A conductive film for electromagnetic shielding and its making method

Abstract

The invention discloses a conductive membrane used for electromagnetic shielding layer. The conductive membrane includes upper and lower surface layers and an intermediate layer. Both the upper and lower surface layers are made of surface decorative paper, and the intermediate layer is made of adhesive and dispersed in the adhesive Composed of shielding materials, the middle layer bonds the upper and lower surface layers together while curing and shaping, thus forming a sheet-like flexible whole. The invention also discloses a method for manufacturing the above-mentioned conductive diaphragm, which includes the following steps: 1) setting a release layer on the substrate; 2) laying the paper on the release layer; 3) coating the mixed resin on the paper ; 4) spreading shielding material on the paper; 5) covering the shielding material again with paper coated with resin; 6) hot pressing and setting; 7) finally, releasing the film after cooling. Because the conductive diaphragm is a flexible structure, it can be rolled into a roll when not in use. Therefore, it has the advantage of being convenient to use under the premise of ensuring the shielding effect.

Description

technical field [0001] The invention relates to a conductive diaphragm for electromagnetic shielding and a manufacturing method thereof. Background technique [0002] With the rapid development of modern science and technology, electronic technology has been widely used, and various electrical appliances and electronic equipment have spread in every corner of human society. While modern electronic technology brings us convenience, it also brings us electromagnetic radiation. These electromagnetic radiation will not only form electromagnetic interference and electromagnetic leakage, but also cause harm to people's health. [0003] In order to overcome the harm that electromagnetic radiation brings to us, people put forward the theory of electromagnetic shielding. The so-called electromagnetic shielding is a shielding shell made of a certain material that seals the area that needs to be shielded to form electromagnetic isolation. The electromagnetic field inside cannot go be...

AI Technical Summary

Problems solved by technology

Surface conductive shielding materials still have the problems of complex process, long production cycle and high processing cost due to the need to use special equipment and complicated procedures

And some filling type shielding materials, because the shielding layer is made together with the processing of the composite material body on site, the adhesive is not only used as the matrix of the shielding material in the shielding layer, but also as the bonding layer between the upper and lower wood layers. If the shielding material is added too much, the bonding strength of the adhesive layer will be reduced. If the shielding material is added too little, it will directly affect the final shielding effect. Difficult to balance both connection and shielding

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