| 摘要 |
[PROBLEMS] To provide a roll of a biaxially oriented polyamide-based resin film. With the roll, bag-forming processing by laminating can be smoothly conducted in a satisfactory yield and a package free from an S-shaped curl can be efficiently obtained. [MEANS FOR SOLVING PROBLEMS] The roll of a polyamide-based resin film has been regulated so that when a first sampling part and a final sampling part are disposed within 2 m from the winding end for the film and within 2 m from the winding beginning for the film, respectively, other sampling parts are disposed at intervals of about 100 m from the first sampling part, and samples are cut out of the respective sampling parts, then the fluctuations of each of material properties including elastomer content, tensile modulus, boiled-water shrinkage, and thickness-direction refractive index are in a given range with respect to each of all the samples. |
