| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging film which is superior in blocking resistance, and durability capable of suppressing hydrolysis of a lactic acid-based polymer, and has a various characteristics required for a small wrap film roll.SOLUTION: The packaging film includes both surface layers comprising a surface layer forming composition containing an olefin-based polymer (A), and any one kind or two kinds or more of the following (a)-(d), and an intermediate layer comprising an intermediate layer forming composition containing the lactic acid-based polymer (B) as a main component, and includes an adhesive layer comprising an adhesive forming composition containing an olefin-based polymer (A) and the lactic acid-based polymer (B) as main components between the surface layer and the intermediate layer. The (a)-(d) include: (a) a block copolymer of a vinyl aromatic compound and a conjugate diene or the hydrogenated derivative thereof, (b) a random copolymer of a vinyl aromatic compound and a conjugate diene or the hydrogenated derivative thereof, (c) petroleum resins, and (d) at least one kind of liquid additive selected from a liquid polybutene or a liquid polyisobutylene. |
