| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated polypropylene resin film having heat-sealing strength sufficient to pack a heavy article, good in transparency, not curled unidirectionally and suitably usable for a packaging use, and a package using it. SOLUTION: This biaxially stretched laminated polypropylene resin film is constituted by successively laminating a base material layer (A) comprising a crystalline polypropylene resin, an intermediate layer (B) and a heat sealing layer (C) with a melting point of 150°C or below and characterized in that the thicknessμa of the base material layer (A), the thicknessμb of the intermediate layer (B) and the thicknessμc of the heat sealing layer (C) satisfy the relation:μb≥2(μa+μc)μc>μa. The intermediate layer (B) comprises a resin containing at least one kind of anα-olefin copolymer with a cold xylene soluble content of 3 wt.% or below. COPYRIGHT: (C)2005,JPO&NCIPI |
