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EP0409566A1 - Indicateur thermique pour articles à fumer - Google Patents

Indicateur thermique pour articles à fumer Download PDF

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Publication number
EP0409566A1
EP0409566A1 EP90307808A EP90307808A EP0409566A1 EP 0409566 A1 EP0409566 A1 EP 0409566A1 EP 90307808 A EP90307808 A EP 90307808A EP 90307808 A EP90307808 A EP 90307808A EP 0409566 A1 EP0409566 A1 EP 0409566A1
Authority
EP
European Patent Office
Prior art keywords
smoking article
fluid
method defined
smoking
predetermined
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Withdrawn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
EP90307808A
Other languages
German (de)
English (en)
Inventor
Murphy F. Sprinkel
Bruce D. Losee, Jr.
John M. Campbell
Constance H. Morgan
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.)
Philip Morris Products Inc
Philip Morris USA Inc
Original Assignee
Philip Morris Products Inc
Philip Morris USA 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
Priority claimed from US07/381,764 external-priority patent/US4987908A/en
Priority claimed from US07/381,762 external-priority patent/US5154192A/en
Application filed by Philip Morris Products Inc, Philip Morris USA Inc filed Critical Philip Morris Products Inc
Publication of EP0409566A1 publication Critical patent/EP0409566A1/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Withdrawn legal-status Critical Current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
    • A24D1/12—Cigars; Cigarettes with ash-retaining attachments, holders, or other equipment
    • 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
    • A24D1/22—Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources

