SK9862002A3 - Method for producing an acidified filter for tobacco products and the use thereof - Google Patents
Method for producing an acidified filter for tobacco products and the use thereof Download PDFInfo
- Publication number
- SK9862002A3 SK9862002A3 SK986-2002A SK9862002A SK9862002A3 SK 9862002 A3 SK9862002 A3 SK 9862002A3 SK 9862002 A SK9862002 A SK 9862002A SK 9862002 A3 SK9862002 A3 SK 9862002A3
- Authority
- SK
- Slovakia
- Prior art keywords
- acid
- filter
- filter material
- salts
- acidified
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 235000019505 tobacco product Nutrition 0.000 title claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 24
- 150000003839 salts Chemical class 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 22
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 16
- -1 methyl- Chemical group 0.000 claims abstract description 12
- 239000002904 solvent Substances 0.000 claims abstract description 11
- 150000007513 acids Chemical class 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 230000001476 alcoholic effect Effects 0.000 claims abstract description 5
- 150000001261 hydroxy acids Chemical class 0.000 claims abstract description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims abstract description 3
- 230000000391 smoking effect Effects 0.000 claims abstract description 3
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 16
- 239000001630 malic acid Substances 0.000 claims description 16
- 235000011090 malic acid Nutrition 0.000 claims description 16
- 239000002535 acidifier Substances 0.000 claims description 15
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 13
- 239000004848 polyfunctional curative Substances 0.000 claims description 13
- 150000001733 carboxylic acid esters Chemical class 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 230000002378 acidificating effect Effects 0.000 claims description 8
- 235000013773 glyceryl triacetate Nutrition 0.000 claims description 7
- 229960002622 triacetin Drugs 0.000 claims description 7
- 235000019506 cigar Nutrition 0.000 claims description 6
- 229920002301 cellulose acetate Polymers 0.000 claims description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 4
- OVOUKWFJRHALDD-UHFFFAOYSA-N 2-[2-(2-acetyloxyethoxy)ethoxy]ethyl acetate Chemical compound CC(=O)OCCOCCOCCOC(C)=O OVOUKWFJRHALDD-UHFFFAOYSA-N 0.000 claims description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- 150000001242 acetic acid derivatives Chemical class 0.000 claims description 3
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 3
- 235000015165 citric acid Nutrition 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical class CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 2
- 150000001447 alkali salts Chemical class 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims description 2
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 claims description 2
- 125000002843 carboxylic acid group Chemical group 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 159000000001 potassium salts Chemical class 0.000 claims description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- PPLUPPGMFOKIQT-UHFFFAOYSA-N (3-hydroxy-2-propanoyloxypropyl) propanoate Chemical compound CCC(=O)OCC(CO)OC(=O)CC PPLUPPGMFOKIQT-UHFFFAOYSA-N 0.000 claims 1
- UXDDRFCJKNROTO-UHFFFAOYSA-N Glycerol 1,2-diacetate Chemical compound CC(=O)OCC(CO)OC(C)=O UXDDRFCJKNROTO-UHFFFAOYSA-N 0.000 claims 1
- DOOTYTYQINUNNV-UHFFFAOYSA-N Triethyl citrate Chemical compound CCOC(=O)CC(O)(C(=O)OCC)CC(=O)OCC DOOTYTYQINUNNV-UHFFFAOYSA-N 0.000 claims 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 239000001069 triethyl citrate Substances 0.000 claims 1
- VMYFZRTXGLUXMZ-UHFFFAOYSA-N triethyl citrate Natural products CCOC(=O)C(O)(C(=O)OCC)C(=O)OCC VMYFZRTXGLUXMZ-UHFFFAOYSA-N 0.000 claims 1
- 235000013769 triethyl citrate Nutrition 0.000 claims 1
- 125000003262 carboxylic acid ester group Chemical class [H]C([H])([*:2])OC(=O)C([H])([H])[*:1] 0.000 abstract 2
