BIAXIALLY ORIENTED NYLON FILM, LAMINATE WRAPPING MATERIAL AND PROCESS FOR PRODUCTION OF BIAXIALLY ORIENTED NYLON FILM

摘要

As a biaxially oriented nylon film, nylon 6 as a raw material , tensile tests (sample width of 15mm film art , gauge distance 50mm, 4 directions of the tensile rate 100mm / min) (MD direction , TD direction , 45 direction , and the elongation to break of 135 direction ), more than 70% , in the tensile testing of such films in stress - strain curve in the tensile stress at the time when the elongation is 50% ₁ and the tensile stress at the yield point ₂ of the ratio stress ratio a ( ₁ / ₂ ) is , is characterized in that 2 or more for all the four directions .