EP0475580A1 - Article à fumer - Google Patents

Article à fumer Download PDF

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Publication number
EP0475580A1
EP0475580A1 EP91307224A EP91307224A EP0475580A1 EP 0475580 A1 EP0475580 A1 EP 0475580A1 EP 91307224 A EP91307224 A EP 91307224A EP 91307224 A EP91307224 A EP 91307224A EP 0475580 A1 EP0475580 A1 EP 0475580A1
Authority
EP
European Patent Office
Prior art keywords
wrapper
stock
ply
plies
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91307224A
Other languages
German (de)
English (en)
Inventor
Christopher George Drewett
Brian Chester Chard
Colin Dennis Luton
Brian William Attwood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Tobacco Company of Great Britain and Ireland Ltd
Imperial Tobacco Group Ltd
Original Assignee
Imperial Tobacco Company of Great Britain and Ireland Ltd
Imperial Tobacco Ltd Great Britain
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Imperial Tobacco Company of Great Britain and Ireland Ltd, Imperial Tobacco Ltd Great Britain filed Critical Imperial Tobacco Company of Great Britain and Ireland Ltd
Publication of EP0475580A1 publication Critical patent/EP0475580A1/fr
Withdrawn legal-status Critical Current

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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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers

Definitions

  • This invention concerns smoking articles such as cigarettes which use a wrapper normally comprising fibres of organic origin mixed with inorganic fillers and sometimes containing amounts of soluble chemical additives, binding agents and processing aids.
  • a conventional wrapper In the case of a cigarette a conventional wrapper would be predominantly comprised of wood and/or textile fibres mixed with inorganic filler such as calcium carbonate. These materials may be subject to a refining process and mixed in various proportions such that the wrapper properties can be widely varied to confer on the cigarette different characteristics such a smoulder rates, air permeability, ash quality, appearance and taste.
  • Cigarette paper technology has been developed sufficiently to establish relationships between paper parameters such as filler/fibre ratios and properties such as inherent permeability and opacity. These relationships are well known, as indeed are many of the relationships between paper properties and the performance of cigarettes constructed with these papers.
  • cigarette papers constructed in the conventional way are not homogeneous mixtures of fillers and fibre throughout their cross section.
  • the distribution of the filler tends to change from one side to the other due to the nature of the wet draining process and filtration effect of the fibre.
  • conventional papers have normally a degree of asymmetrical fibre/filler mix which has a moderate but important effect on their performance especially in relation to ash formation.
  • US Patent 3395714 describes the use of two thin sheets to form a composite wrapper wherein the outer sheet is a conventional cigarette paper and the inner sheet in contact with the tobacco is a heat insulating plastic film with a melting point below 400°C.
  • the specification also proposes manufacturing as two sheets or as a composite with two sheets glued together or by depositing the plastic film as a solution upon the sheet of cigarette paper.
  • This patent proposes benefits for these systems which benefits include; changes in the low temperature distillation zone affecting smoke taste, reduced tobacco consumption between puffs and reduced emission of sidestream smoke.
  • US Patent 3633589 proposes a composite wrapper composed of two thin sheets both consisting of vegetable fibre stock so as to provide the benefits claimed for US 3395714 without the disadvantages of plastic films.
  • US 3633589 provides no teaching as to the method by which the two thin sheets are linked but indicates that the composite wrapper is constructed out of independently manufactured papers described as conventional cigarette paper outer sheet and a calendered inner sheet which is practically impervious to air.
  • the present invention seeks to utilise the advantages of a multiple layer sheet whilst at the same time overcoming the practical difficulties of using double or multi sheet wrappers.
  • it is desired to have the benefit of combining the properties of different paper wrappers without the manufacturing difficulties associated with either laminating sheets in an off-line process or attempting to manufacture cigarettes with two paper wrappers run simultaneously on the cigarette making machine.
  • it is desired to avoid the disadvantages of laminating adhesives.
  • wrapper for smoking articles, which wrapper is formed from two or more discrete webs, which are combined while at least one of the webs is still in its wet stage of formation prior to drying.
  • the webs are formed from different stock and all the webs are in the wet stage of formation prior to drying.
  • a wrapper for a smoking article which wrapper comprises a single paper sheet having two or more plies, each ply being formed from a paper stock, the stocks being applied to each other whilst at least one of the stocks if unformed.
  • the plies are formed from different stocks (stock being the ingredients of the headbox or reservoir) and two plies are provided.
  • one stock is in the form of a discrete web when the other stock is applied in an unformed state and the discrete web is still in its wet stage of formation or both stocks are applied to each other in an unformed state by means of a two-channel headbox.
  • said other component or components are still in the wet stage of formation prior to drying.
  • the wrapper is of low air permeability and preferably said permeability is 10 Coresta or less.