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 239000001087 glyceryl triacetate Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- QBBTZXBTFYKMKT-UHFFFAOYSA-N 2,3-diacetyloxypropyl acetate Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O.CC(=O)OCC(OC(C)=O)COC(C)=O QBBTZXBTFYKMKT-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- 150000008065 acid anhydrides Chemical class 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- WLJVXDMOQOGPHL-UHFFFAOYSA-N phenylacetic acid Chemical compound OC(=O)CC1=CC=CC=C1 WLJVXDMOQOGPHL-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 235000000346 sugar Nutrition 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- SNICXCGAKADSCV-JTQLQIEISA-N (-)-Nicotine Chemical compound CN1CCC[C@H]1C1=CC=CN=C1 SNICXCGAKADSCV-JTQLQIEISA-N 0.000 description 1
- WBYWAXJHAXSJNI-VOTSOKGWSA-M .beta-Phenylacrylic acid Natural products [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 1
- VXRUADVCBZMFSV-UHFFFAOYSA-N 2-acetyloxypropane-1,2,3-tricarboxylic acid Chemical class CC(=O)OC(CC(O)=O)(CC(O)=O)C(O)=O VXRUADVCBZMFSV-UHFFFAOYSA-N 0.000 description 1
- OLSDAJRAVOVKLG-UHFFFAOYSA-N 3-hydroxymandelic acid Chemical compound OC(=O)C(O)C1=CC=CC(O)=C1 OLSDAJRAVOVKLG-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- WBYWAXJHAXSJNI-SREVYHEPSA-N Cinnamic acid Chemical compound OC(=O)\C=C/C1=CC=CC=C1 WBYWAXJHAXSJNI-SREVYHEPSA-N 0.000 description 1
- WPIAUXYXWXEIMF-UHFFFAOYSA-N O1C(=O)C=CC2=CC=CC=C12.OC1=C(C=CC(=O)O)C=CC=C1 Chemical compound O1C(=O)C=CC2=CC=CC=C12.OC1=C(C=CC(=O)O)C=CC=C1 WPIAUXYXWXEIMF-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920006221 acetate fiber Polymers 0.000 description 1
- 229940095602 acidifiers Drugs 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 235000013985 cinnamic acid Nutrition 0.000 description 1
- 229930016911 cinnamic acid Natural products 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229940093915 gynecological organic acid Drugs 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- 229960002715 nicotine Drugs 0.000 description 1
- SNICXCGAKADSCV-UHFFFAOYSA-N nicotine Natural products CN1CCCC1C1=CC=CN=C1 SNICXCGAKADSCV-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003279 phenylacetic acid Substances 0.000 description 1
- 229960003424 phenylacetic acid Drugs 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
- A24D3/0212—Applying additives to filter materials
- A24D3/022—Applying additives to filter materials with liquid additives, e.g. application of plasticisers
Abstract
Description
Oblasť techniky ' 1Technical Field 1
Tento vynález sa týka spôsobu výroby okysleného filtra pre tabakové výrobky impregnáciou vláknitého alebo plochého filtračného materiálu podľa úvodnej časti hlavného nároku, a použitia takých filtrov pre cigaretové dutinky, cigarety, cigary alebo krátke cigary, fajky a cigaretové špičky.The present invention relates to a method of manufacturing an acidified filter for tobacco products by impregnating a fibrous or flat filter material according to the preamble of the main claim, and the use of such filters for cigarette tubes, cigarettes, cigars or short cigars, pipes and cigarette tips.
Doterajší stav technikyBACKGROUND OF THE INVENTION
Z patentovej prihlášky DE 16 92 895 Al je známy spôsob úpravy filtračných materiálov pre tabakové výrobky na zlepšenie absorpcie zásaditých zložiek tabakového dymu a nikotínu kyslými zložkami, ktorý sa spoločne s glyceroltriacetátom (triacetínom) stužujúcim filter pridávajú k prameňu z acetátu celulózy. Okyslovacie prípravky v patente uvádzané a používané pri výrobe okyslených filtrov sú síce fyziologicky a organolepticky prijateľné, ale v triacetíne používanom ako tvrdiaca prísada pre ester karboxylovej kyseliny sa rozpúšťajú len v malej miere a/alebo len pri vyšších teplotách 100 až 130 °C. Z toho vyplýva nevýhoda, že rovnomerná a tiež súčasná impregnácia filtrov jednak kyslou zložkou, jednak tvrdiacou zložkou prebieha problematicky.DE 16 92 895 A1 discloses a method for treating filter materials for tobacco products to improve the absorption of the basic constituents of tobacco smoke and nicotine by acidic constituents, which together with the filter reinforcing glycerol triacetate (triacetin) are added to the cellulose acetate strand. While the acidifying compositions disclosed and used in the manufacture of acidified filters are physiologically and organoleptically acceptable, they dissolve to a limited extent and / or only at higher temperatures of 100 to 130 ° C in the triacetin used as a hardener for the carboxylic ester. This results in the disadvantage that the uniform and also simultaneous impregnation of the filters with both the acid component and the hardener component is problematic.
