| 摘要 |
A method of manufacturing a lamination product having a barrier property, the method comprising the steps of: extruding and laminating a polyolefin resin layer constituting an outermost layer on an outer surface side of a paper support; and coextruding and laminating five layers of a second polyolefin resin layer, a second adhesive layer, a barrier layer, a first adhesive layer and a first polyolefin resin layer constituting an innermost layer on an inner surface side of the paper support so that the five layers are arranged in this order on an inner surface side of the paper support, wherein the barrier layer comprises a polyamide resin represented by the following chemical formula: and the said five layers are coextruded at 260-300° C. Preferably, at least the first polyolefin layer is extruded at 270-300° C., and the distance from a die lip of an extruder used for said coextrusion to the inner surface side of the paper support is adjusted to a distance of not more than 11 inches, and, onto the surface of the extruded resin flow, which surface will adhere to the paper, an ozone gas stream is blown at a rate of 3-30 Nm<3>.
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