| 摘要 |
PROBLEM TO BE SOLVED: To obtain excellent gas barrier properties by providing a crosslinking film obtained by reacting a specific amount of a crosslinker with a saponified material of a diacetone acrylamide-aliphatic vinyl ester copolymer containing a specific amount of a diacetone acrylamide unit on one surface of a thermoplastic resin film. SOLUTION: In a laminated film used for a food packaging material or the like having an excellent water resistance and gas barrier properties, at least one surface of a thermoplastic resin film is provided with a crosslinking film obtained by reacting 0,1 to 20 pts.wt. of a crosslinker with 100 pts.wt. of a saponified material of an aliphatic vinyl ester copolymer containing 0.05 to 15 mol% of a diacetone acrylamide unit. As the vinyl ester, a vinyl acetate is particularly preferable. The saponified material of the aliphatic vinyl ester copolymer is copolymerized with 0.05 to 10 mol% of anα-olefin polymer unit. As the crosslinker, one or more type of a compound selected from a hydrazine compound is preferable.
|
