| 摘要 |
PURPOSE:To provide a biaxially stretched polyamide multilayered film not generating tearing and breakage in its longitudinal direction when the film is formed by a sequential biaxial-stretching method continuously performing lateral stretching after performing longitudinal stretching. CONSTITUTION:A base material layer (A) composed of a polyamide resin, an adhesive layer (B) composed of an adhesive resin and a surface layer (C) composed of a polyolefinic resin are subjected to co-extrusion in the order of (A)/(B)/(C) to form a multilayered film of at least three-layered constitution. Subsequently, this multilayered film is successively biaxially stretched to obtain a biaxially stretched polyamide multilayered film. In this case, the thickness of the surface layer (C) is three times or less that of the base material layer (A). By this method, the biaxially stretched polyamide multilayered film suitably usable as a film for packing edible processed meat can be provided. |
