| 摘要 |
PROBLEM TO BE SOLVED: To provide a vinylidene chloride-based copolymer film good in mutual slipperiness at high temperatures and slight in deformation of a product. SOLUTION: The vinylidene chloride-based copolymer film is composed of 10-50 wt.% of (A) a vinylidene chloride-based copolymer with 90-96 wt.% in vinylidene chloride content and 120,000-130,000 in weight-average molecular weight and 50-90 wt.% of (B) a second vinylidene chloride-based copolymer 80 wt.% or greater but less than 90 wt.% in vinylidene chloride content and 120,000-130,000 in weight-average molecular weight. A method for producing the vinylidene chloride-based copolymer film is also provided, comprising making orientation of the unoriented vinylidene chloride-based copolymer film at temperatures within a specific range. COPYRIGHT: (C)2007,JPO&INPIT |
