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EP3700366B1 - Segment biodégradable d'un article à fumer - Google Patents

Segment biodégradable d'un article à fumer Download PDF

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Publication number
EP3700366B1
EP3700366B1 EP19787177.5A EP19787177A EP3700366B1 EP 3700366 B1 EP3700366 B1 EP 3700366B1 EP 19787177 A EP19787177 A EP 19787177A EP 3700366 B1 EP3700366 B1 EP 3700366B1
Authority
EP
European Patent Office
Prior art keywords
segment
web material
smoking article
web
article according
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.)
Active
Application number
EP19787177.5A
Other languages
German (de)
English (en)
Other versions
EP3700366A1 (fr
Inventor
Dietmar Volgger
Stefan Bachmann
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
Priority to EP21198049.5A priority Critical patent/EP3970521B1/fr
Publication of EP3700366A1 publication Critical patent/EP3700366A1/fr
Application granted granted Critical
Publication of EP3700366B1 publication Critical patent/EP3700366B1/fr
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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
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • 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
    • 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
    • A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
    • A24D3/068—Biodegradable or disintegrable
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
    • 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
    • A24D3/17—Filters specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/08—Synthetic cellulose fibres from regenerated cellulose
    • 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
    • D21H21/22—Agents rendering paper porous, absorbent or bulky

Definitions

  • the invention relates to a segment of a smoking article, in particular a segment for cooling or filtering the aerosol flowing in the smoking article, which is more biodegradable than segments known from the prior art and which has a favorable combination of properties in terms of draw resistance and filtration efficiency.
  • Smoking articles are typically rod-shaped articles consisting of at least two rod-shaped segments arranged one after the other.
  • One segment contains a material capable of forming an aerosol when heated, and at least one other segment serves to influence properties of the aerosol.
  • the smoking article can be a filter cigarette in which a first segment contains the aerosol-forming material, in particular tobacco, and a further segment is designed as a filter and is used to filter the aerosol.
  • the aerosol is generated by burning the aerosol-forming material, and the filter primarily serves to filter the aerosol and to provide the filter cigarette with a defined draw resistance.
  • the smoking article can also be a so-called heated tobacco product in which the aerosol-forming material is only heated but not burned. This reduces the number and amount of harmful substances in the aerosol.
  • Such a smoking article also consists of at least two, but more often more, in particular four segments.
  • One segment contains the aerosol forming material, which typically comprises tobacco, reconstituted tobacco, or tobacco processed by other processes.
  • Other segments in the smoking article are used to direct the aerosol, cool the aerosol or filter the aerosol.
  • the segments are mostly encased by an encasing material. Paper is very often used as a wrapping material.
  • segment is understood to mean the segment of a smoking article, which does not contain the aerosol-forming material, but is used, for example, to forward, cool or filter the aerosol.
  • a first requirement is to filter the aerosol. This filtration is often selective, which means it removes certain substances from the aerosol and thus influences the taste of the aerosol. With regard to filtration, one would like to have both segments that have a particularly high filtration efficiency, for example if they are primarily used for filtration, and those that have a particularly low filtration efficiency, for example if they are primarily intended to forward or cool the aerosol.
  • Another requirement is to generate a certain resistance to draw.
  • a certain resistance that is, a certain pressure difference, in order to suck in aerosol from the smoking article.
  • the segments for smoking articles are therefore often designed in such a way that they have a certain draw resistance.
  • the aerosol has a temperature of several 100°C and must be cooled to a temperature that the consumer can tolerate while it flows through the smoking article. In the prior art, this is typically done by removing heat from the aerosol.
  • the filter paper comprises fibers comprising cellulose fibers, with at least 80% by weight of the filter paper being formed by long-fiber cellulose fibers. Of the fibers, a proportion of between 2% and 10% by number of fibers has a length of less than 0.2 mm.
  • the air permeability of the filter paper measured according to ISO 2965:2009 is between 500 cm min-1 kPa-1 and 15000 cm min-1 kPa-1.
