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CN-224210732-U - Special 3C epoxy glass fiber composite board of anti-bow veneer

CN224210732UCN 224210732 UCN224210732 UCN 224210732UCN-224210732-U

Abstract

The application discloses a special 3C epoxy glass fiber composite board for anti-bow veneer, which belongs to the technical field of 3C epoxy glass fiber composite boards and comprises a 3C epoxy glass fiber composite board body and a veneer, wherein the 3C epoxy glass fiber composite board body is formed by laminating five prepregs, the prepregs comprise a first layer, a second layer, a third layer, a fourth layer and a fifth layer, the prepregs are arranged from top to bottom, and the veneer is positioned at the top of the first layer of the prepregs; the utility model relates to a novel in design, the device is ingenious, constitute by five prepregs through the fine composite sheet body of 3C epoxy glass, the asymmetric design of thickness of two-layer prepreg about the fine composite sheet body of 3C epoxy glass, be the first layer in it, be the fifth layer down, make the bow curve with the fine composite sheet body of 3C epoxy glass, the cell-phone leather veneer is at the fine composite sheet body of 3C epoxy glass anti-bow face, after the leather laminating bonding shaping, the back-pulling force of leather shrink then can be with the fine composite sheet body of 3C epoxy glass level, the practicality of device has been promoted greatly.

Inventors

  • ZHANG HAIYAN
  • CHEN GANG
  • XU ZHANGHAO
  • Ding Yuefen
  • DU WEIBIAO

Assignees

  • 浙江元集新材料有限公司

Dates

Publication Date
20260508
Application Date
20250606

Claims (6)

  1. 1. The utility model provides a special 3C epoxy glass fiber composite sheet of anti-bow veneer, includes 3C epoxy glass fiber composite sheet body (1) and cladding (12), its characterized in that, 3C epoxy glass fiber composite sheet body (1) comprises five prepregs (11) pressfitting, and prepreg (11) include first layer (111), second layer (112), third layer (113), fourth layer (114) and fifth layer (115), arrange from top to bottom, cladding (12) are located first layer (111) top of prepreg (11).
  2. 2. The special 3C epoxy glass fiber composite board for anti-bow taping according to claim 1, wherein the thicknesses of the first layer (111) and the fifth layer (115) are designed asymmetrically, wherein the thickness of the first layer (111) is 0.11mm, and the thickness of the fifth layer (115) is 0.15mm.
  3. 3. The special 3C epoxy glass fiber composite board for anti-bow taping according to claim 1, wherein the thickness of the second layer (112), the third layer (113) and the fourth layer (114) is 0.13mm.
  4. 4. The 3C epoxy glass fiber composite board special for anti-bow taping according to claim 1, wherein the 3C epoxy glass fiber composite board body (1) is subjected to hot press molding to bow towards a surface with the thickness of 0.15mm, and the bow degree is controlled to be 0.5-1.5mm.
  5. 5. The 3C epoxy glass fiber composite board special for the anti-bow veneer according to claim 1, wherein the 3C epoxy glass fiber composite board body (1) is manufactured into a bow shape and is integrally pressed and formed.
  6. 6. The special 3C epoxy glass fiber composite board for the anti-bow veneer according to claim 1, wherein the veneer (12) veneer is adhered with the first layer (111) of the prepreg (11) on the anti-bow surface of the 3C epoxy glass fiber composite board body (1).

Description

Special 3C epoxy glass fiber composite board of anti-bow veneer Technical Field The application relates to the technical field of 3C epoxy glass fiber composite boards, in particular to a special 3C epoxy glass fiber composite board for anti-bow taping. Background The mobile electronic products such as mobile phones are required to be light and thin, and the material of the mobile phone rear cover is changed from materials such as composite boards, glass and metal into epoxy glass fiber materials, so that the epoxy glass fiber materials have the advantages of light weight, high strength, thin thickness and the like. At present, the back cover of the mobile phone adopts two technical processes of epoxy glass fiber materials, one is formed by compression molding an epoxy glass fiber prepreg, and the other is a simpler process of directly pasting an upper leather material by using an epoxy glass fiber composite board, wherein the required colors and patterns are printed and sprayed. In the second skin pasting technology, the gluing agent on the skin material and the glass fiber composite board are pasted at 150-170 ℃ for 30-60 seconds in hot pressing solidification time, the skin material can be expanded in a high-temperature process, and when the skin material is bonded and cooled, the skin material can shrink, so that a product is bent towards one surface of the skin material, the flatness of the product is poor, and the installation efficiency is low. Therefore, the application provides the special 3C epoxy glass fiber composite board for the anti-bow veneer. Disclosure of utility model The 3C epoxy glass fiber composite board special for the anti-bow veneer is provided to solve the problems in the background technology, the 3C epoxy glass fiber composite board body consists of five prepregs, the thicknesses of the upper and lower prepregs of the 3C epoxy glass fiber composite board body are asymmetrically designed, wherein the upper layer is the first layer, the lower layer is the fifth layer, the 3C epoxy glass fiber composite board body is made into bow curve, the veneer is adhered to the anti-bow surface of the 3C epoxy glass fiber composite board body, and after the veneer is adhered and molded, the anti-pulling force of the veneer shrinkage can level the 3C epoxy glass fiber composite board body, so that the practicability of the device is greatly improved. In order to achieve the above purpose, the present application adopts the following technical scheme: The utility model provides a special 3C epoxy glass fiber composite sheet of anti-bow veneer, includes 3C epoxy glass fiber composite sheet body and cladding, 3C epoxy glass fiber composite sheet body comprises five prepregs pressfitting, and the prepreg includes first layer, second floor, third layer, fourth layer and fifth layer, from top to bottom arranges, cladding is located the first layer top of prepreg. As a preferred embodiment, the first and fifth layers have an asymmetric design, wherein the first layer has a thickness of 0.11mm and the fifth layer has a thickness of 0.15mm; the thickness of the upper PP sheet is 0.11mm, the thickness of the lower PP sheet is 0.15mm, the upper PP sheet is bent towards the surface with the thickness of 0.15mm after hot press forming, the bending degree is controlled to be 0.5-1.5mm, the veneer is adhered on the reverse bending surface, and the bent sheet is pulled to be flat through shrinkage of the veneer and the pulling force of the asymmetric structure, so that the practicability of the device is improved. As a preferred embodiment, the thickness of the second layer, the third layer and the fourth layer is 0.13mm; Five semi-cured PP (polypropylene) sheets with the thickness of 0.65mm are pressed together, the thickness of the middle three layers is 0.13mm, the thickness of the first layer is 0.11mm, the thickness of the fifth layer is 0.15mm, the thickness of the sheet is 0.15mm towards the bow after hot press molding, the bow degree is controlled to be 0.5-1.5mm, the veneer is adhered on the reverse bow curved surface, the bow sheet is pulled to be smooth through the shrinkage of the leather and the tension of the asymmetric structure, and the flatness of the whole product is very good, so that the practicability of the device is improved. As a preferable implementation mode, the 3C epoxy glass fiber composite board body is subjected to hot press molding to form a bow with the thickness being 0.15mm, and the bow degree is controlled to be 0.5-1.5mm; After the plate is hot-pressed and formed, the bow is thicker than the plate by 0.15mm, the bow degree is controlled to be 0.5-1.5mm, the veneer is adhered on the reverse bow curved surface, the plate of the bow is leveled by the shrinkage of the veneer and the tension of the asymmetric structure, and the whole product has very good flatness, so that the practicability of the device is improved. As a preferable implementation mode, the 3C epoxy glass fiber