METHOD AND DEVICE FOR INJECTION MOLDING

• Main Authors: ANDOU, KEISUKE, OKONOGI, DAISUKE, KIMURA, MIKIHIKO, KAWACHI, SHINYA, ENJOJI, NAOYUKI, NISHIYAMA, TADASHI
• Format: Patent
• Language: English; French
• Published: 21.01.2014
• 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, a second mold, and a third mold, a step of sandwiching a separator single body by the first mold and the second mold, a step of injecting silicone rubber into a front-side cavity through a gate to form a front-side formed layer, a step of replacing the second mold with the third mold 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 injected through the gate, filling the silicone rubber into a back-side cavity through a penetration hole, and forming a back-side formed layer.