Z tohto dôvodu sa používajú podľa patentu DE 13 00 854 Cl organické okyslovacie prípravky na báze esterov kyselín ako je kyselina citrónová, kyselina vínna, kyselina jantárová, kyselina jablčná a kyselina cukrová, ktoré sa po rozpustení v glycerol-triacetáte môžu jemne distribuovať na vláknach filtračného materiálu. Nevýhodou tohto spôsobu však je, že estery týchto polykarboxylových kyselín vykazujú len malú schopnosť zadržovať bázické zložky dymu, pretože reaktívne karboxylové skupiny sú v tomto prípade esterifikované a preto už nie sú k dispozícii pre selektívnu retenciu zásaditých zložiek dymu.Accordingly, according to DE 13 00 854 C1, organic acid esters based on acid esters such as citric acid, tartaric acid, succinic acid, malic acid and sugar acid are used, which can be finely distributed on the filter fibers after dissolution in glycerol triacetate. material. The disadvantage of this process, however, is that the esters of these polycarboxylic acids exhibit little ability to retain the basic constituents of the smoke, since the reactive carboxyl groups in this case are esterified and are therefore no longer available for selective retention of the basic constituents of the smoke.
Pri inom spôsobe (DE 38 20 089 C2) sa anhydridy zodpovedajúcich dialebo polykarboxylových kyselín rozpúšťajú v esteroch karboxylových kyselín používaných ako tvrdiace prísady filtrov, a tieto anhydridy kyselín po nastriekaní na vlákna filtrov hydrolyzujú. Nevýhodou tohto spôsobu je predovšetkým veľmi zložitá a preto nákladná výroba anhydridov kyselín a po druhé nestálosť rozpustených anhydridov, ktoré hydrolyzujú už aj účinkom stôp vody v použitom rozpúšťadle alebo vplyvom vlhkosti a vytvárajú zodpovedajúce kyseliny, ktoré z rozpúšťadla vypadávajú vo forme kryštálov.In another method (DE 38 20 089 C2), the anhydrides of the corresponding dialkyl or polycarboxylic acids are dissolved in the carboxylic acid esters used as filter curing agents, and these acid anhydrides are hydrolyzed after spraying onto the filter fibers. The disadvantage of this process is, in particular, the very complex and therefore expensive production of acid anhydrides and, secondly, the volatility of the dissolved anhydrides, which hydrolyze either by traces of water in the solvent used or by moisture and produce corresponding acids which fall out of the solvent in the form of crystals.
Pri iných známych spôsoboch sa di- a polykarboxylové kyseliny pri výrobe filtra aplikujú dávkovacím zariadením vo forme veľmi jemných častíc buď priamo (EP 09 13 100 A2) na prameň filtračného materiálu alebo sa (podľa DE 39 04 239 Cl) tieto veľmi jemné častice suspendujú v organickom kvapalnom prostredí a na filtračný materiál sa aplikuje výsledná suspenzia. V týchto prípadoch je však výroba malých častíc mikronizáciou extrémne nákladná, navyše sa musí stroj na výrobu filtrov vybaviť dávkovacím zariadením alebo používané suspenzie sa vyznačujú nestálosťou, takže sa časom na dne usadzuje pevná fáza v jemných časticiach.In other known processes, di- and polycarboxylic acids are applied in the form of very fine particles by means of a dispensing device in the form of very fine particles either directly (EP 09 13 100 A2) to the filter material strand or (according to DE 39 04 239 C1) these very fine particles are suspended in an organic liquid medium and the resulting suspension is applied to the filter material. In these cases, however, the production of small particles by micronization is extremely costly; moreover, the filter machine must be equipped with a dosing device or the suspensions used are unstable, so that the solid phase in the fine particles settles over time.
Až doteraz nie je známy žiaden spôsob aplikácie pevných organických kyselín alebo ich kyslých solí rozpustených v bežne používaných tvrdiacich prísadách pre filtre umožňujúce štandardné úsporné spôsoby výroby filtrov.To date, no method of applying solid organic acids or their acid salts dissolved in commonly used filter curing agents is known, allowing standard cost-saving methods of filter production.
Cieľom tohto vynálezu je navrhnúť spôsob výroby okysleného filtra pre tabakové výrobky, v ktorom by sa mohli okyslovacie prípravky, kryštalické pri teplote prostredia a pri výrobnej teplote, alebo ich kyslé soli, rozpustiť spolu s organickým rozpúšťadlom použitým ako tvrdiaca prísada pre filtre, ako je tvrdiaca prísada na báze esteru karboxylovej kyseliny tak, aby sa získaný číry roztok mohol bežným spôsobom aplikovať na filter.It is an object of the present invention to provide a process for the manufacture of an acidified filter for tobacco products in which acidifying agents, crystalline at ambient and process temperature, or acid salts thereof, can be dissolved together with an organic solvent used as filter curing agent such as a curing agent. a carboxylic acid ester additive so that the clear solution obtained can be applied to the filter in a conventional manner.
