EP3775374A1 - Papier d'emballage à indicateur de consommation pour articles de génération d'aérosol - Google Patents

Papier d'emballage à indicateur de consommation pour articles de génération d'aérosol

Info

Publication number
EP3775374A1
EP3775374A1 EP20715803.1A EP20715803A EP3775374A1 EP 3775374 A1 EP3775374 A1 EP 3775374A1 EP 20715803 A EP20715803 A EP 20715803A EP 3775374 A1 EP3775374 A1 EP 3775374A1
Authority
EP
European Patent Office
Prior art keywords
wrapping paper
kpa
composition
air permeability
cellulose
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.)
Granted
Application number
EP20715803.1A
Other languages
German (de)
English (en)
Other versions
EP3775374B1 (fr
Inventor
Roland Zitturi
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.)
Delfortgroup AG
Original Assignee
Delfortgroup AG
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 Delfortgroup AG filed Critical Delfortgroup AG
Publication of EP3775374A1 publication Critical patent/EP3775374A1/fr
Application granted granted Critical
Publication of EP3775374B1 publication Critical patent/EP3775374B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A24D1/025—Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity
    • 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
    • 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
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0023—Digital printing methods characterised by the inks used
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • the invention relates to an aerosol-generating article in which the aerosol-generating material is heated and thus an aerosol is released, but the aerosol-generating material is not burned.
  • the aerosol-generating article comprises a wrapping paper to which a substance is applied over the entire surface or in partial areas which causes a change in the optical properties of the wrapping material and thus indicates that the aerosol-generating article has been used.
  • the wrapping paper of the aerosol-generating article according to the invention is designed in such a way that its color changes irreversibly at least in partial areas when heated, with particular consideration being given to the fact that the air permeability of the wrapping material is little affected.
  • the invention also relates to a method for producing such a wrapping paper.
  • aerosol generating articles which comprise an aerosol generating material, as well as a paper which wraps the aerosol generating material to form a typically cylindrical rod.
  • the aerosol-generating material is a material that releases an aerosol when exposed to heat, the aerosol-generating material only being heated but not burned.
  • the aerosol-generating de article also comprises a filter which can filter components of the aerosol and which is wrapped by a filter wrapping paper, as well as by a further wrapping paper which connects the filter and the wrapped rod with aerosol-generating material.
  • the aerosol-generating material When an aerosol-generating article is used as intended, it is common for the aerosol-generating material to be heated but not incinerated. This heating can be done, for example, by an external device into which the aerosol-generating article is inserted, or by a heat source attached to one end of the aerosol-generating article, which is put into operation for use of the article, for example by lighting it up.
  • the used aerosol-generating article In many cases there are several aerosol-generating articles in one package and often, after use, the used aerosol-generating article is returned in the package with the still unused aerosol-generating articles. Since the aerosol-generating material is only heated and not burned, the used aerosol-generating article differs from the unused aerosol-generating article optically not or only very little. In any case, the consumer cannot quickly decide which of the aerosol-generating articles are used and which are not yet used.
  • aerosol-generating articles are rod-shaped articles which comprise an aerosol-generating material and a wrapping paper that wraps the aerosol-generating material, with the aerosol-generating material only being heated and not burned when used as intended.
  • Typical aerosol-generating materials are heated without combustion if the aerosol-generating material is heated to a temperature of at most 400 ° C.
  • the inventors have found that this problem can be solved by a wrapping paper to which a certain composition is applied over the entire surface or in partial areas, which causes an irreversible color change of the wrapping paper when heated by accelerating the thermal degradation of the cellulose in the wrapping paper.
  • a used aerosol-generating article can be distinguished from an unused one with the naked eye.
  • thermochromic inks are already known in the prior art which show a color change when heated above a certain temperature, but which are deliberately not used in the present invention.
  • One reason for this is that the color change of thermochromic colors is often reversible, so that it disappears again when the aerosol-generating article cools down.
  • the degradation of the cellulose in the wrapping paper according to the invention is actually irreversible and thus allows the used aerosol-generating article to be reliably identified, even if it has been used for a long time.
  • thermochromic inks can partially be thermally degraded so that they lose their function.
  • thermochromic paint applied to the wrapping paper can considerably reduce the air permeability of the wrapping paper, which is why it is often not possible to apply a sufficient amount of such colors to the wrapping paper without impairing the function of the article.