Definitions

  • the present invention relates to thermal indicators used on smoking articles. More particu­larly, this invention relates to thermal indicators which change visually to indicate a predetermined temperature within the smoking article.
  • Non-combustion smoking articles include smoking articles heated by electrical or chemical means, or by burning some type of heat source other than the tobacco itself.
  • the tobacco or flavor source is heated, but is not burned. If the heat source is contained within the non-combustion smoking article, it provides no visual indication, such as a burning end, of the temperature gradient along the article. A smoker is unable to determine which portion of the smoking article is hot.
  • a person smoking a non-combustion smoking article must be informed that the device has begun to work.
  • the smoker also needs information about the on-going operation of the device, for example, whether the heat source is still operating.
  • the smoker must know when to stop puffing because the flavour or heat source is expended. Unless the smoker knows this, the smoker may try to use the device longer than is intended by the manufacturer, possibly resulting in customer dissatisfaction.
  • the thermal indicators used on smoking articles must not affect the flavor or safety of the smoking articles.
  • the indicator materials must be non-toxic both prior to and after heating.
  • thermal indicator means of the present invention may be of various types.
  • the thermal indicators are substances which react chemically at a predetermined temperature to cause a visible color change.
  • the thermal indicator substances of this embodiment include organic acids, sugars, or amines combined with sugars, which are applied to a surface of the smoking article to be monitored.
  • the compounds used for the indicators may be of a variety of concentrations and may be applied to the surface of the smoking article in different quantities.
  • the thermal indicator comprise a colored material which is covered or masked by a fusible or otherwise thermally labile substance.
  • the indicator may include a colored substrate applied to the surface of the smoking article to be monitored. This substrate is covered by an opaque, low melting point wax or other similar compound. In this embodiment, the wax coating melts away to reveal the colored substrate beneath.
  • the thermal indicator may include microencapsulated chemicals which cause a color change by inking or dyeing the surface of the smoking article. These chemicals are released when the heat from the article melts the encapsulating material.
  • the thermal indicators may be applied to a smoking article in a variety of patterns using conventional printing techniques.
  • the indicators are printed along the longitudinal length of the smoking article. As the internal temperature gradient of the smoking article moves down the length of the article, the indicators gradually reveal a color indication in response to the increased heat.
  • the smoking article is hottest at distal end 14 where the device is lit or otherwise initially heated, and cooler toward filter 12.
  • the heated aerosol, heat-­conducting foil, and possibly the heat source itself e.g., a carbon rod burning toward filter 12
  • FIG. 1 shows a smoking article 10 imprinted with thermal indicators collectively indicated by reference numeral 16.
  • the thermal indicators are printed in a series of small dots.
  • Indicators 16 are printed at distal end 14 and down the length of smoking article 10.
  • indicators 16 may be printed or sprayed onto the outer surface of smoking article 10 as lines or letters, or in any of a variety of patterns.
  • FIG. 2 shows the smoking article of FIG. 1 after the device has begun to operate.
  • all of the indicators 16 are invisible (as shown in FIG. 1).
  • distal end 14 is the first portion of article 10 to experience a temperature rise. Therefore, the indi­cator 18 closest to distal end 14 begins to color first.
  • indicator 20 colors Thermal indicator 22 will be the next to color, as the internal temperature gradient progressively moves toward the proximal end. In this way, the smoker is alerted that smoking article 10 is still hot and is still operating.
  • FIG. 3 shows the smoking article of FIG. 1, having means for indicating when smoking article 10 is finished.
  • This embodiment is particularly suited for smoking articles comprising a heat source which extends longitudinally down the length of the article and heats gradually from distal end 14 toward filter 12 (such as a burning carbon rod).
  • a marking 24 is printed on the surface of smoking article 10 of FIG. 1.
  • Marking 24 is preferably printed in ink, but may also be printed with the same compound as indicators 16.
  • Marking 24 is disposed before the thermal indicator closest to filter 12, i.e., between indicators 26 and 28.
  • Thermal indicator 28, located beyond marking 24, changes color when the area surrounding the proximal end of article 10 becomes hot. This may occur, for example, when a heat source, such a burning rod of carbon, burns to the end of article 10.
  • Indicator 28 alerts the smoker that smoking article 10 is finished and should be discarded.
  • indicators 26 and 28 include greater chemical concentrations, and therefore become darker when heated, than the in­dicators closer to distal end 14. In this embodi­ment, marking 24 is unnecessary; the darker color of indicators 26 and 28 alert the smoker that the de­vice is finished.
  • Thermal indicators in accordance with this invention may be applied to smoking articles using standard methods of printing on cigarette wrappers.
  • the indicators are applied to the smoking article by means of a print wheel.
  • spray jets are used to apply the thermal indicators.
  • a print wheel or spray jet requires a solid content of at least 30 percent solids in the material to be applied. It is preferable to combine an indicator compound with a high viscosity agent, such as corn syrup, prior to printing.
  • a high viscosity agent such as corn syrup
  • the high viscosity additive makes the indicator compound more suitable for printing on paper, because the indicator will be less likely to run or streak.
  • the viscosity agent allows the indicators of this invention to be printed on the cigarette paper at high speeds. Vis­cosity agents such as corn syrup may also provide additional sugars, which may participate in the chem­ical reactions that cause the indicators to change color.
  • Thermal indicators of the first embodiment are chemical compounds in the form of solutions or slurries (in water) of organic acids, sugars, or amines combined with sugars. Heat from the operation of the smoking article causes the indicators disposed on the outer surfaces of the device to react chemi­cally, and to change color. Prior to heating, and the subsequent chemical reaction, the indicators remain invisible, and thus do not affect the appear­ance of the smoking article.
  • the chemical reactions creating the color changes are substantially inde­pendent of the paper and the materials which may be present on the paper to prevent the paper from being burned or charred. However, the surface properties of the paper may affect the chemical reactions.
