Ultrathin anti-static metal composite film shading adhesive tape

Abstract

The utility model relates to the technical field of shading adhesive tapes, in particular to an ultrathin anti-static metal composite film shading adhesive tape which comprises a base material layer, the base material layer comprises a PET (polyethylene terephthalate) film and a grid net which is made of metal and is completely embedded in the PET film, the duty ratio of the metal in the grid net is 50-90%, a shading layer is arranged on the upper surface of the base material layer, and the shading layer is arranged on the lower surface of the base material layer. And an adhesive layer and release paper are arranged on the lower surface of the base material layer. While maintaining excellent shading performance, the electromagnetic shielding and anti-static properties are excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of light-shielding tapes, in particular to an ultra-thin anti-static metal composite film light-shielding tape. Background Art

[0002] At present, in the manufacturing and assembly process of electronic devices, light-shielding tapes play a crucial role. It not only needs to have good light-shielding performance, but also needs to have characteristics such as electromagnetic shielding and anti-static properties to meet the high requirements of modern electronic devices for fineness and performance. The existing Chinese Patent No. 202020625297.1 discloses a highly plastic light-shielding tape made of a composite metal film as a black base material, including a composite metal film layer, a light-shielding layer adhesively provided on one side of the composite metal film layer, a reflective layer adhesively provided on the other side of the composite metal film layer, an anti-static layer and a release layer adhesively provided in sequence on the side of the reflective layer away from the composite metal film layer, and a black ink layer is coated between the release layer and the anti-static layer. By setting a light-shielding layer, a reflective layer and a black ink layer structure on both sides of the composite metal film layer respectively, it improves the light-shielding performance of the tape, and at the same time, with the addition of the anti-static layer, it has a certain anti-static ability, wide application range and practical performance. However, when in use, due to its laminated structure, it is easy for each layer to fall off, especially between the composite metal film layer and the light-shielding layer and the reflective layer, resulting in insufficient stability of the light-shielding tape during use. In addition, when the environment is harsh, it is also easy to corrode the composite metal film layer, thus affecting its electromagnetic shielding and anti-static effects. Summary of the Utility Model

[0003] Therefore, in view of the above problems, the utility model proposes an ultra-thin anti-static metal composite film light-shielding tape, which not only maintains excellent light-shielding performance, but also has excellent electromagnetic shielding and anti-static capabilities.

[0004] To achieve the above object, the utility model adopts the following technical solutions: an ultra-thin anti-static metal composite film light-shielding tape, including a base material layer, the base material layer includes a PET film and a grid network made of metal and completely embedded in the PET film, the metal duty ratio in the grid network is between 50-90%, a light-shielding layer is provided on the upper surface of the base material layer, and an adhesive layer and a release paper are provided on the lower surface of the base material layer.

[0005] Further improvement, the distance between the lower surface of the grid network and the lower surface of the PET film is 10-100 μm, and the distance between the upper surface of the grid network and the upper surface of the PET film is 0.2-20 μm.

[0006] Further improvement, the thickness of the grid network is 0.2-20 μm.

[0007] Further improvement, the adhesive layer is a black acrylic adhesive.

[0008] Further improvement: the thickness of the adhesive layer is 5 - 20 μm.

[0009] Further improvement: the light-shielding layer is a matte ink layer.

[0010] Further improvement: the thickness of the light-shielding layer is 4 - 10 μm.

[0011] By adopting the foregoing technical solutions, the beneficial effects of the present utility model are as follows:

[0012] In the present utility model, through the design of embedding a grid made of metal into the PET film, the grid is integrated with the PET, and the PET film can completely protect the grid, avoiding the problems that the grid fails and falls off due to the decrease in adhesion or fails due to corrosion, so that the tape still maintains stable performance during long-term use. At the same time, since the metal duty cycle in the grid is between 50 - 90%, such a design not only ensures good electromagnetic shielding and anti-static performance of the tape, but also significantly reduces costs and improves the cost performance of the product; in addition, the spacing design between the metal grid and the PET film ensures both the structural stability and flexibility of the tape, making it suitable for more complex pasting environments; further, using black acrylic adhesive as the adhesive layer not only enhances the adhesion of the tape, but also provides an additional light-shielding effect, further improving the light-shielding performance of the tape. The matte ink layer as the light-shielding layer can effectively block light and avoid the glare problem caused by reflected light, thus providing a better visual effect and user experience. Description of the Drawings

[0013] Figure 1 is a schematic structural view of the present utility model;

[0014] Figure 2 is a schematic structural view of the base material layer of the present utility model.

[0015] Icon:

[0016] 1. Base material layer; 11. PET film; 12. Grid; 2. Light-shielding layer; 3. Adhesive layer; 4. Release paper. Specific Embodiments

[0017] Now, the present utility model will be further described in conjunction with the drawings and specific embodiments.

