Europaisches Patentam, European Patent Office 0290 911 j_0)~ Office europ‚en des brevets A2 EUROPEAN PATENT APPLICATION Application number: 88107022-1 (nt C: I A240 1 00 . A2,10 1 02 Q Cate of filing: 02.05.88 (mD Priority: 15.05.87 US 51104 Aoplicanl: FI.J. AEYNOLCS TCBACCO COMPANY Date of publication of application: 401 North Main Street 17.11.88 Bulletin 88146 Winston-Salem North Carolina 27102(US) Oesignated Contracting States: fS lnvenlor~ Perfetti. Thomas Albert AT BE CH OE ES FR GB GR IT LI LU NL SE 2116 Newcastle Drive Winston-Salem North Carolina 27103(US) Inventor: Norman, Alan Benson 8184 Steeplechase Circle Clernmons North Carolina 27012(US) Inveritcr- Dube, Michael Francis 1641 Eagle Crest Drive Pfatftcwn North Carolina 27040(US) ReDresenlattre: Hoeger. Stelfrecht & Partner Uhlandstrasse 14c D-7000 Stuttgart 1(OE) Smoking article. ~'_l Cigarettes having low efficiency filters, rods of cut filler having a low packing density, and paper wraos having a high net permeabifities and low in- herent permeabifities can yield good taste. low gas phase mainstream deliveries as well as low amounts of visible sidestream smoke. Typical cigarettes have relatively large amounts of volume expanded flue- cured tobacco materials as cut filter. paper yraos containing magnesium oxide and.,or magnesium hy- C4droxide. and relatively high leveis of air dilution 30 40 50 60 CD Uj 35 45 25 .5 20 FIG. I 00 BATCo document for Legal Services : Health Canada 19 October 1999 0290911 2 SMOKING ARTICLE I provided ;r. *he cerionery .~f !tl;- -ouirle-rj e,4-~sv i BACKGROUNO OF THE INVENTION thereof, .,r 11ave ~iiter .31eme-!s hiqniv efficient ,~r the remo-wal of "!ar" ana nicnitne !rotn he iiii, stream aerosol. In ~,erleral 'ne 2er&,3v/4~o iasta -r The present invention relates to smoking arti- 5 strength :-I ing cigarettes -::a_zs1f1-3c as navtol; : - cles such as cigarettes. and in particular to ciga- levels of "'at" and nic~tlne 4re zrcqrqssiv,~,y -~hibit lower Cigarettes are employed by the'user by burn- smoke component mainstream and sicestream de- ing one end thereof. The user then receives main- liveries. stream smoke into his;her mouth by drawing on the U.S. Patent No. 4,524,268 to Baker et at pro- cpposite end (eg the filter and) of the cigarette. 30 poses a C:garette having wraccier pacer with an During the time that the cigarette is not being inherent air permeability of 3 to 45 CORESTA. For drawn upon by the user. it remains burning, and example. Me wrapper paper is disclosed as having sidestrearn smoke can be generated. Sidestream a coating of starch. aluminum oxide. magnesium smoke is Smoke which directly enters the atmo- oxide. calcium oxide, sodium 'ormate and sodium sohere during the static burn period of a smoking 35 acetate. See cot. 3. lines 23-37 However, such a article. Sidestream smoke difluses into the almo- cigarette WCUid be expected to yield mainstream sphere, and the characteristic visible nature thereof smoke having a relatively high gas ohase content. may be perceived negatively by certain individuals. Certain references suggest that Certain gases The so called "full flavor" cigarettes have been can be removed from the mainstream smoke of popular smoking arlicles which deliver a desirable 40 cigarettes. For example. Avedikian in U.S. Patent tobacco taste. flavor and satisfaction to the smoker. No. 3.368.566 proposes a cigarette having a plural- Typically, the "full flavor" cigarettes deliver about ity of short litters which incivtdually contain certain 14 mg or more of FTC "tar' per cigarette. Ciga- substances for the supposed removal of various relies also can be classified as 'full flavor low tar' substances from mainstream cigarette smoke. An- cigarettes. Typically. the -lull flavor low tar' ciga- 45 other cigarette having a less complicated filter de- rettes deliver from about 8 to about t4 mg of FTC sign than that design proposed by Avedikian is 'tar' per Cigarette. as well as lower levels of FTC proposed by Brooks in U.S. Patent No. 4.481.960. nicotine as compared to -lull flavor' cigarettes. Yet Although Brooks procoses a cigarette having fil a another classification of popular cigarettes is the paper wrao with the possibility of a wide range of . ultra low tar' cigarette which delivers still lower so air permeability. and (4) air dilution such that the levels of FTC "tar" and nicotine. Typically. the yield of mainstream carbon monoxide is relatively . ullra low tar* cigarettes deliver less than about 7 low. the reference does not address a cigarette CD mg of FTC: 'tar" per cigarette. The "full flavor low yielding a low level of visible sidestream smoke. tar" and "ultra low tar* cigarettes conventionally U.S. Patent Mos. 4.231.377 to Cline et al. have air dilution means such as laser perforations 4,420.002 to Cline. and 4,450.847 to Owens pro- 2 BATCo document for Legal Services : Health Canada 19 October 1999 3 0290911 case that cigarette pacer macceis ~ontaining in~p)- ~afat:)113 nesium oxide and or magnesium hydroxide matert- material arc FTC ":ar" simiiarli ats 'Can be used in Order to manufacture cigarettes lured using a --cnverivcrai -::qarette cars, -:1c -mnien field reduced visible sidesiream smoke dur- &,amples -f e:onv#~ntiorlal :i(,,3re!tR cace, --ws ,ng static burn periods. However. such tow per- 5 are manufactured 'rom flax ;1ter ano 3r- meactility paper vrapQers can tend to provide an bcnale filler have Nraccer