  • thermochromic inks even if they could be used from a technical point of view, are often not allowed to be used.
  • a special inventive effect in the invention therefore, deviating from the behavior known from thermochromic inks, among other things, is that the substance applied does not change its color itself, but causes a change in the color of the cellulose in the wrapping paper.
  • the wrapping paper must comprise cellulose fibers, the cellulose fibers in the wrapping paper in an amount of at least 50% of the weight of the wrapping paper. This amount of cellulose fibers is at least necessary to make the color change clearly visible.
  • the wrapping paper has an average air permeability of at least 0 cm 3 / (cm 2 -min-kPa) and at most 200 cm 3 / (cm 2 -min-kPa).
  • the air permeability is measured according to ISO 2965: 2009 with a measuring head with an opening area of 2 mm x 15 mm, the mean air permeability being determined from ten measurements at randomly selected positions on the wrapping paper.
  • the composition applied to the wrapping paper must contain at least one substance that accelerates the thermal degradation of the cellulose in order to bring about the color change, as well as a binding agent in order to apply said substance on or in the paper fix.
  • the substance accelerating the thermal degradation of cellulose is suitable for causing an irreversible color change of the wrapping paper that is visible to the naked eye when the wrapping paper is heated to a temperature of at least 130 ° C for 5 minutes due to the thermal degradation of cellulose in the paper.
  • the wrapping paper has an air permeability of more than 10 cm 3 / (cm 2 -min-kPa), it is important that the air can flow evenly over the surface of the wrapping paper, so that larger areas with low air permeability are to be avoided. Such areas of low air permeability can result from the application of the composition.
  • Sufficient air permeability is ensured according to the invention in that the composition is only applied in partial areas of the wrapping paper, the partial areas covering at least 0.5% and at most 70% of the area of the wrapping paper. This limits the extent to which the air permeability is influenced, but it is also ensured that the area is sufficiently large that the change in color can be clearly seen.
  • the homogeneity of the air permeability is ensured according to the invention in that the sub-areas are designed in a suitable manner and arranged on the wrapping paper, the suitable design or arrangement of these sub-areas for the purposes of the invention being assessed on the basis of two criteria, of which at least at least one thing must be fulfilled.
  • the mean air permeability of the wrapping paper is at least 10 cm 3 / (cm 2 -min-kPa) and at most 20 cm 3 / (cm 2 -min-kPa)
  • the standard deviation of the air permeability should not exceed 6 cm 3 / (cm 2 -min-kPa)
  • the mean air permeability of the wrapping paper is at least 20 cm 3 / (cm 2 -min-kPa) and at most 200 cm 3 / (cm 2 -min-kPa)
  • the coefficient of variation in air permeability should not exceed 30%.
  • a measuring head with an opening area of 2 mm x 15 mm is used and the standard deviation and the coefficient of variation are determined from ten measurements on areas that are close together but not overlapping, so that the mean value and an area of about 300 mm 2 is used for the standard deviation.
  • the coefficient of variation is then the quotient of the standard deviation and the mean and is expressed as a percentage.
  • the mean value used in this calculation is generally not related to the mean air permeability described above match, which is determined from measurements on ten randomly selected positions.
  • the air permeability scatter parameters it is also sufficient, according to a second criterion, if with an average air permeability of at least 10 cm 3 / (cm 2 -min-kPa) and at most 200 cm 3 / (cm 2 -min-kPa ) the sub-areas in which the composition is applied to the wrapping paper are designed so that each imaginary circle with a diameter of D mm on the wrapping paper contains at least one area in which the composition is not applied, the diameter of the circle D in mm from the mean air permeability x in cm 3 / (cm 2 -min-kPa) through
  • the effect of this formula is that with a low average air permeability, for example 10 cm 3 / (cm 2 -min-kPa), the circle can have a relatively large diameter of 12 mm and thus the subregions can have coarser structures. This is possible because with low air permeability the influence of the partial areas on which the substance is applied is less significant. With high air permeability, for example 200 cm 3 / (cm 2 -min-kPa), the circle may only have a relatively small diameter of 6 mm and the sub-areas must therefore have a finer structure so that the air continues to flow homogeneously through the surface of the wrapping paper flows.
  • a low average air permeability for example 10 cm 3 / (cm 2 -min-kPa)
  • the circle may only have a relatively small diameter of 6 mm and the sub-areas must therefore have a finer structure so that the air continues to flow homogeneously through the surface of the wrapping paper flows.