  • the number-average length of the fibers in the filter paper is more than 1 mm and less than 5 mm, and the number-average width of the fibers in the filter paper is between 10 ⁇ m and 50 ⁇ m.
  • the object of the invention is to provide a segment for a smoking article that is more biodegradable than conventional segments in smoking articles and that is no worse than conventional segments in terms of filtration properties, cooling effect and draw resistance.
  • fiber-based sheet materials are suitable for segments in smoking articles to at least meet the biodegradability requirement. All web-like materials made from staple fibers that can be formed into segments for smoking articles are referred to here as fiber-based web materials. Suitable fiber-based web materials are, in particular, paper or fleece. In the following, “web material” is understood without exception as a fiber-based web material for use in smoking articles.
  • the inventors have further found that a certain combination of properties of the web material and the segment produced from it allows the various additional requirements to be met in a particularly favorable manner.
  • the segment according to the invention comprises a wrapping material and a web material which is wrapped by the wrapping material.
  • the sheet material comprises at least 40% cellulosic fibers and less than 10% non-natural polymers, the percentages being based on the mass of the sheet material.
  • the web material has a basis weight of at least 10 g/m 2 and at most 70 g/m 2 , a thickness of at least 25 ⁇ m and at most 400 ⁇ m.
  • said web material has an area of at least 20 cm 2 and at most 90 cm 2 per cm 3 volume of the segment.
  • the segment made of the web material has a density of at least 50 kg/m 3 and at most 300 kg/m 3 .
  • the wrapping material is paper with a basis weight of at least 20 g/m 2 and at most 150 g/m 2 and has a flexural strength of at least 0.05Nmm and at most 0.90Nmm.
  • the draw resistance, the filtration efficiency and the cooling effect of the segment are determined by the structure and amount of the web material in the segment.
  • a porous structure of the web material increases heat transfer and filtration efficiency.
  • the amount of web material in the segment also plays a role. It is specified on the one hand by the area of the web material in the segment per volume of the segment, with higher area per volume increasing draw resistance, filtration efficiency and heat transfer, and on the other hand by the density of the segment without wrapping material, with higher density primarily increasing draw resistance.
  • the density of the web material and the segment also play a role in the cooling effect of the segment, in particular, because they influence the transfer of heat.
  • the sheet material in the segment of the smoking article comprises cellulosic fibers, with at least 40% of the mass of the sheet material being cellulosic fibers.
  • Cellulose fibers consist of natural polymers and are easily biodegradable, which results in a first advantage of the invention.
  • Another advantage essential to the invention derives from the fact that pulp fibers are hygroscopic.
  • the aerosol in the smoking article contains water and the cellulose fibers can absorb some of this water and thus contribute to cooling the aerosol. In contrast to segments made of other materials, no more heat is dissipated, but part of the water in the aerosol is retained with the thermal energy stored in the water. An aerosol thus reaches the consumer of the smoking article, the temperature of which is not necessarily significantly reduced, but which contains significantly less thermal energy and is therefore more tolerable for the consumer.
  • the proportion of cellulose fibers in the web material is therefore preferably higher and is preferably at least 60%, particularly preferably at least 90% and very particularly preferably at least 99%, in each case based on the mass of the web material.
  • the cellulose fibers can be wood cellulose fibers from hardwoods or conifers, but also from other plants such as hemp, flax, sisal, jute, abaca or esparto grass and are produced according to the methods known from the prior art. Mixtures of pulp fibers from different origins can be used.
  • the web material should contain less than 10% of its mass of non-natural polymers.
  • Natural polymers are polymers that have been obtained directly from natural raw materials without any chemical change or without changing the composition, or are chemically identical to polymers obtained from nature. Concretely, pulp fibers consist of natural polymers, and regenerated cellulose fibers also belong to natural polymers. In the case of cellulose acetate or polylactides, on the other hand, chemical changes have taken place so that they belong to the non-natural polymers, and although the starting materials occur in nature, these starting materials have at least been modified in such a way that rapid biodegradability is no longer guaranteed. Likewise, all polymers derived from mineral oils such as polyethylene, polypropylene, polyester or polystyrene are not natural polymers.