cermeatitilies off-taste to mainstream Smoke Or an undesirable 20 and 120 cm min and casis Ne!ghls -i 29 *-,~ 10 aroma to sidestrearin smoke. g m- See. DurocnPr clec. %riv 71%x S---- 111 10 I It would be desirable for the cigarette manuiac- pp.52-71 (19841, arin Sarrit-31-I. r--- turer to provide a good lasting cigarette which 5 82. pp. 390-394 11982) meets the desires and demands of certain smokers or groups of smokers. In particular. it would be desirable to provide a good tasting cigarelte vhich BRIEF DESCRIPTION OF: Tl~=_ 0PAININI-E delivers the characteristic mild taste of low 'tar' cigarettes, provides good smoking satisfaction. pro- '5 vides low mainstream gas phase deliveries. and. Figure I is a longitucirat sectional oe- of an which generates tow levels of visible sideslream embodiment of this invAnt(on, and smoke~ Figure 2 is a diagrammatic illustration of the type of wraoping material which can be employed 20 to provide the smokable rod of the article of this SUMMARY OF THE INVENTION invention. The present invention relates to a smoking DETAILED DESCRIPTION OF T.HE PRUERRE'D article which delivers good tobacco taste and sat- 25 EMBODIMENTS isfaction. Such cigarettes also are capable of de- livering relatively low levels of FTC -tar" in com- bination with relatively low levels of carbon monox- One embodiment of a smoking artic!e of this ide and other gaseous components. In addition. invention is shown in Figure 1 and has the form of such cigarettes generate relatively low levels of )0 a cigarette 10. The cigarette includes a generally visible sidestream, smoke. cylindrical rod 15 of tiller material 20 contained in Cigarettes of this invention include a rod of circumscribing wrapping material 25. The rod 15 s filler material contained in a circumscribing wrap- conveniently referred to as a "smokable rod" or a ping material. The majority of the tiller material "tobacco rod." The ends of the tobacco rod are preferably is flue-cured tobacco of some form. and is open to expose the filler material. the tiller material has a low packing density within The cigarette 10 also includes a filler element the rod. The wrapping material is highly permeable 30 or other suitable moutiriciece posiltorea aola- and has a relatively slow burn rate. In particular. cent one end of the tobacco rod 15 Such that the the Nrapping material has a relatively low inherent filter element and looacco rod ate axially angripJ to permeability and a relatively high net permeability Jo an end-to-end relationst,,io. preferably abuit!ng one Prelerably, the wraooing material includes at least another. Filter element 30 nas a generaily cylin. one inorganic oxide and.or inorganic hydroxide drical, shape, and the diameter thereof is essentially contained therein- The cigarette also includes a low equal to the diameter of the tobacco rod The ends efficiency filter means at one end thereof, and of the filler element are open to permit the cassage preferably a means for providing air dilution there- is of air and smoke therethrough The filler element to. Alternatively. the Cigarette has a mouthpiece 30 includes filter material 35 which is over4racoed equipped with means for providing air dilution to along the longitudinally extending surface thereof the cigarette. with Circumscribing ptug wrap material 40. The w~apving material is perforated enough to The filter element 30 is attached to the :CbaCCO provide a cigarette which can deliver good tasting so rod 15 by tipping material 45 Nhich circumscribes mainstream aerosol. However. the level of perfora- both the entire length of the filler element and an lion is not so great that the air dilution provided adjacent region of the tobacco rod. The nner sur- lhereby lowers the delivered taste to an undesir- face of the tipping mateftai 45 is !ixedly secured to ably low level. The slow burning nature of the the outer surface of the plug Yrap 40 and the outer wraoping material is typically such that a cigarette 55 suriace of the wrapping inaterial 25 of the tobacco manufactured therewith burns at a rate such that rod. using a suitable adhesive. A ventilated or air C:) the cigarette yields from I to 2 more pulls under diluted smoking article is provided with an air dilu- FTC smoking conditions than a cigarette of com- tion means such as a series of perforations 50 3 %1.0 co -10 V1 BATCo document for Legal Services: Health Canada 19 October 1999 5 0290911 13 -?al:h of nrictil extend !hrCugr% the lipcirig material be a suncle hollow ~ube ,f cacer r otastic -,; ana plug rap. polyethylene. cr trip 'ike) If) ,-,ch 'tie air 111wicl, Referriog to Figures I and 2. the mraloping can be " orovioea by !he, a0rjit,or, ~t iieles. rbis I m-1112rial 25 has a ovidth m (Shown in F;gure 2) the like. Such a mouthpiece can --rovice nigli Nhich is equal to We circurnl9renCO of the Cigarette 5 of air dilution to the maitistrearn aerosol -Illoul oluS the lao zone al the giue line which -jitimalely filtration of the smcke by a lilter tratenal tuc.11 as -,:suits during ctgarelte manufacture. The nraoping cellulose acetate rnawriai 25 includes a series of perforations 60 The filler material -3moloyel r 'Ile r"ani:1,1C'1jr! which extend in a linear fashion along the longitudi- of the smokable rod -.an iart tj ~~rrer ,o p,., 1~ 3 nal length of thereof, Alternatively, other configura- 20 smokable rod of retatviely cacking -.ensiv; tionS such as a random perforation pattern