  • the inventors have invented a wrapping paper for aerosol generating articles
  • composition which comprises a substance which accelerates the thermal degradation of cellulose and a binding agent, and
  • the said composition is only applied in partial areas that are at least 0.5% and at most 70% of the area of the Cover the wrapping paper, and wherein in this case, that is, if the average air permeability of the wrapping paper is at least 10 cm 3 / (cm 2 -min-kPa), the aforementioned sub-areas are arranged on the wrapping paper in such a way that at least one of the following two criteria (1 ), (2) is fulfilled:
  • the mean air permeability of the wrapping paper is at least 10 cm 3 / (cm 2 -min-kPa) and at most 20 cm 3 / (cm 2 -min-kPa)
  • the standard deviation of the air permeability is at most 6 cm 3 / ( cm 2 -min-kPa) and if the mean air permeability of the wrapping paper is at least 20 cm 3 / (cm 2 -min-kPa) and at most 200 cm 3 / (cm 2 -min-kPa)
  • each imaginary circle with a diameter of D mm on the wrapping paper contains at least one area in which the composition is not applied, the diameter D in mm the mean air permeability x in cm 3 / (cm 2 -min-kPa)
  • the mean air permeability x is determined as the mean value from ten measurements at randomly selected positions on the wrapping paper. The individual measurement is carried out in accordance with ISO 2965: 2009 with a measuring head with an opening area of 2 mm x 15 mm. During the measurement it should therefore be ignored that the opening area can typically simultaneously comprise areas to which the composition is applied and areas to which it is not applied.
  • ten measurements are also carried out in accordance with ISO 2965: 2009 with a measuring head with an opening area of 2 mm x 15 mm, whereby the measurements are carried out on surfaces that are close together but not overlapping, see above - that an area of about 300 mm 2 is used to form the mean and the standard deviation.
  • the coefficient of variation is then the quotient of the standard deviation and the mean of the measured values determined in this way and is expressed as a percentage.
  • the individual measuring surfaces are preferably arranged in such a way that they adjoin one another with their longer, that is to say the 15 mm long side, or lie parallel to one another at a small distance, preferably at most 2 mm.
  • Typical wrapping papers not according to the invention for aerosol-generating articles with air permeability which is naturally homogeneous over the entire surface have a coefficient of variation of at most 15% measured in this way.
  • wrapping papers to which a composition is applied to larger areas can achieve coefficients of variation in air permeability of 50% to 80%. This applies in particular when the composition is film-forming and thus closes the pores of the wrapping paper or the composition is applied in the form of strips several mm wide.
  • the wrapping paper preferably has a basis weight of at least 15 g / m 2 , particularly preferably of at least 18 g / m 2 and very particularly preferably of at least 20 g / m 2 . Such a weight per unit area gives the wrapping paper a tensile strength which is favorable for the further processing of the wrapping paper into an aerosol-generating article.
  • the wrapping paper preferably has a weight per unit area of at most 100 g / m 2 , particularly preferably at most 60 g / m 2 and very particularly preferably at most 45 g / m 2 .
  • the weight per unit area of the wrapping paper is preferably not so high that restoring forces can make the wrapping of the aerosol-generating material more difficult during the manufacture of the aerosol-generating article.
  • the basis weight of the wrapping paper includes the applied composition and can be measured according to ISO 536: 2012.
  • the wrapping paper contains cellulose fibers, the cellulose fibers accounting for at least 50% of the weight of the wrapping paper and preferably at least 60% of the weight of the wrapping paper and particularly preferably at least 65% of the weight of the wrapping paper.
  • the cellulose fibers are necessary so that the effect of the substance which accelerates the thermal breakdown of cellulose can also be easily recognized optically from the change in color.
  • the cellulose fibers are obtained from one or more plants that are selected from the group consisting of conifers, deciduous trees, spruce, pine, fir, beech, birch, eucalyptus, flax, hemp, jute, ramie, abaca, sisal, kenaf and cotton.
  • the cellulose fibers can also be wholly or partly fibers made from regenerated cellulose, such as Tencel TM fibers, Lyocell TM fibers, viscose fibers or Modal TM fibers.
  • the cellulose fibers are preferably at least partially bleached because the white color of the bleached cellulose fibers makes the color change more easily recognizable.
  • the share of un- bleached cellulose fibers, which usually have a light brown to dark brown color, should preferably be at most 50% of the mass of the cellulose fibers.