  • Organic acids applied in a solution, are the first class of chemicals which react when heated to cause a distinctive tanning or browning of the surface to which they are applied. Solutions of between five percent and 85 percent organic acids by weight may be used. As the concentration of organic acids is increased, the color intensity upon heating is increased. Thus, the indicator color can be regulated, and the appearance of the cigarette wrapper can be controlled.
  • a saturated solution or a concentration solution of approximately 50 percent organic acid by weight is used for the indicator.
  • color intensity generally increases as the indicator solutions become more concentrated, solutions of 50 percent organic acid produce color indications substantially similar to solutions of greater concentrations. It is there­fore more cost effective to use solutions of 50 percent concentration.
  • the indicator is a slurry of an organic acid in water.
  • organic acids which may be used as indicators include ascorbic acid and citric acid.
  • ascorbic acid will cause a sub­stantially tan color indication when heated to ap­proximately 135 to 155 degrees Centigrade, a brown color indication when heated to approximately 155 to 180 degrees Centigrade, and a dark brown color indi­cation when heated to approximately 180 to 200 degrees Centigrade.
  • the indicator color is continuously variable with temperature over these temperature ranges.
  • Sugars are a second class of chemical com­pounds which may be used as thermal indicators on smoking articles.
  • Examples of compounds from this class which react when heated to create color changes include solutions of sucrose, dextrose, or fructose.
  • the preferred solvent for these solutions is alcohol.
  • Other solvents that may be used include water, ketone, and aldehyde.
  • indicators composed of these compounds carmelize and turn brown in an elim­ination reaction. At high temperatures, the sugars carbonize and turn black.
  • Solutions of at least five percent sugar by weight are required to create a visible color change. Similar to the organic acid indicators, the intensity of the color change increases as the con­centration of sugar in the solution increases. It is preferable to use sugar concentrations of at least 40 percent by weight, because at higher sugar con­ centrations, such indicators give off a "caramel type" odor as an additional indication of high tem­peratures. This odor is emitted by the sugar ther­mal indicators both during carmelization and carbonization.
  • the third class of chemicals suitable for use on smoking articles which cause a color change when heated are amines combined with sugars.
  • a so­lution of asparagine and fructose is an example of compounds in this class which react to cause a color change when heated.
  • This combination of compounds causes a tan-brown color indication at temperatures of approximately 140 degrees Centigrade.
  • the amine (asparagine) reacts with the sugar (fructose) when heat is applied in a "browning" or "Amadori” reaction.
  • Indicators of this type cause surface browning and release volatile compounds thereby providing both visual and olfactory signals to indicate that the smoking article is hot.
  • Thermal indicators in accordance with the second aspect of this invention are comprised of compounds which physically change to either reveal a colored substrate or create a color change as an indication of temperature change.
  • the indicators are applied directly to the surface whose temperature is to be monitored.
  • low melting point waxes are applied to a colored substrate.
  • the coating material is initially opaque, and remains as such until the surface whose temperature is being monitored reaches a predetermined temperature. At or near the predetermined temperature, the coating wicks and becomes clear. The coating thins and is absorbed into the surface (i.e. into the paper cigarette wrapper). The substrate, previously hidden beneath the opaque coating, becomes visible as an indication of temperature change.
  • the preferred coating materials include hydrocarbon waxes in the hydrocarbon range of C16 to C30.
  • Compounds such as polyvinyl alcohol or polyvinyl acetate, or long chain fatty acids, such as stearic acid, may be added to the coating materials as hardening agents.
  • the coating materials may be selected and combined such that the coating will melt to reveal a color indication when subjected to a predetermined temperature within the range of 40 degrees to 220 degrees Centigrade.
  • the substrate may be printed in a wide variety of colors and may be printed in a variety of patterns or letters. More than one color ink may be used on a single smoking article.
  • the thermal indicator's substrate may be selected to enhance the appearance of the smoking article to which it is applied.
  • the substrate used for cigarettes may comprise conventional print ink, or any other non-toxic colorant, applied directly to the cigarette wrapper.
  • the preferred coloring agent of the ink is carbon
  • the thermal indicators comprise microencapsulated chemicals.
  • the microencapsulated chemicals include inks and dyes, color producing materials, solvents for the inks, water, or alcohols.
  • Precursors to inks or dyes i.e., selected components of multiple-component inks or dyes
  • the encapsulating materials melt and release the encased chemicals, resulting in the inking or dyeing of the smoking article.
  • a solution comprising microencap­sulated chemicals is printed directly on the smoking article. There is no colored substrate beneath the microencapsulated chemical solution.
  • Thermal indicators in accordance with this invention may be applied to smoking articles using standard methods of printing on cigarette wrappers.
  • the indicators are applied to the smo­king article by means of a print wheel. This method is suitable for applying indicators comprising micro­encapsulated chemicals.
  • the thermal indicator includes a colored substrate beneath a waxy coating
  • a more complicated printing procedure is required.
  • the substrate preferably printed with conventional print ink, is first applied to the cigarette wrapper by a first print wheel.
  • the opaque wax coating is superimposed upon the substrate by a second print wheel.
  • the substrate of the indicator is imprinted on the cigarette wrapper by means of spray jets, in lieu of using the first print wheel.
  • the opaque wax coating is again super­imposed upon the substrate by a print wheel.
  • the wax may be ap­plied to the smoking article either hot or cold.
  • the wax is preferably applied when cold.
  • Solvents are added to the wax to obtain the desired wax viscosity for proper bonding of the cold wax to the substrate and cigarette paper.
  • Food-grade vegetable oil is a solvent suitable for this application.
  • the indicator material may be printed in a continuous line down the length of smoking article 10, in place of the pattern of dots, in the embodiment of FIG. 1.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
EP90307808A 1989-07-18 1990-07-17 Indicateur thermique pour articles à fumer Withdrawn EP0409566A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US381762 1989-07-18
US07/381,764 US4987908A (en) 1989-07-18 1989-07-18 Thermal indicators for smoking articles
US381764 1989-07-18
US07/381,762 US5154192A (en) 1989-07-18 1989-07-18 Thermal indicators for smoking articles and the method of application of the thermal indicators to the smoking article