  • the sheet material contains less than 5% by mass of the sheet material non-natural polymers and more preferably less than 1% by mass of the sheet material. Optimum biodegradability occurs when the web material does not contain any non-natural polymers, which is why this is a particularly preferred embodiment.
  • the web material can contain fibers made from regenerated cellulose, such as viscose fibers, modal fibers, Lyocell® or Tencel® , the proportion of which is preferably less than 60% of the mass of the web material and particularly preferably less than 40% of the mass of the web material.
  • the amount of regenerated cellulose fibers can be chosen to further optimize the filtration efficiency.
  • the web material can also contain fillers, the fillers preferably being formed by calcium carbonate, magnesium oxide, magnesium hydroxide, aluminum hydroxide, titanium dioxide and silicates or mixtures thereof.
  • a particularly preferred filler is precipitated calcium carbonate.
  • the proportion of fillers based on the mass of the web material is preferably at least 0%, particularly preferably at least 5% and very particularly preferably at least 10% and preferably at most 40%, particularly preferably at most 35% and very particularly preferably at most 30%. Since fillers absorb significantly less water than cellulose fibers, an increase in the proportion of fillers for the same basis weight of the web material can contribute to a reduction in the filtration efficiency for water. This can also influence the cooling effect of the segment.
  • the web material can also be coated.
  • the web material is coated with polyvinyl alcohol or a polysaccharide, which reduces the filtration efficiency for water and thus the aerosol is dried less.
  • the polysaccharide is selected from the group consisting of starch, carboxymethyl cellulose, guar, dextrin, pectin or mixtures thereof. It should be noted that polyvinyl alcohol is not a natural polymer and the amount of non-natural polymers does not exceed 10% of the mass of the web material.
  • the web material can also be impregnated. In contrast to coating, with impregnation the applied composition not only remains on the surface but penetrates significantly into the structure of the web material.
  • the web material is impregnated with glycerol or propylene glycol. these substances can increase the filtration efficiency for glycerol, which often acts as a humectant in the aerosol forming material of the smoking article and promotes the formation of the aerosol.
  • the sheet material may also contain flavorings to affect the taste of the aerosol.
  • the flavorings can be contained in the web material in chemically bound form or physically bound form, for example encapsulated.
  • the flavorings are preferably selected from the group consisting of menthol, ethyl vanillin glucoside, vanillin and ethyl vanillin.
  • sizing agents for example AKD, ASA or resins or other additives and processing aids
  • ASA sizing agents
  • resins for example AKD, ASA or resins or other additives and processing aids
  • processing aids can be selected by the person skilled in the art based on his experience, although it should be noted that the amount of non-natural polymers must be less than 10% of the mass of the web material .
  • the basis weight of the web material is between 10 g/m 2 and 70 g/m 2 and preferably between 20 g/m 2 and 60 g/m 2 and particularly preferably between 25 g/m 2 and 50 g/m 2 .
  • the basis weight can be determined according to ISO 536:2012.
  • the choice of basis weight influences the processability of the web material, in particular the process of crimping or folding, and the material costs for the segment.
  • the preferred intervals reconcile the cost of materials with the segment properties achieved particularly well.
  • the thickness of the web material is between 25 ⁇ m and 400 ⁇ m and preferably between 35 ⁇ m and 150 ⁇ m and particularly preferably between 40 ⁇ m and 100 ⁇ m.
  • the caliper of the web material is important to processability and the preferred intervals provide a caliper particularly well suited for crimping or folding for desired segment properties.
  • the thickness can be determined according to ISO 534:2011.
  • the basis weight and the caliper together influence the properties of the segment made from the web material via the density.
  • the density of the web material is preferably between 100 kg/m 3 and 1200 kg/m 3 , more preferably between 200 kg/m 3 and 700 kg/m 3 and most preferably between 300 kg/m 3 and 600 kg/m 3 .
  • the density describes the pore structure of the web material and is therefore an important parameter for the filtration efficiency, the heat transfer and the draw resistance.
