Optimized surface optical decorative film for glass fiber shell

Abstract

A surface optical decorative film optimized aiming at a glass fiber shell comprises a substrate film material layer, a surface optical decorative film layer, a surface optical decorative film layer, a surface optical decorative film layer, a surface optical decorative film layer, a surface optical decorative film layer and a surface optical decorative film layer which are sequentially laminated and combined, the stripping layer adopts a UV curing type silicone oil coating, and the thickness of the stripping layer is 5-20 microns; the thickness of the optical texture layer is 2-5 microns; the thickness of the ink layer is 8-15 microns; the laminating adhesive layer is an acrylate adhesive layer, and the thickness of the laminating adhesive layer is 5-15 microns; the bonding adhesive layer is used for bonding with a glass fiber shell base material; the decorative film can adapt to surface attachment transfer printing of complex shapes, construction is completed at a time, the yield and the output are greatly improved, the application cost is reduced, meanwhile, the appearance effect expressive force is enriched, and the decorative film is suitable for glass fiber shells of plane and curved surface shapes.

Description

Technical Field

[0001] This utility model relates to the field of decorative film structure technology, specifically a surface optical decorative film optimized for glass fiber shells. Background Technology

[0002] Fiberglass, as a lightweight and high-strength new material, is widely used in electronic product housings. However, due to the limited surface smoothness of the material, the traditional method of applying multiple layers of spray coatings followed by other effects is costly, has a low yield, and produces limited effects. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a surface optical decorative film optimized for glass fiber shells, which can effectively solve the problems mentioned in the background art.

[0004] To solve the above problems, the technical solution adopted by this utility model is: a surface optical decorative film optimized for glass fiber shells, comprising the following sequentially stacked components:

[0005] The substrate film layer is made of PET polyester film with a thickness of 0.1-0.3mm;

[0006] The release layer is a UV-curable silicone oil coating with a thickness of 5-20μm.

[0007] Optical texture layer, with a thickness of 2-5μm;

[0008] The ink layer thickness is 8-15μm;

[0009] The bonding adhesive layer is an acrylic adhesive layer with a thickness of 5-15μm;

[0010] The adhesive layer is used to bond to the fiberglass shell substrate.

[0011] As a further preferred embodiment of this utility model, the adhesive layer is a thermosetting acrylic adhesive layer.

[0012] As a further preferred embodiment of this utility model, the optical texture layer is a prism array structure with a height of 2-5 μm and a spacing of 10-20 μm.

[0013] As a further preferred embodiment of this utility model, the ink layer is made of screen printing ink.

[0014] Compared with the prior art, this utility model provides a surface optical decorative film optimized for glass fiber housings, which has the following beneficial effects:

[0015] Decorative film can be applied and transferred to complex shaped surfaces, completing the application in one step, significantly improving yield and output, reducing application costs while enriching the expressiveness of the appearance, and is suitable for fiberglass shells with flat and curved shapes. Attached Figure Description

[0016] Figure 1 This is a partially enlarged schematic diagram of the structure of this utility model.

[0017] The layers are: 1. Substrate film layer; 2. Release layer; 3. Optical texture layer; 4. Ink layer; 5. Adhesive layer. Detailed Implementation

[0018] If "and / or" or "and / or" appears in the text, it means three parallel options. For example, "A and / or B" includes option A, option B, or option A and B that are satisfied simultaneously.

[0019] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0020] Reference Figure 1 This utility model provides a surface optical decorative film optimized for glass fiber housings, comprising the following sequentially stacked components:

[0021] Substrate film layer 1 is made of PET polyester film with a thickness of 0.1-0.3mm;

[0022] Release layer 2 is a UV-curable silicone oil coating with a thickness of 5-20μm;

[0023] The thickness of optical texture layer 3 is 2-5 μm;

[0024] The thickness of ink layer 4 is 8-15μm;

[0025] Adhesive layer 5 is an acrylic adhesive layer with a thickness of 5-15μm;

[0026] The adhesive layer 5 is used to bond with the fiberglass shell substrate.

[0027] As a further preferred embodiment of this utility model, the adhesive layer 5 is a thermosetting acrylic adhesive layer.

[0028] As a further preferred embodiment of this utility model, the optical texture layer 3 is a prism array structure with a height of 2-5 μm and a spacing of 10-20 μm.

[0029] As a further preferred embodiment of this utility model, the ink layer 4 is made of screen printing ink.

[0030] As a specific embodiment of this utility model: decorative film for mobile phone back covers:

[0031] Substrate film layer 1 uses Toray Industries PET film (thickness 0.2mm, haze <1%).

[0032] Release layer 2, Dow Corning UV9440 silicone oil, coating thickness 15μm, UV energy 500mJ / cm² curing;

[0033] The optical texture layer 3 forms a prism array through nanoimprinting with a prism angle of 60°, which can significantly improve the optical effect of the film, giving the surface a strong reflective or refractive effect, while also improving the decorative properties.

[0034] The ink layer 4 uses screen printing ink, which has high wear resistance. Even after long-term friction and use, the pattern can maintain its clarity and is not easy to peel off or be damaged, ensuring the decorative effect is long-lasting.

[0035] The bonding adhesive layer 5 uses Changxing Chemical thermosetting acrylic adhesive with a coating thickness of 10μm.

[0036] Preparation process: UV silicone oil is first coated and cured on PET substrate to form release layer 2; optical texture layer 3 is formed on the surface of release layer 2 by roll pressing process; ink layer 4 is attached to optical texture layer 3 by gravure printing; finally, adhesive layer 5 is coated and pre-dried at 70°C, and adhesive layer 5 is bonded to the glass fiber shell material of mobile phone by hot pressing equipment.

[0037] Performance testing: After bonding and hot pressing at 120℃ for 30 minutes, the peel strength reached 9.2 N / cm; after 100 cycles of hot and cold shock at -40℃ to 85℃, there was no delamination; the color difference value ΔE < 0.8 (CIE Lab standard light source D65).

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A surface optical decorative film optimized for glass fiber housings, characterized in that, Including those that are stacked and combined in sequence: The substrate film layer (1) is made of PET polyester film with a thickness of 0.1-0.3 mm; The release layer (2) is a UV-curable silicone oil coating with a thickness of 5-20 μm; The thickness of the optical texture layer (3) is 2-5 μm; The ink layer (4) has a thickness of 8-15 μm; The bonding adhesive layer (5) is an acrylic adhesive layer with a thickness of 5-15μm; The adhesive layer (5) is used to bond with the fiberglass shell substrate.

2. The surface optical decorative film optimized for glass fiber housings according to claim 1, characterized in that, The adhesive layer (5) is a thermosetting acrylic adhesive layer.

3. The surface optical decorative film optimized for glass fiber housings according to claim 1, characterized in that, The optical texture layer (3) is a prism array structure with a height of 2-5 μm and a spacing of 10-20 μm.

4. The surface optical decorative film optimized for glass fiber housings according to claim 1, characterized in that, The ink layer (4) uses screen printing ink.

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