EP 0861036 B1 2000-01-12 - METHOD FOR THE MANUFACTURE OF BIODEGRADABLE FILTER MATERIAL
Title (en)
METHOD FOR THE MANUFACTURE OF BIODEGRADABLE FILTER MATERIAL
Title (de)
VERFAHREN ZUR HERSTELLUNG VON BIOLOGISCH ABBAUBAREM FILTERMATERIAL
Title (fr)
PROCEDE DE FABRICATION DE MATERIAU DE FILTRE BIODEGRADABLE
Publication
Application
Priority
- DE 19536505 A
- EP 9604234 W
Abstract (en)
[origin: DE19536505A1] The invention concerns a biodegradable filter tow or filter material (1) of renewable raw materials for use as tobacco filter elements for cigarettes, cigars or pipes, as well as a process for its manufacture. Fibres, foils or foams produced in an extrusion process and consisting of biopolymers based on thermoplastic starch and their polymer mixture are processed to form the filter tow or filter material according to the invention. The advantages of the invention reside in the use of biodegradability of the natural biopolymer filter material, a pollutant-reducing aroma-enhancing filter effect and an economical manufacturing method.
IPC 1-7 (main, further and additional classification)
IPC 8 full level (invention and additional information)
A24D 3/02 (2006.01); A24D 3/08 (2006.01); B29C 47/00 (2006.01); B29C 47/30 (2006.01); B29C 55/28 (2006.01); B29C 67/24 (2006.01); C08J 9/00 (2006.01); C08L 101/16 (2006.01); B29K 96/00 (2006.01); B29L 31/14 (2006.01)
CPC (invention and additional information)
A24D 3/068 (2013.01); A24D 3/08 (2013.01); Y10S 264/48 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
EPO simple patent family
DE 19536505 A1 19970410; AR 003751 A1 19980909; AT 188599 T 20000115; AU 696205 B2 19980903; AU 7215996 A 19970428; BR 9611208 A 19990406; CA 2233368 A1 19970410; CA 2233368 C 20001205; CN 1113618 C 20030709; CN 1198080 A 19981104; CO 4750781 A1 19990331; EP 0861036 A1 19980902; EP 0861036 B1 20000112; ES 2141539 T3 20000316; GR 3032900 T3 20000731; ID 18221 A 19980319; JP 3266272 B2 20020318; JP H11500629 A 19990119; KR 100261855 B1 20000801; PL 180599 B1 20010330; PL 325968 A1 19980817; PT 861036 E 20000630; RU 2153828 C2 20000810; TR 199800561 T1 19980622; TW 546125 B 20030811; US 6062228 A 20000516; WO 9712528 A1 19970410; ZA 9608199 B 19970502
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2000-01-12 [REF] CORRESPONDS TO:
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1999-06-16 [RAP1] TRANSFER OF RIGHTS OF AN APPLICATION
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