| 摘要 |
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. |
