Electrically conductive film

摘要

There is disclosed an electrically conductive polyester film comprising a polyester base film and a coating layer which is formed by applying a coating liquid to said base film, thereafter stretching the coated film and heat-setting the film, wherein said coating liquid is an aqueous composition and contains carbon black in an amount of 30 - 60 % by weight of the solid content and produces a layer when dried at 80 DEG C for 10 minutes, the rupture elongation of said layer being at least 300 % and is heat-settable at 10 - 200 DEG C, and said coating layer having a surface resistivity of 10<4> - 10<1><0> OMEGA / &squ& and a surface roughness of not more than 0.05 mu m. This polyester film exhibits good electric resistivity and light-shielding proper.