| 摘要 |
[PROBLEM TO BE SOLVED] To provide a biaxially oriented polyamide based resin laminated film roll, which is capable of bag forming processing by lamination smoothly with a good yield and which is able to form packages free of S-shaped curls efficiently. [SOLUTION] The polyamide based resin laminated film roll of the present invention has physical properties such as boiling water shrinkage percentage, surface roughness, refractive index in the thickness direction, etc. adjusted to achieve a predetermined range of degree of variability, when the polyamide based resin laminated film has a first sample cutout portion set up within 2 m from the winding end of film and final cutout portion within 2 m from the winding start of film, and at the same time, has a sample cutout portion set up at approximately every 100m from the first sample cutout portion. |
