| 摘要 |
PROBLEM TO BE SOLVED: To improve slip retardance and antistatic properties by laminating a surface modified layer having specific static frictional coefficient and specific surface intrinsic resistance value at least on one side surface of a polyamide film. SOLUTION: A static frictional coefficient of a surface modified layer of a laminated polyamide film is 0.6 or more, and a surface intrinsic resistance value is 1×10<12>Ωcm or less. This film is manufactured by melting and extruding nylon 6 containing 0.1% of ethylene bisstearylamide and prepared unshaped silica from a T-die, and unoriented polyamide film is obtained. This unoriented film is longitudinally oriented to 50μm. One side surface of the obtained film is coated with coating liquid obtained by diluting water solution of moisture dispersive polyester resin and dodecyldiphenyl oxide sodium disulfonate with water and dried. Then, it is laterally oriented, and heat set at 215 deg.C. A thickness of the surface modified layer is 0.1μm, a thickness of the polyamide film is 15μm, its static frictional coefficient is 0.98, and its surface intrinsic resistance is 8×10<10>Ωcm. |
