Preparation method of external texture mobile phone cover
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A mobile phone cover and texture technology, applied in branch equipment, telephone structure, telephone communication, etc., can solve problems such as internal stress, optical distortion, light transmission of mobile phone back cover, etc., and achieve good anti-aging performance, strong plasticity, and manufacturing process. The effect of fewer steps
Pending Publication Date: 2021-08-20
KUNSHAN SANJING SCI & TECH
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Problems solved by technology
The back cover of glass mobile phone and optical plastic products are mainly realized by glass substrate and film. In the prior art, there are problems such as internal stress, optical distortion, and light transmission on the back cover of the mobile phone.
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[0024] Here are the specific embodiments of the present invention, the technical solutions of the present invention are further described, but the present invention is not limited to these examples.
[0025] A method of preparation of external texture mobile phone covers, including the following steps:
[0026] S1) injection molding: Injection molding in optical grade transparent plastic, injection molding includes the following process: optical grade transparent plastic melting → upper mold → commissioning → Co-molding → compressive molding → cooling → Optical Level transparent plastic is polymethyl methacrylate (PMMA) and / or polycarbonate (PC), polymethyl methacrylate and / or polycarbonate formation of 0.075-0.1 mm; injection of rubber filled The pressure is 80-130 MPa, the injection time is 2-5s, the pressure in which the pressure molding is 40-60 MPa, the time for holding the molded molding is 20-40s; the product thickness made of the injection molding process of this step ...
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Abstract
The invention discloses a preparation method of an external texture mobile phone cover. The preparation method comprises the following steps of molding an injection molded part, carrying out UV embossing treatment on the surface of TPU, carrying out texture pressing on the TPU, transferring the texture to the outer surface of the injection molded part through hardening liquid, attaching the inner surface of the injection molded part subjected to transferring to an explosion-proof film, and carrying out CNC machining on the injection molded part with the explosion-proof film attached. The preparation method is simple in preparation process, a small number of preparation procedures steps are performed, and light transmission of the edges of the periphery of a cover plate, a fingerprint hole, a camera hole and the like is avoided; and the mobile phone cover prepared by adopting the preparation method is high in plasticity, good in impact resistance, low in electromagnetic signal shielding, small in electromagnetic wave loss, high in hardness, relatively good in wear resistance, corrosion resistance, high and low temperature impact resistance and aging resistance, light transmission of the mobile phone rear cover is reduced, and the light texture is enhanced.
Description
Technical field [0001] The present invention relates to the field of mobile phone cover processing, and more particularly to a method of preparation of external texture mobile phone covers. Background technique [0002] Optical plastic products as alternatives to glass products, it has been widely used in various aspects of society, and optical plastic products have high translucent, light, weather resistance, impact, easy to form, low cost, and is gradually replacing glass products. Applicted to optical instruments and electronic industries. [0003] Common plastic products include PC, PMMA, PA, PET and other engineering plastics, have been widely used in mobile phone lenses, glasses lenses, lenses, instrument panels, display, cover and other fields. Glass material mobile phone rear cover and optical plastic products, mainly used in the glass substrate plus film method, prior art in the internal film of the mobile phone cover, internal stress, optical distortion, mobile phone re...
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