Heat-shrinkable pore-containing film, molded article using this heat-shrinkable pore-containing film, heat-shrinkable label, and container using or mounting this molded article

摘要

PPROBLEM TO BE SOLVED: To be superior in high rigidity, breakage resistance, and shrinkage characteristics, small in natural shrinkage, and low in bulk density by using a polylactic acid resin derived from vegetable and to easily carry out liquid specific gravity separation when used as a label for a PET bottle. PSOLUTION: A film has at least two layers of a layer (I) composed of a mixed resin composition containing a component (A) of a prescribed polylactic acid resin composition and a component (B) of a prescribed polyolefin resin composition and a layer (II) composed of a mixed resin composition containing the component (A) and a component (C) of a prescribed soft component and is stretched in at least one direction. The ratio D/L of the layer (I) and the layer (II) is within a prescribed range. In the layer (I), the aspect ratio of a dispersion domain made of the component B dispersed in a matrix of the component (A) is 5-50. A heat-shrinkable hole-having film having a prescribed coefficient of heat shrinkage is used. PCOPYRIGHT: (C)2007,JPO&INPIT