EP0584957B1 - Zigarette - Google Patents

Zigarette Download PDF

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Publication number
EP0584957B1
EP0584957B1 EP93305909A EP93305909A EP0584957B1 EP 0584957 B1 EP0584957 B1 EP 0584957B1 EP 93305909 A EP93305909 A EP 93305909A EP 93305909 A EP93305909 A EP 93305909A EP 0584957 B1 EP0584957 B1 EP 0584957B1
Authority
EP
European Patent Office
Prior art keywords
filter
embossment
plug wrap
paper
wrap 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.)
Expired - Lifetime
Application number
EP93305909A
Other languages
English (en)
French (fr)
Other versions
EP0584957A1 (de
Inventor
Kazuko c/o Japan Tobacco Inc. Takeda
Motohiko c/o Japan Tobacco Inc. Muramatsu
Takeshi c/o Japan Tobacco Inc. Koyama
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.)
Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
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 Japan Tobacco Inc filed Critical Japan Tobacco Inc
Publication of EP0584957A1 publication Critical patent/EP0584957A1/de
Application granted granted Critical
Publication of EP0584957B1 publication Critical patent/EP0584957B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution

Definitions

  • the present invention relates to a cigarette and, more specifically, to an improvement in plug wrap paper used for a cigarette capable of reducing a variation in the amount of air flow from a filter (filter ventilation).
  • a conventional cigarette filter is cylindrically formed of a fiber filter material such as cellulose diacetate wrapped by a plug wrap paper.
  • a tipping paper is used to connect a filter rod and a tobacco rod.
  • Vented filters each made by the combination of an air-permeable plug wrap paper and a tipping paper having pores formed by means of static electricity, a laser beam, etc. have recently been used widely to allow air to enter through the periphery of the filter and reduce the yield of smoke effusing through the filter rod.
  • the vented filter having the above-described structure, dilution air is inhaled into the smoker's mouth from the outer portion of the mouth end face of the filter, whereas tobacco smoke is inhaled into the mouth from the center portion of the mouth end face.
  • variation in filter ventilation of vented filter cigarettes was researched, and a variety of tests on the filter ventilation was carried out. The following results were obtained.
  • the variation in filter ventilation is correlated with the variation in tightness between the plug wrap paper (or the circumference surface of a filter, in the case where no plug wrap paper is used) and tipping paper, rather than the variation in permeability of materials of the cigarettes.
  • the ventilation area of the permeable plug wrap paper through which dilution air passes varies from product to product, with the result that the filter ventilation cannot be controlled uniformly even though the same material is used.
  • the inventors further carried out a number of tests and have discovered that the filter ventilation is increased and the variation therein is reduced by separating the pores of the tipping paper from the plug wrap paper of the filter by means of an embossment formed on the plug wrap paper and corresponding to the pores.
  • a vented filter cigarette according to the present invention comprises:
  • the embossment creates a slight gap between the tipping paper and the plug wrap paper around the pores, with the result that the tightness between the tipping paper and the plug wrap paper is loosened, the filter ventilation is increased, and the variation in the filter ventilation is decreased.
  • Fig. 1 shows part of a cigarette according to a first embodiment of the present invention.
  • a cigarette 10 comprises a tobacco rod 12 and a filter 14.
  • the filter 14 is made of a fiber filter material 20 such as cellulose diacetate wrapped by a plug wrap paper 18. Further, a tipping paper 16 is used to connect the filter 14 and the tobacco rod 12 with each other.
