| 摘要 |
PURPOSE:To obtain thermally shrinkable film that is excellent in shock resisting strength, transparent, good in slip properties, convenient for mechanical packaging and does not give damage to an incinerator for waste disposal by using nitrile resin film having a specific thermal shrinkage rate for a specific constitution. CONSTITUTION:This sheet is obtained by orienting at least in the uniaxial direction the resin prepared by graft-polymerizing 97-70wt% of a mixture in which the weight ratio of acrylonitrile/methylacrylate shows 95/5-50/50 to 3-30wt% of acrylonitrile-butadiene copolymer containing acrylonitrile of 5-60wt%. At 100 deg.C said sheet has thermal shrinkage rate 30-80% in the orientation direction and the thermal shrinkage rate rectangular to the above is 15% max. In the uniaxially oriented film the tensile elastic modulus rectangular to the orientation direction is 10.000kg/cm<2>min. |