can be Normally. the majority of the Yl-~r -atevaj provided. The size. number and relative cositioning in the smokable rod ~s flue-Curea tocac:o, -naieflal of the individual perforations 60 can Yary depend- at some form. The flue--_uiPd 'ooac:,) material an Ing upon the desired characteristics of the cigarette be blended w,ilh other tobacco materials. such as which has the wrapping material incorporated 15 the Oriental lobaccosi as wpll as !otacco suoslitule therein. The individual perforations are shown as materials. For example. puffed grains such as enlarged in Figures 1 and 2. pulled milos. rye. barley. and the like. also can be Typically. the tobacco rod has a length which employed as filter materials. Often. certain amounts ranges from about 50 mm to about 85 mm. and a of Burley or Maryland tobaccos. or the so called -ircumference of about 16 mm to about 28 mm. 20 rare or specialty tobaccos Can be employed as Tho tobacco rods and the resulting cigarettes can blend components also. The tobacco materials can ce manufactured in any known configuration using be employed in a processed fcrm leg as volume 'Known cigarette making techniques and equipment. expanded flue-cured tobacco I:iler) F7or example. Typically. the filter element has a length which the tobacco material can be volume expanded us- ranges from about 20 mrn to about 35 mm and a 25 ing the techniques described in U S. Patent No. circumference of about 16 mmi to about 28 mm. 3.524,451 to Fredrickson or in U.S. Patent No. The filler material can be any suitable material 4,531,529 to While et al. It desired the preferred such as cellulose acetate. polypropylene. tobacco flue-cured tobacco material can be blended with material. or the like, The plug wrap typically is a processed tobacco stems. re,-onstituted tobacco conventional paper pfug wrap, and can be either air 30 materials leg preferably those reconstituted to- permeable or essentially air impermeable. How- bacco materials made principally from flue-cured ever, if desired. a nonwtaoped cellulose acetate tobacco andior Oriental tobacc3sf. or tobacco sub- tiller element can be employed. The various filter stitute materials. it desired. the oreferred tobacco elements suitable for use in this invention can be materials can be blended -with varying amounts of manufactured using known cigarette filter making is carbonized and-or pyrolyzed materials. techniques and equipment. The smokable materials generally are em- Filter elements preferably provide minimal played in the form of cut tiller as is common in mainstream smoke removal efficiencies Nhile main- convenitanal cigarette manufacture, For example. taining the desirable draw characteristics of the the smokable filler material can be employed in the cigarette. Such minimal smoke removal efficiencies do form of shreds or strands cut into widths ranging are provided by the so-called *low efficiency" fil- from about 1.25 inch to about 1 60 inch. preferably ters. Low efficiency filters have a minimal ability to from about 11:30 inch to about 1.40 inch. Generally. remove mainstream smoke particulates. Generally, such pieces have lengths which range ]arm about low efficiency filters proviae about 40 weight per- 0.25 inch to about 3 inches. cent mainstream smoke particulate removal effi- 45 The filler material most desirably is composed Clancy or less. The low efficiency filler is desirably of more than about 70 weight peFcent flue-cured used herein in order that the relatively low "tar" tobacco material. more preferably more than about yield is obtained primarily as a result of a relatively 75 weight percent flue-cured 'obacco material. ano high level of filter ventilation or air dilution- Such most preferably more than about 80 weight percent cigarette configurations provide a means for rieduc- so flue-cured tobacco material. Oltentimes in in- ing the yields of mainstream gaseous components. stances when the flue-cured tobacco cut Filler is An example of a suitable material for providing a highly volume expanded. a majority of the volume low efficiency filter element is a cellulose acetate of the filler material within a blend is occupied by tow item having about 8 denier per filament and the volume expanded flue-cuted tobacco material about 40.CGO total denier. 55 leg more than about 80 percent. and frequently Alternatively. the cigarette can have a mouth- more than 90 percent of the volume of the filler is X~- piece equipped with means for providing air dilu- occupied by the flue-cured tobacco material). CD tion to the mainstream aerosol. the mouthpiece can An example of a preferred filler material in- 4 CC) BATCo document for Legal Services: Health Canada 19 October 1999 0 290 911 .:!uij,?S about 10 to acout 20 oy -~tqnt Of I IS tatlCe -S il:!a If?f] '~ '.' '(S SLICn as naflulactur - Orip.nial totacco material aric '--,n about 80 to ng -:cnstrainis asscc;ats-- -vith ~he t,,Qe -,I rl=r-, alicut 90 percent by weight of -e-cured tobacco im'.10,jeci and the marulactur,m] acciata- material. tus acid pincess F-r for a fillet elemert Preferred filler materials Ce a relatively 5 having a 27 tnin :i-p maximurn listance large proportion of volume ie.:=-ndecl flue-curect may range from ZICOL; 23, 7rim to alicut 26 mm tobacco material. Such volume -oamled tobacco from the extreme mct;:!