  • the wrapping paper according to the invention can also contain one or more fillers.
  • the total amount of fillers preferably makes up at most 40%, particularly preferably at least 10% and at most 38% and very particularly preferably at least 20% and at most 35% of the mass of the wrapping paper.
  • the proportion of fillers can have a beneficial effect on the air permeability, color and opacity of the wrapping paper, so that a change in color when the aerosol-generating article made from it is heated is easier to see.
  • the filler or fillers are preferably white, water-insoluble particles and can particularly preferably be selected from the group consisting of calcium carbonate, magnesium carbonate, magnesium oxide, magnesium hydroxide, aluminum hydroxide, talc, kaolin and titanium dioxide.
  • the wrapping paper can also contain other substances that are required for the production of the wrapping paper or give the wrapping paper other special properties.
  • substances can be, for example, pigments, dyes, sizing agents, starch, retention aids or processing aids and can be selected by the person skilled in the art according to type and amount on the basis of his experience.
  • the wrapping paper preferably does not contain any substances that accelerate the breakdown of cellulose, or only in an amount that is 0.5% of the weight of the wrapping paper, particularly preferably 0.25% of the weight of the wrapping paper and most preferably does not exceed 0.1% of the weight of the wrapping paper per area. Higher proportions of these substances would make the change in color of the wrapping paper more difficult to detect in comparison to the partial areas in which the said composition was applied.
  • a composition is applied over the entire surface or in partial areas to the wrapping paper, comprising a binding agent and a substance that accelerates the thermal degradation of cellulose.
  • the amount of binder that is applied in partial areas of the wrapping paper should be rather small because the binder reduces the air permeability and increases the coefficient of variation of the air permeability.
  • the amount of binder that is applied in partial areas of the wrapping paper is therefore preferably at most 15%, especially preferably at most 10% and very particularly preferably at most 5% of the mass of the wrapping paper per area.
  • the binder is preferably selected from the group consisting of starch, starch derivatives, cellulose derivatives, carboxymethyl cellulose, alginates, pectins, polyvinyl alcohol, guar and gum arabic or mixtures thereof.
  • the substance that accelerates the thermal degradation of cellulose is in the areas of the wrapping paper in which the composition containing it is applied in an amount preferably of at least 0.2 g / m 2 and at most 8.0 g / m 2 , particularly preferably of at least 0.3 g / m 2 and at most 7.0 g / m 2 and very particularly preferably of at least 0.5 g / m 2 and at most 5.0 g / m 2 .
  • the amount of substance that accelerates the thermal breakdown of cellulose is selected here so that a change in color can be seen particularly well, especially with the naked eye, even in poor lighting conditions.
  • the amount of the applied substance, which accelerates the thermal degradation of the cellulose can also be characterized in relation to the amount of the cellulose fibers contained in the wrapping paper.
  • This quantitative ratio is important because, according to the invention, the substance should act on the cellulose fibers.
  • the ratio of the amount of said substance in g / m 2 based on the area to which the composition containing it is applied and the amount of pulp fibers in the wrapping paper in g / m 2 is preferably at least 0.05 and at most 0.45, particularly preferably at least 0.06 and at most 0.30 and very particularly preferably at least 0.07 and at most 0.25.
  • the most favorable ratio in each case depends on the specific substance that accelerates the thermal breakdown of the cellulose.
  • the substance that accelerates the thermal breakdown of cellulose is preferably one or more of the chemical compounds selected from the group consisting of citrates, malates, tartrates, acetates, nitrates, succinates, fumarates, gluconates, glycolates, lactates, oxylates, salicylates, a Hydroxycaprylates, hydrogen carbonates, carbonates, chlorides, polyphosphates, phosphonates and phosphates and particularly preferably one or more of the chemical compounds selected from the group consisting of tri-sodium citrate, tripotassium citrate, monoammonium phosphate, sodium acetate, potassium acetate, sodium hydrogen carbonate, potassium hydrogen carbonate, sodium carbonate, potassium carbonate, sodium carbonate , Potassium sodium tartrate, potassium formate, sodium formate, sodium nitrate and potassium nitrate.
  • the chemical compounds selected from the group consisting of citrates, malates, tartrates, acetates, nitrates, succinates,
  • the substance is one or more of the chemical compounds selected from the group consisting of tripotassium citrate, monoammoni- umphosphate, sodium hydrogen carbonate, sodium acetate and potassium carbonate.
