abstract |
Disclosed herein are a biaxially stretched polyparaphenylene sulfide film having protuberances on the surface of the film in number of not less than 102/mm2 of the surface thereof, an average diameter of the bottom part of the protuberances being from 5 to 40 mu m and an average height of the protuberances being from 0.3 to 2 mu m, and process for producing the same. |