DK155909B

DK155909B - SPIRAL ROLLED TOBACCO PRODUCT WITH DOUBLE FILTER Mouthpiece

Info

Publication number: DK155909B
Application number: DK328785A
Authority: DK
Inventors: Henrik Guldager Jensen
Original assignee: Skandinavisk Tobakskomp
Priority date: 1985-07-18
Filing date: 1985-07-18
Publication date: 1989-06-05
Also published as: DK328785D0; DE3662326D1; EP0209319B1; DK328785A; EP0209319A1; DK155909C; ATE41289T1

Abstract

In order to obtain a leak-free and mechanically stable joint between the helically wound wrapper (7) and the mouthpiece paper (10a) which surrounds the filter, the latter has been divided into an inner filter plug (4a) abutting against the end face of the bunch (3a) and an outer filter plug (9a) located in extension of the inner plug. An additional, interior mouthpiece paper (5a) surrounds the inner filter plug (4a) and a portion of the bunch (3a), and the wrapper (7) is retained between the two mouthpiece papers (5a, 10a) and supported from inside by the inner filter plug (4a). In the method a double filter plug is first placed between two bunches and an interior mouthpiece paper is applied. A wrapper is rolled around the entire length of the resulting double bunch which is then severed to form two single bunches. A further double filter plug is placed between the single bunches where-upon an exterior mounthpiece paper is applied. Finally the product is severed in the middle.

Description

iin

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Opfindelsen angår et tobaksprodukt af den art, som omfatter en central vikkel med en i skruelinieform forløbende dæksfolie og et filtermundstykke bestående af to i forlængelse af hinanden liggende propdele med om-5 sluttende mundstykpapirer, som fastholder filtermundstykket til viklen med dæksfolien.The invention relates to a tobacco product of the kind comprising a central wrap with a helical cover film and a filter nozzle consisting of two contiguous plug parts with enclosing nozzle papers holding the filter nozzle to the wrapper with the cover film.

Tobaksprodukter af denne art, men med kun en enkelt filterprop kendes under betegnelsen "filtercerutter " og produceres ved en teknik, som frerabyder væsent-10 lige lighedspunkter med produktionen af filtercigaretter, og derfor med en tilsvarende høj produktionshastighed. Til forskel fra en filtercigaret, hvor tobaksindlægget blot er omgivet af et med en længdesøm sammenføjet papirhylster, har en filtercerut både et tilsvarende 15 omblad og uden på ombladet et dæksblad pålagt ved skruevikling (såkaldt spiraloverrulning) af en båndformet tobaksfolie fremstillet af homogeniseret tobak.Tobacco products of this kind, but with only a single filter stopper, are known under the term "filter reroutes" and are produced by a technique which offers significant similarities to the production of filter cigarettes, and therefore at a correspondingly high production rate. Unlike a filter cigarette, in which the tobacco insert is merely surrounded by a longitudinally bonded paper casing, a filter ceramic has both a corresponding cover and outside of the cover a cover blade applied by screw winding (so-called spiral roll) of a ribbon-shaped tobacco film made from homogenized tobacco.

En mangel ved kendte filtercerutter ligger i, at det i praksis er umuligt at opnå fuldstændig tæthed mel-20 lem dæksbladet og mundstykpapiret. Dette hænger sammen med, at tobakken, som for at kunne forarbejdes må være relativt fugtig, svinder eller krymper under lagringen efter fremstillingen, hvorimod mundstykpapiret ikke ændrer sin indvendige dimension. Ved overlapningen og 25 sammenlimningen af dæksbladets kantzoner opstår der også en i skruelinieform forløbende fure i dæksbladets overflade, som i sig selv medfører en utæthed, der forstærkes yderligere ved tobakkens lagringssvind. Under rygningen bevirker de uundgåelige små utætheder, at der 30 langs dæksbladets yderside, dvs. uden om tobaksindlægget, sker en ukontrollabel indsugning af falskluft, som påvirker tobaksnydelsen på uønsket måde.A drawback of known filter routes is that in practice it is impossible to achieve complete density between the cover sheet and the mouthpiece paper. This is due to the fact that the tobacco, which, in order to be processed, must be relatively moist, diminishes or shrinks during storage after manufacture, whereas the mouthpiece paper does not change its internal dimension. During the overlap and bonding of the edge leaf edge zones, a groove-shaped groove also forms in the surface of the leaf blade, which in itself causes a leakage which is further enhanced by the tobacco's storage shrinkage. During the smoking, the inevitable small leaks cause 30 along the outside of the cover sheet, ie. outside of the tobacco insert, an uncontrollable intake of false air occurs which affects the tobacco enjoyment in an undesirable way.

