Colored plastic mobile phone rear cover manufacturing process

Abstract

The invention discloses a colored plastic mobile phone rear cover manufacturing process, which is characterized in that compared with the prior art, a colored plastic mobile phone rear cover (6) produced by the colored plastic mobile phone rear cover manufacturing process is provided with a hole site (7) for mounting a camera, and four corners and four sides of the colored plastic mobile phone rear cover (6) are provided with fixedly connected reinforcing ribs (8); the reinforcing ribs (8) and the colored plastic mobile phone rear cover (6) are seamlessly and fixedly connected or integrally formed, the colored plastic mobile phone rear cover (6) sequentially comprises a shading layer (5), a reflecting layer (4), a shell layer (1), a texture layer (2) and a functional coating (3), and according to actual requirements, L * a * b * values of the colored plastic mobile phone rear cover (6) comprise a * and b * values of the shell layer (1) and L * values of the reflecting layer (4). A series of problems existing in the colored plastic mobile phone rear cover manufactured by the mobile phone shell rear cover manufacturing process are solved.

Description

technical field [0001] The invention relates to the field of manufacturing the back cover of colored plastic mobile phones, in particular to a manufacturing process of the back cover of colored plastic mobile phones. Background technique [0002] In the process of making the back cover of colored plastic mobile phones, the color difference formula of the color difference meter is commonly used in the industry: CIE L*a*b* color space, L*,*a,b* is the chromaticity value representing the color of the object , that is, the color space coordinates of the color, any color has a unique coordinate value; where L* represents light and shade (black and white), *a represents red and green, and b* represents yellow and blue; it is a modern color difference assessment according to the International Lighting Association. The standard color difference formula recommended by (CIE) and calculated by instruments and computers can be expressed by precise numbers. [0003] The color L*, a*, b*...

AI Technical Summary

Problems solved by technology

This will bring the following problems: (1) The more color layers of the coating layer, the more dispersed the color difference of the coating layer, which will lead to lower yield

(2) Because the coating layer needs to use high refractive index materials, but its thickness is generally only between 5-100nm, a slight change in its thickness will cause a large color difference, because the more coatings, the color levels displayed by the coating layer will result feel bad

(3) When the decorative film is pasted on the inner surface of the 3D plastic shell, the more layers are required, the thicker the coating layer is, and the easier the coating layer is to break in areas with greater stress and strain, resulting in poor appearance

(4) Moreover, the edge of the colored plastic mobile phone back cover is not protected, and it is easy to be lost during installation.

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