Podstata vynálezuSUMMARY OF THE INVENTION
Na dosiahnutie tohto cieľa sa na základe patentu DE 39 04 239 Cl navrhuje spôsob na výrobu okysleného filtra pre tabakové výrobky impregnáciou vláknitého alebo plochého filtračného materiáluTo achieve this, a method for producing an acidified filter for tobacco products by impregnating a fibrous or flat filter material is proposed on the basis of DE 39 04 239 C1
II
a) fyziologicky a organolepticky prijateľnými mono-, di- alebo polykärboxylovými kyselinami alebo hydroxykyselinami s maximálne 8 uhlíkovými atómami a 2 až 3 karboxylovými skupinami (okyslovacie prísady) alebo ich kyslými soľami a(a) physiologically and organoleptically acceptable mono-, di- or polycarboxylic acids or hydroxy acids having a maximum of 8 carbon atoms and 2 to 3 carboxylic acid groups (acidifying agents) or their acid salts; and
b) tvrdiacou prísadou na báze esteru karboxylovej kyseliny, vyznačujúci sa tým, že sa uvedené okyslovacie prípravky alebo ich kyslé soli a tvrdiaca prísada na báze esteru karboxylovej kyseliny rozpustia prídavkom alkoholického solubilizátora zo skupiny metyl-, etyl-, propyl-, izopropyl-, butyla izobutylalkoholov alebo ich zmesami, a takto získaný roztok sa aplikuje na filtračný materiál.(b) a carboxylic acid ester hardener, characterized in that said acidifying compositions or acid salts thereof and the carboxylic acid ester hardener are dissolved by the addition of an alcoholic solubilizer from the group methyl, ethyl, propyl, isopropyl, butyl isobutyl alcohols or mixtures thereof, and the solution thus obtained is applied to the filter material.
V porovnaní so známymi spôsobmi má spôsob podľa vynálezu nasledujúce prekvapivé prednosti:Compared to the known processes, the process according to the invention has the following surprising advantages:
- Distribúcia okyslovacích činidiel alebo ich kyslých solí na vláknach filtra je veľmi jemná a rovnomerná, takže sa docieľuje mimoriadne vysoká účinnosť.- The distribution of the acidifying agents or their acid salts on the filter fibers is very fine and uniform, so that an extremely high efficiency is achieved.
- Aplikácia okyslovacích prípravkov alebo ich kyslých solí nevyžaduje pri výrobe filtra žiadne špeciálne opatrenia. Úpravy strojov nie sú nutné a kritická stabilita ani homogenita použitého roztoku v žiadnom prípade neobmedzuje spracovateľnosť a technologickú uskutočniteľnosť.- The application of acidifying agents or their acid salts does not require any special precautions in the manufacture of the filter. Modifications of the machines are not necessary and the critical stability or homogeneity of the solution used in no way limits the processability and technological feasibility.
- Spôsob umožňuje použitie lacných surovín, pretože na prípravu potrebného roztoku možno použiť štandardné výrobky bez nákladných predbežných úprav typu mikronizácia alebo rozpustenie pri teplotách nad 100 °C.The method allows the use of inexpensive raw materials, since standard products can be used to prepare the necessary solution without costly pretreatment such as micronization or dissolution at temperatures above 100 ° C.
Všeobecne možno použiť všetky bežné estery, tu označované termínom tvrdiace prísady na báze esterov karboxylovej kyseliny, ako činidlá vystužujúce filtre, ako sa opisuje v DE 39 04 239 Cl. Obzvlášť sú vhodné glyceroí-triacetát (triacetín), polyetylénglykol-acetáty alebo -propionáty a najvýhodnejší je trietylénglykol-diacetát (TEGDA).In general, all conventional esters, hereinafter referred to as carboxylic acid ester hardeners, can be used as filter reinforcing agents as described in DE 39 04 239 C1. Glycerol triacetate (triacetin), polyethylene glycol acetates or propionates are particularly suitable, and triethylene glycol diacetate (TEGDA) is most preferred.
Je výhodné, keď sa roztok pripravený z okyslovacích prípravkov alebo ich kyslých solí, tvrdiacej prísady na báze esteru karboxylovej kyseliny a alkoholického solubilizátora použije na filtračný materiál vytvorený vláknami alebo sieťami acetátu celulózy, celulózy, polyetylénu alebo polypropylénu.It is preferred that the solution prepared from the acidic preparations or acid salts thereof, the carboxylic acid ester hardener and the alcohol solubilizer is used for filtering material formed by fibers or networks of cellulose acetate, cellulose, polyethylene or polypropylene.
