CN216330616U

CN216330616U - Composite board and electronic product shell

Info

Publication number: CN216330616U
Application number: CN202022082530.9U
Authority: CN
Inventors: 王才涛
Original assignee: Wingtech Communication Co Ltd
Current assignee: Wingtech Communication Co Ltd
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2022-04-19
Anticipated expiration: 2030-09-22

Abstract

The utility model discloses a composite board, which comprises a base material layer, a cover bottom layer and a primer layer, wherein the cover bottom layer is arranged on one side of the base material layer; a finish paint layer is sprayed on one side of the primer layer, which is far away from the substrate layer; the surface paint layer is formed by mixing surface paint and fluff powder. According to the composite board provided by the utility model, the primer is sprayed on the substrate layer, so that the adhesive force between the primer and the substrate layer is increased, and then the finish paint mixed with the fluff powder is sprayed on the primer, so that the electronic product shell made of the composite board has hand feeling and is not easy to fall off on the premise of ensuring the performances of dirt resistance, scratch resistance, chemical resistance and the like; in addition, the fluff powder is added into the finish paint, so that a plurality of defects such as scratches, heterochrosis, orange peel, rainbow lines and the like in the production of most electronic product shells can be covered, and the overall production yield is improved.

Description

Composite board and electronic product shell

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of electronic product shells, in particular to a composite board and an electronic product shell made of the composite board.

[ background of the utility model ]

With the popularization and application of electronic products in society, people have higher and higher requirements on the shell materials of the electronic products. For example, the conventional battery cover plate processing technology is as follows: logo printing, UV transfer printing, electroplating, cover bottom printing, high pressure, curtain coating and CNC (computer numerical control) processing, wherein in order to meet the performance requirements of scratch resistance, dirt resistance, cosmetic resistance and the like of the appearance surface, the appearance surface of the plate is generally subjected to curtain coating and hardening treatment. However, the electronic product shell made of the composite board is formed by performing the curtain coating and hardening treatment, the surface is smooth, and the electronic product shell has no hand feeling when touched, so that the electronic product shell is easy to fall off when being held by hands; meanwhile, the appearance surface is transparent, and a plurality of defects such as scratches, heterochrosis, rainbow lines, orange peel, particles, bulges and the like in the processing process are obvious, so that the integral production yield and the integral production cost are influenced.

Accordingly, there is a need for a composite board and an electronic device housing that overcome the above-mentioned drawbacks.

[ Utility model ] content

The utility model aims to provide a composite board and an electronic product shell, and aims to solve the problem that the surface of the existing composite board for an electronic product shell is smooth and transparent, optimize a plurality of defects in the processing process and improve the production yield.

In order to achieve the above object, a first aspect of the present invention provides a composite board, including a substrate layer, a cover bottom layer disposed on one side of the substrate layer, and a primer layer disposed on one side of the substrate layer away from the cover bottom layer; a finish paint layer is sprayed on one side of the primer layer, which is far away from the substrate layer; the finish paint layer is provided with fluff powder particles.

In a preferred embodiment, a middle paint layer for additional ground color is sprayed between the primer layer and the top paint layer.

In a preferred embodiment, the paint comprises a primer layer, a primer layer and a trademark pattern, wherein the primer layer is arranged on the primer layer.

In a preferred embodiment, the substrate layer comprises a PC layer and a PMMA layer, the PC layer is attached to the cover bottom layer, and the PMMA layer is attached to the primer layer.

In a preferred embodiment, the primer layer has a thickness of 8 μm to 12 μm; the thickness of the finishing paint layer is 24-28 μm.

In a preferred embodiment, the thickness of the intermediate paint layer is 8 μm to 12 μm.

A second aspect of the utility model provides an electronic product housing made of the composite board according to any one of the above embodiments.

According to the composite board provided by the utility model, the primer is sprayed on the substrate layer, so that the adhesive force between the primer and the substrate layer is increased, and then the finish paint mixed with the fluff powder is sprayed on the primer, so that the electronic product shell made of the composite board has hand feeling and is not easy to fall off on the premise of ensuring the performances of dirt resistance, scratch resistance, chemical resistance and the like; in addition, the fluff powder is added into the finish paint, so that a plurality of defects such as scratches, heterochrosis, orange peel, rainbow lines and the like in the production of most electronic product shells can be covered, and the overall production yield is improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic cross-sectional view of a composite panel according to the present invention.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantageous effects of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

The present invention provides a composite board 100, which can be used as a processing material to manufacture an electronic product housing by a CNC (numerical control) processing technology.

As shown in fig. 1, the composite board 100 includes a substrate layer 10, a cover bottom layer 20 disposed on one side of the substrate layer 10, and a primer layer 30 disposed on one side of the substrate layer 10 away from the cover bottom layer 20.

Wherein, the bottom cover layer 20 is formed by putting ink on a screen plate with a gap in a traditional screen printing mode, then using a scraper to operate, and printing the ink on the material, thereby realizing the effect of printing the bottom cover. The primer is then sprayed on the side of the substrate layer 10 facing away from the cover bottom layer 20. Therefore, the primer layer 30 is sprayed onto the surface of the substrate layer 10 by a spray gun by pressurizing the primer in a conventional spraying manner, so that the primer adheres to the substrate layer 10, thereby increasing the adhesion with the substrate layer 10. In the present embodiment, the thickness of the primer layer 30 is 8 μm to 12 μm.

