| 摘要 |
<p>PURPOSE:To manufacture an aluminum core laminated sheet which is excellent in resistances to soldering heat at normal state and after moistening treatment, in adhesion between an aluminum base plate and resin and in resistance to soldering heat at high temperature by a method wherein an insulating resin layer is formed onto the roughened surface of the aluminum base plate. CONSTITUTION:A cleansed aluminum core is dipped in zinc-substituted plating solution in order to form a zinc plated layer on its surface. By using said substituted zinc plated layer as the etching resist, the aluminum core is unevenly etched by being dipped in alkaline solution in order to obtain finely roughened form of the surface of the core. After the finish of etching, the aluminum core is rinsed and then dipped in acid solution to remove the zinc layer. In case of resin used singly or resin containing filler, said resin is spread over the aluminum surface by means of curtain coating, roll coating or the like and, after that, dried and/or hardened in order to obtain a laminated sheet.</p> |