Ako okyslovacie prípravky sa výhodne používajú kyselina maleínová, kyselina jantárová, kyselina glutárová, kyselina vínna, kyselina jablčná, kyselina citrónová a/alebo kyselina acetylcitrónová, alebo ich kyslé soli, pričom kyslé soli predstavujú obzvlášť kyslé alkalické soli, s výhodou draselné soli, alebo amónne soli.Preferred acidifiers are maleic acid, succinic acid, glutaric acid, tartaric acid, malic acid, citric acid and / or acetylcitric acid, or acid salts thereof, the acid salts being particularly acidic alkali salts, preferably potassium salts or ammonium salts. salt.
Ďalšie okyslovacie prípravky, ktoré možno použiť podľa tohto vynálezu, sú:Other acidifying agents which can be used according to the invention are:
1) zo skupiny hydroxykyselín glykolová kyselina, mliečna kyselina, cukrová kyselina, 3-hydroxymandľová kyselina, salicylová kyselina, 2-hydroxyškoricová kyselina (kumarín) a askorbová kyselina alebo(1) from the group of hydroxy acids, glycolic acid, lactic acid, sugar acid, 3-hydroxymandelic acid, salicylic acid, 2-hydroxycinnamic acid (coumarin) and ascorbic acid; or
2) zo skupiny dikarboxylových kyselín šťaveľová kyselina, malónová kyselina, adipová kyselina, pimelová kyselina, korková kyselina a kyselina ftalová rovnako ako2) from the group of dicarboxylic acids oxalic acid, malonic acid, adipic acid, pimelic acid, corkic acid and phthalic acid as well as
3) zo skupiny monokarboxylových kyselín kyselina škoricová, fenyloctová kyselina a benzoová kyselina.3) from the group of monocarboxylic acids cinnamic acid, phenylacetic acid and benzoic acid.
Alkoholy používané podľa vynálezu ako solubilizátory majú dobrú rozpúšťaciu schopnosť pre polykarboxylové kyseliny alebo pre ich soli. Obzvlášť výhodný je etanol, pretože je obzvlášť vhodný ako solubilizátor a malé množstvá postačujú na rozpustenie okyslovacích prípravkov napríklad v glyceroltriacetáte (triacetín) a pretože sa etanol v tabakovom priemysle bežne používa. Okrem toho vykazuje zlepšenú rozpustnosť pre vlákna z acetátu celulózy, takže príslušné filtre z acetátu celulózy tvrdnú rýchlejšie.The alcohols used as solubilizers of the invention have good solubility for polycarboxylic acids or for their salts. Ethanol is particularly preferred because it is particularly suitable as a solubilizer and small amounts are sufficient to dissolve the acidifying agents in, for example, glycerol triacetate (triacetin) and because ethanol is commonly used in the tobacco industry. In addition, it exhibits improved solubility for cellulose acetate fibers, so that the respective cellulose acetate filters harden more quickly.
Pri spôsobe podľa vynálezu je výhodné postupovať tak, že sa okyslovacie činidlá alebo ich kyslé soli v roztoku používajú v koncentrácii 1 až 20 % hmotn. a alkoholické solubilizátory v množstve 0,1 až 10 % hmotn. a najmä v množstve 4 až 8 % hmotn. z celkového množstva roztoku. Je výhodné nastaviť koncentráciu okyslovacích prípravkov alebo ich kyslých solí v roztoku tvrdiacej prísady na báze esteru karboxylovej kyseliny a alkoholického solubilizátora tak, aby pri aplikácii roztoku bola 0,1 až 5 % hmotn. z hmotnosti vláken, ešte výhodnejšie 0,5 až 2 % hmotn.In the process according to the invention, it is advantageous to use the acidifying agents or their acid salts in solution in a concentration of 1 to 20% by weight. and alcoholic solubilizers in an amount of 0.1 to 10 wt. % and in particular in an amount of 4 to 8 wt. of the total amount of solution. It is preferred to adjust the concentration of the acidic preparations or their acid salts in the solution of the carboxylic acid ester hardener and the alcohol solubilizer so that when the solution is applied, it is 0.1 to 5% by weight. % by weight of the fibers, more preferably 0.5 to 2 wt.
