| 摘要 |
PURPOSE: A method for producing shrinkable tube using solvent swelling is provided to give good heat property, mechanical property and electric property, and be easy to form shrinkable tube. CONSTITUTION: The method comprises extruding and injecting the tube of desired size using copolymer to produce tube(1); immersing the tube obtained from the step in the swelling solvent, a chloroform(CHCl3) for at least 10 min; and packaging the swelled tube with package in which air is infused. The copolymer is modified polyester. The modified polyester is produced by polymerizing PET(Poly ethylene terephthalate) and PBT(Poly butylene terephthalate) with soft segment. The PET and PBT are crystal polyester resins, and the soft segment has amorphous rubber property.
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