Shielding case and preparation method thereof

A technology of shielding cover and supporting layer

Inactive Publication Date: 2013-05-15
DALIAN SHENGFENG ADHESIVE PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the mold and the cost of mold maintenance are also high
Especially for products with small product quantity requirements, the cost sharing of molds alone is very high
However, during the use of the existing shielding cover, the legs of the shielding cover product are generally welded to the outside of the parts to be protected, such as the PCB board, by a metal welding process. The process is complicated and the assembly cost is high.
[0004] Therefore, there is an urgent need for a new product and technology to replace the existing shield to overcome the problems of high raw material cost, high mold cost, and difficult assembly.

Method used

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  • Shielding case and preparation method thereof
  • Shielding case and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Prepare aluminum foil, polycarbonate plastic composite shield:

[0031] The aluminum foil-polycarbonate layered composite material was prepared by compounding the aluminum foil single-sided adhesive tape with a thickness of 0.05mm and the rolled polycarbonate plastic with a thickness of 0.43mm. Then die-cut the composite layered composite material, cut the plastic surface, and obtain the shielding cover mold material with the same shape as the overall shape after the shielding cover is unfolded (as shown in the attached figure 2 ). At the same time, in accordance with the folding requirements for preparing the shielding cover, use the indentation line of the knife die to press out the crease line 3 on the surface of the polycarbonate layer at the part of the shielding cover mold material that needs to be folded, and then drain the edge waste of the product. Finally, use a plastic bending machine to bend the shielding cover mold material obtained above according to the ...

Embodiment 2

[0034] Preparation of copper foil-polyester plastic composite shield:

[0035] The copper foil single-sided tape with a thickness of 0.05mm is compounded with a roll-shaped polyester plastic with a thickness of 0.188mm to prepare an aluminum foil-polyester layered composite material. Then carry out die-cutting processing on the compounded layered composite material, cut the plastic surface, and obtain the shielding cover molding material whose shape is consistent with the overall shape of the shielding cover after unfolding. At the same time, according to the folding requirements for the preparation of the shielding cover, use the indentation line of the knife mold to press the crease line on the surface of the polyester layer at the part of the shielding cover mold material that needs to be folded, and then discharge the edge waste of the product. Finally, a plastic bending machine is used to bend the shielding cover mold material obtained above according to the position of t...

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Abstract

The invention discloses a shielding case and a preparation method of the shielding case. The shielding case is composed of a supporting layer with certain strength and a conducting layer which is compounded on the outer side of the supporting layer. The supporting layer is non-conducting, and vicat softening temperature of the supporting layer is not lower than 100 DEG C. Metal materials used in a traditional shielding case product and metal stamping forming technology adopted in the process of machining are changed, and ordinary plastic composite metal foil rubber belt materials and plastic die cutting machining technology are adopted. An ordinary cutting die is used for cutting and machining plastic materials and metal foil rubber belt, raw material cost is low, machining technique is easy to control, and die cost and machining cost are low. Obtained products can effectively be shielded from electromagnetism.

Description

technical field [0001] The invention relates to a shielding case, its preparation method and application, in particular to a shielding case with a layered composite structure. Background technique [0002] In today's electronic manufacturing field, shielding covers are widely used, mainly in mobile phones, GPS and other fields. Usually, shielding covers are used to surround the components on the PCB board and electronic components such as LCM, circuits, assemblies, wires or interference sources of the entire system to prevent the interference electromagnetic field from spreading outward and prevent them from being affected by the external electromagnetic field. Anti-electromagnetic interference (EMI) purposes. The material of the existing shielding cover is generally processed by metal materials such as stainless steel, nickel-nickel copper, and nickel-plated steel plates with different thicknesses according to different use occasions. When installing, use SMT to solder di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
Inventor 杨闯
Owner DALIAN SHENGFENG ADHESIVE PROD
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