Okyslené filtre získané podľa vynálezu alebo okyslený filtračný materiál sa môže používať ako filtračná upchávka alebo jej časť pre cigaretové dutinky, rovnako ako v tvare tyčiniek ako filter pre fajčiarske potreby ako sú fajky alebo cigaretové špičky. Obzvlášť výhodné je použitie tohto filtračného materiálu získaného podľa vynálezu ako filtračná upchávka alebo jej časť pre cigaretu, cigaru alebo krátku cigaru (cigarillo), pričom obsah okyslovacích prípravkov alebo ich kyslých solí vo filtračnom materiáli je 0,1 až 10 mg na cigaretu alebo krátku cigaru.The acidic filters obtained according to the invention or the acidic filter material can be used as a filter plug or part thereof for cigarette tubes, as well as in the form of sticks as a filter for smoking articles such as pipes or cigarette tips. It is particularly preferred to use the filter material obtained according to the invention as a filter plug or part thereof for a cigarette, a cigar or a cigarillo, wherein the content of the acidifying agents or their acid salts in the filter material is 0.1 to 10 mg per cigarette or short cigar. .
Ďalej sa vynález podrobnejšie vysvetľuje pomocou príkladov uskutočnenia:Hereinafter, the invention is explained in more detail by way of examples:
Príklady uskutočnenia vynálezuDETAILED DESCRIPTION OF THE INVENTION
PRÍKLAD 1EXAMPLE 1
Pri výrobe acetátového filtra obsahujúceho 0,5 % hmotn. jablčnej kyseliny sa použil filter v tvare tyčinky s rozmermi: dĺžka 126 mm, čo zodpovedá šesťnásobnej dĺžke filtra, a priemer 7,83 mm. Tento acetátový filter mal denier jednotlivého vlákna 2,5y a celkový denier všetkých vláken 35,000 hc (vysoko skučeravený) s poklesom tlaku 405 mm vodného stĺpca. Hmotnosť acetátu sa určila ako 638 mg, to znamená že bolo treba nastriekať 3,19 mg jablčnej kyseliny alebo 0,53 mg na jednu cigaretu. Ako tvrdiaca zložka sa použilo 57 mg triacetí nu. Pri príprave roztoku triacetínu a kyseliny jablčnej sa 15 minút intenzívne miešalo 5,6 kg kyseliny jablčnej a 100 kg triacetínu v nádobe z nerezovej ocele kapacity asi 200 1. Výsledkom bolo, že sa kyselina jablčná z časti rozpustila, z časti jemne dispergovala. Potom sa pridali 4 kg etanolu pre úplnú solubilizáciu, takže po ďalších 20 minútach ďalšieho miešania sa jablčná kyselina úplne rozpustila.In the manufacture of an acetate filter containing 0.5 wt. a malic acid filter was used in the form of a rod having the dimensions: length 126 mm, corresponding to six times the length of the filter, and a diameter of 7.83 mm. This acetate filter had a single fiber denier of 2.5y and a total fiber denier of 35,000 hc (highly squeezed) with a pressure drop of 405mm water column. The acetate weight was determined to be 638 mg, i.e. 3.19 mg malic acid or 0.53 mg per cigarette had to be injected. As hardening component, 57 mg of triacetone was used. To prepare a solution of triacetin and malic acid, 5.6 kg of malic acid and 100 kg of triacetin were stirred vigorously in a 200 L stainless steel vessel for 15 minutes. As a result, malic acid was partially dissolved, partially finely dispersed. 4 kg of ethanol were then added to completely solubilize, so that after a further 20 minutes of stirring, malic acid was completely dissolved.
Množstvo roztoku nastriekaného na filter sa vopred stanovilo na 60,2 mg roztoku na jeden filter v tvare tyčinky. Alkohol sa nepočítal, pretože sa úplne odparí počas výroby alebo po nej. Jablčná kyselina neovplyvňovala fyzikálne parametre ako je napríklad kapilarita a tvrdosť.The amount of solution sprayed onto the filter was pre-determined to be 60.2 mg of solution per rod-shaped filter. Alcohol was not counted as it evaporates completely during or after production. Malic acid did not affect physical parameters such as capillarity and hardness.
PRÍKLAD 2EXAMPLE 2
Pri výrobe filtra v tvare tyčinky obsahujúceho 2,5 % kyseliny jablčnej sa použil filter v tvare tyčinky dĺžky 100 mm, to znamená štvornásobku dĺžky normálnej filtračnej upchávky a priemeru 7,85 mm, z acetátových vláken a s denier jednotlivého vlákna 2,1y a denier všetkých vláken 33,000 ssc (supersilno skučeravené), vykazujúci pokles tlaku 415 mm vodného stĺpca. V tomto prípade bola hmotnosť acetátu 531 mg, to znamená, že sa naňho nastriekalo 13,275 mg kyseliny jablčnej, to jest 3,3 mg jablčnej kyseliny na cigaretu. Vo funkcii tvrdiacej prísady sa použilo 45 mg triacetínu na filter v tvare tyčinky.In the manufacture of a bar-shaped filter containing 2.5% malic acid, a bar-shaped filter having a length of 100 mm, i.e. four times the length of a normal filter plug and a diameter of 7.85 mm, of acetate fibers and single fiber denies of 2.1y and denier of all fibers of 33,000 ssc (superfluous), showing a pressure drop of 415 mm water column. In this case, the weight of the acetate was 531 mg, i.e. 13.275 mg of malic acid, i.e. 3.3 mg of malic acid, were sprayed onto it per cigarette. As hardener, 45 mg of triacetin per bar-shaped filter was used.