  • the preferred intervals allow for a favorable combination of draw resistance and filtration efficiency.
  • the density can be determined according to ISO 534:2011.
  • the segment contains between 20 cm 2 and 90 cm 2 sheet material per cm 3 volume of the segment, preferably between 30 cm 2 /cm 3 and 80 cm 2 /cm 3 and more preferably between 35 cm 2 /cm 3 and 70 cm 2 /cm 3 , each related to the volume of the segment.
  • the area of the web material per volume of the segment describes how densely the web material is packed in the segment. It therefore affects the draw resistance, but also the filtration properties, the heat transfer and the hardness of the segment.
  • the area of the sheet material can be determined, for example, by weighing the sheet material and calculating from the nominal or measured basis weight of the sheet material.
  • the density of the segment itself, without the covering material is between 50 kg/m 3 and 300 kg/m 3 , preferably between 60 kg/m 3 and 250 kg/m 3 and particularly preferably between 70 kg/m 3 and 200 kg/m m3 .
  • This parameter also has a significant impact on the draw resistance, filtration efficiency and segment hardness.
  • the density of the segment is given without the wrap material as the wrap material has little effect on draw resistance, filtration efficiency or heat transfer.
  • the density of the segment can be determined by calculation. First of all, the volume of the segment is determined, which can be calculated from the diameter and the length, for example, in the case of a cylindrical segment. The influence of the cladding material on the diameter can be neglected.
  • the mass of the segment can be determined by weighing with the segment wrapped in the wrapping material.
  • the mass of the wrapping material can be determined from the area of the wrapping material and the nominal or measured basis weight of the wrapping material. For example, for a typical cylindrical segment, the area of the wrapping material is given by the perimeter of the segment and the overlap of the wrapping material on itself and the length of the segment.
  • the mass of the covering material is subtracted from the mass of the segment with covering material and its density is calculated by dividing it by the volume of the segment.
  • a numerical example is detailed below.
  • This parameter Z should be at least 1350 and at most 2600 and preferably at least 1400 and at most 2400. This is the only way to obtain a segment with favorable properties and, in the preferred intervals, a particularly favorable compromise between draw resistance and filtration properties.
  • the wrapping material of the segment is a paper with a basis weight of at least 20 g/m 2 and at most 150 g/m 2 and more preferably a paper with a basis weight of at least 50 g/m 2 and at most 120 g/m 2 .
  • the density of the segment and thus the hardness are comparatively low. Therefore, covering materials with a basis weight of 50 g/m 2 to 150 g/m 2 can further improve the hardness of the segment.
  • the weight per unit area must not be too high, because otherwise the restoring forces of the encapsulation material make it difficult to produce a segment, in particular to bond the encapsulation material to itself.
  • the flexural rigidity of the covering material can be just as important as the weight per unit area in order to set a favorable hardness for the segment.
  • the bending stiffness should therefore be at least 0.05 Nmm and at most 0.90 Nmm, preferably at least 0.10 Nmm and at most 0.80 Nmm.
  • Flexural stiffness can be measured according to ISO 5628:2012, specifically the two-point method described in that standard. The bending stiffness can depend on the direction in which the sample was taken from the sheet material. The features indicated by the above preferred and particularly preferred interval are met if the flexural rigidity in at least one direction is in the indicated preferred or particularly preferred interval.
  • the segment according to the invention is preferably cylindrical and preferably has a diameter of at least 5 mm and at most 9 mm, particularly preferably at least 7 mm and at most 8.5 mm.
  • the segment according to the invention is preferably at least 4 mm and at most 40 mm long, particularly preferably at least 6 mm and at most 35 mm and very particularly preferably at least 10 mm and at most 28 mm.
  • the segment according to the invention can be part of a smoking article, so that a smoking article according to the invention comprises an aerosol-forming material and the segment according to the invention.
  • the smoking article is a filter cigarette comprising at least one segment according to the invention and a further segment containing tobacco.
  • the segment according to the invention is a segment of the filter of a filter cigarette.
