METHOD AND DEVICE FOR INJECTION MOLDING

• Main Authors: KIMURA MIKIHIKO, NISHIYAMA TADASHI, ENJOJI NAOYUKI, ANDOU KEISUKE, OKONOGI DAISUKE, KAWACHI SHINYA
• Format: Patent
• Language: English; Korean
• Published: 28.07.2010
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; 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

A method for injection molding comprises the following steps: a step of preparing a first mold (41), a second mold (46), and a third mold (47), a step of sandwiching a separator single body (16) by the first mold (41) and the second mold (46), a step of injecting silicone rubber (59) into a front-side cavity through a gate (52) to form a front-side formed layer, a step of replacing the second mold (46) with the third mold (47) while the front-side formed layer is soft, and a step of penetrating the front-side formed layer by injection pressure of the silicone rubber (59) injected through the gate (52), filling the silicone rubber (59) into a back-side cavity through a penetration hole (30), and forming a back-side formed layer.