  • the cigarette 10 Since the cigarette 10 is of a vented filter type, it employs highly permeable plug wrap paper 18 having a Coresta permeability of 1000 or more in order to reduce the yield of smoke flowing out of the mouth end of the filter. Further, the tipping paper 16 has a number of ventilation pores 22 formed thereon in one or plural rows (two rows in this embodiment) or irregularly along the circumferential direction of the cigarette. The pores 22 of the tipping paper 16 can be formed by a known technique using static electricity, a laser beam, etc. With the cigarette 10 of this type, dilution air is inhaled into the smoker's mouth from the outer portion of the mouth end face of the filter, and tobacco smoke from the center portion thereof.
  • a rhombic grid-patterned embossment 24 is formed on the entire surface of the plug wrap paper 18. Since the embossment 24 is printed by means of, for example, a knurling tool, it provides ruggedness all over the plug wrap paper 18.
  • the embossment 24 serves to create a slight gap between the tipping paper 16 and the plug wrap paper 18 around the pores 22, with the result that the tightness between the papers 16 and 18 is loosened, and the permeability of a combination of the pores 22 and the plug wrap paper 18 is improved.
  • the embossment 24 reduces the variation in the air permeability of the combination of the papers 16 and 18. Consequently, the filter ventilation is increased, and the variation in the filter ventilation is decreased.
  • the depth of the pattern of the embossment 24 falls within a range between 0.01 and 1.00 mm, preferably between 0.02 and 0.06 mm. If the depth exceeds the range, a problem in cigarette making can occur, whereas if the depth does not reach the range, the effect of the embossment 24 cannot be obtained sufficiently.
  • the depth of the embossment 24 can be measured by using a three-dimensional surface roughness measuring instrument (SE-3AK manufactured by Kosaka Laboratory Ltd.).
  • the embossment 24 should be disposed such that the surface thereof, which is brought into contact with the pattern press die, faces the tipping paper 16. If the contact surface of the embossment faces the tipping paper 16, the pores 22 of the tipping paper 16 can be separated sufficiently from the plug wrap paper 18 of the filter 14. In the contrary case, the effect of the embossment is slightly lessened as compared to the former case.
  • Fig. 2 shows part of a cigarette according to a second embodiment of the present invention.
  • the elements corresponding to those of the first embodiment shown in Fig. 1 are denoted by the same numerals as those in Fig. 1, and the description thereof is omitted.
  • the embossment 24 of the plug wrap paper 18 is disposed so as to be located along the rows of the pores 22 of the tipping paper 16.
  • the embossment 24 is printed in a band-like region such that the pores 22 of the tipping paper 16 are arranged substantially along the imaginary center line of the region, by means of, for example, a knurling tool.
  • the embossment 24 provides ruggedness in the entire area of the band-like region around the pores 22 of the tipping paper 16.
  • the edge of the embossment 24 should be at least 1 mm apart from either side of the pore rows, that is, L shown in Fig. 3 should be 1 mm or more, preferably L should be 2 mm or more. If the width is less than 1 mm, it is difficult to create a gap sufficiently between the pores 22 and the plug wrap paper 18.
  • the pattern of the embossment 24 is not limited to the rhombic grid-patterned grooves shown in Figs. 1 and 2, which is enlargedly shown in Fig. 3, but can be replaced with various patterns.
  • Fig. 4 shows an embossment 27 having a pattern of a square grid.
  • Figs. 5 and 6 show part of cigarettes according to third and fourth embodiments of the present invention, respectively.
  • the elements corresponding to those of the first and second embodiments shown in Figs. 1 and 2 are denoted by the same numerals as those in Figs. 1 and 2, and the description thereof is omitted.
  • the embossment 24 is formed all over the plug wrap paper 18 as in the first embodiment.
  • the embossment 24 is formed on part of the plug wrap paper 18 as in the second embodiment.
  • the filter 14 has a so-called dual-filter structure including a first filter element 28 having a length of, e.g., 15 mm and a second filter element 29 having a length of, e.g., 10 mm.