  • the smoking article is a smoking article that contains an aerosol-forming material that is only heated but not burned when the smoking article is used as intended, and that contains at least one segment according to the invention and a filter segment, the at least one segment according to the invention between the aerosol-forming Material and the filter segment is arranged.
  • the at least one segment according to the invention serves primarily to cool the aerosol.
  • the segment according to the invention can be produced from sheet material by methods known from the prior art. Such methods typically include crimping or folding the sheet material, forming a continuous strand from the sheet material, wrapping the continuous strand with a wrapping material, and cutting the wrapped strand into segments of the desired size.
  • Smoking articles using the segment of the present invention can be manufactured by methods well known in the art.
  • composition of the web materials is given in Table 1. All web materials were made of wood pulp, the two web materials nos. 22 and 23 also used Lyocell ® fibers, whereby the stated percentage of 40% refers to the mass of Lyocell ® fibers in the total fiber mass in the web material. Sheet materials 4-6, 12 and 13 also contained 29.5% by mass of precipitated calcium carbonate (CaCO 3 ).
  • Sheets 16-21, 24 and 25 were coated with an oxidized starch and sheets 14, 15, 18 and 19 were saturated with glycerol. Sheet materials 20 and 21 were impregnated with propylene glycol.
  • the basis weight of the web materials was determined according to ISO 536:2012 and the thickness and density according to ISO 534:2011. The results are shown in Table 2, in which the sheet material numbers correspond to those in Table 1.
  • the strands made from the web materials were cut into rods each 108 mm long and their mass was determined by weighing.
  • the data for the bars made from sheet materials 1-25 are given in Table 3, again with sheet material numbers corresponding to those in Table 1.
  • the mass in Table 3 is the mass of a 108 mm long bar with a covering material with a weight per unit area of 78 g/m 2 . From the mass of the rod and the known geometry, the density was calculated as follows.
  • the thickness of the wrapping material was neglected.
  • the mass of the covering material was subtracted from the mass of the rod with covering material and the result divided by the volume.
  • the Z parameter is independent of the geometry, in particular the diameter and length of the rod or segment, and characterizes only the internal structure of the segment.
  • the tensile strength of the 108 mm long bars was measured according to ISO 6565. Segments with a length of 18 mm were cut from the rods and smoking articles were made from them.
  • the smoking article was a so-called heated tobacco product in which the tobacco contained in the smoking article was only heated up.
  • the smoking article consisted of a segment with the tobacco in the direction of flow, followed by a transfer segment in which the aerosol can condense, and further followed by the segment according to the invention, which here serves primarily to cool the aerosol, and finally a filter segment.
  • the smoking articles were heated in a commercially available heater and smoked according to the procedure given in ISO 3308.
  • the filtration efficiency for nicotine, water and glycerol was measured for the segments made from sheet materials 8-25.
  • the filtration efficiency for a substance is the difference between the amount of substance that flows into the segment and the amount of substance that flows out of the segment, based on the amount of substance flowing into the segment.
  • the filtration efficiency is expressed as a percentage and was determined for nicotine, water and glycerol in this way for an 18 mm long segment.
  • Table 4 shows the draw resistance of a 108mm rod and the filtration efficiencies of a 18mm segment for nicotine, water and glycerol. Again, the web material numbers correspond to those in Table 1.
  • the segments made from sheet materials 1-25 are segments of the present invention having a Z parameter of about 1300 to about 2250.
  • the draw resistance of the 108 mm long rod is between 17.9 mmWG and 63.9 mmWG, allowing the design of segments that either direct the aerosol and only offer a low draw resistance or that filter the aerosol and also allow the draw resistance of the smoking article to increase.
  • a comparison of web materials 2 and 11, which are identical in composition, shows the influence of the density of the segment on the draw resistance.
  • a segment of sheet material 2 with a segment density of 73.3 kg/m 3 gives a draw resistance (108 mm) of 23.8 mmWG while a segment made of sheet material 11 with a density of 170.5 kg/m 3 gives a draw resistance (108mm) by 54.5mm WG.