Roztok jablčnej kyseliny a tvrdiacej prísady sa pripravil ako v príklade 1, ale použité množstvá boli 29,5 kg kyseliny jablčnej a 100 kg triacetínu. Množstvo etanolu pridaného asi po 15 minútach bolo v tomto prípade 8 kg a za účelom lepšieho a rýchlejšieho rozpustenia sa zmes zahriala na 35 °C. Finálny roztok bol stabilný. Tu použité množstvo bolo 58,3 mg roztoku na filter v tvare tyčinky.A solution of malic acid and hardener was prepared as in Example 1, but the amounts used were 29.5 kg malic acid and 100 kg triacetin. The amount of ethanol added after about 15 minutes in this case was 8 kg and the mixture was heated to 35 ° C for better and faster dissolution. The final solution was stable. The amount used here was 58.3 mg of rod-shaped filter solution.
Pokiaľ sa použijú roztoky obsahujúce viac než 10 % kyseliny jablčnej, odporúča sa v záujme lepšej distribúcie roztoku na vláknach zvýšiť rýchlosť kief v bežnom nastrekovacom zariadení stroja KDF3 na výrobu filtrov v tvare tyčinky.If solutions containing more than 10% malic acid are used, it is recommended to increase the brush speed in a conventional KDF3 spray machine for the production of rod-shaped filters in order to better distribute the solution on the fibers.
Claims (11)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10000519A DE10000519C5 (en) | 2000-01-08 | 2000-01-08 | Process for the production of an acidified filter for tobacco products and their use |
| PCT/EP2001/000072 WO2001050892A1 (en) | 2000-01-08 | 2001-01-05 | Method for producing an acidified filter for tobacco products and the use thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SK9862002A3 true SK9862002A3 (en) | 2002-11-06 |
Family
ID=7626982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SK986-2002A SK9862002A3 (en) | 2000-01-08 | 2001-01-05 | Method for producing an acidified filter for tobacco products and the use thereof |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP1244365B1 (en) |
| AT (1) | ATE238704T1 (en) |
| AU (1) | AU3166201A (en) |
| CZ (1) | CZ20022388A3 (en) |
| DE (2) | DE10000519C5 (en) |
| HU (1) | HUP0204227A3 (en) |
| PL (1) | PL356296A1 (en) |
| RU (1) | RU2002121165A (en) |
| SK (1) | SK9862002A3 (en) |
| WO (1) | WO2001050892A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102599651B (en) * | 2010-12-13 | 2013-07-24 | 河北中烟工业公司 | Preparation method for composite cigarette filter stick capable of reducing harmful components of cigarette |
| CN103126074B (en) * | 2013-03-05 | 2014-08-20 | 湖南中烟工业有限责任公司 | Paper filter stick core base material additive capable of reducing phenolic compound in main cigarette stream smoke and application |
| CN103126075B (en) * | 2013-03-05 | 2014-08-06 | 湖南中烟工业有限责任公司 | Filter stick fiber base material additive capable of reducing phenolic compound in main cigarette stream smoke and application of filter stick fiber base material additive |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1692895A1 (en) * | 1966-08-31 | 1972-05-18 | Brinkmann Ag M | Acid-containing tobacco smoke filter body made of cellulose acetate and process for its manufacture |
| IT1050104B (en) * | 1969-01-17 | 1981-03-10 | Spa Soc Spa | FILTER FOR CIGARETTES PIPA AND SIMILAR BASED ON LYSOZYME POLYPEPTIDES OR BASIC PROTEINS AND THEIR DERIVATIVES |
| DE1965757A1 (en) * | 1969-12-31 | 1971-07-08 | Chemfilt Corp | Reduction of carcinogens in tobacco smoke - cmpn alteration process and equipment |
| US5038803A (en) * | 1988-02-04 | 1991-08-13 | Hercules Incorporated | Method and device for control of by-products from cigarette smoke |
| DE3820089A1 (en) * | 1988-06-13 | 1989-12-14 | Bat Cigarettenfab Gmbh | METHOD FOR IMPREGNATING FIBERS OF A TOBACCO FUEL FILTER WITH DI- OR POLYCARBONIC ACIDS OR. ANHYDRIDES THERE |
| US5009239A (en) * | 1988-12-20 | 1991-04-23 | Hoechst Celanese Corporation | Selective delivery and retention of aldehyde and nicotine by-product from cigarette smoke |