  • the first filter element 28 is generally called an acetate filter which is formed of a fiber filter material such as cellulose diacetate wrapped by its own plug wrap paper and serves as a filter plug.
  • the first filter element 28 is arranged inside the plug wrap paper 18.
  • the second filter element 29 is generally called a charcoal filter which is formed of a fiber filter material such as cellulose diacetate containing charcoal wrapped by its own plug wrap paper and serves as a filter plug .
  • the second filter element 29 is also arranged inside the plug wrap paper 18.
  • the first and second filter elements 28 and 29 are integrated with each other as one element by the embossed plug wrap paper 18.
  • the plug wrap paper 18 is therefore called “forming paper”.
  • the terminologies "filter” and "embossed plug wrap paper” used in this specification include the above-described dual-structure filter, the undermentioned triple-structure filter, and the plug wrap paper (forming paper) used in these filters.
  • Figs. 7 and 8 show part of cigarettes according to fifth and sixth embodiments of the present invention, respectively.
  • the elements corresponding to those of the first and second embodiments shown in Figs. 1 and 2 are denoted by the same numerals as those in Figs. 1 and 2, and the description thereof is omitted.
  • the embossment 24 is formed all over the plug wrap paper 18 as in the first embodiment.
  • the embossment 24 is formed on part of the plug wrap paper 18 as in the second embodiment.
  • the filter 14 has a so-called triple-filter structure including first and second filter elements 31 and 32, and an intermediate section 33 formed between them.
  • the first and second filter elements 31 and 32 are generally called an acetate filter which is formed of a fiber filter material such as cellulose diacetate wrapped by its own plug wrap paper and serves as a filter plug.
  • the first and second filter elements 31 and 32 are arranged inside the plug wrap paper 18.
  • the intermediate section 33 is formed by filling a gas absorbent such as activated carbon between the filter elements 31 and 32 separated from each other.
  • the first and second filter elements 31 and 32 and the intermediate section 33 are integrated with one another as one element by the embossed plug wrap paper 18.
  • the tipping paper 16 has two rows of pores 22.
  • the present invention is not limited to this tipping paper but can be applied to tipping paper having a larger number of pores, such as porous tipping paper. Where an though embossment is formed on the plug wrap paper in correspondence with some of the pores of the porous tipping paper, the same advantage can be obtained.
  • a cigarette sample B according to the first embodiment shown in Fig. 1 was prepared by using the plug wrap paper 18 on which the embossment 24 (shown in Fig. 3) having the rhombic grid-pattern was formed, and the other regular members.
  • a cigarette sample A having no embossment, but otherwise substantially the same as the sample B was also prepared.
  • the conditions other than the embossment, for example, the material and the production method were common to the samples A and B under the conditions specified in Table 1.
  • Each cigarette had a length of 84 mm, a filter length 25 mm, a circumference of 25 mm, and a draw resistance of the tobacco rod of 80 mm H 2 O.
  • a cigarette sample D having a dual-filter structure according to the third embodiment shown in Fig. 5 was prepared by using the plug wrap paper 18 on which the embossment 24 (shown in Fig. 3) having the rhombic grid-pattern is formed, and the other regular members.
  • a cigarette sample C having no embossment, but otherwise substantially the same as the sample D was also prepared.
  • the conditions other than the embossment, for example, the material and the production method were common to the samples C and D under the conditions specified in Table 2.
  • Each cigarette had a length of 84 mm, a first filter element length of 15 mm, a second filter element length of 10 mm, a circumference of 25 mm, and a draw resistance of the tobacco rod of 80 mm H 2 O.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Paper (AREA)

