| 摘要 |
PROBLEM TO BE SOLVED: To provide a multilayered stretched polyamide film having excellent transparency, tensil strength, ply separation strength, gas barrier properties and dimensional stability, excellent in retort resistance and suitable for packing at economical cost. SOLUTION: This film consists of at least three layers, that is, a resin layer (X) formed from a compsn. prepared by adding 0.5-3 wt.% of the following polymeric compd. P to polyamide (A) formed from a xylylenediamine component and a 4-12C aliphatic dicarboxylic acid component, a resin layer Y of aliphatic polyamide (B) and the polyamide layer Z containing 50-80 wt.% of polyamide (A) and 50-20 wt.% of polyamide (B) provided between both layers (X), (Y). The polymeric compd. P is modified polyethylene consisting of 95-50 wt.% of ethylene, 0.1-10 wt.% of unsaturated dicarboxylic acid and or its deriv. and 4.9-40 wt.% of unsaturated carboxylic acid and/or its lower alkyl ester deriv. |