Further, the substrate layer 10 includes a PC (polycarbonate) layer (not shown) and a PMMA (polymethyl methacrylate) layer (not shown), the PC layer is attached to the cover bottom layer 20, and the PMMA layer is attached to the primer layer 30. Specifically, the PC layer is as transparent plastic, and the PMMA layer is as organic glass, all has high transparency, is convenient for see through substrate layer 10 with the pattern of lid bottom layer 20 and shows, still has very high insulating nature simultaneously, leads to the short circuit when avoiding being used for processing into electronic product.

In an embodiment of the utility model, the side of the primer layer 30 facing away from the substrate layer 10 is sprayed with a topcoat layer 40. In the present embodiment, the thickness of the topcoat layer 40 is 24 μm to 28 μm. Specifically, the finish paint is pressurized by adopting a traditional spraying mode, and is sprayed to the surface of the primer layer 30 through a spray gun, so that the finish paint is attached to the material, and the performance requirements of dirt resistance, scratch resistance, chemical resistance and the like are met. Wherein, the sprayed finish paint is mixed with elastic fluff powder particles besides transparent finish paint and/or color quality in the traditional material. The fluff powder is powder consisting of elastic polymer microspheres, and is colored or non-colored polyurethane elastic microspheres modified by special silicone resin. Therefore, the elastic fluff powder particles are added, so that the surface of the finish paint sprayed with the elastic fluff powder particles has a suede feeling, the hand feeling is improved when the finish paint is held by hand, the friction is increased, and the effect of being not easy to fall is achieved. In addition, the relatively thick finish paint doped with the fluff powder is sprayed on the appearance surface of the substrate layer 10, so that a large number of defects such as scratches, abnormal colors, orange peels, rainbow patterns and the like in the production of most electronic product shells can be covered, and the overall production yield of the electronic product shells is improved.

Further, the top paint layer 40 is also provided with matte powder particles. Therefore, the addition of the matte powder and the fluff powder increases the roughness of the surface of the composite board 100, so that the electronic product shell made of the composite board 100 has hand feeling when being touched integrally.

Further, a middle paint layer 50 for adding a base color is sprayed between the primer layer 30 and the finish paint layer 40. In the specific operation, the ink is pressurized by a conventional spraying method, and is sprayed onto the surface of the primer layer 30 by a spray gun, so that the ink is attached to the primer layer 30, and a corresponding color effect is added to the primer layer 30 according to specific requirements. Thus, the topcoat layer 40 also serves to protect the color effect of the basecoat layer 50. In this embodiment, the thickness of the intermediate paint layer 50 is 8 μm to 12 μm.

Further, a trademark pattern 60 (e.g., logo) is included, the trademark pattern 60 is printed on the side of the intermediate paint layer 50 away from the primer layer 30, and the colored paint ink is printed on the intermediate paint layer 50 mainly through a conventional silk-screen process and then protected by the topcoat layer 40.

It can be understood that the composite board 100 provided by the utility model meets the performance requirements of scratch resistance, dirt resistance, cosmetics resistance and the like in the traditional electronic product shell material only by adopting the silk-screen printing and paint spraying processes, the traditional steps of transfer printing, film coating and surface curtain coating are omitted, the required processing process is simpler, and the material cost can be effectively reduced.

In a second aspect, the present invention provides an electronic product housing (not shown), which is made of the composite board according to any one of the above embodiments.

In summary, according to the composite board 100 provided by the utility model, the primer is sprayed on the substrate layer 10, so that the adhesive force between the primer and the substrate layer 10 is increased, and then the finish paint mixed with the fluff powder is sprayed on the primer layer 30, so that the electronic product shell made of the composite board 100 has hand feeling and is not easy to fall off on the premise of ensuring the performances of dirt resistance, scratch resistance, chemical resistance and the like; in addition, the fluff powder is added into the finish paint, so that a plurality of defects such as scratches, heterochrosis, orange peel, rainbow lines and the like in the production of most electronic product shells can be covered, and the overall production yield is improved.

The utility model is not limited solely to that described in the specification and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, so that the utility model is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims

1. A composite board is characterized by comprising a base material layer, a cover bottom layer arranged on one side of the base material layer and a primer layer arranged on one side of the base material layer, which is far away from the cover bottom layer; a finish paint layer is sprayed on one side of the primer layer, which is far away from the substrate layer; the finish paint layer is provided with fluff powder particles.

2. The composite panel of claim 1, wherein a midcoat layer for additional ground color is sprayed between the primer layer and the topcoat layer.

3. The composite panel of claim 2, further comprising a logo graphic printed on a side of the midcoat layer facing away from the primer layer.

4. The composite panel of claim 1, wherein the substrate layer comprises a PC layer and a PMMA layer, the PC layer being attached to the cover substrate layer, and the PMMA layer being attached to the primer layer.

5. The composite panel of claim 1, wherein the primer layer has a thickness of 8 μ ι η to 12 μ ι η; the thickness of the finishing paint layer is 24-28 μm.

6. The composite panel according to claim 2, wherein the thickness of the intermediate paint layer is 8 μm to 12 μm.

7. An electronic product housing, characterized in that it is made of a composite board according to any one of claims 1-6.