| 摘要 |
PROBLEM TO BE SOLVED: To develop a biaxially stretched multilayered polypropylene film excellent in concealability, surface gloss and low temperature heat sealability, having fine voids therein and suitable for a packaging film or the like. SOLUTION: The biaxially stretched multilayered polypropylene film is constituted by laminating a (meth)acrylic acid polymer (F) layer obtained from a propylene polymer (A) on one side of a biaxially stretched film base material layer obtained from a propylene polymer composition composed of 70-95 wt.% of the propylene polymer (A), 3-15 wt.% of calcium carbonate (B) with a mean particle size of 1-5μm surface-treated with a higher fatty acid and 2-15 wt.% of titanium oxide (C) and laminating a heat-fusible layer obtained from a propylene/α-olefin random copolymer (D) on the other side thereof. COPYRIGHT: (C)2005,JPO&NCIPI
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