Claims (7)

  1. Ventilierte Zigarette mit:
    einem Filter (14), der ein Faserfiltermaterial (20) und ein Stopfenwickelpapier (18) besitzt, das das Faserfiltermaterial umwickelt, wobei das Stopfenwickelpapier (18) eine Coresta-Permeabilität von 1000 oder mehr aufweist;
    einer Tabakstange (12); und mit
    einem Mundstückpapier (16), das zahlreiche Poren (22) besitzt und den Filter und die Tabakstange miteinander verbindet,
    wobei das permeable Stopfenwickelpapier (18) eine Ventilationsfläche aufweist, die mit den Poren (22) korrespondiert und durch die Verdünnungsluft aus den Poren (22) tritt;
    dadurch gekennzeichnet,
    daß in einem Bereich des Stopfenwickelpapiers (18) wenigstens in der Ventilationsfläche eine Prägung (24) aus Nuten in einem Gittermuster gebildet ist.
  2. Zigarette nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Prägung (24) in einem Bereich mit einer Breite von 1 mm oder mehr an jeder Seite der Poren (22) gebildet ist.
  3. Zigarette nach Anspruch 2,
    dadurch gekennzeichnet,
    daß die Prägung (24) in dem Bereich mit einer Breite von 2 mm oder mehr an jeder Seite der Poren (22) gebildet ist.
  4. Zigarette nach Anspruch 3,
    dadurch gekennzeichnet,
    daß die Prägung (24) nahezu über das gesamte Stopfenwickelpapier (18) gebildet ist.
  5. Zigarette nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Prägung (24) eine Tiefe besitzt, die von 0,01 bis 1,0 mm reicht.
  6. Zigarette nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Prägung (24) eine Tiefe besitzt, die von 0,02 bis 0,06 mm reicht.
  7. Zigarette nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Prägung (24) mittels eines Musterpreßstempels geformt ist, und daß die Fläche der Prägung (24), die den Musterpreßstempel kontaktiert hat, zu dem Spitzenpapier (16) weist.
EP93305909A 1992-07-29 1993-07-27 Zigarette Expired - Lifetime EP0584957B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP202202/92 1992-07-29
JP20220292 1992-07-29
JP24238792A JP3204549B2 (ja) 1992-07-29 1992-09-10 シガレット
JP242387/92 1992-09-10

Publications (2)

Publication Number Publication Date
EP0584957A1 EP0584957A1 (de) 1994-03-02
EP0584957B1 true EP0584957B1 (de) 1998-09-16

Family

ID=26513237

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93305909A Expired - Lifetime EP0584957B1 (de) 1992-07-29 1993-07-27 Zigarette

Country Status (4)

Country Link
EP (1) EP0584957B1 (de)
JP (1) JP3204549B2 (de)
CA (1) CA2101345C (de)
DE (1) DE69321059T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1079200A (en) * 1998-11-09 2000-05-29 Japan Tobacco Inc. Filter cigarette
GB2479775A (en) 2010-04-22 2011-10-26 British American Tobacco Co Embossing smoking article wrappers
TW201438607A (zh) * 2012-10-16 2014-10-16 British American Tobacco Co 菸品包裝紙及製作菸品之方法
WO2015025376A1 (ja) * 2013-08-21 2015-02-26 日本たばこ産業株式会社 シガレット用のフィルタ
CN111528521A (zh) * 2018-11-01 2020-08-14 四川三联新材料有限公司 一种发烟制品卷制方法及发烟制品
CA3124478A1 (en) * 2018-12-21 2020-06-25 Jt International S.A. Embossed tipping paper and method of manufacturing smoking article with embossed tipping paper

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3596663A (en) * 1969-05-29 1971-08-03 Lorillard Co P Ventilated smoking article
CH642238A5 (en) * 1979-09-20 1984-04-13 Varipack Ag Method of manufacturing a filter cigarette, connecting strip for carrying out the method and filter cigarette manufactured in accordance with this method
GB2090117B (en) * 1980-12-22 1985-08-21 Imp Group Ltd Ventilated cigarette tip
US4488563A (en) * 1982-04-29 1984-12-18 Mitsubishi Acetate Co., Ltd. Filter plug
GB2133269B (en) * 1982-12-13 1986-08-20 Filtrona Ltd Tobacco smoke filter
EP0536407B1 (de) * 1991-03-11 1997-02-12 Japan Tobacco Inc. Ventilierte Filterzigarette

Also Published As

Publication number Publication date
EP0584957A1 (de) 1994-03-02
DE69321059T2 (de) 1999-03-25
DE69321059D1 (de) 1998-10-22
JP3204549B2 (ja) 2001-09-04
JPH0690728A (ja) 1994-04-05
CA2101345A1 (en) 1994-01-30
CA2101345C (en) 1996-11-12

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