Patent ID: 6022330
Filing Date: 2000-02-08
Classification: A61L

Abstract:
A method for producing a wound dressing material which can be easily removed from a wound surface after application thereto comprising the following steps:(i) immersing a non-woven fabric substrate with a solution containing at least one monomer selected from the group consisting of N-isopropylacrylamide monomer (PNIPAAm), N,N'-diethylacrylamide (DEAAm), and acryloyl pyrrolidine (APY);(ii) exposing said substrate and said monomer-containing solution to .gamma.-ray radiation ranging from 10 to 100 kGy or UV irradiation after plasma pretreatment of said non-woven fabric substrate such that said monomer becomes grafted by copolymerization onto the surface the fibers which comprise said non-woven fabric substrate; and(iii) subsequently washing and drying the resultant non-woven fabric substrate to which is grafted said monomer via copolymerization to produce a wound dressing material which can be applied to a wound and easily removed therefrom after application.