Manufacturing process of 3D integrally-formed mobile phone shell after 2D decoration and mobile phone shell

Abstract

The invention relates to the technical field of composite forming, in particular to a manufacturing process of a 3D integrally-formed mobile phone shell after 2D decoration and the mobile phone shell, and the manufacturing process comprises the following steps: taking glass fabric, and dip-coating a thermoplastic material on one surface of the glass fabric by using an infiltration method to form a decoration layer; fixing a thermosetting material on the other surface of the glass fabric by using a coating method to form a thermosetting layer; the glass fiber cloth and the at least three layers of glass fiber curing sheets are sequentially stacked from top to bottom, and the thermosetting layer makes contact with the uppermost layer of glass fiber curing sheet; and the glass fabric and the at least three layers of glass fiber cured sheets are integrally formed through a hot pressing process. According to the process provided by the invention, 2D decoration of the decoration layer and the thermosetting layer is sequentially carried out on the glass fabric, and then the glass fabric and the at least three glass fiber layers are integrally formed, so that the manufacturing process of a product is simplified, the yield of the product manufactured by the process is effectively improved, and the manufacturing cost of the process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of composite molding, and in particular to a manufacturing process for a mobile phone shell with 2D decoration followed by 3D integrated molding and a mobile phone shell. Background Art

[0002] Glass fiber is an inorganic non-metallic material with excellent performance and a wide variety of types. Its advantages are good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. Glass fiber is usually used as a reinforcing material in composite materials. Nowadays, when preparing mobile phone cases, they are generally 3D molded and then 3D decorated by silk screen printing, transfer printing or coating. However, the structure of the original product will be destroyed due to temperature and other factors during the 3D decoration process, resulting in low product yield, high cost, and low production efficiency. In addition, the actual production process will be more complicated, and the performance of existing mobile phone cases is poor and cannot meet our needs. Summary of the invention

[0003] In order to solve the technical problems existing in the manufacturing process of the existing mobile phone cover, the present invention provides a mobile phone shell manufacturing process and a mobile phone shell that is 3D integrally formed after 2D decoration.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a manufacturing process of a mobile phone case with 2D decoration followed by 3D integral molding, comprising the following steps:

[0005] Step S1: Take a glass fiber cloth and dip-coat a thermoplastic material on one side of the glass fiber cloth by an impregnation method to form a decorative layer;

[0006] Step S2: fixing the thermosetting material on the other side of the glass fiber cloth by coating to form a thermosetting layer;

[0007] Step S3: stacking the glass fiber cloth and at least three layers of glass fiber solidified sheets from top to bottom in sequence, with the thermosetting layer contacting the topmost glass fiber solidified sheet;

[0008] Step S4: forming the glass fiber cloth and at least three layers of glass fiber solidified sheets into one piece by a hot pressing process.

[0009] Preferably, in the step S1, the dipping temperature is 80-100°C.

[0010] Preferably, in step S1, the thermoplastic material includes PC and direct-linked epoxy resin.

[0011] Preferably, the content of the direct-linked epoxy resin is 35-50%.

[0012] Preferably, in the step S2, the coating temperature is 120-140°C.

[0013] Preferably, in step S2, the thermosetting material includes polyurethane and epoxy resin.

[0014] Preferably, the epoxy resin content is 35-50%.

[0015] Preferably, in step S4, the hot pressing time is 10 to 15 minutes, and the hot pressing temperature is 100 to 120°C.

[0016] The present invention also provides a mobile phone case, which is made by the process method described above, and the mobile phone case includes a decorative layer, a glass fiber cloth, a thermosetting layer and at least three glass fiber layers stacked in sequence, the decorative layer is a mixture of PC and direct-linked epoxy resin, and the thermosetting layer is a mixture of polyurethane and epoxy resin.

[0017] Preferably, the glass fiber layer has four layers.

[0018] By implementing the above technical scheme, the following technical effects are achieved: the present invention provides a 2D decorated followed by 3D one-piece molding mobile phone case manufacturing process, which enables the glass fiber cloth to be first subjected to 2D decoration of the decorative layer and the thermosetting layer in sequence, and then to be integrally molded with at least three glass fiber layers, thereby simplifying the product manufacturing process, effectively improving the yield rate of the product manufactured by the process, and reducing the cost of the process manufacturing. The process can be applied to the production of mobile phone cases, thus solving the existing technical problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a process for manufacturing a mobile phone case with 2D decoration followed by 3D integral molding provided by the first embodiment of the present invention;

[0020] Figure 2 An enlarged cross-sectional view of a mobile phone case provided in accordance with a second embodiment of the present invention;

[0021] Description of the accompanying drawings:

[0022] 1. Decorative layer; 2. Fiberglass cloth; 3. Thermosetting layer; 4. Fiberglass layer. DETAILED DESCRIPTION

[0023] In order to better understand the technical solution of the present invention, the embodiments provided by the present invention are described in detail below with reference to the accompanying drawings.

