SI8310234A8

SI8310234A8 - Filter for cigaretes

Info

Publication number: SI8310234A8
Application number: SI8310234A
Authority: SI
Inventors: J Luke
Original assignee: Brown & Williamson Tobacco
Priority date: 1982-02-02
Filing date: 1983-02-02
Publication date: 1996-02-29
Also published as: HRP931275B1

Description

BR0WN & VJILLIAMSON TOBACCO CORPORATIONBR0WN & VJILLIAMSON TOBACCO CORPORATION

Louisville, U.S.A.Louisville, U.S.A.

FILTER ZA DUVANSKI DIHTOBACCO BREATH FILTER

Oblast tehnikeTechnical field

Pronalazak je iz oblasti prozvodnje filtera za cigarete(MKP A 24C 5/50).The invention relates to the field of manufacture of cigarette filters (MKP A 24C 5/50).

Tehnički problemTechnical problem

Tehnički problem koji se rešava ovim pronalaskom je u torne kako konstruisati filter za duvanski dim da bi se omogučilo poboljšanje kvaliteta duvanskog dima koji dolazi u usta pušača uz istovremeno uklanjanje štetnih sastojaka iz njega.A technical problem to be solved by this invention is how to construct a tobacco smoke filter in order to allow the quality of the tobacco smoke that enters the mouth of the smoker to be improved while removing harmful ingredients from it.

Stanje tehnikeThe state of the art

Več su činjeni mnogobrojni pokušaji da se filteri za cigarete tako konstruišu da se omoguči ulazak ventilacionog vazduha u kanale koji se pružaju na periferiji filtera do onog kraja filtera koji ide u usta pušača i koji služe da prenesu vazduh do usta pušača bez mešanja vazduha unutar filtera sa duvanskim dimom koji ide kroz filter, Takav način ventilacije filtera za cigarete se naziva odvojena periferna ventilacija Ovakvi filteri poboljšavaju kvalitet duvanskog dima koji dospeva u usta pušača, ali imaju nedostatke koji se sastoje u torne što poboljšanje kvaliteta (ukusa) dima ima za posledicu manje efikasno otklanjanje štetnih sastojaka i obrnuto.Many attempts have already been made to design cigarette filters to allow ventilation air to enter the ducts provided at the periphery of the filter to that end of the filter that goes into the mouth of the smoker and which serve to convey air to the mouth of the smoker without mixing the air within the filter with the This type of cigarette filter ventilation is called separate peripheral ventilation. These filters improve the quality of the tobacco smoke that enters the smoker's mouth, but have disadvantages that consist in fumes, which results in less effective smoke (taste). elimination of harmful ingredients and vice versa.

- 2 Opis rešenja tehničkog problema sa popisom i kr-~:‘;kim opisom slika načrta- 2 Description of a solution to a technical problem with the inventory and a short description of the design drawings

Navedeni tehnički problem rešava se novom konstrukcijom filtera za duvanski dim, koji kao i poznati filteri obuhvata telo filtera od materijala za filtriranje i najmanje jedan kanal za prolaz vazduha koji se pruža duž tela filtera sa otvorenim krajevima na obe strane tela filtera kao i omotač postavljen oko filtera, a razlikuje se od poznatih filtera po torne što su na omotaču predvideni otvori koji omogučavaju ulaz struje vazduha direktno u unutrašnjost tela filtera i to odvojeno odvazdušne struje koja ulazi kroz navedeni kanal. Celishodno je da bar jedan kanal za vazduh bude krači od tela filtera i da se pruža od jednog njegovog kraja.Celishodno je da omotač bude izveden sa prvim i drugim ventilacionim otvorima za prolaz prve i druge struje vazduha posebno. Podesno je da drugi ventilacioni otvori budu smešteni iznad onog dela tela filtera u kom se ne nalaze kanali za vazduh. Pogodno je takode da kanali za protok vazduha budu formirani od žljebova na površini tela filtera i omotača filtera.This technical problem is being solved by a new design of a tobacco smoke filter, which, like known filters, comprises a filter body made of filter material and at least one air duct extending along the filter body with open ends on both sides of the filter body as well as a wrapper placed around the filter body. filters, which differs from the well-known filter filters, which have openings on the sheath that allow air to flow directly into the interior of the filter body, separately from the air flow entering the said channel. It is advisable for at least one air duct to be shorter than the filter body and extend from one end thereof. It is advisable for the sheath to be provided with the first and second ventilation openings for the passage of the first and second air currents separately. It is appropriate for other ventilation openings to be located above that part of the filter body that does not have air ducts. It is also convenient for the air flow ducts to be formed by grooves on the surface of the filter body and the filter sheath.

