Process for the production of molded article with sealed pattern

摘要

A process for the production of a molded article having a surface including a sealed pattern by an injection compression molding method, which comprises placing a substrate (thickness: X (mm)) having a pattern on the front surface thereof in a cavity of a mold with the reverse surface of the substrate in contact with a cavity wall of the mold, injecting a molten thermoplastic resin into a space surrounded by cavity walls and the front surface of the substrate, and thereby forming a resin layer (thickness: Y (mm)) on the front surface of the substrate to form a molded article having the pattern sealed with the resin layer and having a thickness of 1 to 6 mm (=X+Y (mm)), wherein: a distance (Z+Y (mm)) of the space in the molded article thickness direction is set to satisfy the following relationships when the substrate is placed in the cavity of the mold, when Y is in the range of 0.3