  • the very particularly preferred chemical compounds cause a particularly noticeable change in the color of the cellulose, as they promote the formation of carbon particularly well.
  • the sub-areas in which the said composition is applied are so designed that they make up at least 0.5% and at most 70%, preferably at least 1% and at most 60%, particularly preferably at least 1% and at most 20% and very particularly preferably at least 1% and at most 10% of the area of the wrapping paper.
  • the sub-areas must also be designed in such a way that at least one of the two the following criteria (3), (4) are met:
  • the average air permeability of the wrapping paper is greater than 10 cm 3 / (cm 2 -min-kPa) and less than 20 cm 3 / (cm 2 -min-kPa), then the standard deviation of the air permeability is at most 6 cm 3 / (cm 2 -min-kPa), before given at most 5.5 cm 3 / (cm 2 -min-kPa) and particularly preferably at most 5 cm 3 / (cm 2 -min-kPa) and if the average air permeability of the Umhüllungspa piers at least 20 cm 3 / (cm 2 -min-kPa) and at most 200 cm 3 / (cm 2 -min-kPa), then the coefficient of variation of the air permeability is at most 30%, preferably at most 27.5% and particularly preferred at most 25%, or
  • each imaginary circle with a diameter of D mm on the wrapping paper contains at least one area in which the composition is not applied, the diameter D being in mm the mean air permeability x in cm 3 / (cm 2 -min-kPa)
  • the composition can be applied over the entire surface or in partial areas.
  • the subareas in which the composition is applied to the wrapping paper preferably designed so that each imaginary circle with a diameter of 12 mm, particularly preferably with a diameter of 10 mm and very particularly preferably with a diameter of 8 mm on the wrapping paper contains at least one area in which the composition is not applied.
  • the average air permeability of the wrapping paper is at least o cm 3 / (cm 2 -min-kPa) and at most 10 cm 3 / (cm 2 -min-kPa) and the composition is only applied in partial areas, then the partial areas in to which said composition is applied, designed so that it is preferably at least 0.5% and at most 70%, particularly preferably at least 1% and at most 60%, particularly preferably at least 1% and at most 20% and in particular at least 1% and at most Make up at least 10% of the area of the wrapping paper.
  • Criteria (3) and (4) are not equivalent in their effect, which means that the fulfillment of one criterion does not necessarily result in the fulfillment of the other, but each is sufficient to obtain a wrapping paper according to the invention that works well on aerosol generating articles. The same applies to criteria (1) and (2) mentioned above.
  • the aerosol-generating article according to the invention is rod-shaped and comprises an aerosol-generating material and the wrapping paper according to the invention, the wrapping paper wrapping the aerosol-generating material and wherein in the intended use of the aerosol-generating article, the aerosol-generating material is only heated but not burned.
  • the aerosol-generating material is heated to a maximum temperature of at least 120 ° C and at most 500 ° C and particularly preferably to a maximum temperature of at least 200 ° C and at most 400 ° C.
  • the aerosol generating article additionally contains a filter.
  • the wrapping paper according to the invention can be produced by a method according to the invention which comprises the following steps A-C:
  • the wrapping paper obtained in step C comprises cellulose fibers, at least 50% of the mass of the wrapping paper being formed by cellulose fibers, and the wrapping paper obtained in step C has an average air permeability of at least o cm 3 / (cm 2 -min-kPa) and at most 200 cm 3 / (cm 2 -min-kPa), measured with a measuring head with 2 mm x 15 mm according to ISO 2965: 2009, and
  • step B a composition is applied which comprises a substance accelerating the thermal degradation of cellulose and a binder, and which, if the average air permeability of the wrapping paper obtained in step C is at least 10 cm 3 / (cm 2 -min-kPa) and at most 200 cm 3 / (cm 2 -min-kPa) is applied in step B in partial areas that cover at least 0.5% and at most 70% of the area of the wrapping paper,
  • the wrapping paper obtained in step C if the average air permeability of the wrapping paper obtained in step C is at least 10 cm 3 / (cm 2 -min-kPa) and at most 200 cm 3 / (cm 2 -min-kPa), at least one of the following two criteria (1), (2) met:
  • the average air permeability of the wrapping paper obtained in step C is at least 10 cm 3 / (cm 2 -min-kPa) and at most 20 cm 3 / (cm 2 -min-kPa), then the standard deviation of the air permeability is at most 6 cm 3 / (cm 2 -min-kPa) and if the average air permeability of the wrapping paper obtained in step C is at least 20 cm 3 / (cm 2 -min-kPa) and at most 200 cm 3 / (cm 2 -min-kPa) then the coefficient of variation of the air permeability is at most 30%, or
  • the partial areas to which the composition is applied in step B are designed so that each imaginary circle with a diameter of D mm on the wrapping paper contains at least one area in which the composition is not applied, the diameter D in mm from the mean air permeability x in cm 3 / (cm 2 -min-kPa) of the wrapping paper obtained after step C through iPmax D m in) (A Iß)
  • the same necessary, preferred, particularly preferred and very particularly preferred value ranges and properties apply as were already mentioned for the wrapping paper according to the invention.