Upotrebom filtera prema pronalasku postiže se neočekivano poboljšanje ukusa glavne struje dimau odnosu na ukus dima koji se postiže kada se primenjuje filter koji ima samo ventilacione kanale.The use of the filter according to the invention achieves an unexpected improvement in the taste of the main smoke current relative to the smoke taste achieved when a filter having only ventilation ducts is applied.

Pronalazak je bliže objašnjen sa pozivom na priložene crteže na kojima:The invention is further explained with reference to the accompanying drawings in which:

Slika 1 prikazuje delimičan izgled, u aksijalnom preseku, cigarete sa filterom;Figure 1 shows a partial view, in axial section, of filter cigarettes;

Slika 1a prikazuje izgled poprečnog preseka polovine cigarete sa slike 1 uzet duž linije A-A na toj slici;Figure 1a shows a cross-sectional view of half the cigarette of Figure 1 taken along line A-A in that figure;

Slika 2 prikazuje drugu varijantu filtera prema pronalasku;Figure 2 shows another embodiment of the filter according to the invention;

Slika 3 prikazuje, delimično u aksijalnom preseku, dalju varijantu filtera prema pronalasku.Figure 3 shows, partly in the axial section, a further variant of the filter according to the invention.

- 3 Cigareta prema slici 1 obuhvata stub 1 od sečenog duvana obavijenog papirom 2 i filter 3 koji se sastoji od tela 4 filtera od fibroznog celuloznog acetata. Na periferiji tela 4 filtera izvedeni su žljebovi 5 - videti takode sliku la. žljebovi 5 su otvoreni na kraju tela 4 filtera koji ide u usta pušača i pružaju se paralelno sa osom tela otprilike pola dužine tog tela.Uobičajeni metod pravljenja tih žljebova je u torne da se telo 4 filtera izlaže dejtvu toplote u odredenim kalupima (takav jedan postupak je opisan ..u. UK patentu br. 1,507,765. Zaptivanje zidova žljebova 5 može da se osigura primenom zaptivnih materijala, kao što je na primer polietilen.- 3 The cigarette according to Figure 1 comprises a pillar 1 of cut tobacco wrapped in paper 2 and a filter 3 consisting of a body 4 of fibrous cellulose acetate filters. Grooves 5 are made on the periphery of the body of the 4 filters - see also figure la. the grooves 5 are open at the end of the body 4 of the filter which goes into the mouth of the smoker and extend parallel to the axis of the body about half the length of that body. The usual method of making these grooves is in the towers that the body 4 of the filter is exposed to heat in certain molds (such a single procedure is described in U.S. Patent No. 1,507,765 The sealing of the groove walls 5 can be ensured by the use of sealing materials such as polyethylene.

Omotač 7 služi da se pričvrsti filter 3 za duvanski stub 1 cigarete. Svojim delom koji je oznad žljebova 5 omotač 7 ograničava zajedno sa zidovima žljebova 5 kanale 8 za protok vazduha. U omotaču 7 je izvedeno dva reda ventilacionih otvora 9 i 10. Kao što je označeno na sl. 1 niz otvora 9 okružuje telo 4 filtera 3 u delu u kojem se pružaju žljebovi 5, pri čemu je bar jedan od otvora 9 povezan sa svakim od kanala 8.Sheath 7 serves to attach filter 3 to the tobacco column 1 of the cigarette. By its part, which is the designation of the grooves 5, the sheath 7 restricts together with the groove walls 5 the channels 8 for air flow. In the sheath 7 there are two rows of ventilation openings 9 and 10. As indicated in FIG. 1, a series of openings 9 surrounds the body 4 of the filters 3 in the part where grooves 5 extend, at least one of the openings 9 being connected to each of the channels 8.