Nærværende opfindelse tager sigte på at afhjælpe den påpegede mangel, og den består i, at den indre 35 propdels mundstykpapir omslutter viklens endeparti indenThe present invention aims to remedy the deficiency pointed out, and it consists in the mouthpiece paper of the inner plug portion enclosing the wrap end portion before

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2 for dæks folien, der strækker sig frem til den indre propdels udadvendende endeflade og er omslutter af den ydre propdels mundstykpapir.2 for the tire foil extending to the outwardly facing end face of the inner plug member and enclosed by the mouthpiece paper of the outer plug member.

I en således opbygget filtercerut er det endeaf-5 snit af dasksfolien, som overlappes af det udvendige mundstykpapir, effektivt støttet indefra af den indre filterpropdel, der udviser en overordentlig høj form- og målfasthed, og som følge heraf vil både den rent geometriske form og yderdiameteren af det pågældende afsnit 10 af dæksfolien forblive uændret under varierende fugtighedsforhold. Risikoen for ukontrollabel indstrømning af falskluft på dette sted under rygningen er dermed elimineret, og der er skabt mulighed for at forsyne cerutten med en fuldt kontrolleret ventilation - med deraf føl-15 gende indvirkning på smagskarakteren - nemlig ved perforering af den ydre propdels mundstykpapir uden for dækfoliens endekant. En yderligere fordel ved opfindelsen er, at forbindelsen mellem det udvendige mundstykpapir og dæksbladet i mekanisk henseende er meget stabil 20 som følge af den indre filterprops understøttende virkning på dæksbladet. De nødvendige ekstra operationer i produktionsgangen er uden videre forenelige med den produktionshastighed, som kan opnås ved fremstilling af et i øvrigt tilsvarende produkt af den kendte art.In a filter compartment thus constructed, the end section of the sheet film overlapped by the outer nozzle paper is effectively supported from the inside by the inner filter plug portion, which exhibits an extremely high shape and target strength, and as a result both the purely geometric shape and the outer diameter of that section 10 of the cover film remains unchanged under varying humidity conditions. The risk of uncontrollable inflow of false air at this spot during smoking is thus eliminated, and the possibility of providing the caterpillar with a fully controlled ventilation - with consequent effect on the flavor - is created, namely by perforating the outer casing mouthpiece paper. the end of the cover film. A further advantage of the invention is that the connection between the outer nozzle paper and the cover blade is mechanically very stable due to the supporting effect of the inner filter plug on the cover blade. The necessary additional operations in the production process are readily compatible with the production speed which can be obtained by producing an otherwise similar product of the known kind.

25 Det skal for fuldstændighedens skyld nævnes, at der fra tysk patentskrift 932 894 kendes en filtercerut af den foran angivne art med to i forlængelse af hinanden liggende filterpropdele, der har hver sit mundstykpapir, som forbinder filtermundstykket med den spiral-30 overrullede vikkel. I dette tilfælde gælder imidlertid, at den først indlagte filterprops mundstykpapir lægges omkring endepartiet af en allerede overrullet vikkel og følgelig ligger omkring det parti af dasksfolien, der støder op til filterproppen og kun er understøttet af 35 indlægstobakken, så at de foran omtalte ulemper ved 325 For the sake of completeness, it is to be noted that German Patent Specification 932 894 discloses a filter ceramic of the aforementioned kind with two adjacent filter plug portions, each having its own mouthpiece paper, which connects the filter nozzle to the coiled roll. In this case, however, the mouthpiece paper of the first-inserted filter stopper is laid around the end portion of an already rolled wrap and, consequently, lies around the portion of the film foil adjacent to the filter stopper and supported only by the insert tray so that the aforementioned drawbacks of 3

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filtercerutter med en enkelt filterprop også vil forekomme ved disse kendte tobaksartikler med dobbelt filter.filter rats with a single filter plug will also occur with these known double filter tobacco articles.