  • the other ply is a filled ply conferring a coriventional appearance on the wrapper, for example the opacity of the wrapper is 60% or more. It may be that the filler of said other ply comprises predetermined amounts of calcium carbonate (up to 50% by weight) or the filler of said other ply comprises predetermined amounts of selected fillers, e.g. Mg(OH)2, Al2O3, LiOH and high surface area CaCO3.
  • the total basis weight of the wrapper is less than 50 gm ⁇ 2 but in other arrangements the total basis weight of the wrapper is less than 35 gm ⁇ 2.
  • one or more of the plies may contain a burn retardant such as ammonium phosphate or a burn enhancer such as a soluble salt of a group I or group II metal, maybe up to 10% by weight.
  • a burn retardant such as ammonium phosphate or a burn enhancer such as a soluble salt of a group I or group II metal
  • a smoking article comprising a rod of smoking material and a wrapper having any of the above features.
  • a method of making a wrapper for a smoking article which wrapper comprises a single paper sheet having two or more plies each ply being formed from a paper stock said method comprising the step of applying the stock for at least one of said plies while it is unformed.
  • multiplex as used in this specification is intended to cover sheets which comprise two or more plies or layers wherein either at least one ply is in the partially formed wet stage prior to drying when the two or more plies are combined or superposed or the stocks are applied to each other whilst at least one of the stocks is unformed in other words one of the stocks is applied to the remainder without said one stock forming a discrete web.
  • adhesion between the plies is achieved by the fibre bonding inherent in the papermaking process.
  • these methods of formation introduce an interaction between the two or more plies, which interaction can have a surprising effect on the air permeability of the final multiplex sheet.
  • the component plies may be formed from different stocks arising from separate headboxes or reservoirs on a single wire or multi-wire machine.
  • the multiplex sheet has been formed from two stocks, one of which provides the characteristics of highly impermeable paper and the other of which provides some of the characteristics of conventional cigarette paper, particularly in relation to appearance.
  • One particular embodiment of the present invention provides a duplex paper for use in the manufacture of cigarettes, which paper has been formed from two or more stocks one of which has a composition that provides the characteristics of a highly impermeable paper and the other of which is stock suited to the manufacture of chalk filled cigarette papers.
  • wrappers of smoking articles having unusual non-homogeneous cross-sectional characteristics there are many uses for wrappers of smoking articles having unusual non-homogeneous cross-sectional characteristics, but one of particular interest is for use with the product of our co-pending British Application No 8901579.6 of 25 January 1989, which forms the basis for European Application No 90300750.8.
  • a paper can be made which will readily self-extinguish the cigarette but such papers are normally of the papirossi type having a high fibre density and low opacity characteristic of impermeable paper sheets.
  • the highly impermeable, low opacity paper could be overwrapped with conventional cigarette paper.
  • the disadvantage of this proposal is that the overwrapping must be done on the cigarette making machine or the two wraps must be laminated thus suffering from the disadvantages outlined above.
  • Double wrapping has been employed commercially in the U.S.A. by Philip Morris on the Virginia Superslims brand, but in this construction it results in a total paper basis weight of 70 gm ⁇ 2 compared to conventional papers at about 25 gm ⁇ 2.
  • the two components of the double wrap must be exceptionally low basis weight and may be low in strength which would therefore be difficult and in some cases impossible to make or use commercially as a single sheet.
  • the problem can be solved by forming a multiplex paper in which stock for highly impermeable low opacity paper is applied to a partially formed web made from stock of a more conventional cigarette paper or vice-versa.
  • the multiplexsheet having differing characteristics from one side of the sheet to the other.
  • the conventional appearance can be placed on the outside of the cigarette with a lower opacity reverse side against the tobacco, thus providing the characteristics required for the product without detracting from the appearance, and without staining etc.
  • the paper characteristics may be designed to modify taste, burn rate, sidestream smoke delivery, ignition proclivity or even to achieve changes in appearance.
  • the construction can provide opportunities to include paper additives or fillers with beneficial effect such as improvements to the ideas contained in the patent literature.
  • the outer surface may include a disproportionately high level of calcium carbonate of normal or enhanced specific surface area such as is suggested in GB Patent 2191930A while the inner surface provides control of air permeability, strength and staining, and where this construction has as its objective reductions in sidestream smoke.
  • wrapper modifications have been suggested in the literature to improve taste and reduce smoke deliveries as for example in US 4225636 and US 4505282 where a carbon inner liner is proposed.
  • a similar objective can be achieved with a multiplex wrapper where the external surface provides conventional appearance and -the internal surface contains a suitable proportion of activated carbon.
  • the resulting wrapper might even be designed to provide a suitable combustion source to meet the requirements of one of the embodiments described in co-pending UK Patent Application No 8901579.6.
