POLYESTER COMPOSITE BLOW MOLDED PRODUCT AND ITS PRODUCTION

• Main Authors: SUZUKI MASATO, FURUI KENJI, AOSHIMA HIRONOBU
• Format: Patent
• Language: English
• Published: 30.09.1997
• Edition: 6
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To obtain a polyester composite blow molded product extremely reduced in drawdown of a polyester elastomer, excellent in the multicolor and/or multilayered blow moldability of a polyester resin, having heat resistance and flexibility and excellent in the fitting properties and close adhesiveness to other structure product. SOLUTION: A polyester composite blow molded product consists of a resin material (A) based on a copolymer with an m.p. of 220 deg.C or lower based on polyalkylene terephthalate having a 2-4C alkylene group and containing 5-40mol% of a comonomer unit copolymerizable therewith and a resin material (B) composed of a thermoplastic polyester elastomer with a shear rate of 120sec<-1> and melt viscosity of 10,000-60,000 poise and is produced by subjecting the resin material (A) and the resin material (B) to multicolor and/or multilayered blow molding at an extrusion temp. of 230 deg.C or lower.