Edge covering structure of composite membrane material
By setting adhesive layers and extensions on both sides of the functional layer of the composite film, a edging structure is formed, which solves the problem of chips or powder loss after die cutting, avoids internal short circuits of electronic products, and improves the film material Wear resistance.
Patent Information
- Application Number
- CN202420767988.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The functional layer of the existing composite film material is prone to chip loss or powder loss after die-cutting, resulting in the problem of short circuit inside electronic products.
A composite film material edge-encapsulated structure is designed. By setting an adhesive layer on the upper and lower sides of the functional layer and setting an extension between the adhesive layer, the functional layer is wrapped around it to form a protective layer to avoid chip loss or loss. Powder and an wear-resistant layer is provided on the PET film layer to increase wear resistance.
It effectively avoids chip loss or powder loss of the functional layer after die-cutting, prevents short circuits caused by the adhesion of composite film materials into the product, and improves the stability and wear resistance of the film materials.
Smart Images
Figure CN222348927U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of composite film materials, in particular to an edge wrapping structure of a composite film material. Background Art
[0002] Multilayer composite film materials refer to die-cut materials with functional layers, such as conductive functions, shielding functions, thermal insulation and heat dissipation functions.
[0003] The cross section of the functional layer in the composite film material in the prior art is conductive, and there will be problems of chipping and powdering after die-cutting, and these dusts will cause short circuits inside electronic products. Utility Model Content
[0004] The utility model aims to overcome the shortcomings of the prior art and provide an edge wrapping structure of a composite film material.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A composite film material edging structure comprises: a composite film material body, the composite film material body comprises a functional layer, adhesive layers are arranged on the upper and lower sides of the functional layer, an extension portion is arranged between the adhesive layers on the upper and lower sides of the functional layer to connect, and the extension portion wraps the periphery of the functional layer.
[0007] In one embodiment, the composite film body also includes a PET film layer and a release film layer, the PET film layer is located above the functional layer, the release film layer is located below the functional layer, and the two adhesive layers are respectively located between the functional layer and the PET film layer and the release film layer.
[0008] In one embodiment, the two adhesive layers are respectively a first adhesive layer and a second adhesive layer, and the functional layer is located between the first adhesive layer and the second adhesive layer.
[0009] In one embodiment, the size of the first adhesive layer is the same as the size of the second adhesive layer, and the size of the functional layer is smaller than the size of the first adhesive layer and the size of the second adhesive layer.
[0010] In one embodiment, the outer edge of the functional layer is retracted by 0.5 mm to 1.5 mm relative to the first adhesive layer.
[0011] In one embodiment, the extension portion is arranged at the outer edge of the first adhesive layer relative to the functional layer, the extension portion is formed by extending downward from the area of the first adhesive layer beyond the functional layer, the extension portion is arranged along the outer circumferential direction of the functional layer, the upper end of the extension portion is connected to the first adhesive layer, and the lower end of the extension portion is connected to the surface of the second adhesive layer.
[0012] In one embodiment, the thickness of the extension portion is matched with the thickness of the functional layer, the width of the extension portion is 0.5 mm-1.5 mm, and the extension portion surrounds the periphery of the functional layer with a width of 0.5 mm-1.5 mm.
[0013] In one embodiment, both upper and lower ends of the extension portion are adhesive, and the extension portion is fixed between the first adhesive layer and the second adhesive layer.
[0014] In one embodiment, a protective film is attached to the outer edge of the extension portion away from the functional layer.
[0015] In one embodiment, a wear-resistant layer is provided on the upper surface of the PET film layer.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] The utility model provides a composite film material edge wrapping structure to wrap the periphery of the functional layer by setting an extension portion to prevent the functional layer from falling off after die-cutting, thereby preventing the composite film material body from being attached to the product and causing an internal short circuit in the electronic product. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 The utility model provides a structural schematic diagram of the edge wrapping structure of a composite membrane material.
[0020] Description of the drawings: 10. Composite film body; 11. PET film layer; 12. Functional layer; 13. Release film layer; 20. First adhesive layer; 21. Extension portion; 30. Second adhesive layer; 40. Protective film; 50. Wear-resistant layer. DETAILED DESCRIPTION
[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.
[0022] A composite membrane material edge structure, refer to Figure 1, including a composite film body 10, the composite film body 10 includes a PET film layer 11, a functional layer 12 and a release film layer 13 arranged in sequence, the PET film layer 11 is the base material layer of the composite film body 10, and the release film is used to protect the composite film body 10 before it is attached to the product. An adhesive layer is provided between the functional layer 12 and the PET film layer 11 and the release film layer 13, and the adhesive layer is used to adhere and fix the upper and lower sides of the functional layer 12 to the PET film layer 11 and the release film layer 13 respectively.
[0023] Reference Figure 1 The two adhesive layers are respectively a first adhesive layer 20 and a second adhesive layer 30, and both the first adhesive layer 20 and the second adhesive layer 30 are double-sided adhesive. The size of the first adhesive layer 20 is the same as that of the second adhesive layer 30, and the functional layer 12 is located between the first adhesive layer 20 and the second adhesive layer 30. The size of the functional layer 12 is smaller than that of the first adhesive layer 20 and the second adhesive layer 30, and the outer edge of the functional layer 12 is retracted by 0.5mm-1.5mm relative to the first adhesive layer 20.
