| 摘要 |
<p>PURPOSE: A multilayer film is provided to enable to orient with the high magnification while accumulating with polypropylene as having a good gas interception property. CONSTITUTION: A layered film is composed of two kinds of EVOH(a1, ethylene-vinyl alcohol copolymer) and EVOH(a2) having different melting points is produced by orienting a layered structure made by laminating as intervening an adhesive resin(B) layer between a resin composition(A) and a polypropylene(C) layer by 7-12 times at least to one direction. Herein, the thickness ratio of the resin composition(A) to the thickness of a whole layer is 3-30%, the thickness ratio of the adhesive layer(B) is 1-30% and the thickness ratio of the polypropylene(C) layer is 40-96%. Also, an average containment ratio of ethylene of the resin composition(A) used in the layered film is 38-45 mol%.</p> |