  • the system might also be designed with a low absorbing inner surface as a solution to yellow spotting during storage of cigarettes without a need for double wraps which has been proposed by at least one commercial paper manufacturer.
  • a multiplex wrapper for cigars may also be devised as a means of replacing the binder and overwrap currently used in the manufacture of the majority of cigars.
  • the advantage of a multiplex construction is to provide scope in the formulation of the two surfaces not achievable with conventional paper made wrappers in order to enable the desired appearance, burning properties and taste to be achieved.
  • multiplex papers discussed in this specification are formed from stocks which are made up in accordance with recognised paper making techniques and which can contain, either separately or as chosen mixtures, textile fibres (such as flax or hemp), hard wood fibres, soft wood fibres and other fibres (such as esparto).
  • Figure 1a shows a basic arrangement for forming a two ply multiplex cigarette paper according to our co-pending European Application No 90305610.9.
  • a first headbox 1 containing a first stock forms a first web on a first Fourdrinier wire 2.
  • a second headbox 3 containing a second stock forms a second web on a second Fourdrinier wire 4. The two webs are brought together while at least one of the webs is still in its wet stage prior to drying.
  • Figure 1b shows an extension of the Figure 1a arrangement in which a third headbox 5 containing a third stock forms a third web on a third Fourdrinier wire 6.
  • the second and third webs are combined whilst say web 3 is still in its wet stage and this pair of webs is combined with the first web to form a three ply multiplex cigarette paper.
  • Figure 1c shows a series of rotary formers 7, 8, 9 and associated vats 10, 11, 12 containing the stocks. Each former 7, 8, 9 produces a partially formed web and the webs are combined on wire 13.
  • Figure 1d is similar to Figure 1c in that there are rotary formers 7, 8, 9 but each former is associated with a pressure former 14, 15, 16 which forms web on the rotary former.
  • a Fourdrinier wire 17 and headbox 18 are used in conjunction with a rotary former 19, vat 20 and wire 21 to produce a two ply multiplex cigarette paper by combining two discrete webs whilst one web at least is still in its wet stage of formation prirr to drying.
  • FIG. 1f there is shown a first Fourdrinier wire 22 and headbox 23 for forming a first discrete web and a second Fourdrinier wire 24 and headbox 25 for forming a second discrete web.
  • a transfer mechanism 26 is provided to divert the first web so as to be combined with the second web between rollers 27 to form a two ply multiplex cigarette paper 28.
  • FIG. 2 One method of producing a cigarette paper according to the present invention is shown in Figure 2.
  • a single Fourdrinier wire 30 and a first headbox 31 containing a first stock A partially formed web is formed on the wire 30 and passes beneath a secondary headbox 32 which applies a layer of second stock directly onto the first web.
  • a two ply multiplex cigarette paper is thus formed without actually forming a discrete second web.
  • a liquid removal section 33 is provided so as that the first web reached the secondary headbox 32 either in a partially formed wet state or in a dry state.
  • a further liquid removal section 33 is provided to treat the combined sheet.
  • the Figure 3 arrangement has the headbox 31 and Fourdrinier 30 wire of the Figure 2 arrangement but for the second stock a flow box 35 employing the Coanda Effect is used.
  • the second stock is gently applied onto the partially formed first ply without disturbing the formation of the first ply.
  • a third flow box 36 similar to flow box 35 is shown and of course other flow boxes could also be added if more than three plies were required.
  • water removal stations 33, 34 are provided at locations dependent on the desired paper properties.
  • Figure 4 shows another suitable arrangement in which a sloping forming wire 37 is used in conjunction with forming boxes 38, 39 over which a multi-layer headbox 40 is fitted.
  • the equipment is useful for producing non woven materials and can operate at low stock consistencies and at modest speeds.
  • the second stock is applied to the first partially formed web but clearly does not form a discrete web before the application to the first web.
  • a rotary forming roll 41 is used in conjunction with a two component pressure former 42. Again the second stock is applied to the partially formed first web without the stage of forming a discrete second web.
  • Figure 6 is similar in principal to the arrangement in Figure 5 except that a standard forming wire 43 is employed instead of the rotary forming roll 41.
  • the Figure 7 arrangement is a modification of the Figure 6 arrangement except that separate pressure formers 44, 45, 46 are used in series. Of course any number of pressure formers can be used.
  • Figure 8 there is an arrangement very similar to Figure 2 in that there is provided a Fourdrinier wire 30 and first and second headboxes 31, 32. Additionally there is an on-top forming arrangement comprising a second wire 48 and an upward water removal arrangement 49.
  • Figure 9 shows apparatus comprising a twin wire former comprising two wires 50, 51 and a multichannel headbox 52.
  • a twin wire former comprising two wires 50, 51 and a multichannel headbox 52.
  • the separate stocks being applied to each other simultaneously and then the partially formed sheet being retained between the two wires 50, 51.
  • the whole paper sheet is thus formed in one action whilst still retaining the properties of the separate plies.
  • the apparatus has been found to work best at very high speeds.