--i cl !he 'tiler ilement materials aid in providing a tocs-:o too having a The positioning f 're 2 r culion ients -3 -a;tlmuin low packing density. An exar7-::-3 of a suitable Jislance from One encumerd v We arlic-e blend is a blend of about 17 we :,![ percent Orien- to allows for providing a -ao-tnum /Pniflattor Pvei ',~( tal tobaccos and about 83 meti;:- percent volume a given "far- yieto apr -ayimum :igarettie ~res_ expanded flue-cured tobacco. sure drop for a given filter i,emeot anci tobacco r-a As used herein. *packing ce-sity" means the combination. weight of the filler material whic- occupies a unit As used herein. the *-3rm "air lilulion' Is thp volume within the smokable too ~:r articles of this is ratio (generally excilessec as a percentage) -)I the invention. the packing density :enerally ranges -doluine ol air drawn througn the air (jOution means from about 100 mgcrn3 to a=:-;t 250 mgcrnJ to the total volume )t air and aerosol -1rawn more typically from about 100 ~tgcmJ to about through the smoking ar!ic,e and exiting the extreme 200 mg cm3. and in certain instances from about mouthend po(lion of the Smoking article. For air 130 m(;.cm2 to about 180 mg.cm . 20 d0uted or ventilated smoking articles of this inven- FlavorantS can be incorcora:isd into the ciga- lion. the amount of air d6ution can vary. Generally, enes. For example. the filler ~alertals can be the amount of air dilution fcr a cigarette is greater employed with or without casirc or top dressing than about 30 percert. oreferably greater than additives. See. for example. Let' -gwell et al. To- about -10 percent. more oreferatly greater than baCco Flavoring Lot Smokinc ~-oducts (197F 25 about 50 percent. TypicaJy. for cigarettes of rela- Flavotants such as menthol car oe incorporatpd tively small circumference (i.e about 21 mm or into the cigarette using technicues familiar to the less) the air dilution can te somewhat less than skilled artisan. If desired, flavor a~ditives such as that of cigarettes of larger circumference. The up- organic acids can be tncorporatez rito the cigarette per limit of air dilution for a cigarette typically is as additives to the cut filler. In :Articular, levulinic 30 less than about 85 percent. more frequently less acid. nicotine levulinate. or a rm,ture of levuiintc than about 75 percent. acid and nicotine can be tric:rzorateol into the As used herein. the ~errn 'pressure drop" in cigarette. For example. the levu:tr;c acid. nicotine referting to the smoking alicte is meant that dif- invutinate or levulinic acid:nicoltr= mixture can be ference between atmospne,c pressure at file ex- added to the cut filler in amourts which typically is treme mouthend point of !.he smoking article. as range from about I to about 10 ::=-rcent. based on measured at a given flow -ate through the smoking the weight of 'he cut !iller. arlicle. Typical pressure Vco values for cigarettes Typically. the tipping mater ai Circumscribes of this invention are -greater that about 40 mm. the filter element and an adjace-t region of the note !rpauently greater than about 50 mm of water tobacco rod such that the tipl3in.- -laterial extends jo pressure drop at 17 5 ril Sac of air Ilow rate. about 3 mim to about 5 mrn alorc "ie length of the Most desirable wracc:ng materials for the to- tobacco rod. Typically. the material is a bacco rod have relatively ;rw inherent permeabiiit- conventional paper tipping mater al. The lipping ies and relatively high net permeabilit;eS. By the material can have a porosity wm:i can vary. For term "inherent permeabilit, , ,' is meant the air flow example. [he tipping material can :9 essentially air js porosity of the wrapping material itself. Typically. impermeable. air permeable. or =e treated tog by wrapping materials having !cw inherent permeabiitt- mechanical or laser perforation Zecnntques) so as ies have porosities wnicn are less than about 45 to have a region of perforations. -:enings or vents CORESTA units. preferativ less than about 30 thereby providing a means for pr-,-cling air dilution CORESTA units and more preferably about 15 to the cigarette. The !otal surface area of the per- so CCRESTA units or less 9y the term "net per- forations and the positioning ~l 'he perforations meabiiity" is meant the air flow porosity of the along the periphery cf the smcki-g article can te wrapping material as usea in manufacturing the -darted in order to control the ::c-lorrnance cnar- tobacco rod. Typically. the air permeability is pro- acteristics of the smoking article. vicled to the wrapping material using micro laser. Preferably. the air dilution means is positioned 55 mechanical or electrostatic cerforation techniques. along the length of the cigarette at a point along During micro laser and elecrostatic perforation oo- the filter which is al a maximum s:stance from the erations. it is most clestratie that care be taken to CD extreme mouthend of the article The maximum maintain the desired color and opacity of the pa- co BATCo document for Legal Services : Health Canada 19 October 1999 0290911 rer F-)r e-arnole. it is most desirable to minimize eignt %~ 'ho total -eight )f lhe -:ii;arelts before an unsightly "browning" or singeing of the Smokim, -,~tal veignt Icss )I a ngarotte -luting . Wer Smakitir; -S directly Plated le) ;he tcval zmoke emit- Preferred wrapping materials are paper wrap- by tr-9 Cigarette. Cigarettes -:r this invention uing materials which contain from about 10 to 5 exhibit a eight loss Nhich is 1-irtrally atout 15 a0clut 45 percent by -eight of magnesium oxide Cercent less. and occasirrially as -nuch as aLout arld or magnesium hydroxide. as well as flax, cel- 25 perce,l 5PSS than :onvenltonal -igarettes -A lulose pulp. burn additives Such as potassium ci- comparaole FTC -~ar" jellveui 73rri orifiguration trate or potassium carbonate. and other materials Cigarettes of this iriventico ~;iccuce less nsiole such as fillers. Often. desirable paper wrapping 10 sidestream smcke ihan -:Crivenitoral c:qarettes .)I materials contain more " than about 15 percent by comparable configuration when ~,a,uatec: ising he weight of magnesium oxide and;or magnesium hy- method c!escribecl by Baker at ~ot 3 lines 3a--:9 .31 droxide. Examples of suitable materials are de- U.S, Patent No. 4.624268. The ecuction in /isjoie scilbed in U.S. Patent Nos. 4.231.377 to Cline et al; sidestrearn smoke of cigarettes of this invention is 4,420.002 to Cline and 4.450.847 to Owens. is , such that siclestrearn Smoke emitted by .--igarettes The wrapping materials are processed in order )f this invention frequently can be as much as 50 to have a relatively high net permeabilities. For cercent of that of conventional ::garettes of com- e4amcle. wrapping material having low inherent palrable F7 C "far" delivery and configuration. By r,~rineaoilifies can be perforated using conventional the term - configuration" in relerring to a cigarette -?!-circistalic perforating techniques (eq to provide 20 is meant 'he circumference. tot)acco rod length and ndividual perforations comoarable in size to con- filter elerrent length. In additicn. in terms of sen- mpitional electrostatically provided perforations) to sory oercection. the sidestream smoke of ciga- obtain a wrapping material having a porosity of eltes of this invention can be Characterized as less from about 50 to about 250 CORESTA units. pref- irritating inan that of conventional cigarettes of erably from about 60 to about 140 CORESTA units. 25 comparable FTC 'tar" delivery and contiguration more preferably from about 90 to about 120 COR- vhen evaluated using the test methodology de- ESTA units. scribed by G. A. Ryan. 40th Tobacco Chemists' The sizes of the individual perforations which Research Conference (Oct~ber. 7966) provide for the high net permeabilities to the ciga- The following examples are provided in order rette paper wrap generally are such that the per- 30 to further illustrate the invention but should not be forations are larger than the pores which are construed as limiting the scope thereof. Unless present in the naturally occurring paper vyrap (i.e otherwise noted. all parts and percentages are by which provide the inherent permeability to the pa- Nelght. oer). For aesthetics purposes. the individual per- forations preferably are small enough to not be 15 unsightly. For example. the perforations are not EXAMPLE particularly noticeable. and in most instances are barely visible to the naked eye. Cigarettes of this invention generally deliver Cigareties having lengths of about 99 mmi and FTC -tar" in the range from about 2 to about 10 40 circumierences of about 2485 mm have tobacco mg.-cigaretle: and carbon monoxide in the range rod lengths of 68 mrn and filter element lengths of lower than that of a cigarette of a comparable *tar' 31 mm- The tobacco rod includes a charge of level. The cigarettes yield relatively low levels of tobacco cut filler contained in a circumscribing mainstream gaseous components such as carbon cigarette oaoer wrap. The filler material employed monoxide and nitrogen oxides. For examole. typi- is in providing the tobacco rod is in the form of cal FTC -tar' to FTC carbon monoxide ratios are strands cut at about 32 cuts per inch. The initial less than about i, frequently less than about 0.8. in 511ar material includes a blend of about 83 percent Certain instances less than about 0.6. Ilue-cured tobacco which has been volume ex- Cigarettes of this invention generally deliver vanded to about twice its original volume. and less smoke due to the relatively low total consum- 50 about 17 oercent Oriental tobacco. The blend has a able tobacco weight provided by the expanded nater and glycerine casing applied thereto. tobaccos. grains and/or carbonized materials. By The cacier wrao is sold commercially as Ecustat the term "less smoke" in referring to a cigaretle of Experimental No. TOO 03363 by Ecusta Corp. The this invention is the -eight loss during FTC smok- caoer wrao is a heavy weight sheet. low visible ;ng conditions is lower than conventional cigarettes 55 sidestrearn paper. and contains aciout 40 percent of similar -tar' delivery and configuration. Weight magnesium oxide, The paper has an inherent per- C:D loss is measured by collecting the ash and butt of meability of !5 CORESTA units and a basis weight the cigarette after smcking. and comparing that of 45 g m~ The paper is electrostatically perforated 6 .1.0 CDO Room ligi2mommum~ 11111110111111111 CC BATCo document for Legal Services : Health Canada 19 October 1999 I 1 0 290911 12 i in .)rder to yield a net Vermeablitt'; -)f 1 10 CCR- The ~iqaretje -S Sin-_'keCJ ara oflhvefS a 1-:~I ESTA units. The general perforation pattern s iooacco lla,~or as eil as an acceoiabfe oraft Shown in Figure 2 The individual perforations qacn lance. The mainstream aeicsol is not ha(Sli ano IhP have a size compaiable to conventicnal electro- ~iqatette palas -Jestiavle imoking satisfaction static perforations in Conventional cigarette wrap. 5 Also. the cigarette yie,Cs :o-.v amounts :f itsicte and are positioned with about I to about 10 sidestream smoke perforations.mm essentially linearly in the longttuai- nal direction Such that the lines at perforations are positioned about I mm to about 3 mm apart. EXAMPLE 3 The low efficiency filler element is manufac- to tured using conventional cigarette filter making technology from cellulose acetate tow tS denier per Cigarettes are proviciec --;sirq *he o;1.2~ong L,,fo- filament. 