INJECTION MOLDING METHOD OF RUBBER MOLDED PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide an injection molding method of a rubber molded product capable of shortening a cycle time while ensuring the demolding properties of the rubber molded product in molding an unvulcanized rubber molded product by injection molding. SOLUTION: After the cavity wall surface 9 of a lower mold 7 is covered with a tray 36 and the cavity wall surface 35 of an upper mold 8 is covered with a lid body 38, an unvulcanized rubber composition is injected in the cavity 11 to mold a bead filler 1b on the tray 36 and the bead filler 1b is ejected from the mold 6 along with the tray 36 and the lid body 38 during the unvulcanized state of the bead filler 1b. COPYRIGHT: (C)2006,JPO&NCIPI