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  • Paper (AREA)
EP91307224A 1990-08-09 1991-08-06 Article à fumer Withdrawn EP0475580A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909017451A GB9017451D0 (en) 1990-08-09 1990-08-09 Improvements to smoking articles
GB9017451 1990-08-09

Publications (1)

Publication Number Publication Date
EP0475580A1 true EP0475580A1 (fr) 1992-03-18

Family

ID=10680386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91307224A Withdrawn EP0475580A1 (fr) 1990-08-09 1991-08-06 Article à fumer

Country Status (3)

Country Link
EP (1) EP0475580A1 (fr)
FI (1) FI913763A (fr)
GB (1) GB9017451D0 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009109433A1 (fr) * 2008-03-07 2009-09-11 British American Tobacco (Investments) Limited Papier pour filtre ou papier de manchette pour articles à fumer
WO2009109427A1 (fr) * 2008-03-07 2009-09-11 British American Tobacco (Investments) Limited Enveloppe pour tiges de matière à fumer
US9833021B2 (en) 2014-10-02 2017-12-05 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
KR20180089537A (ko) * 2016-05-20 2018-08-08 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20180090897A (ko) * 2016-05-20 2018-08-13 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20180097489A (ko) * 2018-08-23 2018-08-31 태영산업 주식회사 담배용 베이스지관의 제조방법
CN113163856A (zh) * 2018-12-07 2021-07-23 日本烟草产业株式会社 非燃烧加热型吸烟物品以及电加热型吸烟系统

