Patent ID: 6103167
Filing Date: 2000-08-15
Classification: B29C,B60R

Abstract:
A process for producing a sandwich molded article comprising a skin or outer layer of a first synthetic resin comprised of thick and thin portions and a core layer of a second synthetic resin, which process comprises the steps of:adjusting a temperature of an inner surface of a mold in a section corresponding to the portion to be made thick, to a temperature lower than a higher temperature of an inner surface of the mold in a section corresponding to the portion to be made thin, wherein the mold is composed of at least two mold sections and constitutes a cavity inside,injecting the first synthetic resin in a molten state into the cavity of the mold in such an amount that does not completely fill the cavity and leaves a space wherein the first synthetic resin does not exist,injecting the second synthetic resin in a molten state into the first synthetic resin in a softened state in an amount sufficient so as to fill the cavity,cooling and solidifying a molded article, the outer layer being made thick in that portion formed by the inner surface of the mold at the lower temperature and the outer layer being made thin in that portion formed by the inner surface of the mold at the higher temperature, andtaking the molded article out of the mold.