| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-shrinkable tube produced by using a new thermoplastic polyester mixture. SOLUTION: The thermoplastic polyester mixture comprises 5-95 wt.% of a component (A): a homopolymer or copolymer polyethylene terephthalate (PET) with intrinsic viscosity of 0.8-1.2 dL/g with respect to the total weight of the components (A) and (B) and 95-5 wt.% of a component (B): a polytrimethylene terephthalate (PTT) with intrinsic viscosity of 0.8-1.2 dL/g with respect to the total weight of components (A) and (B). The heat-shrinkable tube produced by using the thermoplastic polyester mixture shrinks when heated within hot water into the machine direction (MD) by 5% to 15% and into the transverse direction (TD) by more than 35%. COPYRIGHT: (C)2009,JPO&INPIT |
