| 摘要 |
PROBLEM TO BE SOLVED: To obtain a synthetic resin sheet, which is harmless and no pollution is caused, by a method wherein a surface film, which is made of low density polyethylene or the like and has a specified thickness, is pasted to both the sides of a main film, which is prepared by mixing polypropylene with an amorphous polyolefin. SOLUTION: A soft transparent synthetic resin sheet is produced by pasting a main film 1 forming an intermediate layer and a surface film 2 forming a surface layer to each other. The main film is made of a composition prepared by mixing 70-50 wt.% of polypropylene with 30-50 wt.% of an amorphous polyolefin, which is obtained by copolymerizing 1-10 wt.% of ethylene, 5-30 wt.% of butene and the balancing wt.% of propylene, and has a thickness of 20-1,200μm. In addition, the surface film 2 is made of polypropylene, low density polyethylene or straight-chain low density polyethylene and has a thickness of 5-100μm. |
