INJECTION MOLDING METHOD, MOLDED ARTICLE AND INJECTION MOLDING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a process for attaining a higher functionalization on the surface of a resin, in an injection molding method for conducting a surface modification at a resin injection by using a supercritical fluid such as carbon dioxide or the like as a solvent. SOLUTION: The injection molding method of a thermoplastic resin is the one for resin molding by modifying the surface of the thermoplastic resin by a supercritical fluid containing a solute and comprises a step for injecting the thermoplastic resin into a cavity of a mold so as a space to be formed between the surface of the thermoplastic resin and the cavity of the mold, a step for introducing the supercritical fluid containing the solute into the space and a step for discharging the supercritical fluid containing the solute to the outside of the space. COPYRIGHT: (C)2005,JPO&NCIPI