LAMINATE MATERIAL AND LAMINATED CAN LID

摘要

PROBLEM TO BE SOLVED: To obtain good flavor properties and to suppress the shaving or peeling of a film positioned on an outer surface side when a laminate material is molded into a can lid. SOLUTION: The laminate material is molded into the can lid in such a state that the crystallinity of the substrate layer 31 of a film 30 positioned on an outer surface side is made lower than that of the film 30 positioned on an inner surface side. The film positioned on the inner surface side comprises an oriented crystalline polyester film of which the crystallinity is set to 40 to 60%. The film positioned on the outer surface side comprises a non-oriented crystalline polyester film of which the crystallinity is set to 30% or less. COPYRIGHT: (C)2004,JPO