[0018] Reference Figure 1 、 2 , this embodiment provides an ultra-thin anti-static metal composite film light-shielding tape, including a base material layer 1, a light-shielding layer 2 is provided on the upper surface of the base material layer 1, and an adhesive layer 3 and a release paper 4 are provided on the lower surface of the base material layer 1.

[0019] Among them, the substrate layer 1 includes a PET film 11 and a grid network 12 completely embedded in the PET film 11. The grid network 12 is made of a metal material with high conductivity and good electromagnetic shielding effect, such as one or several of nickel, copper, silver, gold, etc. The metal duty ratio in the grid network 12 is between 50% and 90%. The distance between the lower surface of the grid network 12 and the lower surface of the PET film 11 is 20 μm, the distance between the upper surface of the grid network 12 and the upper surface of the PET film 11 is 5 μm, and the thickness of the grid network 12 is 5 μm. When the substrate layer 1 is formed, a layer of PET material is first coated on the production substrate, and then the grid network 12 is fabricated on the above PET material by the Lift-Off method. Finally, another layer of PER material is covered, and then the two layers of PER material with the grid network 12 are thermally pressed and fused, and the substrate layer 1 is obtained after peeling off from the substrate.

[0020] Through the design of embedding the grid network 12 made of metal in the PET film 11 in the present utility model, the grid network 12 and the PET are integrated as a whole. The PET film 11 can completely protect the grid network 12, avoiding the problems that the grid network 12 fails to fall off due to the decrease in adhesion or fails due to corrosion, so that the tape still maintains stable performance during long-term use. At the same time, since the metal duty ratio in the grid network 12 is between 50% and 90%, such a design not only ensures good electromagnetic shielding and anti-static performance of the tape, but also significantly reduces the cost and improves the cost performance of the product. In addition, the distance design between the metal grid network 12 and the PET film 11 ensures both the structural stability and flexibility of the tape, making it applicable to more complex pasting environments, thus providing a better visual effect and user experience.

[0021] In this embodiment, the light-shielding layer 2 is a matte ink layer with a thickness of 6 μm, and the adhesive layer 3 is a black acrylic adhesive with a thickness of 10 μm. The setting of the black acrylic adhesive not only enhances the adhesion of the tape, but also provides an additional light-shielding effect, further improving the light-shielding performance of the tape.

[0022] In practical applications, the distance between the lower surface of the grid network 12 and the lower surface of the PET film 11 is preferably between 10 μm and 100 μm, the distance between the upper surface of the grid network 12 and the upper surface of the PET film 11 is preferably between 0.2 μm and 20 μm, the thickness of the grid network 12 is preferably between 0.2 μm and 20 μm, the thickness of the adhesive layer 3 is preferably between 5 μm and 20 μm, and the thickness of the light-shielding layer 2 is preferably between 4 μm and 10 μm.

[0023] In practical applications, in order to protect the light-shielding layer 2, a weather-resistant layer, a scratch-resistant layer, etc. can also be provided on the upper surface of the light-shielding layer 2 according to actual situations, so that it can adapt to a wider range of environments and more stringent usage conditions.

[0024] Although the present utility model is specifically shown and described in connection with preferred embodiments, those skilled in the art should understand that various changes can be made to the present utility model in terms of form and details without departing from the spirit and scope of the present utility model defined by the appended claims, and all such changes are within the protection scope of the present utility model.

Claims

1. An ultra-thin antistatic metal composite film light-shielding tape, comprising a base material layer, characterized in that: The substrate layer includes a PET film and a grid network made of metal and completely embedded in the PET film. The metal duty ratio in the grid network is between 50% and 90%. A light-shielding layer is provided on the upper surface of the substrate layer, and an adhesive layer and a release paper are provided on the lower surface of the substrate layer.

2. The anti-static metal composite film light-shielding tape according to claim 1, wherein: The distance between the lower surface of the grid network and the lower surface of the PET film is 10 - 100 μm, and the distance between the upper surface of the grid network and the upper surface of the PET film is 0.2 - 20 μm.

3. The anti-static metal composite film light-shielding tape according to claim 1, characterized in that: The thickness of the grid network is 0.2 - 20 μm.

4. The light-shielding tape of an ultra-thin antistatic metal composite film according to claim 1, wherein: The adhesive layer is a black acrylic adhesive.

5. The light-shielding tape of an ultra-thin anti-static metal composite film according to claim 1, wherein: The thickness of the adhesive layer is 5 - 20 μm.

6. The anti-static metal composite film light-shielding tape according to claim 1, characterized in that: The light-shielding layer is a matte ink layer.

7. An ultra-thin antistatic metal composite film light-shielding tape according to claim 1, characterized in that: The thickness of the light-shielding layer is 4 - 10 μm.

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