Patent ID: 6202276
Filing Date: 2001-03-20
Classification: B21D,B29C,B29K,B32B,H05K,Y10T

Abstract:
A process for manufacturing an electromagnetic interference shielding metallic foil cladded plastic outer shell product, comprising the following sequential steps of:(a) coating a first side of a superplastic alloy foil with an adhesive;(b) placing the adhesive-coated superplastic alloy foil in a first half mold with a second side of the foil contacting the first half mold, and heating and applying flow stress to the superplastic alloy foil to allow the foil to superplastically form into a predetermined shape and to allow the foil to cover on the first half mold, whereby the superplastic alloy is initially superplastically formed;(c) covering a second half mold attached to a nozzle of an injection machine onto the first half mold covered with the foil, and closing the two half molds to further deform the superplastic alloy foil, a mold cavity being formed between the adhesive-coated side of the superplastic alloy foil and the second half mold;(d) introducing softened plastic from the injection machine via the nozzle to the mold cavity, such that the superplastic alloy foil covered on the first half mold is completely formed and the softened plastic adheres on the adhesive-coated side of the superplastic alloy foil to form an electromagnetic interference shielding metallic foil cladded plastic outer shell product; and(e) removing the plastic outer shell product from the mold.