sided adhesive tape

Abstract

A foam monomer of the foam double-sided tape is composed of a heavy stripping release film and a foam body layer covering the edge of the lower surface of the heavy stripping release film, the central area of the foam body layer is a hollow area, and the upper surface and the lower surface of the foam body layer are both coated with adhesive layers; the weak mucous membrane is composed of a soft base material layer and a weak adhesive layer, the weak adhesive layer is coated on the contact surface of the soft base material layer and the foam monomer, and the heavy stripping release film and the light stripping release film are bonded through the foam body layer; a cutting line is arranged at the joint of the pull lug part and the heavy stripping release film, and the pull lug part is folded towards the outer side along the cutting line and is positioned between the heavy stripping release film and the weak mucous membrane; the heavy stripping release film of the foam monomer is a PET (Polyethylene Terephthalate) silicone oil-containing release film; and the soft base material layer of the weak mucous film is a PE (Polyethylene) base material layer. According to the foam double-sided adhesive tape, the problem that a large number of foam monomers are difficult to store and transfer due to the fact that the foam monomers are small is avoided, and the defect that the foam monomers are prone to falling off during transfer or use is also avoided.

Description

Technical Field

[0001] The invention relates to a foam double-sided adhesive tape, belonging to the technical field of electronic product processing. Background Art

[0002] Electronic products often require internal functional components to achieve specific purposes, such as heat dissipation, protection, and shock absorption. This is particularly true for mobile phones, tablets, and other electronic components, where double-sided adhesive foam is often required to be attached between two components to achieve the required performance. For example, foam is attached between two components housing a microphone to ensure a tight acoustic cavity. During assembly, foam is first attached to the microphone mounting component at the corresponding position on the component housing the microphone. The component with the foam attached is then assembled with the corresponding component, with the foam attached between the two components. Summary of the Invention

[0003] The purpose of the present invention is to provide a foam double-sided tape, which avoids the problem that the foam monomers are small, resulting in a large amount of foam monomers being difficult to store and transfer, and also avoids the problem that the foam monomers are easy to fall off during transfer or use.

[0004] To achieve the above-mentioned object, the present invention adopts a technical solution as follows: a foam double-sided tape, comprising: a light-peel release film, a weak adhesive film, and a plurality of foam units located between the light-peel release film and the weak adhesive film, wherein the plurality of foam units are arranged at intervals on the light-peel release film, and the foam units are composed of a heavy-peel release film and a foam body layer covering the edge of the lower surface of the heavy-peel release film, wherein the central area of ​​the foam body layer is a hollow area, and the upper and lower surfaces of the foam body layer are coated with an adhesive layer; The weak adhesive film is composed of a soft substrate layer and a weak adhesive layer. The weak adhesive layer is applied to the surface of the soft substrate layer in contact with the foam monomer. The heavy peeling release film and the light peeling release film are bonded through the foam body layer. The soft substrate layer is bonded to the upper surface of the heavy peeling release film through the weak adhesive layer. The heavy-peel release film has a pull ear at one end, and a score line is formed at the connection between the pull ear and the heavy-peel release film. The pull ear is folded outward along the score line and is located between the heavy-peel release film and the weak adhesive membrane; The heavy peeling release film of the foam monomer is a PET release film containing silicone oil, and the soft substrate layer of the weak adhesive film is a PE substrate layer.

[0005] The further improved scheme in the above technical scheme is as follows: 1. In the above solution, the foam monomer is rectangular in shape.

[0006] 2. In the above solution, the light peeling release film is a silicone release film or a non-silicone release film.

[0007] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The foam double-sided adhesive tape of the present invention has several foam units arranged at intervals on a light peeling release film. The foam units are composed of a heavy peeling release film and a foam body layer covering the edge of the lower surface of the heavy peeling release film. The upper and lower surfaces of the foam body layer are both coated with an adhesive layer. The weak adhesive film is composed of a soft substrate layer and a weak adhesive layer. The weak adhesive layer is coated on the surface of the soft substrate layer in contact with the foam units. The heavy peeling release film and the light peeling release film are bonded through the foam body layer, and the soft substrate layer and the upper surface of the heavy peeling release film are bonded through the weak adhesive layer. It not only avoids the problem that the foam monomers are small, which makes it difficult to store and transfer a large number of foam monomers, but also avoids the problem that the foam monomers are easy to fall off during transfer or use, thereby facilitating transfer and use; in addition, the heavy-peel release film has a pull ear at one end, and the connection between the pull ear and the heavy-peel release film has a score line, the pull ear is folded outward along the score line and is located between the heavy-peel release film and the weak sticky membrane, preventing the pull ear from warping up on the light-peel release film and avoiding falling off, and also making it convenient for users to take and place the foam monomers, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Attachment Figure 1 Schematic diagram of the structure of the double-sided foam tape of the present invention; Attachment Figure 2 For attachment Figure 1 AA cross-sectional diagram of .

