Monoaxially oriented multilayered packaging material

摘要

A multilayered packaging material having good piercing resistance and tearability and being excellent in appearance, transparency and so forth, can be produced by orienting multilayered structure which is composed of a polyamide resin layer and other thermoplastic resin layer(s) at a monoaxially stretching ratio of 1.5- to 7.0-fold in such a manner that the thickness of the polyamide resin layer is 3 to 30 mu m and the thickness(es) of the other thermoplastic resin layer(s) is (are) at least twice as much as that of the polyamide resin layer.