  • the composition which is applied in step B comprises a substance which accelerates the thermal degradation of cellulose, a binder and a solvent, the solvent preferably being water.
  • the substance in the composition of step B that accelerates the thermal breakdown of cellulose is a chemical compound or a mixture of two or more chemical compounds and preferably dissolves in the solvent of the composition.
  • the substance contained in the composition of step B, which accelerates the thermal degradation of the cellulose is preferably one or more of the chemical compounds selected from the group consisting of citrates, malates, tartrates, acetates, nitrates, succinates, fumarates, gluconates, glycolates, Lactates, oxylates, salicylates, ⁇ -hydroxycaprylates, hydrogen carbonates, carbonates, chlorides, polyphosphates, phosphates and phosphates and particularly preferably one or more of the chemical compounds selected from the group consisting of trisodium citrate, tripotassium citrate, monoammonium phosphate, sodium acetate, potassium acetate, Sodium hydrogen carbonate, potassium hydrogen carbonate, sodium carbonate potassium carbonate, sodium tartrate, potassium sodium tartrate, potassium formate, sodium formate, sodium nitrate and potassium nitrate.
  • the substance is very particularly preferably one or more of the chemical compounds selected from the group consisting of tripotassium citrate, monoam
  • the composition that is applied to the wrapping base paper in step B contains the substance that accelerates the thermal degradation of the cellulose in an amount of preferably at least 3% and at most 30%, particularly preferably at least 4% and at most 25% and very particularly preferably at least 5% and at most 20%, each based on the mass of the composition.
  • the binder in the composition of step B is preferably selected from the group consisting of starch, starch derivatives, cellulose derivatives, carboxymethyl cellulose, alginates, pectins, polyvinyl alcohol, guar and gum arabic or mixtures thereof.
  • the composition that is applied to the wrapping base paper in step B contains the binder in an amount of preferably at least 0.1% and at most 15%, particularly preferably at least 0.3% and at most 12% and very particularly preferably at least 0.5 % and at most 10%, each based on the amount of the composition.
  • the amount of binder also depends on the requirements of the application process in step B, in particular with regard to the viscosity of the composition.
  • the solvent is largely removed from the composition and the applied dried composition is then in an amount of preferably at least 0.2 g / m 2 and at most 8 g / m 2 , particularly preferably at least 0.5 g / m 2 2 and at most 6 g / m 2 and very particularly preferably at least 1 g / m 2 and at most 5 g / m 2 applied based on the area to which the composition was actually applied.
  • step B can be carried out by various methods, printing and spraying being preferred and gravure printing or flexographic printing being very particularly preferred.
  • the drying process in step C can be carried out by various processes, preferably by contact with one or more heated cylinders, contact with hot air, infrared radiation, microwave radiation and combinations thereof.
  • step C after step C it also comprises the additional steps D and E, where in step D water is applied over the entire surface of the wrapping paper obtained in step C and in step E the wrapping paper from step D is dried, very particularly preferably by contact with one or more heated cylinders.
  • step D water is applied over the entire surface of the wrapping paper obtained in step C and in step E the wrapping paper from step D is dried, very particularly preferably by contact with one or more heated cylinders.
  • Fig. 1 shows an example of a wrapping paper and the positions at which the ten
  • Measurements to determine the standard deviation and the coefficient of variation of the air permeability can be carried out.
  • wrapping base paper in step A of the method of the present invention two papers referred to as wrapping base paper A and wrapping base paper B were used.
  • Wrapping base paper A had a basis weight of 29 g / m 2 and contained 69% wood pulp fibers and 31% precipitated calcium carbonate as filler. The percentages relate to the mass of the wrapping base paper.
