BIAXIALLY ORIENTED NYLON FILM, LAMINATED PACKAGING MATERIAL AND METHOD FOR PRODUCING BIAXIALLY ORIENTED NYLON FILM

摘要

PROBLEM TO BE SOLVED: To provide a biaxially oriented nylon film which is excellent in formability, strength and pin hole resistance as a main substrate for cold forming packaging materials and the like, to provide a laminated packaging material containing the same, and to provide a method for producing the biaxially oriented nylon film.;SOLUTION: This biaxially oriented nylon film comprising Ny6 as a raw material is characterized in that the crystallinity of the film is 20 to 38%; the breaking elongations of the film in four directions (MD direction, TD direction, 45°direction, 135°direction) in a tensile test (sample width :15 mm, distance between marked points : 50 mm, tensile rate: 100 mm/min) are each ≥70%; and a stress ratio A (σ₁/σ₂) of a tensile stressσ₁ at an elongation of 50% to a tensile stressσ₂ at yield point in a stress-strain curve in the tensile test of the film is ≥2 in each of the above-mentioned four directions.;COPYRIGHT: (C)2008,JPO&INPIT