FOOD PACKAGING FILM FOR BOILING TREATMENT, DEEP DRAW PACKAGED BODY BOTTOM MATERIAL, AND DEEP DRAW PACKAGED BODY

摘要

PROBLEM TO BE SOLVED: To provide a food packaging composite film for boiling treatment, having both excellent curl suppressing property and pinhole resistance at a low temperature.SOLUTION: A food packaging film for boiling treatment is configured of at least three layers including as an outermost layer, a layer containing at least one kind of polyester resin including a constitutional unit derived from terephthalic acid, a constitutional unit derived from 2,2,4,4-tetramethyl-1,3-cyclo butanediol, and a constitutional unit derived from cyclohexanedimethanol. A deep draw packaged body bottom material formed of the film, and a deep draw packaged body using the deep draw packaged body bottom material are each provided.