  • the wood pulp fibers were a mixture of pulp fibers obtained from conifers and deciduous trees.
  • Wrapping base paper A had an average air permeability of 60.1 CU, the air permeability being measured according to ISO 2965: 2009 with a measuring head with an opening area of 2 mm x 15 mm at ten randomly selected positions and a mean value calculated from these ten measurements .
  • Wrapping base paper B had a basis weight of 24 g / m 2 and contained 71% wood pulp fibers and 29% precipitated calcium carbonate as filler.
  • the percentages relate to the mass of the wrapping base paper.
  • the wood pulp fibers were a mixture of pulp fibers obtained from conifers and deciduous trees.
  • Wrapping base paper B had an average air permeability of 74.8 CU, the air permeability being measured according to ISO 2965: 2009 with a measuring head with an opening area of 2 mm x 15 mm at ten randomly selected positions and a mean value calculated from these ten measurements has been.
  • compositions were applied to the wrapping base papers A and B in partial areas in the form of a pattern of intersecting 1.5 mm wide lines by gravure printing so that the partial areas to which the composition was applied accounted for about 40% of the area of the wrapping base paper. - l6 -
  • the amount of the composition which was applied in the partial areas was 30 g / m 2 for wrapping base paper A and 25 g / m 2 for wrapping base paper B, based on the area to which the composition was actually applied.
  • the wrapping papers were then dried according to step C of the method according to the invention.
  • the parameters of the wrapping papers that are relevant for production are given in Table 1.
  • the "No.” column indicates the number of the wrapping paper, the "BP” column indicates which wrapping base paper was used for production.
  • the “Composition” column shows the binder and the substance that accelerates the thermal breakdown of the cellulose in% based on the mass of the composition.
  • the type of binding agent is indicated, with “CMC” meaning carboxymethyl cellulose and “St” meaning starch.
  • the type of substance is also indicated, with “TKZ” tripotassium citrate, “MAP” monoammonium phosphate, “NaAc” sodium acetate and “KCrb” potassium carbonate mean.
  • the “Wrapping paper” column shows the amounts of binding agent and the substance that accelerates the thermal degradation of cellulose in g / m 2 and in% based on the weight per unit area of the wrapping paper, as well as the “V” ratio of the amount of said substance in g / m 2 to the amount of cellulose fibers in the wrapping paper in g / m 2 .
  • the air permeability was measured at ten random positions in accordance with ISO 2965: 2009 with a measuring head with an opening area of 2 mm x 15 mm and the mean value was calculated from this.
  • the average air permeability was between 42 cm 3 / (cm 2 -min-kPa) and 48 cm 3 / (cm 2 -min-kPa)
  • the mean air permeability for the wrapping papers 13 to 18, which were made from the wrapping base paper B was between 50 cm 3 / (cm 2 -min-kPa) and 55 cm 3 / (cm 2 -min-kPa).
  • the coefficient of variation of the air permeability was determined in accordance with ISO 2965: 2009 using a measuring head with an opening area of 2 mm x 15 mm.
  • the measuring method is explained with reference to FIG. 1.
  • the composition is applied in the form of intersecting lines 2 and the measuring head with an opening area of 2 mm x 15 mm was placed on ten adjacent positions 3a to 3j, the individual positions offset by 3 mm so that there was a distance of 1 mm between the surfaces.
  • the air permeability was measured at each of positions 3a to 3j. From this, the mean and the standard deviation were determined and the coefficient of variation calculated.
  • the diameter of the imaginary circle was determined on the basis of the measured average air permeability for each of the wrapping papers 1 to 18.
  • the pattern with 1.5 mm wide crossing lines obviously fulfills the requirements of criteria (2) and (4) and thus these criteria are fulfilled for all wrapping papers 1 to 18.
  • the wrapping papers 1 to 18 were heated to 130 ° C. for 5 minutes. Color changes on the wrapping papers 1, 3, 6, 8, 11, 12, 13 and 17 were already visible after one minute. After 5 minutes, all of the wrapping papers according to the invention showed a clear, irreversible color change to yellowish hues in the partial areas in which the composition was applied and, with prolonged heating, to light brown to dark brown hues that clearly differed from the unchanged or hardly changed color could be distinguished outside of these sub-areas.