[0009] In the above figures: 1. Light peel release film; 2. Weak adhesive film; 21. Soft substrate layer; 22. Weak adhesive layer; 3. Foam monomer; 31. Heavy peel release film; 32. Foam body layer; 4. Hollow area; 5. Ear pull part; 6. Score line; 7. Adhesive layer. DETAILED DESCRIPTION

[0010] Example 1: A double-sided foam tape, comprising: a light-peel release film 1, a weak adhesive film 2, and a plurality of foam units 3 located between the light-peel release film 1 and the weak adhesive film 2. The plurality of foam units 3 are arranged at intervals on the light-peel release film 1. The foam units 3 are composed of a heavy-peel release film 31 and a foam body layer 32 covering the edge of the lower surface of the heavy-peel release film 31. The central area of ​​the foam body layer 32 is a hollow area 4. The upper and lower surfaces of the foam body layer 32 are coated with an adhesive layer 7. The weak adhesive film 2 is composed of a soft substrate layer 21 and a weak adhesive layer 22. The weak adhesive layer 22 is applied to the surface of the soft substrate layer 21 in contact with the foam unit 3. The heavy peeling release film 31 is bonded to the light peeling release film 1 through the foam body layer 32. The soft substrate layer 21 is bonded to the upper surface of the heavy peeling release film 31 through the weak adhesive layer 22. The re-peelable release film 31 has a pull-out portion 5 at one end. The connection between the pull-out portion 5 and the re-peelable release film 31 is marked with a score line 6. The pull-out portion 5 is folded outward along the score line 6 and is located between the re-peelable release film 31 and the weak adhesive membrane 2. The heavy peeling release film 31 of the foam unit 3 is a PET release film containing silicone oil, and the soft substrate layer 21 of the weak adhesive film 2 is a PE substrate layer.

[0011] The light peeling release film 1 is a silicone release film.

[0012] Example 2: A double-sided foam tape, comprising: a light-peel release film 1, a weak adhesive film 2, and a plurality of foam units 3 located between the light-peel release film 1 and the weak adhesive film 2. The plurality of foam units 3 are arranged at intervals on the light-peel release film 1. The foam units 3 are composed of a heavy-peel release film 31 and a foam body layer 32 covering the edge of the lower surface of the heavy-peel release film 31. The central area of ​​the foam body layer 32 is a hollow area 4. The upper and lower surfaces of the foam body layer 32 are coated with an adhesive layer 7. The weak adhesive film 2 is composed of a soft substrate layer 21 and a weak adhesive layer 22. The weak adhesive layer 22 is applied to the surface of the soft substrate layer 21 in contact with the foam unit 3. The heavy peeling release film 31 is bonded to the light peeling release film 1 through the foam body layer 32. The soft substrate layer 21 is bonded to the upper surface of the heavy peeling release film 31 through the weak adhesive layer 22. The re-peelable release film 31 has a pull-out portion 5 at one end. The connection between the pull-out portion 5 and the re-peelable release film 31 is marked with a score line 6. The pull-out portion 5 is folded outward along the score line 6 and is located between the re-peelable release film 31 and the weak adhesive membrane 2. The heavy peeling release film 31 of the foam unit 3 is a PET release film containing silicone oil, and the soft substrate layer 21 of the weak adhesive film 2 is a PE substrate layer.

[0013] The foam unit 3 is rectangular in shape.

[0014] The light peeling release film 1 is a non-silicone release film.

[0015] When using the above-mentioned foam double-sided tape, it not only avoids the problem that the foam monomers are small, resulting in a large number of foam monomers being difficult to store and transfer, but also avoids the problem that the foam monomers are easy to fall off during transfer or use, thereby facilitating transfer and use; in addition, the heavy-peel release film has a pull ear at one end, and the connection between the pull ear and the heavy-peel release film has a score line. The pull ear is folded outward along the score line and is located between the heavy-peel release film and the weak adhesive membrane, preventing the pull ear from warping up on the light-peel release film and avoiding falling off, and also making it convenient for users to take and place foam monomers, thereby improving work efficiency.

[0016] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A double-sided foam tape, characterized in that: include: A light peeling release film (1), a weak adhesive film (2) and a plurality of foam units (3) located between the light peeling release film (1) and the weak adhesive film (2), wherein the plurality of foam units (3) are arranged at intervals on the light peeling release film (1), and the foam units (3) are composed of a heavy peeling release film (31) and a foam body layer (32) covering the edge of the lower surface of the heavy peeling release film (31), wherein the central area of ​​the foam body layer (32) is a hollow area (4), and the upper surface and the lower surface of the foam body layer (32) are both coated with an adhesive layer (7); The weak adhesive film (2) is composed of a soft substrate layer (21) and a weak adhesive layer (22), the weak adhesive layer (22) being coated on the surface of the soft substrate layer (21) in contact with the foam monomer (3), the heavy peeling release film (31) and the light peeling release film (1) being bonded via the foam body layer (32), and the soft substrate layer (21) and the upper surface of the heavy peeling release film (31) being bonded via the weak adhesive layer (22); One end of the re-peelable release film (31) has a pull ear portion (5), and the connection between the pull ear portion (5) and the re-peelable release film (31) has a score line (6), and the pull ear portion (5) is folded outward along the score line (6) and is located between the re-peelable release film (31) and the weak adhesive membrane (2); The heavy peeling release film (31) of the foam monomer (3) is a PET release film containing silicone oil, and the soft substrate layer (21) of the weak adhesive film (2) is a PE substrate layer.

2. The double-sided foam tape according to claim 1, characterized in that: The foam unit (3) is rectangular in shape.

3. The double-sided foam tape according to claim 1, wherein: The light peeling release film (1) is a silicone release film or a non-silicone release film.

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