| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated film having high gas barrier properties, excellent in resistance to abrasion-induced pinhole formation and suitably usable for the packaging application where deterioration of the content by oxygen permeation is disliked as in the case of foods, pharmaceuticals and the like. SOLUTION: The biaxially stretched polyamide laminated film comprises following layers (A)-(C), wherein the layer (A) is arranged on at least one outermost layer and the thickness ratios of the layers (A), (B) and (C) to the total thickness are 10-60%, 5-40% and 10-60%, respectively. The film is obtained by carrying out a heat set after stretching 2.0-5.0 times to both longitudinal and transverse directions and has, as hot water shrinkage ratio at 95°C×5 min, a value of 0.5-5.0% for both longitudinal and transverse directions. Here, the layer (A): a layer formulated with PA6 and a softening modifier in a ratio of 99:1-90:10, the layer (B): a layer of an ethylene-vinyl acetate copolymer saponification product, and the layer (C): a PA6 layer not added with the softening modifier. COPYRIGHT: (C)2010,JPO&INPIT
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