CN-116278109-B - Forming method of mobile phone rear cover and mobile phone rear cover

Abstract

The invention relates to the technical field of mobile phone accessory forming, and discloses a mobile phone rear cover forming method and a mobile phone rear cover. The method for forming the mobile phone rear cover comprises the steps of carrying out surface treatment on a thermoplastic glass fiber plate, sequentially carrying out silk screen printing patterns, optical coating and transparent photo-curing glue transfer on the thermoplastic glass fiber plate after the surface treatment to obtain a mobile phone rear cover embryonic form, coating a plain skin on the mobile phone rear cover embryonic form, carrying out photo-curing, then adhering a protective film and a cutting film to obtain a mobile phone rear cover base material, cutting the mobile phone rear cover base material into a preset shape, and carrying out hot bending forming on the mobile phone rear cover base material cut into the preset shape to obtain the mobile phone rear cover. The thermoplastic glass fiber board is used as a base material, has good thermoplastic capability and toughness, can be cut and hot-bent uniformly after being covered with plain leather, reduces waste of production materials, improves production efficiency and yield, and enables the rear cover of the mobile phone to be light and thin, and the use experience of a user is improved.

Inventors

• XU YUNGANG
• LI QINGHUA
• ZHANG CHUNXIANG

Assignees

• 东莞升益科技有限公司

Dates

Publication Date

20260512

Application Date

20230322

Claims (8)

1. 1. The method for forming the mobile phone rear cover is characterized by comprising the following steps: carrying out surface treatment on the thermoplastic glass fiber board to ensure that the dyne value of the surface of the thermoplastic glass fiber board is not lower than 38; Sequentially performing silk-screen pattern printing, optical coating and transparent photo-curing glue transfer printing on the surface-treated thermoplastic glass fiber plate to obtain a rudiment of the rear cover of the mobile phone; covering a blank of a rear cover of the mobile phone with a plain skin, and performing photo-curing, wherein the energy of the photo-curing is 1000mj-1500mj, and the time is 5 seconds-10 seconds; After a protective film and a cutting film are attached to the surface of the solidified plain skin, a mobile phone rear cover base material is obtained; cutting the mobile phone rear cover base material into a preset shape, and performing hot bending forming on the mobile phone rear cover base material cut into the preset shape to obtain the mobile phone rear cover.
2. 2. The method for molding a back cover for a mobile phone according to claim 1, wherein the glass fiber plate is impregnated to obtain a thermoplastic glass fiber plate.
3. 3. The method of molding a back cover for a cellular phone of claim 2, wherein the impregnating solution is a modified thermoplastic epoxy resin.
4. 4. The method for forming a back cover of a mobile phone according to claim 1, wherein the silk-screen layer is formed by silk-screen printing a predetermined pattern with thermoplastic UV ink on a thermoplastic glass fiber plate.
5. 5. The method of claim 4, wherein the thermoplastic UV ink is modified with an epoxy polyacrylate or a polyurethane modified epoxy resin.
6. 6. A mobile phone rear cover, characterized in that the mobile phone rear cover is formed by the forming method of the mobile phone rear cover according to any one of claims 1-5.
7. 7. The method for forming a back cover of a mobile phone according to claim 6, wherein the thickness of the skin is 0.2mm.
8. 8. The method for forming a back cover of a mobile phone according to claim 6, wherein the thickness of the back cover of the mobile phone is 0.6mm.

Description

Forming method of mobile phone rear cover and mobile phone rear cover Technical Field The invention relates to the technical field of mobile phone accessory forming, in particular to a mobile phone rear cover forming method and a mobile phone rear cover. Background The plain leather is a material between the dermis and the leather, has the characteristics of water resistance, durability, softness and the like, and can be applied to the molding of the rear cover of the mobile phone. In the existing molding process of the mobile phone rear cover, firstly, a mobile phone rear cover blank is molded by hot press molding or injection molding of a thermosetting material, then printing and attaching a plain skin on the mobile phone rear cover blank, and finally, cutting off the redundant blank and the plain skin through a numerical control machine tool to ensure that the edge of the mobile phone rear cover is flat. The raw leather is coated on each blank one by one, so that the production efficiency is low, the yield is low and the production materials are wasted, and the raw leather needs to be kept under a certain tension when being coated, so that the thickness of the raw leather is required to reach 0.5-0.6 mm, and the formed mobile phone rear cover is thick and heavy. Therefore, there is a need to provide a method for forming a mobile phone back cover and a mobile phone back cover to solve the above-mentioned problems. Disclosure of Invention Based on the above, an object of the present invention is to provide a method for forming a rear cover of a mobile phone, so as to solve the problems of low production efficiency, low yield, waste of production materials, heavy rear cover of a mobile phone and the like in the process of forming the rear cover of the mobile phone by using plain skin in the prior art. In order to achieve the above purpose, the invention adopts the following technical scheme: A molding method of a mobile phone rear cover comprises the following steps: carrying out surface treatment on the thermoplastic glass fiber board; Sequentially performing silk-screen pattern printing, optical coating and transparent photo-curing glue transfer printing on the surface-treated thermoplastic glass fiber plate to obtain a rudiment of the rear cover of the mobile phone; covering a plain skin on the rear cover embryonic form of the mobile phone, performing photo-curing, and then attaching a protective film and a cutting film to obtain a base material of the rear cover of the mobile phone; cutting the mobile phone rear cover base material into a preset shape, and performing hot bending forming on the mobile phone rear cover base material cut into the preset shape to obtain the mobile phone rear cover. Further, the glass fiber board is impregnated to obtain a thermoplastic glass fiber board. Further, the impregnating solution is a modified thermoplastic epoxy resin. Further, the thermoplastic glass fiber sheet is subjected to polishing or ultrasonic cleaning surface treatment so that the dyne value of the thermoplastic glass fiber sheet surface is not lower than 38. Further, the photo-curing energy of the cell phone rear cover embryonic form covered with the plain skin is 1000mj-1500mj for 5 seconds-10 seconds. Further, a preset pattern is silk-screened on the thermoplastic glass fiber board by using thermoplastic UV ink, so as to form a silk-screened layer. Further, the thermoplastic UV ink is modified with an epoxy polyacrylate or polyurethane modified epoxy resin. Based on the above, another objective of the present invention is to provide a mobile phone rear cover, so as to solve the problems of low production efficiency, low yield, waste of production materials, heavy mobile phone rear cover and the like in the process of forming the mobile phone rear cover by using the plain skin in the prior art. In order to achieve the above purpose, the invention adopts the following technical scheme: a mobile phone rear cover is formed by the forming method of the mobile phone rear cover according to any one of the above schemes. Further, the thickness of the skin is 0.2mm. Further, the thickness of the mobile phone rear cover is 0.6mm. The beneficial effects of the invention are as follows: The method for forming the mobile phone rear cover comprises the following steps of carrying out surface treatment on a thermoplastic glass fiber plate, sequentially carrying out silk screen printing patterns, optical coating and transparent photo-curing glue transfer on the thermoplastic glass fiber plate subjected to the surface treatment to obtain a mobile phone rear cover embryonic form, coating a plain skin on the mobile phone rear cover embryonic form, carrying out photo-curing, then adhering a protective film and a cutting film to obtain a mobile phone rear cover base material, cutting the mobile phone rear cover base material into a preset shape, and carrying out hot bending forming on the mobile phone rear cover base mate