Patent ID: 8460591
Filing Date: 2013-06-11
Classification: B29C,C08J,C08L,H01M,Y02E

Abstract:
1. A method for making a porous membrane, comprising: exposing a polymeric film established on a carrier belt to a non-solvent or a slightly miscible solvent of a polymer in the polymeric film, thereby inducing formation of a porous structure in the polymeric film, the polymeric film including a polymer and i) a gel-forming polymer, ii) ceramic particles, or iii) combinations of i and ii, the exposing including: transporting the polymeric film on the carrier belt into a bath of a non-solvent or a slightly miscible solvent of the polymer for a predetermined time, thereby finalizing the formation of the porous structure and forming the porous membrane; and removing the porous membrane from the non-solvent or slightly miscible solvent bath.