| DE3904239C1 (en) * | 1989-02-13 | 1990-05-17 | B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De | |
| US5161549A (en) * | 1990-03-20 | 1992-11-10 | Regional Research & Development Corporation | Pure clean cigarette filter |
| WO1992005713A1 (en) * | 1990-10-04 | 1992-04-16 | Eastman Kodak Company | A combination for improved delivery of tobacco modifying agents |
-
2000
- 2000-01-08 DE DE10000519A patent/DE10000519C5/en not_active Expired - Fee Related
-
2001
- 2001-01-05 HU HU0204227A patent/HUP0204227A3/en unknown
- 2001-01-05 DE DE50100217T patent/DE50100217D1/en not_active Expired - Lifetime
- 2001-01-05 AT AT01903622T patent/ATE238704T1/en not_active IP Right Cessation
- 2001-01-05 RU RU2002121165/12A patent/RU2002121165A/en not_active Application Discontinuation
- 2001-01-05 CZ CZ20022388A patent/CZ20022388A3/en unknown
- 2001-01-05 EP EP01903622A patent/EP1244365B1/en not_active Expired - Lifetime
- 2001-01-05 SK SK986-2002A patent/SK9862002A3/en unknown
- 2001-01-05 WO PCT/EP2001/000072 patent/WO2001050892A1/en not_active Application Discontinuation
- 2001-01-05 PL PL01356296A patent/PL356296A1/en unknown
- 2001-01-05 AU AU31662/01A patent/AU3166201A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| PL356296A1 (en) | 2004-06-28 |
| DE10000519A1 (en) | 2001-07-26 |
| ATE238704T1 (en) | 2003-05-15 |
| DE50100217D1 (en) | 2003-06-05 |
| CZ20022388A3 (en) | 2002-11-13 |
| RU2002121165A (en) | 2004-03-20 |
| WO2001050892A1 (en) | 2001-07-19 |
| EP1244365B1 (en) | 2003-05-02 |
| HUP0204227A2 (en) | 2003-04-28 |
| AU3166201A (en) | 2001-07-24 |
| EP1244365A1 (en) | 2002-10-02 |
| DE10000519C2 (en) | 2002-02-28 |
| DE10000519C5 (en) | 2004-12-02 |
| HUP0204227A3 (en) | 2003-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3424172A (en) | Cigarette filters | |
| US5150721A (en) | Tobacco smoke filter material and process for production thereof | |
| JP2813859B2 (en) | Filter tow and method for producing the same, and tobacco smoking filter element and method for producing the same | |
| US3344796A (en) | Flavored tobacco smoke filter containing higher fatty acid ester of sucrose | |
| US4007746A (en) | Method for preparing cellulose acetate fiber rods | |
| US4153064A (en) | Cigarette filters | |
| EP0632968A2 (en) | Filtertow and process for its manufacture and tobacco smoke filter and process for its manufacture | |
| US5052415A (en) | Process for the impregnation of fibers of a tobacco smoke filter with dicarboxylic or polycarboxylic acids or anhydrides thereof | |
| SK9862002A3 (en) | Method for producing an acidified filter for tobacco products and the use thereof | |
| JPH05115274A (en) | Manufacture of tabacco filter with tabacco flavor | |
| US3285255A (en) | Polyolefin filter | |
| US4194517A (en) | Filter for cigarettes, cigarillos or pipes | |
| DE2341685C3 (en) | Cellulose acetate fiber cigarette filters and process for their manufacture | |
| US5141006A (en) | Tobacco smoke filter material and process for production thereof | |
| US3272638A (en) | Method for increasing the spinning rate of cellulose organic acid ester filaments | |
| EP0383018B1 (en) | Process for impregnating tobacco smoke filter fibres with polycarboxylic acid or salts thereof | |
| US3890983A (en) | Method for preparing cigarette filter | |
| US3882878A (en) | Method for preparing cigarette filter of cellulose acetate fibers | |
| US3443566A (en) | Cigarette filters employing sugar esters | |
| DE19822775A1 (en) | Process for the production of hardened filter rods in the cigarette industry | |
| JPH0948801A (en) | Cellulose ester subsance, its production and filter using the same | |
| AT258773B (en) | Process for the manufacture of filters for cigarettes | |
| DE2362701C3 (en) | Cigarette filters and process for their manufacture | |
| GB1597105A (en) | Smoking product | |
| DE1004986B (en) | Filter body for detoxifying tobacco smoke |