| 摘要 |
PURPOSE: To obtain a polypropylene laminated oriented film, in which transparency, mapping properties and blocking resistance are improved and which has excellent external appearance of a film. CONSTITUTION: This film is made of a layer consisting of 0.00001-0.5 pts.wt. of a crystalline nucleating agent such as di(p-methylbenzylidene) sorbitol, polycyclopentane, tetrafluoroethylene or the like and 100 pts.wt. of crystalline polypropylene and layer consisting of 0.01-0.5 pts.wt. of blocking resisting agent such as spherical silica having the average particle diameter of 0.1-10μm, fine crosslinked polymethyl methacrylate particles or the like and 100 pts.wt. of crystalline polypropylene so as to be laminated to each other and then at least stretched unidirectionally. In the film, the crystalline nucleating agent and the blocking resisting agent do not substantially exist in the same layer. At the same time, the crystalline polypropylene layer containing the blocking resisting agent exists at least one surface of the polypropylene laminated oriented film.
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