Publications (1)

Publication Number Publication Date
EP0409566A1 true EP0409566A1 (fr) 1991-01-23

Family

ID=27009506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90307808A Withdrawn EP0409566A1 (fr) 1989-07-18 1990-07-17 Indicateur thermique pour articles à fumer

Country Status (2)

Country Link
EP (1) EP0409566A1 (fr)
JP (1) JPH0368374A (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2763080A1 (fr) * 1997-05-06 1998-11-13 Mauduit Papeteries Procede de marquage d'un papier a cigarette
WO1999044447A1 (fr) 1998-03-03 1999-09-10 British American Tobacco (Investments) Limited Articles de tabac et revetement pour ces articles
WO2008116739A1 (fr) * 2007-03-27 2008-10-02 British American Tobacco (Investments) Limited Article à fumer avec un agencement thermoélastique et ses procédés de fabrication
EP2412256A1 (fr) 2010-07-29 2012-02-01 Republic Technologies (NA) Llc Cahiers de papier à cigarettes comprenant un marquage perfectionné
WO2017114895A1 (fr) * 2015-12-31 2017-07-06 Philip Morris Products S.A. Article de production d'aérosol comprenant un indicateur thermique
CN109475176A (zh) * 2016-05-25 2019-03-15 R.J.雷诺兹烟草公司 使用热致变色标签的非燃烧吸烟制品
CN109497617A (zh) * 2018-11-14 2019-03-22 云南中烟工业有限责任公司 一种具有指示功能的加热不燃烧卷烟烟支
WO2019077530A1 (fr) * 2017-10-19 2019-04-25 Rai Strategic Holdings, Inc. Aérosol colorimétrique et détection de gaz pour dispositif de distribution d'aérosol
WO2020089109A1 (fr) * 2018-10-29 2020-05-07 Nerudia Limited Consommable de substitution à l'acte de fumer
EP2378905B1 (fr) 2008-12-24 2020-05-27 Philip Morris Products S.a.s. Article incluant des informations d'identification à utiliser dans un système de fumée chauffé thermiquement
CN111372481A (zh) * 2017-12-29 2020-07-03 Jt国际股份公司 具有光学识别的吸入器及其消耗品
CN112055546A (zh) * 2018-05-01 2020-12-08 日本烟草产业株式会社 非燃烧加热型吸烟物品用的卷纸、非燃烧加热型吸烟物品以及电加热型吸烟系统
WO2021105698A1 (fr) * 2019-11-29 2021-06-03 Nicoventures Trading Limited Indicateur et procédé d'indication
EP3753421B1 (fr) 2005-07-19 2021-12-08 JT International SA Procédé et appareil de vaporisation d'une substance
KR20210157906A (ko) * 2018-11-23 2021-12-29 주식회사 케이티앤지 에어로졸 생성 물품 및 에어로졸 생성 시스템
US20220330605A1 (en) * 2019-08-23 2022-10-20 Jt International Sa Aerosol-Generating Article Wrapper Comprising Heat Sensitive Indication Means
US11647783B2 (en) 2005-07-19 2023-05-16 Juul Labs, Inc. Devices for vaporization of a substance
US11904089B2 (en) 2011-08-16 2024-02-20 Juul Labs, Inc. Devices for vaporization of a substance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102547780B1 (ko) * 2020-10-27 2023-06-26 주식회사 케이티앤지 부류연 제거 장치 및 그의 제어 방법

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2176423A5 (fr) * 1972-03-15 1973-10-26 Timm Hermann

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2176423A5 (fr) * 1972-03-15 1973-10-26 Timm Hermann

