Patent ID: 6855387

Claim:
A lamination product having a barrier property, the lamination product comprising: a base material layer comprising at least a polyolefin resin layer constituting an outermost layer and a paper support; and five layers directly bonded in sequential order, a second polyolefin resin layer, a second adhesive layer, a barrier layer essentially consisting of polyamide resin represented by the following chemical formula; a first adhesive layer and a first polyolefin resin layer constituting an innermost layer, said five layers being arranged in this order on an inner surface side of the base material layer, wherein said five layers are laminated, at the same time respectively, on an exposed surface of the paper support through a coextrusion of fused resin of the respective five layers, and wherein said barrier layer is formed by coextrusion lamination at an extruding resin temperature of 260-300° C.