WO2001048315A1 - Cigarette - Google Patents

Cigarette Download PDF

Info

Publication number
WO2001048315A1
WO2001048315A1 PCT/JP2000/009186 JP0009186W WO0148315A1 WO 2001048315 A1 WO2001048315 A1 WO 2001048315A1 JP 0009186 W JP0009186 W JP 0009186W WO 0148315 A1 WO0148315 A1 WO 0148315A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
wrapping paper
cigarette
thermal conductivity
ash
Prior art date
Application number
PCT/JP2000/009186
Other languages
English (en)
Japanese (ja)
Inventor
Keigo Miura
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.
Priority to AU22238/01A priority Critical patent/AU2223801A/en
Publication of WO2001048315A1 publication Critical patent/WO2001048315A1/fr

Links

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

  • the present invention relates to a cigarette having a small air permeability of a wrapping paper and a high natural burning rate.
  • An object of the present invention is to provide a cigarette having a small air permeability of a wrapping paper and a large natural burning speed.
  • the cigarette of the present invention is a cigarette obtained by winding a cigarette by a wrapper, wherein the wrapper has an air permeability of 30 collector units or less and a thermal conductivity of 0.38 W. m-1 K- 1 or less.
  • Figure 1 is an explanatory diagram showing the state of conduction heat transfer and heat radiation heat transfer in a cross section of a cigarette.
  • FIG. 2 shows the temperature at the ignition point of the cigarette paper according to the present invention.
  • FIG. 4 is a diagram showing the change as a parameter of the thermal conductivity of the wrapping paper.
  • FIG. 3 is a diagram showing the time change of the temperature of the ignition point of the cigarette paper of the cigarette according to the present invention with the thermal conductivity of the paper ash as a parameter.
  • the present inventors have found that a cigarette in a state of natural combustion repeatedly ignites and extinguishes the wrapping paper, and combustion proceeds intermittently. This was made clearer by taking a video of the burning of the cigarette and graphing the change over time in the burning position of the cigarette paper. That is, when the wrapping paper is ignited, the burning position moves a little, but the wrapping paper extinguishes immediately and the burning position does not move for a while. I understood.
  • Such intermittent combustion of cigarettes is thought to be due to the following mechanism.
  • the cigarette burns with the tobacco shred and the burning position of the cigarette moves, but the cigarette shred which is not ignited at a certain distance from the ignition point of the tobacco shred At the point of contact, the fire extinguishes the wrapping paper, and the burning position of the wrapping paper does not move for a while.
  • the burning cigarette is used as a heat source, and the wrapping paper reignites after the temperature of the wrapping paper gradually increases. Therefore, the burning rate differs depending on the time required for re-ignition of the fire extinguishing paper, and this phenomenon is considered to be the rate of heat transfer.
  • FIG. 1 Shows a cross section of a cigarette 10 schematically, and the cigarette 10 has a structure in which a cigarette cut 20 is wound with a wrapping paper 30.
  • reference numeral 21 denotes the tobacco cut
  • reference 31 denotes the ignition point of the wrapping paper (the point where the fire is extinguished but reignition occurs at this time)
  • reference numeral 22 denotes the cigarette nick that contacts the ignition point of the paper.
  • Symbols 32 indicate rolled paper ash, respectively.
  • the arrows in Fig. 1 indicate conduction or radiative heat transfer.
  • the time change of the temperature of the ignition point 31 of the wrapping paper is expressed by the following equation (1).
  • the time change of the temperature of the tobacco cut 22 in contact with the paper ignition point 31 included in the expression (1) is expressed by the following expression (2).
  • Equation (2) indicates that the time change (left side) of the temperature of the tobacco cut 22 in contact with the paper ignition point 3 1 indicates that the conduction transfer from the burning tobacco cut to the tobacco cut 22 through the tobacco cut 2 2
  • the term due to heat (the first term on the right side), the term due to conduction heat transfer from the paper ignition point 31 to the tobacco cut 22 (the second term on the right side), and from the burning tobacco cut to the tobacco cut
  • the term due to radiative heat transfer to tobacco cut 22 (the third
  • the temperature change represented by the equations (1) and (2) must be changed over time. Should be increased.
