Abstract: A method for performing radiation-inducted graft polymerization on substrates in the form of webs of woven or non-woven fabric, which includes the steps of exposing a substrate woven or non-woven fabric composed of polymer fiber to electron beams in a nitrogen atmosphere, contacting the irradiated substrate with a specified amount of monomer in a nitrogen atmosphere, and subjecting the monomer and the substrate in mutual contact to graft polymerization in a nitrogen atmosphere, characterized in that the first through third steps are performed in succession.