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2163008A5 (fr) * 1971-11-24 1973-07-20 Olin Corp
US4012281A (en) * 1975-03-04 1977-03-15 Johnson & Johnson Wet laid laminate and method of manufacturing the same
EP0133575A1 (fr) * 1983-08-08 1985-02-27 Kimberly-Clark Corporation Enveloppe d'article pour fumer ayant une tendance réduite à l'ignition et article pour fumer
FR2619994A1 (fr) * 1987-09-03 1989-03-10 British American Tobacco Co Perfectionnement concernant des articles a fumer
EP0375844A2 (fr) * 1988-11-30 1990-07-04 JULIUS GLATZ GmbH Enveloppe pour article à fumer
EP0380324A2 (fr) * 1989-01-25 1990-08-01 Imperial Tobacco Limited Articles à fumer
EP0403129A2 (fr) * 1989-06-12 1990-12-19 Philip Morris Products Inc. Papier à cigarette multicouche pour la réduction de l'émission latérale de fumée
EP0407022A2 (fr) * 1989-05-26 1991-01-09 Imperial Tobacco Limited Enveloppe pour article à fumer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2163008A5 (fr) * 1971-11-24 1973-07-20 Olin Corp
US4012281A (en) * 1975-03-04 1977-03-15 Johnson & Johnson Wet laid laminate and method of manufacturing the same
EP0133575A1 (fr) * 1983-08-08 1985-02-27 Kimberly-Clark Corporation Enveloppe d'article pour fumer ayant une tendance réduite à l'ignition et article pour fumer
FR2619994A1 (fr) * 1987-09-03 1989-03-10 British American Tobacco Co Perfectionnement concernant des articles a fumer
EP0375844A2 (fr) * 1988-11-30 1990-07-04 JULIUS GLATZ GmbH Enveloppe pour article à fumer
EP0380324A2 (fr) * 1989-01-25 1990-08-01 Imperial Tobacco Limited Articles à fumer
EP0407022A2 (fr) * 1989-05-26 1991-01-09 Imperial Tobacco Limited Enveloppe pour article à fumer
EP0403129A2 (fr) * 1989-06-12 1990-12-19 Philip Morris Products Inc. Papier à cigarette multicouche pour la réduction de l'émission latérale de fumée

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Tappi Journal, Vol. 71, No. 10, October 1988, Norcross, GA, USA, pages 155-158; P. DUNN: "Multi-ply sheet formation on inclined-wire formers". *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009109427A1 (fr) * 2008-03-07 2009-09-11 British American Tobacco (Investments) Limited Enveloppe pour tiges de matière à fumer
AU2009221424B2 (en) * 2008-03-07 2013-08-15 British American Tobacco (Investments) Limited Plug wrap or tipping paper for smoking articles
WO2009109433A1 (fr) * 2008-03-07 2009-09-11 British American Tobacco (Investments) Limited Papier pour filtre ou papier de manchette pour articles à fumer
US10278428B2 (en) 2014-10-02 2019-05-07 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
US9833021B2 (en) 2014-10-02 2017-12-05 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
USD805686S1 (en) 2014-10-02 2017-12-19 Digirettes, Inc. Vaping device
USD805687S1 (en) 2014-10-02 2017-12-19 Digirettes, Inc. Vaping device tank
USD863676S1 (en) 2014-10-02 2019-10-15 Digirettes, Inc. Vaping device tank
USD857985S1 (en) 2014-10-02 2019-08-27 Digirettes, Inc. Vaping device
US10299513B2 (en) 2014-10-02 2019-05-28 Digirettes, Inc. Disposable tank electronic cigarette, method of manufacture and method of use
KR20190116572A (ko) * 2016-05-20 2019-10-14 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20180095080A (ko) * 2016-05-20 2018-08-24 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20190079715A (ko) * 2016-05-20 2019-07-05 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20180091927A (ko) * 2016-05-20 2018-08-16 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20180090897A (ko) * 2016-05-20 2018-08-13 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20180089537A (ko) * 2016-05-20 2018-08-08 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20210082279A (ko) * 2016-05-20 2021-07-02 니코벤처스 트레이딩 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20210148416A (ko) * 2016-05-20 2021-12-07 니코벤처스 트레이딩 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20220119760A (ko) * 2016-05-20 2022-08-30 니코벤처스 트레이딩 리미티드 흡연 가능 재료를 가열하기 위한 장치에 사용하기 위한 물품
KR20180097489A (ko) * 2018-08-23 2018-08-31 태영산업 주식회사 담배용 베이스지관의 제조방법
CN113163856A (zh) * 2018-12-07 2021-07-23 日本烟草产业株式会社 非燃烧加热型吸烟物品以及电加热型吸烟系统
CN113163856B (zh) * 2018-12-07 2023-08-18 日本烟草产业株式会社 非燃烧加热型吸烟物品以及电加热型吸烟系统

Also Published As

Publication number Publication date
FI913763A0 (fi) 1991-08-08
GB9017451D0 (en) 1990-09-26
FI913763A (fi) 1992-02-10

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