40,000 total denier) and circumscribing air cedure. permeable paper plug wrap having a porosity of Cigarettes having leingths -)f at:out 84 mm and 26,000 cm. min. !5 circumferences of about 24 85 mm have [coacco The tobacco rod and filter element have similar rod lengths of 57 mm and filter element engths a[ circ um fare nces. are aligned in an abutting, end-to- 27 mm. The tobacco rod inc!udes a charge of end relationship. and are secured together using tobacco cut filler described n E.,tample 1 contained tipping paper having a porosity of 3.000 mi.min. in a circumscribing cigarette pa(er wrap which is The tipping paper is adhesively secured to the filter 20 described in Example 1. The filler material has a element and the adjacent portion of the tobacco nicotine content of 2.1 percent. The low effic:ency ad. The tipping material circumscribes the length filter element is manufactured using conventional of the filter element and about 3 mm of the length cigarette filter making technology from cellulose of the tobacco rod. Cigarettes so described are acetate Low (8 denier per filament. 40.000 total manufactured using a Hauni Protos Cigarette mak- 25 (lenieri and circumscribing air permeable paoer er from Hauni-Werke Korber & Co. KG. A ring of plug mrap having a CORESTA porosity of 26.000 mechanically provided perforations thus providing" cm.min. The tobacco rod and filler element are the permeability extends around the periphery of aligned in an abutting. end-to-end relationshin and the cigarette about 26 mm from the extreme secured together using nonporous tipping paper. mouthend thereof. The perforations so provided 30 The tipping paper is adhesively secured lo the filler yield cigarettes with about 53 percent air dilution. element and the adjacent portion of the tobacco The cigarette weights 0.8904 g and the filler rod. The tipping material circumscribes the length material within the rod has a packing density of of the filler element and about 3 mm of the length 155 mg cm-. The cigaretle is smoked under FTC of the tobacco rod. CiciaretteS so described are concitions. The cigarette yields 7.3 ing FTC "tar". 'is manufactured usmg a Haunt Protos Cigarette Mak- 0.72 mg nicotine. 6.4 mg carbon monoxide. 37 er from Hauni-Werke Kcrber & Co. KG. A ring of ,nirrograms narogen oxides. and a puff ccunt of laser perforations thus providing the permeability is 9.8. provided using a Haunt Lab Laser The perforations The cigarette is smoked and delivers a rich extend around the perioher-I of the cigarette acout tobacco flavor as well as an acceptable draft rests- so 22 mm from the extreme mouthend thereof. The lance. The mainstream aerosol is not harsh and the perforations so provided yield cigarettes which are cigarette yields desirable smoking satisfaction. about 73 percent air diluted. Also. the cigarette yields low amounts of visible The cigarette which weigns 0.7180 q and the Siclestrearn smoke. packing density of the filler material within the rod J5 is 152 mg;cm3. The cigarette is Smoked under FTC ccnditions yields 4.1 mig FTC "tar". 0.44 mg nICo- EXAMPLE 2 tine. 2.8 mg carbon monoxide. 15 micrograms ni- Irogen oxides, and a puff count of 8. 1. The cigarette is smoked and delivers a rich The cigarettes are provided using the proce- 50 tobacco flavor as well as an accectabie draft (esis- #Jurp and materials described in Example 1. except lance. The mainstream aerosol is not harsh and the 'hat of 7,000 cigarette yields desirable smoking satisfaction the tipping paper has a porosity ini min thereby providing cigarettes which are 74 Also, the cigarette yields low amounts of visible percent air diluted, sidestream smoke. A cigarette weighs 0.8848 g is smoked under 55 The cigarette is evaluated using the Sensory FTC Conditions and yields 4.3 mg FTC "tar'. 0.48 test methodology described by Ryan. suora. and nicotine. 3.3 mg carbon monoxide, 21 micrograms yields less perceptual sidestream irritation than a nitrogen oxides. and a pull count of 10.6. conventional cigarette of comparable FTC "tar' cle- CD 7 \S_ BATCo document for Legal Services : Health Canada 19 October 1999 13 0290911 1 - i~etv af,n .ontiquiration !OoaCco Cut at accul 32 --;" -:ei, -t,,:n The hiler Tl,.! :IqaT'2t%e is e.,aluated for sidestream nico- material inct-ides a bieno -)f jc--,ijj ~17 pi~icrjit 9to- -we and net total particulate matter (WTPM) using cured tobacco Nr,,cri has r3eeo .,~-kvne e.oanrie,j to echnirlues as desct)ted by Baker at at in U.S. about twice its original ~ioium-? an,; abcut 13 Z-- Patent No. 4.624.268. The cigarette yields 1.97 mg 5 cent Oriental tobacco Tle nas a vater ann side-ztreamt nicotine and 7 60 mg sidesiream glycerin casing aoolle(I The nicotine .:cn- WTPM. The cigarette is evaluated for respirable zent of the blend is at~out 2 3 cer,:z?nt suspended particulate -after JRSP) using a TSI The low -ffic:enc-/ :tiler ~;-ernri-t is manufac. Model 