Ved tobaksproduktet ifølge opfindelsen kan den 5 ydre propdel hensigtsmæssigt være længere end den indre, og den ovenfor omtalte eventuelle perforering af det udvendige mundstykpapir, som skal sikre en kontrollabel ventilation, kan da placeres længere borte fra filterets ydre endeflade, hvor perforeringshullerne ikke så let 10 bliver lukket af rygerens læber. Ventilationen kan tilvejebringes ved en teknik, som er helt eller i det væsentlige identisk med en til fremstilling af filtercigaretter anvendt teknik, hvilket muliggør en høj produktionshastighed .In the tobacco product according to the invention, the outer plug portion may conveniently be longer than the inner one, and the above-mentioned possible perforation of the outer mouthpiece paper to ensure controllable ventilation can then be placed further away from the outer end surface of the filter, where the perforation holes are not as easily being closed by the smoker's lips. Ventilation may be provided by a technique which is wholly or substantially identical to a technique used in the manufacture of filter cigarettes, which enables a high production rate.

15 De to filterpropdele kan være fremstillet af samme eller forskellige filtermaterialer. I sidstnævnte tilfælde kan man på enkel måde foretage en justering af den totale filtervirkning, dersom dette skulle vise sig hensigtsmæssigt eller nødvendigt for at imødekomme vari-20 erende smagsønsker hos køberne. Eksempelvis kan et kulfilter og et acetatfilter kombineres.The two filter plug portions may be made of the same or different filter materials. In the latter case, a simple adjustment of the total filter effect can be made if this proves to be appropriate or necessary to accommodate varying tastes of the buyers. For example, a carbon filter and an acetate filter can be combined.

Opfindelsen forklares i det følgende nærmere under henvisning til den helt skematiske tegning, på hvilken 25 fig. la - lh anskueliggør successive stadier i en proces til fremstilling af tobaksproduktet ifølge opfindelsen, fig. 2a - 2c mere specifikt illustrerer tre deloperationer i processen, og 30 fig. 3 viser det færdige produkt i et afbrudt længdesnit og i større skala.The invention will now be explained in more detail with reference to the fully schematic drawing, in which FIG. 1a - 1h illustrate successive stages in a process for producing the tobacco product of the invention; 2a - 2c more specifically illustrate three sub operations in the process, and FIGS. 3 shows the finished product in a discontinuous longitudinal section and on a larger scale.

En endeløs streng 1 (fig. la) bestående af et indlæg af f.eks. revet eller skåret tobak og et af båndtobak fremstillet omblad, som er limet i en langsgående 35 overlapningssøm 2, fremstilles på traditionel måde i etAn endless string 1 (Fig. 1a) consisting of an insert of e.g. grated or cut tobacco and a strip tobacco made of glue, which is glued in a longitudinal overlap 2 are traditionally manufactured in a

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4 ikke vist apparatur og overskæres intermitterende i vikler 3 af forudbestemt længde (fig. Ib). Hver vikkel 3 overskæres derefter på midten, og de to halvdele 3a og 3b fjernes så langt fra hinanden, at der mellem dem kan 5 indlægges en filterprop 4. Filterproppen 4 og de umiddelbart tilstødende længdeafsnit af viklerne 3a og 3b omsvøbes derefter med et første mundstykpapir 5 (fig. lc og fig. 2a).4 is not shown and is intermittently cut into winding 3 of predetermined length (Fig. 1b). Each winding 3 is then cut in the middle and the two halves 3a and 3b are removed so far apart that a filter plug 4 can be inserted between them. The filter plug 4 and the immediately adjacent longitudinal sections of the coils 3a and 3b are then wrapped with a first nozzle paper. 5 (Fig. 1c and Fig. 2a).

