| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject film having excellent slipperiness under high- humidity condition while keeping the transparency and surface gloss of the film by forming protrusions having a specific size on a polyamide film surface at a specific density and hydrophobicizing the film. SOLUTION: This polyamide film has a surface roughness characterized by the presence of 6-30/mm of protrusions having a height of >=0.06μm from the center line measured by a surface-roughness tester, a static contact angle of >=64 deg. with water at 23 deg.C, a haze value of <=10% and a gloss of >110. The film can be produced by compounding a polyamide resin with a surface- roughening substance, especially inorganic fine powder, concretely gel-type silica, etc., and a surface-hydrophobicizing substance, especially a long-chain aliphatic bisamide compound such as N,N'-ethylenebisbehenamide, forming the composition in the form of a film and drawing the film at an areal draw ratio of >=3. |
