| abstract |
[PROBLEMS] To produce a food packaging film by laminating a plastic film, which is easy to apply, has excellent initial adhesion to the film, and further contains the contents in a food packaging bag produced using the food packaging film. An adhesive for food packaging films is provided that has high peel strength after sterilization and can maintain the appearance of the packaging bag film even when stored at high temperatures for a long period of time. (A) A polyester polyurethane polyol, (B) a polyester polyol, and (C) a urethane resin obtained by blending an isocyanate component. (A) includes (a1) a polyester polyol (a2) an isocyanate compound. The chain is extended, the equivalent ratio (NCO / OH) of the hydroxyl group of (a1) to the isocyanate group of (a2) is 0.60 to 0.85, and (B) has a glass transition temperature of −20 to 10 ° C. An adhesive for food packaging film. [Selection figure] None |