5000 automatic rescirable aerosol mass tured from ceflutose ace!al.? ',:, 8 'enter Cer ;.ila- monitor and techniques described by Heavner at at Q ment. 35.000 Imai -,-enter, 21- : air at the 39th Tobacco Chemists' Research Confer- impermeable pacer OlUg NfBC 7he 6.olao rCel anell ence (1985). The cigarette yields 93.1 filter element are Secured togetrer ~jsinr, norcor- rnicrogramwm3 RSP. ous lipping pacer T'he itao,nq 7jacief is adhesiveiy For comparison purposes a cigarette desig- secured to the filter elempot and an ad)acent D,~r- nateq as Reference Cigarette lR4F is obtained 75 tion of the tobacco rod. Cigireitss to jescribed are from Tobacco and Health Research institute, Lex- manufactured using a Haunt P,ctos Cigarette mak- -tigton, Kentucky. The cigarette weights 1.019 g, er. A ring of laser perforations thus providing the has a length of 83 mm. a circumference of 25 mm. permeability is provided using a Haunt Lab Laser a smokable rod length of 56 mm, and a filter The perforations extend around the periphery of element length of 27 mm. The cigarette is provided 20 the cigarette about 23 mm from the extreme with 28 percent air dilution by mechanical perfora- mouthend thereat. The perforations so provided tion means. The cigarette has a blend of about 35 yield cigarettes with about 63 percent air dilution. percent five-cured tobacco. about 22 percent Bur- The cigarette weights 0.5-10 9 and the filler ley tobacco. about 12 percent Oriental tobacco. material within the rod has a packing rjensity of about I percent Maryland tobacco. about 3G per- ps 0.163 g CM3 The cigarette burns at a static burn cent processed tobacco sheet and about 8 percent rate of 52 m%min or 8.1 rim min, The cigarette is casing materials. The nicotine content of the blend smoked under FTC smoking conditions and yields is 2.1 percent. The packing density of the tobacco 4.0 mg FTC "tar", 3.7 mg carcon monoxide. 0.34 Yvithin the rod is 268 mg.*cm3. mg nicotine, 17.3 micrograms nitrogen oxides. and The comparative cigarette is smoked under 30 a pull count at 5.9. F7C conditions, and yields 9.2 mg FTC "tar". 11.6 The cigarette is SMOKed and cielivers a rich mg Co. 0.8 mg nicotine. 340 micrograms nitrogen tobacco flavor as well as an acceptable draft resis- oxides. and a puff count at 9,2. The cigarette is tance. The mainstream aerosol is not harsh and the evaluated for sidestrearn nicotine, WTPIVI and RSP. cigarette yields destrable Smoking satisfaction. as described herambefore. The cigarette yields is Also, the cigarette yields low amounts of visible 5.32 mg sideStTearn nicotine. 25.3 mg WTPM and sicestrearm smoke. 408 microgramsim" RSP. EXAMPLE 5 EXAMPLE 4 40 Cigarettes having lengths of about 84 mm and Cigarettes having lengths of about 84 mm and circumferences of about 24.8 mm have tobacco circumferences of about 20 mim have tobacco rod rod lengths of 60 mrn and filler element lengths at lengths of 59 mim and filter element lengths of 25 45 25 mm. The tobacco rod includes a change of mm. The tobacco rod includes a change of tobacco tobacco cut filler. and a circumscribing cigarette cut filler. and a circumscribing cigarette paper wrap paper wrap which is sold commercially as Ecusta which is sold commercially as Ecusta Experimental Experimental No. TOO 0 1788 by Ecusta Corp. The No. TOO 01788 by Ecusta Corp. The paper wrap is pacer wrap is a heavy weignt Sheet. low visible a heavy weight sheet. low visible sidestream paper 50 sidestrearn paper and contains about 12 percent and contains about 12 percent magnesium oxide. magnesium oxide. The paper has an inherent per- The paper has an inherent permeability of 15 COR- meabifity of 15 CORESTA and a basis weight of 45 ESTA units and a basis weight of 45 gtmz. The g,,m2 The paper is Piectrosiaticaily perforated as pacer is electrostatically perforated as generally generally described in Example I in order to yield described in F_xampte I in order to yield a net 55 a net permeability of f 10 CORESTA units. permeability of t 10 CORESTA units. The tiller material employed in providing the The filler material employed in providing the tobacco rod is in the form at strands or shreds of tobacco rod is in the farm of strands or shreds of tobacco cut at about 32 cuts per inch. The tiller CD BATCo document for Legal Services : Health Canada 19 October 1999 15 0290911 -6 mmeitai includes a I:ifenci :)I aocut 87 percent flue- c) ineans for or,:,lr!rlg -Ir-ater -han .:ufed tobacco Much has been volume -panded to 30 Qercent air dilutict, t,~ 't%e ~igairc:ite atcut twice its original volume. and about 13 per- 2. The cigarette )I C!airn I nersin ;h,3 vi.-IC- -'ent Oriental tobacco. The blend has a water and &,iD .cmainorg magfie. ::inq material is a cacer glycerin Casing applied thereto. The nicotine con- 5 sium oxide and or magi-esium nydrootce tent of the Wend is about 2.1 percent. 3. The cigarette of C:awn I -~r 2 nnerem it-r? The low efficiency filter element is manufac- ratio of FTC carbon mcnc,lae to FT ': -ar" ;hereof lured from cellulose acetate low (8 denier per fila- is less than I ment. 40,000 total denier) and circumscribing air 4. The cigaiette ~f C:atrn I ~r 2 nerern the impermeable paper plug wrap. The total rod and 10 flue-cured tobacco mate,,ai ~s /oiurne ~-oancecl filter element are secured together using nonpor- flue-cured tobacco cut 'Wer ous tipping paper. The Upoing paper is adhesively 5. The cigarette of C;aiin I .:r 2 nnere- secured to the filter element and an adjacent por- smokable material also irivucles a blend si Or,entai tion of the tobacco rod- Cigarettes so described are tobaccos. manufactured using a Hauni Protos Cigarette mak- is 6. The cigarette cf Claim 2 Nnerein the oacer er A ring of laser perforations thus providing the wrap has a basis weight of about 20 ; m- Io acout permeability is provided using a Hauni Lab Laser. 