Herved er der dannet en dobbeltvikkel 6, se fig.Hereby a double winding 6 is formed, see fig.

10 2b, som i en følgende operation overrulles med en af båndtobak fremstillet dæksfolie 7, som vikles i skrue-linieform sammenhængende i hele dobbeltviklen 6's længde og limes i en overlapningssøm af passende bredde (fig. Id og fig. 2b). Efter renskæring af dasksfolien ved 15 enderne af den overullede dobbeltvikkel 8, deles denne på midten ved et tværgående snit i to enkeltvikler 8a og 8b (fig. le). De to overrullede enkeltvikler trækkes nu aksialt fra hinanden, og mellem dem indlægges en anden filterprop 9 (fig. lf), som umiddelbart derefter 20 omsvøbes med et andet mundstykpapir 10 (fig. lg og fig.10 2b, which in a subsequent operation is rolled over with a tape film 7 made of tape tobacco, which is wound in coil-line form throughout the length of the double winding 6 and glued in an overlap seam of suitable width (Fig. 1d and Fig. 2b). After cleaning the sheet film at the ends of the overwrought double wrap 8, it is divided in the middle by a transverse section into two single coils 8a and 8b (Fig. 1c). The two unrolled single coils are now axially pulled apart, and between them is inserted another filter plug 9 (Fig. 1f), which is immediately thereafter wrapped with another nozzle paper 10 (Figs.

2c). Som vist i fig. 2c kan der i den bane, hvoraf mundstykpapiret 10 dannes, vasre to langsgående rækker af perforeringshuller 11 placeret således i banens bredde, at de efter påsætningen af mundstykpapiret strækker 25 sig rundt om filterproppen 9.2c). As shown in FIG. 2c, in the web from which the mouthpiece paper 10 is formed, two longitudinal rows of perforation holes 11 may be positioned such that the width of the web extends around the filter plug 9 after application of the mouthpiece paper.

Fremstillingsprocessen afsluttes med, at det i fig. lg viste emne overskæres på midten og derved opdeles i to faardige filt er cerutter, hvis indvendige opbygning er anskueliggjort i fig. 3, hvor blandt andet tyk-30 kelsen af daaksfolie og mundstykpapirerne for tydeligheds skyld er vist noget overdrevet i forhold til de øvrige dimensioner.The manufacturing process ends with the fact that in FIG. 1g cut into the middle and thereby divided into two finished felt are ceruts whose internal structure is illustrated in FIG. 3, where, among other things, the thickness of the roofing foil and the mouthpiece papers for clarity is shown somewhat exaggerated in relation to the other dimensions.

Af fig. 3 ses tydeligt, hvorledes dasksfolien 7 i det endeafsnit, hvor den er sammenføjet med det ud-35 vendige mundstykpapir 10a, over en væsentlig del afIn FIG. 3 clearly shows how the sheet film 7 in the end section where it is joined with the outer mouthpiece paper 10a over a substantial portion of the

Claims

A tobacco product of the type comprising a central wrap (3a) having a helical cover film (7) and a filter nozzle consisting of two adjacent plug parts (4a, 9a) with enclosing mouthpiece papers (5a, 10a) which holds the filter nozzle for the wrap with the cover film, characterized in that the nozzle paper (5a) of the inner plug part (4a) encloses the end portion of the wrap (3a) within the cover film (7) extending to the outward end surface of the inner plug part and is enclosed by the outer plug part (9a) nozzle paper (10a).

Tobacco product according to claim 1, characterized in that the outer plug part (9a) nozzle paper DK 155909B (10a) outside the end edge of the cover film (7) has perforation holes (11) for ventilation.

Tobacco product according to claim 1 or 2, characterized in that the outer plug part (9a) is 5 longer than the inner one (4a), whereby a vented product can be produced by normal cigarette making technique.