[0024] Reference Figure 1 The first adhesive layer 20 is provided with an extension portion 21 relative to the outer edge of the functional layer 12. The extension portion 21 is formed by extending downward from the area where the first adhesive layer 20 exceeds the functional layer 12. The extension portion 21 is arranged along the outer circumferential direction of the functional layer 12. The upper end of the extension portion 21 is connected to the first adhesive layer 20, and the lower end of the extension portion 21 is connected to the surface of the second adhesive layer 30. The extension portion 21 surrounds the outer side of the functional layer 12 to protect the functional layer 12.
[0025] Reference Figure 1 The thickness of the extension portion 21 matches the thickness of the functional layer 12. The cross-sectional width of the extension portion 21 is the same as the length of the first adhesive layer 20 extending beyond the functional layer 12, and the outer edge of the extension portion 21 is flush with the outer edges of the first adhesive layer 20 and the second adhesive layer 30. The width of the extension portion 21 is 0.5 mm-1.5 mm, and the extension portion 21 wraps around the outer circumference of the functional layer 12 with a width of 0.5 mm-1.5 mm.
[0026] Reference Figure 1 The upper and lower ends of the extension portion 21 are both adhesive, so that the extension portion 21 is fixed between the first adhesive layer 20 and the second adhesive layer 30 .
[0027] Reference Figure 1 A protective film 40 is attached to the outer edge of the extension portion 21 away from the functional layer 12 to protect the outer side of the extension portion 21 .
[0028] Reference Figure 1 A wear-resistant layer 50 is disposed on the upper surface of the PET film layer 11 , and the wear-resistant layer 50 is used to increase the wear resistance of the composite film material body 10 .
[0029] Reference Figure 1 By setting the extension part 21, the first adhesive layer 20 and the second adhesive layer 30 cooperate to wrap the periphery of the functional layer 12 to avoid the functional layer 12 from falling off or powdering after die-cutting, thereby preventing the composite film body 10 from being attached to the product and causing an internal short circuit in the electronic product.
[0030] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A composite membrane material edge wrapping structure, characterized in that: include: A composite membrane material body (10), the composite membrane material body (10) comprising a functional layer (12), the upper and lower sides of the functional layer (12) being provided with adhesive layers, the adhesive layers on the upper and lower sides of the functional layer (12) being connected by an extension portion (21), and the extension portion (21) wraps the periphery of the functional layer (12).
2. The edge wrapping structure of a composite film material according to claim 1, characterized in that: The composite film material body (10) further comprises a PET film layer (11) and a release film layer (13), wherein the PET film layer (11) is located above the functional layer (12), and the release film layer (13) is located below the functional layer (12), and the two adhesive layers are respectively located between the functional layer (12) and the PET film layer (11) and the release film layer (13).
3. The edge wrapping structure of a composite film material according to claim 2, characterized in that: The two adhesive layers are respectively a first adhesive layer (20) and a second adhesive layer (30), and the functional layer (12) is located between the first adhesive layer (20) and the second adhesive layer (30).
4. The edge wrapping structure of a composite film material according to claim 3, characterized in that: The size of the first adhesive layer (20) is the same as the size of the second adhesive layer (30), and the size of the functional layer (12) is smaller than the sizes of the first adhesive layer (20) and the second adhesive layer (30).
5. The edge wrapping structure of a composite film material according to claim 4, characterized in that: The outer edge of the functional layer (12) is retracted by 0.5 mm to 1.5 mm relative to the first adhesive layer (20).
6. The edge wrapping structure of a composite film material according to claim 5, characterized in that: The extension portion (21) is arranged at the outer edge of the first adhesive layer (20) relative to the functional layer (12); the extension portion (21) is formed by extending downward from the area where the first adhesive layer (20) exceeds the functional layer (12); the extension portion (21) is arranged along the outer circumferential direction of the functional layer (12); the upper end of the extension portion (21) is connected to the first adhesive layer (20); and the lower end of the extension portion (21) is connected to the surface of the second adhesive layer (30).
7. The edge wrapping structure of a composite film material according to claim 6, characterized in that: The thickness of the extension portion (21) is adapted to the thickness of the functional layer (12), the width of the extension portion (21) is 0.5 mm-1.5 mm, and the extension portion (21) surrounds the periphery of the functional layer (12) with a width of 0.5 mm-1.5 mm.
8. The edge wrapping structure of a composite film material according to claim 7, characterized in that: Both upper and lower ends of the extension part (21) are adhesive, and the extension part (21) is fixed between the first adhesive layer (20) and the second adhesive layer (30).
9. The edge wrapping structure of a composite film material according to claim 8, characterized in that: A protective film (40) is attached to the outer edge of the extension portion (21) away from the functional layer (12).
10. The edge wrapping structure of a composite film material according to claim 2, characterized in that: The upper surface of the PET film layer (11) is provided with a wear-resistant layer (50).