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2763080A1 (fr) * 1997-05-06 1998-11-13 Mauduit Papeteries Procede de marquage d'un papier a cigarette
WO1999044447A1 (fr) 1998-03-03 1999-09-10 British American Tobacco (Investments) Limited Articles de tabac et revetement pour ces articles
US12490768B2 (en) 2005-07-19 2025-12-09 Juul Labs, Inc. Devices for vaporization of a substance
EP3753421B1 (fr) 2005-07-19 2021-12-08 JT International SA Procédé et appareil de vaporisation d'une substance
US11647783B2 (en) 2005-07-19 2023-05-16 Juul Labs, Inc. Devices for vaporization of a substance
WO2008116739A1 (fr) * 2007-03-27 2008-10-02 British American Tobacco (Investments) Limited Article à fumer avec un agencement thermoélastique et ses procédés de fabrication
CN101646361B (zh) * 2007-03-27 2012-09-05 英美烟草(投资)有限公司 具有热回弹性设计的抽吸制品以及制备抽吸制品的方法
US8590542B2 (en) 2007-03-27 2013-11-26 British American Tobacco (Investments) Limited Smoking article with thermoresilient design and methods of producing the same
EP2378905B2 (fr) † 2008-12-24 2023-11-01 Philip Morris Products S.A. Article incluant des informations d'identification à utiliser dans un système de fumée chauffé thermiquement
EP2378905B1 (fr) 2008-12-24 2020-05-27 Philip Morris Products S.a.s. Article incluant des informations d'identification à utiliser dans un système de fumée chauffé thermiquement
US11724290B2 (en) 2008-12-24 2023-08-15 Philip Morris Usa Inc. Article including identification information for use in an electrically heated smoking system
EP2412256A1 (fr) 2010-07-29 2012-02-01 Republic Technologies (NA) Llc Cahiers de papier à cigarettes comprenant un marquage perfectionné
US12440630B2 (en) 2011-08-16 2025-10-14 Juul Labs, Inc. Devices for vaporization of a substance
US11904089B2 (en) 2011-08-16 2024-02-20 Juul Labs, Inc. Devices for vaporization of a substance
RU2722123C2 (ru) * 2015-12-31 2020-05-26 Филип Моррис Продактс С.А. Изделие, генерирующее аэрозоль, содержащее термоиндикатор
US11330835B2 (en) 2015-12-31 2022-05-17 Philip Morris Products S.A. Aerosol-generating article comprising a thermal indicator
WO2017114895A1 (fr) * 2015-12-31 2017-07-06 Philip Morris Products S.A. Article de production d'aérosol comprenant un indicateur thermique
CN109475176A (zh) * 2016-05-25 2019-03-15 R.J.雷诺兹烟草公司 使用热致变色标签的非燃烧吸烟制品
US11197496B2 (en) 2016-05-25 2021-12-14 R.J. Reynolds Tobacco Company Non-combusting smoking article with thermochromatic label
WO2019077530A1 (fr) * 2017-10-19 2019-04-25 Rai Strategic Holdings, Inc. Aérosol colorimétrique et détection de gaz pour dispositif de distribution d'aérosol
CN111372481A (zh) * 2017-12-29 2020-07-03 Jt国际股份公司 具有光学识别的吸入器及其消耗品
US20210045433A1 (en) * 2018-05-01 2021-02-18 Japan Tobacco Inc. Rolling paper for non-combustion-heating-type smoking product, non-combustion-heating-type smoking product, and electric-heating-type smoking system
EP3777579A4 (fr) * 2018-05-01 2021-11-24 Japan Tobacco Inc. Papier à rouler pour produit à fumer de type à chauffage sans combustion, produit à fumer de type à chauffage sans combustion, et système à fumer de type à chauffage électrique
KR20200139206A (ko) * 2018-05-01 2020-12-11 니뽄 다바코 산교 가부시키가이샤 비연소가열형 흡연 물품용의 권지, 비연소가열형 흡연 물품 및 전기가열형 흡연 시스템
CN112055546A (zh) * 2018-05-01 2020-12-08 日本烟草产业株式会社 非燃烧加热型吸烟物品用的卷纸、非燃烧加热型吸烟物品以及电加热型吸烟系统
CN112055546B (zh) * 2018-05-01 2024-04-02 日本烟草产业株式会社 非燃烧加热型吸烟物品用的卷纸、非燃烧加热型吸烟物品以及电加热型吸烟系统
WO2020089109A1 (fr) * 2018-10-29 2020-05-07 Nerudia Limited Consommable de substitution à l'acte de fumer
CN109497617A (zh) * 2018-11-14 2019-03-22 云南中烟工业有限责任公司 一种具有指示功能的加热不燃烧卷烟烟支
KR20210157906A (ko) * 2018-11-23 2021-12-29 주식회사 케이티앤지 에어로졸 생성 물품 및 에어로졸 생성 시스템
EP3818877B1 (fr) 2018-11-23 2024-06-26 KT&G Corporation Article de génération d'aérosol
US20220330605A1 (en) * 2019-08-23 2022-10-20 Jt International Sa Aerosol-Generating Article Wrapper Comprising Heat Sensitive Indication Means
WO2021105698A1 (fr) * 2019-11-29 2021-06-03 Nicoventures Trading Limited Indicateur et procédé d'indication

Also Published As

Publication number Publication date
JPH0368374A (ja) 1991-03-25

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