[0024] See also Figure 1 The first embodiment of the present invention provides a manufacturing process for a mobile phone case with 2D decoration followed by 3D integral molding, comprising the following steps:

[0025] Step S1: Take a glass fiber cloth and dip-coat a thermoplastic material on one side of the glass fiber cloth by an impregnation method to form a decorative layer;

[0026] Step S2: fixing the thermosetting material on the other side of the glass fiber cloth by coating to form a thermosetting layer;

[0027] Step S3: stacking the glass fiber cloth and at least three layers of glass fiber solidified sheets from top to bottom in sequence, with the thermosetting layer contacting the topmost glass fiber solidified sheet;

[0028] Step S4: forming the glass fiber cloth and at least three layers of glass fiber solidified sheets into one piece by a hot pressing process.

[0029] Specifically, by first processing the glass fiber cloth in sequence to form a decorative layer and a thermosetting layer and then hot-pressing it with PU, the product manufacturing process is simplified. Furthermore, by avoiding the problems of material damage, high cost and low yield caused by the prior art of first molding and then decoration, the yield of the product manufactured by the process is effectively improved and the cost of the process is reduced.

[0030] On the basis of the above first embodiments, in other embodiments, further, the dipping temperature is 80-100°C.

[0031] Based on the above first embodiments, in other embodiments, further, the thermoplastic material includes PC and direct-linked epoxy resin.

[0032] Based on the above first embodiments, in other embodiments, further, the content of the direct-linked epoxy resin is 35-50%.

[0033] Based on the above first embodiments, in other embodiments, further, the coating temperature is 120-140°C.

[0034] Based on the above first embodiments, in other embodiments, further, the thermosetting material includes polyurethane and epoxy resin.

[0035] Based on the above first embodiments, in other embodiments, further, the epoxy resin content is 35-50%.

[0036] On the basis of the above-mentioned first embodiments, in other embodiments, further, the hot pressing molding time is 10 to 15 minutes, the hot pressing temperature is 100 to 120°C, followed by cooling and shaping, and after cooling, further processing into different products is performed according to needs.

[0037] The present invention also provides a mobile phone case, which is made by the process of integrally molding glass fiber and polyurethane in the above-mentioned first embodiment. The mobile phone case includes a decorative layer 1, a glass fiber cloth 2, a thermosetting layer 3 and at least three glass fiber layers 4 formed in sequence, the decorative layer is a mixture of PC and direct-linked epoxy resin, and the thermosetting layer is a mixture of polyurethane and epoxy resin.

[0038] Based on the above second embodiment, in other embodiments, further, the glass fiber layer has four layers, which improves the hardness of the product and enhances its drop resistance.

[0039] The above is a detailed introduction to a manufacturing process for a mobile phone case with 2D decoration and 3D one-piece molding and a mobile phone case provided in an embodiment of the present invention. For a person skilled in the art, according to the idea of ​​the embodiment of the present invention, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A manufacturing process for a mobile phone case with 2D decoration followed by 3D integrated molding, characterized in that: The steps include: Step S1: Take a glass fiber cloth and dip-coat a thermoplastic material on one side of the glass fiber cloth by an impregnation method to form a decorative layer; Step S2: fixing the thermosetting material on the other side of the glass fiber cloth by coating to form a thermosetting layer; Step S3: stacking the glass fiber cloth and at least three layers of glass fiber solidified sheets from top to bottom in sequence, with the thermosetting layer contacting the topmost glass fiber solidified sheet; Step S4: forming the glass fiber cloth and at least three layers of glass fiber solidified sheets into one piece by a hot pressing process.

2. The manufacturing process of a mobile phone case with 2D decoration followed by 3D integrated molding according to claim 1, characterized in that: In the step S1, the dipping temperature is 80-100°C.

3. The manufacturing process of a mobile phone case with 2D decoration followed by 3D integrated molding according to claim 1, characterized in that: In the step S1, the thermoplastic material includes PC and direct-linked epoxy resin.

4. The manufacturing process of a mobile phone case with 2D decoration followed by 3D integrated molding according to claim 3, characterized in that: The content of the direct-linked epoxy resin is 35-50%.

5. The manufacturing process of a mobile phone case with 2D decoration followed by 3D integrated molding according to claim 1, characterized in that: In the step S2, the coating temperature is 120-140°C.

6. The manufacturing process of a mobile phone case with 2D decoration followed by 3D integrated molding according to claim 1, characterized in that: In the step S2, the thermosetting material includes polyurethane and epoxy resin.

7. The manufacturing process of a mobile phone case with 2D decoration followed by 3D integrated molding according to claim 6, characterized in that: The content of the epoxy resin is 35-50%.

8. The manufacturing process of a mobile phone case with 2D decoration followed by 3D integrated molding according to claim 1, characterized in that: In the step S4, the hot pressing time is 10 to 15 minutes, and the hot pressing temperature is 100 to 120°C.

9. A mobile phone case, characterized in that: The mobile phone case is made by the manufacturing process of 2D decoration followed by 3D one-piece molding as described in any one of claims 1-8, wherein the mobile phone case comprises a decorative layer, a glass fiber cloth, a thermosetting layer and at least three glass fiber layers stacked in sequence, the decorative layer is a mixture of PC and direct-linked epoxy resin, and the thermosetting layer is a mixture of polyurethane and epoxy resin.

10. The mobile phone case according to claim 9, characterized in that: The glass fiber layer has four layers.

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