Niz otvora 10 okružuje deo tela 4 u kojem se ne pružaju žljebovi 5.A series of openings 10 surrounds a portion of the body 4 in which grooves 5 do not extend.

Otvori 9 i 10 mogu po želji da budu u obliku mikro-perforiranih delova omotača 7.The openings 9 and 10 may optionally be in the form of micro-perforated portions of the sheath 7.

Takode je moguce da omotač .7 okružuje osnovni omotač koji je propustljiv za vazduh u kom slučaju omotač 7 služi kao spoljni sloj u kojem su predvideni ventilacioni otvori.It is also possible that the cover .7 surrounds the air-permeable base cover in which case the cover 7 serves as the outer layer in which the ventilation openings are provided.

Dalja alternativa je da završni omotač 7 obuhvata nepropustljiv osnovni omotač filtera u kom slučaju taj osnovni omotač mora da ima otvore koji če biti uskladeni sa otvorima 10 u završnom omotaču 7. Podesno je da u tom slučaju perforacije na oba omotača budu formirane istovremeno mehanički ili laserskim bušenjem.A further alternative is that the end sheath 7 includes an impermeable base filter sheath in which case that base sheath must have openings that will be aligned with the openings 10 in the end sheath 7. In this case, perforations on both sheaths may be formed simultaneously mechanically or by laser. by drilling.

Kada se puši cigareta sa sl. 1 okolni vazduh se uvlači kroz otvore 10 direktno u telo 4 filtera 3 i meša se sa duvanskim dimom koji prolazi kroz filter. Taj vazduh se takode posebno uvlači kroz otvore 9 i ulazi u kanale 8 prolazeči kroz njih do njihovihWhen smoking a cigarette of FIG. 1 the surrounding air is drawn through the openings 10 directly into the body 4 of the filter 3 and mixed with the tobacco smoke passing through the filter. This air is also drawn in separately through the openings 9 and enters channels 8 by passing through them to theirs

- 4 izlaznih krajeva bez mešanja sa duvanskim dimom.- 4 outlets without mixing with tobacco smoke.

Filter prikazan na sl. 2 čije je telo označeno sa 11 može da se upotrebi umesto tela 4 filtera sa sl.1. Telo 11 filtera je izvedeno sa više podjednako razmaknutih uzdužnih žljebova 12, koji su otvoreni na kraju tela 11 koji ide u usta pušača i pružaju se po dužini manjoj od dužine filtera. U delu tela 11 koji nema žljebove 12 izveden je dubok prstenasti, obodni kanal 13. Uzdužni žljebovi 12 i kanal 13 mogu pogodno da se formiraju istim postupkom kao i žljebovi 5. Kada se telo 11 filtera inkorporiše u cigaretu, ono je obmotano omotačem koji omogučava ulazak prve struje vazduha direktno u kanale za protok vazduha ograničene zidovima žljebova 12 i unutrašnjom površinom omotača i ulazak druge odvojene srtuje vazduha u kanal 13. Druga struja vazduha ulazi direktno u unutrašnjost tela 11 filtera uglavnom kroz donji bočni zid kanala 13.The filter shown in FIG. 2 whose body is marked with 11 can be used instead of the body of the 4 filters of Fig. 1. The body 11 of the filter is made with more equally spaced longitudinal grooves 12, which are open at the end of the body 11 that goes into the mouth of the smoker and extend along a length smaller than the length of the filter. In the part of the body 11 which has no grooves 12, a deep annular, circumferential groove 13 is formed. The longitudinal grooves 12 and the groove 13 can be conveniently formed in the same way as grooves 5. When the filter body 11 is incorporated into the cigarette, it is wrapped in a wrapping enabling the entry of the first stream of air directly into the airflow ducts bounded by the groove walls 12 and the inner surface of the sheath and the entry of the second separate air enters the duct 13. The second stream of air enters directly into the interior of the filter body 11 mainly through the lower lateral wall of the duct 13.