50 g rn~: and the magnesium oxide and or magne- The perforations extend around the periphery of Sium hydroxide contained therein ranges !rom the cigarette about 23 mm from the extreme about 10 to about 45 weight ce(cant. mouthend thereof. The perforations so provided 20 7. The cigarette of C!airn I or 2 wherein the yield cigarettes with about 71 percent air dilution. smokable material is absent of Burley tobacco. The cigarette weights 0.740 g and the filler 8. The cigarette of C:aim 1 or 2 wherein the material within the rod has a packing density of smokable material is absent of Maryland tobacco. 0. 123 9 cm3. The cigarette burns at a static burn 9. The cigarette of Claim I or 2 having a rate of 60 mgimin. or 6.5 mm.,min. The cigarette is 25 packing density of about 100 mg,cm3 to about 200 smaxed under FTC smoking conditions and yields mg,CM3 5.2 mg FTC 'tar*. 2.9 mg carbon monoxide. 0.53 10. A cigarette comprising: mg nicotine, 14.3 micrograms nitrogen oxides. and (a) a rod of smokable material contained in a a puff count of 6.6. c!rcumscribing wrapping material. wherein The cigarette is smoked and delivers a rich J0 (j) the rod has a circumference of about 21 tobacco flavor as well as an acceptable draft resis- mm or less. tance. The mainstream aerosol is not harsh and the (ii) the wrapotng material is a paper -oyrao. has ,igarette yields desirable smoking satisfaction. an inherent cermeabilily of less than 45 CORESTA Also- the cigaretle yields low amounts of visible units. and has a net -ermeaotlity of greater than sicestrF-am smoke. J5 about 50 CORESTA urits. and (fit) the packirg Clerisity 61 the smokable material within the rod is Lelween aLout 100 Claims rng. cm-' and about 200 mg cm 2. and (b) filter means 3xialty aligned Nith one end I A cigarette comorising: 40 of the rod. and which is cacacle of proviCing w0ut (a) a rod of smokable material contained in a 40 weight percent or less mainstream smoke oar- circumscribing wrapping material. wherein liculate removal efficiency (i) a majority by weight of the smokable 11, The cigarette of Claim 25 further comoris- material is flue-cured tobacco material: ing means for providing air dilution thereto. (ii) the wrapping material is a paper wrap 45 12. The cigarette of Claim 10 or I I wherein the containing inorganic oxtde andlor inorganic hydrox- wrapping material is a oaper wrao containing mag- ide. has an inherent permeability of less than about nesium oxide and'or magnesium hydroxide. 30 CORESTA units. and has a net permeability 13. The cigarette of Claim 10 or I I .0erein at between about 80 CORIESTA units. and least about 70 percent by weight of the smokable (iit~ the packing density of the smokable so material is flue-cured tcoacco material. material within the rod is between about 100 14. The cigarette of Claim 10 or I t Nherein the mg cm' and about 250 mg,-cm3: smokable material is absent of Burley tobacco. (b) mouthend piece in the form of a filter 15. The cigarette of Claim 10 or I I Nhefein the elpment which is capable of providing aCout 40 Smokable material is absent of Maryland tobacco. CD .veignt percent or less mainstream tobacco smoke 55 16. The cigarette of Claim 10 or 11 herein the particulate removal efficiency axially aligned with ratio of FTC carbon monoxide to FTC -tar- thereof one end of the rod; and is less than 1 17. A cigarette cornor?stng: _-N BATCo document for Legal Services : Health Canada 19 October 1999 17 0290911 18 j, I)f JMokao!e material Contained in a waccinq material. wrierein to a rialctity by NeigM of the smokable inaterial is flue-lurecl tCloacco material: tio) tt-.-a vrapping material is a paper wrap 5 ccrilaining magnesium oxide and.,or magnesium hycroside. has an innerent permeability of less than 45 CORESTA units. and has a net permeabil- ity between about 50 CORESTA units and about 250 CORESTA units; and !G (iii) the packing density of the smokable material is between about 100 mg-cm3 and about 250 mgcm3. and lb) mouthend piece in the form of a filter element whiCh is capable of providing about 40 Is weight percent or less mainstream tobacco smoke pasitculate removal efficiency axially aligned with -~riq end of the rod: and (c) means for providing greater than about 30 percent air dilution to the cigarette. 20 18. The cigarette of Claim 17 comprising ineans for providing greater than about 50 percent air dilution thereto. and wherein a majority of the iclume, of the smokable material is volume ex- panded flue-cured tobacco material. 25 19. The cigarette of Claim 17 wherein the packing density of smokable material is between about 100 mr, crn3 and about 200 mg.,cm3. 20. The 'c;garette of Claim 17 wherein at least about 70 percent by weight of the smokable ma- J0 terial is flue-cured tobacco material. is 40 0 4s CD 55 I~0 ~1D CD r~J Io BATCo document for Legal Services : Health Canada 19 October 1999 0290911 30 10 40 50 60 25 15 -0 5 45 FIG. I 0 25 F 1 G 2 -10 ICD Lr4 BATCo document for Legal Services: Health Canada 19 October 1999