  • the present inventors calculated the effect of the temperature of the ignition point 31 of the wrapping paper on the time change by changing various parameters in the equations (1) and (2). I asked. At this time, no.
  • the thermal conductivity, heat capacity and emissivity of the wrapping paper and wrapping paper ash were examined as parameters.
  • SBR natural burning rate
  • Figure 2 shows the change over time of the ignition point of the wrapping paper, and the thermal conductivity of the wrapping paper as a parameter.
  • the reference example is a calculation example when the thermal conductivity of the wrapping paper is a standard value
  • the solid line is the thermal conductivity of the wrapping paper. Calculation example when the conductivity is 20% lower than the reference example (— 20%).
  • the dashed line indicates the case where the thermal conductivity of the wrapping paper is 20% higher than the reference example (+ 20%). This is a calculation example of. From this figure, it can be seen that by reducing the thermal conductivity of the wrapping paper, the temperature of the ignition point of the wrapping paper tends to rise over time (the natural combustion rate increases). I understand.
  • Figure 3 shows the temporal change of the ignition point temperature of the paper wrap, and the thermal conductivity of the paper ash as a parameter.
  • the reference example is a calculation example in which the thermal conductivity of the paper ash is a standard value
  • the solid line is a case in which the thermal conductivity of the paper ash is 20% higher than the reference example (+20) %)
  • the dashed line is a calculation example when the thermal conductivity of the wrapping paper ash is 2 °% lower than the reference example (120%). From this figure, it can be seen that by increasing the thermal conductivity of the paper ash, the temperature of the ignition point of the paper wrap tends to rise with time (the natural combustion rate increases). Wakapuru.
  • the thermal conductivity of the wrapping paper and ash is not determined solely by the air permeability of the wrapping paper. Therefore, according to the present invention, a paper roll having a low air permeability of 30 collector units or less and a thermal conductivity of 0.38 W m-1 K- 1 or less is used. Cigarettes with a high natural combustion rate can be provided. Such a cigarette with low air permeability and high natural combustion rate has never been known before.
  • the air permeability of the wrapping paper is preferably at least 0 core units, and the thermal conductivity of the wrapping paper is at least 0.1 Wm-1 K-1 and 0.38 Wm. -i K- 1 or less, preferably between 0.2 and 0.37 W ⁇ -1 K-1 is more preferable.
  • the following method can be considered as a specific method for reducing the thermal conductivity of the wrapping paper.
  • A Increase the amount of filler in the wrapping paper. Since filler particles have the effect of reducing the thermal conductivity of the wrapping paper, increasing the amount of filler in the wrapping paper decreases the thermal conductivity of the wrapping paper.
  • B Reduce the amount of fibers that make up the wrapping paper. Since the fiber has the effect of increasing the thermal conductivity of the wrapping paper, reducing the amount of fiber reduces the thermal conductivity of the wrapping paper.
  • the thermal conductivity of the wrapping paper is reduced by disturbing the degree of arrangement of the fibers constituting the wrapping paper.
  • D Reduce the thermal conductivity of the wrapping paper by mixing a material with low thermal conductivity into the wrapping paper.
  • a method of reducing the emissivity of the wrapping paper a method of forming a particle layer having a low emissivity on the surface can be considered.
  • Cigarettes A to C are conventional ones, and cigarettes D to F relate to the present invention.
  • the wrapping paper used has a basis weight of 30 g / m 2 and has no additive (combustion control agent).
  • As the filler calcium carbonate having an average particle diameter of 0.3 m was used.
  • the air permeability of these wrappers is in the range of 0 to 20 core units [CU].
  • Paper roll The thermal conductivity of the paper and the thermal conductivity of the paper ash are as shown in Table 1.
  • Table 1 shows the results of measuring the natural burning rate (SBR) of cigarettes AF under the standard smoking condition (ISO).
  • the cigarettes D to F according to the present invention reduce the thermal conductivity of the wrapping paper by increasing the blending ratio of the filler. Therefore, both low air permeability and high natural combustion rate are satisfied.
  • the present invention it is possible to provide a cigarette in which the wrapping paper has a low air permeability and a high natural combustion rate.

