Patent ID: 8486217
Filing Date: 2013-07-16
Classification: B29C,B29K,B29L,B32B,H01M,Y02E,Y10T

Abstract:
1. A method of producing a packaging material, comprising: a temporary bonding which temporarily bonds a first sheet comprising a thermoplastic resin non-oriented film layer and a thermoplastic adhesive resin layer laminated on one surface of the thermoplastic resin non-oriented film layer and a second sheet comprising a heat resistant resin oriented film layer and an aluminum foil layer laminated on one surface of the heat resistant resin oriented film layer by passing the first sheet and the second sheet between a first pair of rolls in a state in which the thermoplastic adhesive resin layer and the aluminum foil layer are brought into contact with each other to press the thermoplastic adhesive resin layer and the aluminum foil layer while heating in a state in which the thermoplastic adhesive resin does not melt to obtain a pre-laminated sheet; and a complete bonding which integrally bonds the first sheet and the second sheet by heating the pre-laminated sheet to melt the thermoplastic adhesive resin, wherein at the complete bonding, the pre-laminated sheet is heated by bringing the pre-laminated sheet into contact with a heating roll which is one of the first pair of rolls, and the other of the first pair of rolls is out of contact with the heating roll and the pre-laminated sheet when the pre-laminated sheet is brought into contact with the heating roll.