Tob. Reporter, 2002, 129-4, p. 56, ISSN.0361-5693
Method for producing a tobacco filter material
U.S. Patent 6,344,239. A method for producing a tobacco filter material which is either a coating process for coating the surface of a fibrous or particulate cellulose with a cellulose ester having an average substitution degree of about 2.0 to about...