Landscapes

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

Abstract

La présente invention concerne une cigarette obtenue en enroulant du tabac haché dans du papier à cigarettes caractérisé par une perméabilité de 30 unités Coresta maximum et une conductivité thermique de 0,38 Wm-1K-1 maximum.
PCT/JP2000/009186 1999-12-27 2000-12-25 Cigarette WO2001048315A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU22238/01A AU2223801A (en) 1999-12-27 2000-12-25 Cigarette

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP37179999 1999-12-27
JP11/371799 1999-12-27

Publications (1)

Publication Number Publication Date
WO2001048315A1 true WO2001048315A1 (fr) 2001-07-05

Family

ID=18499329

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/009186 WO2001048315A1 (fr) 1999-12-27 2000-12-25 Cigarette

Country Status (2)

Country Link
AU (1) AU2223801A (fr)
WO (1) WO2001048315A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014776A1 (fr) * 1989-06-02 1990-12-13 Rothmans, Benson & Hedges Inc. Cigarette avec abaissement de l'emission laterale de fumee
EP0426459A2 (fr) * 1989-10-31 1991-05-08 Philip Morris Products Inc. Enveloppe pour article à fumer
EP0482820A1 (fr) * 1990-10-19 1992-04-29 Philip Morris Products Inc. Enveloppe pour article à fumer
EP0513985A1 (fr) * 1991-04-12 1992-11-19 Philip Morris Products Inc. Cigarette et enveloppe à nombre contrôlé de bouffées
EP0842616A1 (fr) * 1996-11-14 1998-05-20 Schweitzer-Mauduit International, Inc. Papier à cigarette ayant des caractéristiques de cendre améliorées
JPH11124798A (ja) * 1997-10-22 1999-05-11 Japan Tobacco Inc 燃焼性に優れたシガレット用巻紙およびシガレット

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014776A1 (fr) * 1989-06-02 1990-12-13 Rothmans, Benson & Hedges Inc. Cigarette avec abaissement de l'emission laterale de fumee
EP0426459A2 (fr) * 1989-10-31 1991-05-08 Philip Morris Products Inc. Enveloppe pour article à fumer
EP0482820A1 (fr) * 1990-10-19 1992-04-29 Philip Morris Products Inc. Enveloppe pour article à fumer
EP0513985A1 (fr) * 1991-04-12 1992-11-19 Philip Morris Products Inc. Cigarette et enveloppe à nombre contrôlé de bouffées
EP0842616A1 (fr) * 1996-11-14 1998-05-20 Schweitzer-Mauduit International, Inc. Papier à cigarette ayant des caractéristiques de cendre améliorées
JPH11124798A (ja) * 1997-10-22 1999-05-11 Japan Tobacco Inc 燃焼性に優れたシガレット用巻紙およびシガレット

Also Published As

Publication number Publication date
AU2223801A (en) 2001-07-09

Similar Documents

Publication Publication Date Title
KR100294308B1 (ko) 연료요소조성물
JP3023127B2 (ja) 喫煙製品の改良
US5611360A (en) Smoking article
TW513290B (en) Low-spreading cigarette
JP3706044B2 (ja) 喫煙品
AU633793B2 (en) Cigarette with tobacco/glass fuel wrapper
EP1968403B1 (fr) Articles à fumer comprenant des bandes enveloppantes internes
WO2007119678A1 (fr) Formule de source de chaleur carbonée pour article non combustible destiné à être fumé et article non combustible destiné à être fumé
JP2002500032A (ja) 副流煙を減少させた紙巻きタバコ
US6378528B1 (en) Cigarette with improved tobacco substrate
JP4504921B2 (ja) 改良された低延焼性のシガレット
WO2003039275A1 (fr) Cigarette a faible propagation de flamme
JPS58121786A (ja) タバコ製品
TW537869B (en) Cigarette
US5983901A (en) Smoking articles
KR20020053095A (ko) 궐련용 권지 및 궐련
WO2020122711A1 (fr) Tige creuse fabriquée à partir d'un matériau de tabac homogénéisé
WO2001048315A1 (fr) Cigarette
WO2001048317A1 (fr) Cigarette
JP2988726B2 (ja) 複数回喫煙可能なシガレットシステム
CN114190582A (zh) 一种部分燃烧的卷烟

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP