| 摘要 |
PURPOSE:The titled film excellent in heat shrinkability, transparency and mechanical packaging characteristics, and easily reclaimable and disposable by burning, which is prepd. by stretching a styrene-butadiene block copolymer of a specified composition. CONSTITUTION:A film of a resin composition obtd. by compounding 100pts.wt. styrene-butadiene block copolymer of the formula (wherein S is a styrene block; B is a butadiene block; n is at least 2) contg. 70-93wt% styrene and 30-7wt% butadiene with 0-50pts.wt. polystyrene, is uniaxially or biaxially stretched to obtain a heat-shrinkable film. |
