Patent ID: 8088326
Filing Date: 2012-01-03
Classification: B29C,C23C

Abstract:
1. A production method for producing a polymer member by using an injection molding machine provided with a mold and a heating cylinder, the production method comprising: introducing, into a molten resin in a heating cylinder, a pressurized fluid containing a modifying material, liquid carbon dioxide, and a liquid in which the modifying material is dissolvable; controlling a flow rate of the pressurized fluid by a syringe pump during the introducing step, the syringe pump including a first syringe pump for the liquid carbon dioxide and a second syringe pump for the liquid; injecting the molten resin, into which the pressurized fluid has been introduced, into the mold to form the polymer member in which the modifying material is contained inside of the surface of the polymer member; and during forming of the polymer member, preparing for a subsequent introducing step by: