HRP20000418A2

HRP20000418A2 - Biodegradable cigarette filter

Info

Publication number: HRP20000418A2
Application number: HR20000418A
Authority: HR
Inventors: Paul Georg Henning
Original assignee: Reemtsma H F & Ph
Priority date: 1997-11-21
Filing date: 2000-06-21
Publication date: 2000-08-31
Also published as: CN1130135C; HUP0100392A3; YU49407B; WO1999026497A1; AU1667699A; PL340593A1; NO309354B1; BG104547A; DK1032283T3; CZ20001829A3; EA001997B1; EE200000268A; TR200001454T2; NO20002516L; JP2001523479A; EP1032283B1; ATE225134T1; PT1032283E; ID25459A; KR20010032330A

Abstract

The invention relates to a filter cigarette comprising a biodegradable filter and a tobacco strand surrounded by cigarette paper, a non-woven air-laid cellulose filter with a normal retention capacity and a filter ventilation area extending in a peripheral direction. The inventive filter cigarette has the following combination of features: the filter has a condensate retention capacity of 40-60 %; the non-woven cellulose is non-crimped, the nicotine/tobacco strand condensate yield ratio lies between 0,6 and 0,9 (nicotine *10/condensate), the apparent density of the tobacco mixture of the tobacco strand ranges from 200 to 250mg/ml, the tobacco strand drag is between 45 and 65 mmwWS when measured in an enclosed form, air permeability of the cigarette paper is 20-50 CORESTA units and the filter ventilation degree is 15-50 %.

Description

Ovaj izum odnosi se na biorazgradivi filtar dan preambulom prvog patentnog zahtjeva. This invention relates to the biodegradable filter given in the preamble of the first patent claim.

Takve filtar cigarete opisivane su mnogo puta u prošlosti. No, nedostaci svih prije opisanih filtar cigareta sa biorazgradivim filtrom bio je da su mijenjale okus dima zbog upotrebe različitih prije opisanih materijala i što se sama cigareta uvijek izrađivala od materijala različitog od uobičajenog celuloznog acetata i kao takva bivala odbačena od pušača. Dalji nedostaci, naročito filtra izrađenog od biorazgradive celuloze, također su jasno izraženi kao vidljiva razlika u pojavi samog kraja filtra. U prošlosti, to je značilo da biorazgradivi filtri neće biti prihvaćeni kao monofiltri na tržištu acetatnih filtra. Such filter cigarettes have been described many times in the past. However, the disadvantages of all previously described filter cigarettes with a biodegradable filter were that they changed the taste of the smoke due to the use of different previously described materials and that the cigarette itself was always made of a material different from the usual cellulose acetate and as such was rejected by the smoker. Further disadvantages, especially of the filter made of biodegradable cellulose, are also clearly expressed as a visible difference in the appearance of the very end of the filter. In the past, this meant that biodegradable filters would not be accepted as monofilters in the acetate filter market.

Bit izuma je dakle dobivanje takve filtar cigarete koja posjeduje “tipičan-acetatni” utisak okusa i “tipičnu-acetatnu” optičku pojavu te da sadržava sve ostale prednosi poznatih filtar cigareta. The essence of the invention is to obtain such a filter cigarette that has a "typical-acetate" taste impression and a "typical-acetate" optical appearance, and that contains all the other benefits of known filter cigarettes.

Prema izumu, to se postiže svojstvima danim u karakterističnom dijelu prvog patentnog zahtjeva. According to the invention, this is achieved by the properties given in the characteristic part of the first patent claim.

Odgovarajuće verzije dane su svojstvima navedenim u zavisnim patentnim zahtjevima. Corresponding versions are provided by the features set forth in the dependent claims.

Prednosti koje se postižu samim izumom dobivaju se odabirom posebnih celuloznih materijala i samom izvedbom filtar cigarete strukturirane da se isto postigne podešavanjem osnovnih parametara, točnije filtarskih performansi zadržavanja, odnosa nikotin/kondenzat samog duhanskog smotuljka, gustoće pakiranja duhanske smjese duhanskog smotuljka, zračne permeabilnosti cigaretnog papira i konačno stupnja filtarske ventilacije u smjeru preko cijele strukture koja optimizira utisak okusa s jedne strane i vizualnu privlačnost sa druge. Nikotinski prinos filtar cigarete je do maksimalnih 1 mg i prinos kondenzata od 6 mg do 12 mg. The advantages achieved by the invention itself are obtained by the selection of special cellulosic materials and the very performance of the filter cigarette structured to achieve the same by adjusting the basic parameters, more precisely the filter retention performance, the nicotine/condensate ratio of the tobacco roll itself, the packing density of the tobacco mixture of the tobacco roll, the air permeability of the cigarette paper and finally the level of filter ventilation in the direction over the entire structure that optimizes the impression of taste on the one hand and visual appeal on the other. The nicotine yield of a filter cigarette is up to a maximum of 1 mg and the condensate yield is from 6 mg to 12 mg.

Traženi stupanj ventilacije je od 15 do 50 % i može biti postignut sa korespondirajućom izvedbom ventilacijske zone pokrivnog ovitka i samim ovijanjem. The required degree of ventilation is from 15 to 50% and can be achieved with the corresponding performance of the ventilation zone of the covering cover and the wrapping itself.

Prema najboljem načinu izvođenja, ventilacijska zona filtra se sastoji od dvije serije rupica koje su barem 10 mm daleko od kraja koji je okrenut ustima; rupice mogu biti izrađene laserskim zračenjm ili mehanički na završenoj cigareti i trebaju biti što je moguće manje i ne pretjerano vidljive, dobri rezultati se postižu sa 15 do 25 rupica u dva ventilacijska retka. According to the best embodiment, the ventilation zone of the filter consists of two series of holes at least 10 mm away from the end facing the mouth; the holes can be made by laser radiation or mechanically on the finished cigarette and should be as small as possible and not excessively visible, good results are achieved with 15 to 25 holes in two ventilation lines.

Na iznenađenje, pokazano je da utisak “tipično-acetatnog” okusa i “tipično-acetatne” vizualne privlačnosti se može dostići ako je filtar izrađen iz celuloznog materijala procesiranog uz pomoć tzv. “air-laid” postupka nad pletenom vunastom celuloznom masom, koja se dalje procesira “neprešano” kako bi se dobio sam filtar. U tom postupku, uz odgovarajuće kombinacije površinske težine, debljine i dužine vunaste mase postavljaju se kako bi se dostigle tražene vrijednosti filtarskog otpora uvlačenja i time stupnja zadržavanja. Surprisingly, it was shown that the impression of "typical-acetate" taste and "typical-acetate" visual appeal can be achieved if the filter is made of cellulose material processed with the help of the so-called "air-laid" procedure over knitted woolen cellulose mass, which is further processed "unpressed" to obtain the filter itself. In this process, along with appropriate combinations of surface weight, thickness and length of the woolen mass, they are set in order to reach the required values of the filter's pull-in resistance and thus the degree of retention.

U samom “air-laid” postupku koji je opisan primjerice u US 4,375,447, pripremljena celulozna vlakna nisu suspendirana u vodi kao kod standardnog postupka izrade papira gdje prolazeći ploče koje čine propusna sita na kojima se celuloza kondicionira mlaćenjem i tresenjem čime se vlakna isprepleću jedna sa drugima, već za razliku od spomenutog prolaze maksimalno razdvojena u zračnu struju koja ih prenosi na porozna kontinuirana sita i slaže ih na slučajan način jedna na druga. To daje gotovo voluminiznost pamučne vune koja ne izvodi bilo kakvu mehaničku jačinu ili povezanost samih vlakana. Mehaničko vezanje je prema tome neophodno kako bi se dalje moglo dobiveno i procesirati, a izvodi se dodavanjem veziva kao što su npr. polivinil alkohol, polivinil acetat, polimerni škrob, dekstrin ili lateks. Gustoća mjerena u (g/cm3) i time voluminoznost ili debljina se dalje podešavaju prešanjem. Površinska težina (g/cm2) se kontrolira preko brzine prosijavanja ili uvođenja vlakana u zračnu struju. In the "air-laid" process itself, which is described, for example, in US 4,375,447, the prepared cellulose fibers are not suspended in water as in the standard paper-making process, where passing plates that form permeable screens on which the cellulose is conditioned by beating and shaking, which intertwines the fibers with each other to others, but unlike the one mentioned, they pass maximally separated into the air current which transfers them to porous continuous sieves and stacks them in a random way one on top of the other. This gives almost the voluminousness of cotton wool that does not perform any mechanical strength or connection of the fibers themselves. Mechanical binding is therefore necessary in order to further obtain and process it, and it is performed by adding binders such as polyvinyl alcohol, polyvinyl acetate, polymer starch, dextrin or latex. Density measured in (g/cm3) and thus voluminousness or thickness are further adjusted by pressing. The surface weight (g/cm2) is controlled by the speed of sieving or the introduction of fibers into the air stream.

