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Manufacturing method of electromagnetic shielding material, electromagnetic shielding material and electronic product

A technology of electromagnetic shielding material and manufacturing method, applied in magnetic field/electric field shielding, metal material coating process, electrical components, etc., can solve the problems of difficult to thin conductive cloth, high cost, large environmental pollution, etc. Effect and flexibility of use, boosting energy, simple process effect

Pending Publication Date: 2020-09-04
深圳市乐工新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process of the existing conductive cloth is long, and after several chemical plating or electroplating processes, the environmental pollution is large, and the adhesion of the metal layer is not ideal.
Moreover, due to the requirements of the process, the thickness of the conductive cloth is difficult to make thin, and its thickness is usually more than 18 microns; in addition, due to the difficulty of precise control in the production process of the conductive cloth, the product qualification rate is low and the cost is high

Method used

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  • Manufacturing method of electromagnetic shielding material, electromagnetic shielding material and electronic product
  • Manufacturing method of electromagnetic shielding material, electromagnetic shielding material and electronic product
  • Manufacturing method of electromagnetic shielding material, electromagnetic shielding material and electronic product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A polymer film layer is provided, the thickness of the polymer film layer is 1.5 microns, and the material is polyethylene terephthalate.

[0046] A polymer film layer is provided, the thickness of the polymer film layer is 1.5 microns, and the material is polyethylene terephthalate.

[0047] The polymer film layer is baked at a temperature of 45 degrees centigrade for 24 hours.

[0048] Carry out laser drilling to the polymer film layer that is processed through baking, make polymer film layer form several through holes, the aperture of some through holes is 0.1 micron, and the pitch is 0.1 micron, and the shape of several through holes is circular.

[0049] Carry out corona treatment to two surfaces of the polymer film layer after punching, and the corona treatment time is 1 second. The dyne value of both surfaces after corona treatment was 56.

[0050] A layer of metal shielding layer is respectively sputtered on the two surfaces of the polymer film layer after cor...

Embodiment 2

[0053] A polymer film layer is provided, the thickness of the polymer film layer is 6 microns, and the material is polycarbonate.

[0054] The polymer film layer is baked at a temperature of 80 degrees centigrade for 1 hour.

[0055] Carry out laser drilling to the polymer film layer that is processed through baking, make polymer film layer form some through holes, the aperture of some through holes is 100 microns, and the pitch is 100 microns. Some of the through holes are triangular in shape.

[0056] Carry out corona treatment to the two surfaces of the polymer film layer after punching, and the corona treatment time is 10 seconds respectively. The dyne value of both surfaces after corona treatment was 54.

[0057] The first layer of metal shielding layer is sputtered on the two surfaces of the polymer film layer after corona treatment and the hole walls of several through holes, with zinc as the target material, and continuous winding coating is adopted. The coating proc...

Embodiment 3

[0060] A polymer film layer is provided, the thickness of the polymer film layer is 2 microns, and the material is polypropylene.

[0061] Laser drilling is carried out to the polymer film layer, so that the polymer film layer forms some through holes, the aperture of some through holes is 10 microns, the hole distance is 10 microns, and the shape of some through holes is quadrilateral.

[0062] The two surfaces of the polymer film layer were subjected to corona treatment, and the corona treatment time was 5 seconds respectively. The dyne values ​​of the two surfaces after corona treatment were 40 respectively.

[0063] A metal shielding layer is respectively sputtered on the two surfaces of the corona-treated polymer film layer and the walls of several through holes, with titanium as the target material, and continuous winding coating is adopted. The coating process conditions are: vacuum The temperature is 0.2Pa, the continuous winding plating speed is 295m / min, the plating...

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Abstract

The invention discloses a manufacturing method of an electromagnetic shielding material, the electromagnetic shielding material prepared by the manufacturing method and an electronic product applyingthe electromagnetic shielding material. The manufacturing method of the electromagnetic shielding material comprises the following steps: a polymer film layer is provided, and the thickness of the polymer film layer is larger than or equal to 1.5 micrometers and smaller than or equal to 6 micrometers; the polymer film layer is punched, so that a plurality of through holes are formed in the polymerfilm layer, the hole diameter of the through holes ranges from 0.1 micrometer to 100 micrometers, and the hole distance ranges from 0.1 micrometer to 100 micrometers; roughening the polymer film layer to enable the dyne value of the polymer film layer to be greater than or equal to 44 and less than or equal to 70; vapor deposition is carried out on the two roughened surfaces respectively, and atleast one metal shielding layer is formed on each surface and the hole walls of the through holes respectively; according to the technical scheme, the electromagnetic shielding material with the two-sided conduction function is very thin and good in flexibility.

Description

technical field [0001] The invention relates to the technical field of electromagnetic shielding, in particular to a method for manufacturing an electromagnetic shielding material, an electromagnetic shielding material prepared by the method, and electronic products using the electromagnetic shielding material. Background technique [0002] Conductive cloth is an electromagnetic shielding material with good conductivity and electromagnetic wave shielding effect. Electromagnetic shielding conductive cloth is widely used in electronics, instrumentation and other industries due to its excellent vertical conduction and shielding performance, and can prevent electronic components from being damaged and aged due to static electricity. However, the production process of the existing conductive cloth is long, through several chemical plating or electroplating processes, the environmental pollution is large, and the adhesion of the metal layer is not ideal. Moreover, due to the requ...

Claims

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Application Information

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IPC IPC(8): C08J7/06C08J7/12C08L67/02C08L69/00C08L23/12C08L23/20C08L79/08C23C14/20C23C14/34H05K9/00
CPCC08J7/06C08J7/123C23C14/34C23C14/205H05K9/0081C08J2367/02C08J2369/00C08J2323/12C08J2323/20C08J2379/08
Inventor 夏祥国黄太
Owner 深圳市乐工新技术有限公司
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