| 摘要 |
PROBLEM TO BE SOLVED: To provide a shrinkable film capable of improving, while using a resin having a specific gravity difference from a PET resin, the heat shrinkability of the film along a specified direction at a shrinking step, bearing intrinsic film strengths and an attribute of being easily torn whenever necessary, and capable of improving the work efficiency of the film.SOLUTION: The provided film is a laminate film obtained by laminating an intermediate layer 11 including a polypropylene resin and a thermoplastic elastomer and surface layers 12 and 13 consisting of a polystyrene resin and by stretching the laminate virtually monoaxially along the winding direction (MD) of the film; the respective mixing weight ratios of the polypropylene resin and styrenic elastomer within the intermediate layer satisfy 55 parts.wt. : 45 parts.wt. through 95 parts.wt. : 5 parts.wt.; the styrene content of the styrenic elastomer is 30 wt.% or below; the tear strength along the widthwise direction (TD) based on the trouser tear method is 1.5 N or below. |
