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Preparation method of concave fit mobile phone cover with texture diaphragm

A mobile phone cover and diaphragm technology, applied in the field of mobile phone covers, can solve the problems of light transmission, internal stress, optical distortion and other problems of the back cover of mobile phones, and achieve the effects of strong plasticity, good anti-aging performance, and low electromagnetic wave loss

Pending Publication Date: 2022-04-12
KUNSHAN SANJING SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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  • Preparation method of concave fit mobile phone cover with texture diaphragm
  • Preparation method of concave fit mobile phone cover with texture diaphragm
  • Preparation method of concave fit mobile phone cover with texture diaphragm

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Embodiment Construction

[0026] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0027] Such as Figures 1 to 3 As shown, a method for preparing a concave-fitted mobile phone cover of a textured diaphragm comprises the following steps:

[0028] S1) Injection molding: Injection molding with optical-grade transparent plastics. Injection molding includes the following process: plastic melting → upper mold → debugging → mold closing → injection filling → pressure-holding molding → cooling → mold opening; optical-grade transparent plastics For polymethyl methacrylate (PMMA) and / or polycarbonate (PC), the thickness of polymethyl methacrylate and / or polycarbonate after molding is 0.075-0.1mm; the injection pressure for injection filling is 80 -130MPa, the injection time is 2-5s, the pressure of the pressu...

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Abstract

The invention discloses a preparation method of a concave fit mobile phone cover with a texture diaphragm. The preparation method comprises the following steps: S1) carrying out concave injection molding on a rear cover by adopting optical-grade transparent plastic; (S2) the surface of the injection molding part is coated with hardening liquid in a curtain coating mode for curing; s3) performing UV embossing treatment, film coating and printing on the surface of the PET explosion-proof film; (S4) the inner surface of the injection molding part subjected to hardening treatment is attached to an explosion-proof film; and (S5) CNC machining is conducted on the injection molding part with the explosion-proof film attached. The manufacturing process is simple, the steps of the manufacturing process are few, and the edges of the periphery of the cover plate, the fingerprint hole, the camera hole and the like are prevented from transmitting light; 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 and relatively good in wear resistance, corrosion resistance, high and low temperature impact resistance and aging resistance, the light transmission of the rear cover of the mobile phone is reduced, the height of a camera and the thickness of the mobile phone are reduced, and the design space is increased; and the visual sense of the mobile phone is enhanced.

Description

technical field [0001] The invention relates to the technical field of mobile phone covers, in particular to a method for preparing a mobile phone cover made of a textured membrane with concave fit. Background technique [0002] As a substitute for glass products, optical plastic products have been widely used in all aspects of society. Optical plastic products have the advantages of high light transmission, light weight, weather resistance, impact resistance, easy molding, and low cost. They are gradually replacing glass products. It is widely used in optical instruments and electronic industries. [0003] Common plastic products include PC, PMMA, PA, PET and other engineering plastics, which have been widely used in mobile phone lenses, eyeglass lenses, lenses, instrument panels, display screens, covers and other fields. Glass mobile phone back covers and optical plastic products are currently mainly realized by glass substrates and film attachment. In the prior art, ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C63/02B29C63/00B29D7/01H04M1/02H04M1/18
Inventor 许一青于华
Owner KUNSHAN SANJING SCI & TECH
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