  • aerosol-generating articles were produced from the wrapping papers, which were heated as intended in a heater. After removing the aerosol-generating articles from the heater, a clear color change was also found in the printed areas, so that used and unused aerosol-generating articles could be clearly distinguished from one another.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

L'invention concerne un papier d'emballage pour des articles de génération d'aérosol, qui comprend des fibres de cellulose et sur lequel est appliquée une composition qui comprend une substance accélérant la dégradation thermique de la cellulose et un liant. Au cas où la perméabilité à l'air moyenne du papier d'emballage serait supérieure ou égale à 10 cm³/(cm²·min·kPa), ladite composition est appliquée uniquement dans des parties qui recouvrent au moins 0,5 % et au plus 70 % de la surface du papier d'emballage.
EP20715803.1A 2019-05-15 2020-03-26 Papier d'emballage avec indicateur d'utilisation pour les articles générateurs d'aérosols Active EP3775374B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019112777.7A DE102019112777B3 (de) 2019-05-15 2019-05-15 Umhüllungspapier mit gebrauchsindikator für aerosolerzeugende artikel
PCT/EP2020/058465 WO2020229037A1 (fr) 2019-05-15 2020-03-26 Papier d'emballage à indicateur de consommation pour articles de génération d'aérosol

Publications (2)

Publication Number Publication Date
EP3775374A1 true EP3775374A1 (fr) 2021-02-17
EP3775374B1 EP3775374B1 (fr) 2022-12-21

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EP20715803.1A Active EP3775374B1 (fr) 2019-05-15 2020-03-26 Papier d'emballage avec indicateur d'utilisation pour les articles générateurs d'aérosols

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US (1) US20220256913A1 (fr)
EP (1) EP3775374B1 (fr)
JP (1) JP2022533327A (fr)
KR (1) KR20220009378A (fr)
CN (1) CN113795629B (fr)
BR (1) BR112021020817A2 (fr)
DE (1) DE102019112777B3 (fr)
ES (1) ES2939937T3 (fr)
PL (1) PL3775374T3 (fr)
WO (1) WO2020229037A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10512286B2 (en) * 2017-10-19 2019-12-24 Rai Strategic Holdings, Inc. Colorimetric aerosol and gas detection for aerosol delivery device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009006570A2 (fr) * 2007-07-03 2009-01-08 Schweitzer-Mauduit International, Inc. Articles à fumer ayant des caractéristiques réduites de prédisposition à l'inflammation
EP2551407B1 (fr) * 2011-07-28 2013-06-19 delfortgroup AG Papier d'enveloppe de filtre comprenant de l'huile
AT511936B1 (de) * 2011-12-01 2013-04-15 Tannpapier Gmbh Mundstückbelagspapier für einen rauchartikel
DE102012108255B4 (de) * 2012-09-05 2014-03-20 Delfortgroup Ag Zigarettenpapier mit homogenem optischen Eindruck, Verfahren zu seiner Herstellung sowie Zigarette
DE102013106516B3 (de) * 2013-06-21 2014-10-09 Delfortgroup Ag Zigarettenpapier, das einer zigarette ein gleichmässiges zugprofil verleiht
CN104005259B (zh) * 2014-05-30 2016-06-08 滁州卷烟材料厂 一种具有阻燃效果的高透气水松纸原纸及其制备方法
DE102015105882B4 (de) * 2015-04-17 2017-06-08 Delfortgroup Ag Umhüllungspapier mit hohem Kurzfaseranteil und Rauchartikel
DE102015107829B4 (de) * 2015-05-19 2017-06-14 Delfortgroup Ag Umhüllungspapier, Verfahren zu dessen Herstellung und Zigarette mit einem Umhüllungspapier
US10194691B2 (en) 2016-05-25 2019-02-05 R.J. Reynolds Tobacco Company Non-combusting smoking article with thermochromatic label

Also Published As

Publication number Publication date
EP3775374B1 (fr) 2022-12-21
CN113795629B (zh) 2023-06-30
JP2022533327A (ja) 2022-07-22
KR20220009378A (ko) 2022-01-24
CN113795629A (zh) 2021-12-14
ES2939937T3 (es) 2023-04-28
BR112021020817A2 (pt) 2021-12-14
DE102019112777B3 (de) 2020-08-06
US20220256913A1 (en) 2022-08-18
WO2020229037A1 (fr) 2020-11-19
PL3775374T3 (pl) 2023-04-24

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