Cigarette filter materials

• Main Authors: DONALD E. LASLIE, PAUL N. GAUVIN, NAVIN GAUTAM, CALVIN ROGER WOODINGS, WILLIAM B. EDWARDS III, KENNETH A NEWMAN
• Format: Patent
• Language: English
• Published: 15.01.1996
• Edition: 6
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BRAIDING; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CIGARETTES; CIGARS; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; HUMAN NECESSITIES; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES; MOUTHPIECES FOR CIGARS OR CIGARETTES; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-WOVEN FABRICS; SMOKERS' REQUISITES; SPINNING; TEXTILES; TOBACCO; TOBACCO SMOKE FILTERS; TRIMMINGS; WADDING

PCT No. PCT/GB95/01441 Sec. 371 Date Dec. 20, 1996 Sec. 102(e) Date Dec. 20, 1996 PCT Filed Jun. 19, 1995 PCT Pub. No. WO95/35043 PCT Pub. Date Dec. 28, 1995Cigarette filters are disclosed which comprise entangled continuous filaments of lyocell. The filaments may be entangled for example by hydroentangling a web which comprises one or more layers of lyocell filaments in spread tow form or by directing radial or circumferential water jets at a tow of lyocell filaments in rod form.