INJECTION COMPRESSION MOLDING METHOD

• Main Authors: NAKAMURA HIDEKI, TOSHIMA MASAO
• Format: Patent
• Language: English
• Published: 12.10.2006
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CABINETS; CHEMISTRY; COFFEE MILLS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DESKS; DOMESTIC ARTICLES OR APPLIANCES; DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; DRAWERS; FIXED CONSTRUCTIONS; FURNITURE; GENERAL DETAILS OF FURNITURE; HUMAN NECESSITIES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; METALLURGY; OFFICE FURNITURE; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; SEWERAGE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SINKS; SPICE MILLS; SUCTION CLEANERS IN GENERAL; TABLES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TOILET ACCESSORIES; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WATER SUPPLY; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide an injection-molding method for a polytrimethylene terephthalate resin composition which shows excellent moldability of a large-sized article, and solves problems such as a crack, a warp and burning in particular in molding a large-sized article. SOLUTION: The injection compression-molding method for the polytrimethylene terephthalate resin composition is characterized in that molds 1 and 2 begin to be closed by exerting mold clamping force on the way of injecting the resin and are completely closed by the end of the injection. COPYRIGHT: (C)2007,JPO&INPIT