LAMINATED FILM, PAPER COMPOSITE BASE MATERIAL AND CONTAINER

摘要

PROBLEM TO BE SOLVED: To provide a paper composite base material having a laminated film giving sufficient gas barrier property, light shielding property, moisture proofing proper and having good straw perforating property without being damaged due to a folding work or the like in can making. Ž

SOLUTION: In the laminated film 22 formed by laminating at least a first polyethylene layer 32 on one surface of an oxygen gas barrier layer 31 and at least a second polyethylene 33 on the other surface thereof, at least one of the first polyethylene layer 32 and the second polyethylene layer 33 has ≥10 μm thickness and 0.1-0.5 mass% black pigment and 5-15 mass% white pigment. The oxygen gas barrier layer 31 has ≤30 μm thickness and ≤0.5 cm3/(m2×day×atom) gaseous oxygen permeability under 30°C, 90% RH and 1 atom. The laminated film 22 is laminated on one surface of a paper material 21 and the polyolefin layer 23 is laminated on the other surface of the paper material 21 to form the paper composite base material 11. Ž

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