METHOD FOR FORMATION of ELECTRO-CONDUCTIVE TRACES ON POLYMERIC ARTICLE SURFACE
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United States of America
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Sep 6, 2017
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Sep 6, 2017
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Abstract
The present invention relates to a production of electro-conductive traces on the surface of polymeric articles using laser excitation for the areas to be metallised, followed by activation of the laser-treated areas with a metal salt solution, the article is later rinsed in distilled water, and the activated areas are metallised in the chemical plating bath. The aims of the invention are to produce cost-effective conductive traces of the circuits for the application in 3D moulded interconnect devices, to increase the quality of the circuit traces improving the selective metallization process. An irradiation dose and scanning parameters for the surface excitation are chosen experimentally, provided that a negative static charge appears on the surface of the laser-irradiated areas. The chosen parameters ensure that any surface degradation of the polymer is avoided. The activation solution used in the method is aqueous solution consisting of one chosen salt comprising: silver (Ag), copper (Cu), nickel (Ni), cobalt (Co), zinc (Zn), chrome (Cr), tin (Sn) salt.
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