HEATTSHRINKABLE FILM* SHEET OR TUBE

摘要

PURPOSE:Title flexible products that are composed of a thermoplastic elastomer and an ethylene-1-butene copolymer with a constant ethylene content, thus showing soft and good feeling and low natural shrinkage. CONSTITUTION:100pts.wt. of an ethylene-1-butene copolymer containing 65- 90wt% of ethylene are kneaded with 10-200pts of a thermoplastic elastomer, preferably aliphatic hydrocarbon. The composition is extruded through a usual T-die or annular die into a film or tube at 170-250 deg.C and drawn at 60-100 deg.C under reheating usually at 1.2-4 draw ratio in the direction to which the shrinkage is required to occur.