| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject film, comprising a specific vibylidene chloride- based copolymer, capable of producing without lowering heat stability in the extrusion processing and capable of satisfying mechanical property as a barrier heartwood. SOLUTION: This film comprises a vinylidene chloride-based resin comprising a vinylidene chloride-methyl acrylate-methyl methacrylate copolymer and contains (A) 90-98wt.% of vinylidene chloride, (B) 0.5-9.5wt.% of methyl methacrylate. The vinylidene chloride-based copolymer is that a quantitative relationship between the components B and C is in the range of the inside containing the five sides of a pentagon comprising by bonding five coordinate points of a point C(1.5%, 8.5%), a point B(0.5%, 6.5%), a point D(0.5%, 1.5%), a point E(1.5%, 0.5%), a point F(3.5%, 0.5%) and a point G(9.5%, 0.5%) in a right angle coordinate graduating a content of the component B on the transversal axis and a content of the component C on the vertical axis. |
