| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-shrinkable hole-containing film which is reduced in bulk density and superior in printing aptitude, high rigidity, fracture resistance, and shrinkage characteristics, a molding using the film, and to provide a container fitted with a heat-shrinkable label. SOLUTION: An unoriented laminated film constituted of at least two layers of a layer (I) comprising a polylactic acid resin composition and a polyolefin resin composition immiscible in the polylactic acid resin composition and a layer (II), containing the polylactic acid resin composition as the main component is stretched in at least one direction. In the layer (I), the aspect ratio of the direction, crossing at right angles to the main shrinkage direction of a dispersed domain, made of a component B dispersed in a matrix made of a component A to the main shrinkage direction, is 5-50, and the heat-shrinkage factor in the main shrinkage direction of the laminated film, when the film is immersed in water of 80°C for 10 s is at least 20%. COPYRIGHT: (C)2007,JPO&INPIT |
