RESIN MOLDED PRODUCT AND ITS MANUFACTURING METHOD

• Main Authors: ITO TATSURO, KAWASHIMA TAIICHIRO
• Format: Patent
• Language: English
• Published: 14.06.2007
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a resin molded product partially having a thick-walled part and a manufacturing method of the resin molded product capable of effectively performing the occurrence preventing measure of a sink caused by the injection of a pressurized gas at the time of production of the resin molded product. SOLUTION: The resin molded product 8 partially has the thick-walled part 85 protruded from its back surface 82 on the side opposite to the design surface 81 of the resin molded product 8. The gas sealing part 87 protruded from the back surface 82 is provided between the edge part 19, which is formed at the position adjacent to the parting part of a mold used at the time of molding of the resin molded product 8 and the thick-walled part 85 and the leak of the pressurized gas, which is introduced into the gap between the thick-walled part 85 on the side of the back surface 82 of the resin molded product 8, and the gas sealing part 87, from the parting part at the time of molding in the mold is suppressed by the gas sealing part 87. The gas sealing part 87 has an uneven or stepped deformed part 871 formed to at least one of the apex part in the protruding direction or the side surface on the side of an edge part 86. COPYRIGHT: (C)2007,JPO&INPIT