A conductive film for electromagnetic shielding and its making method

Abstract

The invention discloses a conductive membrane used in an electromagnetic field layer. The conductive membrane includes an upper surface layer and a lower surface layer and a middle layer. The upper and the lower surface layers are made of surface decoration paper and the middle layer comprises adhesives and shield material in the adhesives. The middle layer splices the upper and the lower surfacelayers together, in order to form a laminar flexible whole at the same time of solidification and forming. The invention also discloses the manufacture method of the conductive membrane, which includes the following steps: 1) set up a demoulding layer on the base plate; 2) spread papers on the demoulding layer; 3) daub mixed resin on the papers; 4) scatter shield material on papers; 5) cover the shield material with papers with resin coating again; 6) heat pressing forming; 7) at last, demould after cooling. The conductive membrane is flexible structure and can be wound into a roller. The invention has the advantage of convenient usage, on the premise of shield effect guarantee.

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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