| 摘要 |
PURPOSE:To provide the title film excellent in thermal shrinkage, heat stability, etc., by mixing a polyvinyl chloride resin with a specified amount of a mixture of a phthalic ester with a high-softening polyester polyol as a plasticizer and forming the resulting mixture into a film. CONSTITUTION:100 pts.wt. polyvinyl chloride resin is mixed with a mixture of below 5 pts.wt. phthalic ester (e.g. dioctyl phthalate) with 1-5 pts.wt. polyester polyol of a softening point of 55 deg.C or below as a plasticizer. The obtained resin composition is molded into a film by, e.g. extrusion molding and oriented chiefly in one direction to produce a low-spontaneous shrinkage polyvinyl chloride film. In this way, a film having a thermal shrinkage in one direction of 25% or above, a thermal shrinkage to the direction rectangular to that direction of 5% or below and a spontaneous shrinkage of 2.5% or below and being desirable for labels for polyethylene bottles, etc., can be obtained. |