Ako je omotač koji okružuje telo 11 filtera izveden sa nizom otvora kao što su otvori 9 na sl.1 u delu u kojem su žljebovi 12 onda se primenom zaptivne mase sprečava da vazduh ulazi direktno u unutrašppst.tela 11 filtera več samo u te žljebove. Alternativno telo 11 može biti obmotano nepropustljvim omotačem od termoplastične mase pre pravljenaj žljebova 12 i kanala 13 primenom pritiska na povišenoj temperaturi.If the envelope surrounding the filter body 11 is made with a series of openings such as openings 9 in FIG. 1 in the part where the grooves 12 are, then applying a sealant prevents air from entering directly into the inner bodies of the filters 11 only into these grooves. Alternative body 11 may be wrapped in a thermoplastic impermeable sheath prior to making grooves 12 and channels 13 by applying pressure at elevated temperature.

U tom slučaju pravljenje komparativno plitkih žljebova 12 ne oštečuje nepropustljivi omotač, dok u kanalu 13 ne ostaju ostaci tog omotača. Tako zidovi žljebova 12 su nepropustljvi za vazduh , a bočni zidovi kanala 13 su propustljivi za vazduh.In this case, making comparatively shallow grooves 12 does not damage the impermeable sheath, while no remains of that sheath remain in channel 13. Thus, the groove walls 12 are airtight and the side walls of duct 13 are airtight.

Slika 3 prikazuje drugu varijantu filtera prema pronalasku, čije je telo označeno sa 14 i može biti upotrebljeno umesto tela 4 sa sl.1 - Telo 14 je izvedeno sa više,podjednako razmaknutih spiralnih žljebova 15 koji se pružaju od kraja filtera koji ide u usta pušača i formiraju se kao što je več opisano. Telo 14 takode ima na delu izvan žljebova 15 otvore 16 ,koji se pružaju radijalno na unutra od periferne površine tela filtera Otvori 16 mogu biti formirani mehanički ili laserom, a njihovo formiranje celishodno se vrši posle spajanja tela 14 filtera sa duvanskim stubom cigarete tako da se time istovremeno stvaraju i otvori u omotaču filtera.3 shows a second variant of the filter according to the invention, the body of which is marked 14 and can be used in place of the body 4 of FIG. 1 - The body 14 is made of several equally spaced grooves 15 extending from the end of the filter extending into the mouth of the smoker. and are formed as already described. The body 14 also has openings 16 outside the grooves 15 extending radially inwards from the peripheral surface of the filter body. The openings 16 can be formed mechanically or by laser, and their formation is effected after the connection of the filter body 14 with the tobacco cigarette stem so that thus simultaneously creating openings in the filter jacket.

- 5 Mogu biti primenjeni i filteri koji se sastoje od dva elementa od kojih prvi,koji ide u usta pušača, ima žljebove koji idu do usta pušača i drugi, koji ima otvore koji omogučuju ulazak vazduha u unutrašnjost tog elementa. Ako su ti elementi obmotani pos ebnim omotačima, onda je pogodno da omotač prvog elementa bude nepropustljiv za vazduh , a omotač drugog elementa propustljiv.- 5 Filters consisting of two elements may also be applied, the first of which goes into the mouth of the smoker having grooves extending to the mouth of the smoker and the second which has openings allowing air to enter the interior of that element. If these elements are wrapped in special envelopes, then it is appropriate that the envelope of the first element is airtight and the envelope of the second element is permeable.

Perforacije na crtežima su uveličane u cilju ilustracije.The perforations in the drawings are magnified for the purpose of illustration.

Claims

A tobacco smoke filter comprising the body 4 of a duct 3 filter 8, characterized in that the openings (9) in the sheath (7) are connected to the grooves (5), while the openings (10), which are made in the part of the sheath. (7) surrounding the part of the body (4) of the filter which is free of any (5) in relation to the interior of that part of the body (4) of the filter.

Filter according to claim 1 and variant I, characterized in that in one part of the filter body (11) longitudinal grooves (12) are shorter than the length of that body and in the other part of the body (11) in which these grooves do not extend is the annular. circumferential channel (13).

Filter according to claim 1 and variant II, characterized in that the spiral grooves (15) and the openings (16) extend radially inwards from the peripheral surface of the body (1) in the filter body (14). 14).