Izum je pojašnjen u više detalja u slijedećim referencama koje se odnose na opseg izuma. The invention is explained in more detail in the following references relating to the scope of the invention.

Filtar cigareta posjeduje smotuljak duhana zamotan u cigaretni papir i sa filtrom koji je pridružen duhanskom smotuljku. Gustoća pakovanja duhanske smjese je između 200 i 250 mg/ml. Otpornost uvlačenja je između 45 i 65 mm vodenog stupca tlaka, mjereno zatvoreno. A cigarette filter has a roll of tobacco wrapped in cigarette paper and with a filter attached to the roll of tobacco. The packing density of the tobacco mixture is between 200 and 250 mg/ml. The pull-in resistance is between 45 and 65 mm water pressure column, measured closed.

Cigaretni papir posjeduje malu do srednju zračnu permeabilnost u opsegu od 15 do 50 Coresta jedinica. Prinos izražen kao odnos nikotin*10/kondenzat same duhanske smjese treba biti između 0,6 i 0,9. Cigarette paper has low to medium air permeability in the range of 15 to 50 Coresta units. The yield expressed as a ratio of nicotine*10/condensate of the tobacco mixture itself should be between 0.6 and 0.9.

Filtar se sastoji od zajedno-savijenog “ne prešanog” “air-laid” vunastog materijala zamotanog u porozni pokrivni papir. Porozna područja pokrivena su pokrivnim papirom koji obavija omotni papir i služi da pričvrsti filtar za duhanski smotuljak. Zračna permeabilnost poroznih područja pokrivnog papira odabrana je na način da se željeni stupanj filtarske ventilacije postiže i u konjukciji sa omatajućim papirom koji je prije postavljen u donjem sloju. The filter consists of a folded together "not pressed" "air-laid" woolen material wrapped in a porous cover paper. The porous areas are covered with a cover paper that wraps around the wrapping paper and serves to secure the filter to the tobacco roll. The air permeability of the porous areas of the cover paper is chosen in such a way that the desired level of filter ventilation is achieved in conjunction with the wrapping paper that was previously placed in the lower layer.

Testovi sa spomenutim filtrom vodili su u kombinaciji sa odgovarajućim duhanskim smotuljkom na prinos kondenzata od 6 do 12 mg i nikotina do najviše 1mg. Testovi sa iskusnim dugogodišnjim pušačima pokazali su da takva cigareta ne može biti razlučena o cigarete izrađene sa konvencionalnim acetatnim filtrom. Tests with the mentioned filter, in combination with a suitable tobacco roll, resulted in a condensate yield of 6 to 12 mg and nicotine up to a maximum of 1 mg. Tests with experienced long-term smokers showed that such a cigarette cannot be distinguished from cigarettes made with a conventional acetate filter.

Claims

1. Cigarette filter with biodegradable filter with: a) a roll of tobacco wrapped in cigarette paper; b) a filter made of cellulose wool mass made using the "air-laid" process with a "normal" degree of retention; and with c) a filter ventilation zone that extends in a circle; characterized by the fact that a combination of the following properties is obtained: d) the filter has a condensate retention rate of 40 to 60%; e) that the cellulose wool mass is "unpressed"; f) the yield of a tobacco roll expressed as a nicotine/condensate ratio is between 0.6 and 0.9 (nicotine*10/condensate); g) the packing density of the tobacco mixture in the tobacco roll is between 200 and 250 mg/ml; h) the pull-in resistance of the tobacco roll is between 45 and 65 mm water column, measured closed; i) air permeability of cigarette paper is 20 to 50 Coresta units; and j) the degree of filter ventilation is 15 to 50%.

2. Cigarette filter according to claim 1, characterized in that the ventilation zone is formed in combination with a porous cover and covering paper and that it starts at least 10 mm from the end of the mouth side of the filter.

3. Cigarette filter according to claim 1, characterized in that the ventilation zone in the finished cigarette is made mechanically or by laser radiation.

4. Cigarette filter according to claim 2, characterized in that the ventilation zone consists of one or two rows of ventilation openings that are at least 10 mm from the filter mouth end.

5. Cigarette filter according to one of claims 1 to 4, characterized in that the filter consists of "unpressed" cellulose wool mass with a thickness of 0.5 to 1.5 mm.

6. Cigarette filter according to one of claims 1 to 5, characterized in that the filter consists of "unpressed" cellulose mass with a length of 10 to 15 cm.