Patent ID: 6702565
Filing Date: 2004-03-09
Classification: B29C,B29L

Abstract:
A mold assembly for producing a molded object out of resin, comprising:a cavity configured to be filled with resin and form at least one surface of the molded object into a predetermined shape with at least one transfer surface of the cavity; a molding insertion member arranged to form another surface of the molded object, the molding insertion member comprising a thin plate; and a holding insertion piece configured to hold the molding insertion member, the holding insertion piece including a communication path that places a surface of the molding insertion member at a side opposite to the cavity in fluid communication with an exterior of the mold assembly so as to guide atmospheric air toward the surface of the molding insertion member; wherein, when the resin in the cavity is cooled, a pressure in the cavity decreases below a pressure of the atmospheric air and the atmospheric air is drawn into the communication path toward the molding insertion member, the drawn atmospheric air deflecting the molding insertion member toward the cavity to form a sink at the other surface of the molded object and to press the at least one surface of the molded object against the at least one transfer surface of the cavity.