  • the draw resistance is not determined solely by the density of the segment.
  • the web materials 6 and 7 have a similar basis weight, but the web material 6 contains 29.5% calcium carbonate and therefore has a significantly higher density.
  • the segments made from this have similar densities and the area of the web material per volume of the segment is also similar. Nevertheless, they differ significantly in the draw resistance, which is 63.9 mmWG for the bar (108 mm) made from web material 6 and only 30.5 mmWG for the bar (108 mm) made from web material 7. This shows that the density of the web material itself has an independent significance for the properties of the segment produced from it and is therefore also included as an essential property in the parameter Z.
  • the surface area of the web material per volume of the segment depends on the density of the web material and the density of the segment without the covering material and is therefore also an important property for the draw resistance and is therefore also included in the parameter Z.
  • the segments of the starch-coated sheet materials 16-21 all show a lower filtration efficiency for water than the segments from the comparable sheet materials 8, 9 and 11, while they hardly differ in the filtration efficiencies for nicotine and glycerol. This shows that an oxidized starch coating can be used to adjust the filtration efficiency for water.
  • a segment was made from sheet 7 with an unwrapped density of 90.4 kg/m 3 and an area of sheet material per volume of segment of 36.9 cm 2 /cm 3 .
  • the 108 mm long rod made from this sheet material only has a draw resistance of 12.3 mmWG, which is too low for use in smoking articles.
  • the hardness of the segment is not sufficient for further processing into a smoking article, despite the wrapping material at 78 g/m 2 . It should be noted that this segment satisfies all of the requirements of the invention, with the exception of those for the Z parameter.
  • a segment was prepared from sheet 12 with an unwrapped density of 233.9 kg/m 3 and an area of sheet material per volume of segment of 89.9 cm 2 /cm 3 .
  • this segment also meets all of the requirements according to the invention, with the exception of those for the Z parameter.
  • the two comparative examples not according to the invention thus show that the parameter Z is essential in order to obtain a segment with satisfactory properties.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Nonwoven Fabrics (AREA)
  • Biological Depolymerization Polymers (AREA)

Claims (15)

  1. Article à fumer, comprenant un matériau produisant un aérosol, qui, lors du fumage, n'est que chauffé, mais n'est pas brûlé, et un segment, qui comprend un matériau de feuille continue à base de fibres et un matériau de gainage, qui gaine le matériau de feuille continue à base de fibres, le matériau de feuille continue à base de fibres
    - comprenant au moins 40 % de fibres de cellulose et moins de 10 % de polymères non naturels, dans chaque cas par rapport à la masse du matériau de feuille continue,
    - ayant un grammage d'au moins 10 g/m2 et d'au plus 70 g/m2, et
    - une épaisseur d'au moins 25 µm et d'au plus 400 µm,
    le matériau de feuille continue mentionné présentant dans le segment une aire d'au moins 20 cm2 et d'au plus 90 cm2 par cm3 de volume du segment,
    le segment, sans le matériau de gainage, présentant une masse volumique d'au moins 50 kg/m3 et d'au plus 300 kg/m3, et
    un paramètre Z qui est défini par Z = ρ Web + 5 · ρ Web + 12 · A Web
    Figure imgb0009
    satisfaisant à l'inégalité 1 350 ≤ Z ≤ 2 600, dans laquelle
    ρWeb est la masse volumique du matériau de feuille continue en kg/m3,
    ρSeg est la masse volumique du segment sans le matériau de gainage en kg/m3, et AWeb est l'aire du matériau de feuille continue par volume du segment en cm2/cm3, le matériau de gainage étant formé d'un papier ayant un grammage d'au moins 20 g/m2 et d'au plus 150 g/m2, et
    dans lequel le matériau de gainage présente une rigidité en flexion d'au moins 0,05 Nmm et d'au plus 0,90 Nmm.
  2. Article à fumer selon la revendication 1, dans lequel la proportion des fibres de cellulose dans le matériau de feuille continue est d'au moins 60 %, de préférence d'au moins 90 % et d'une manière particulièrement préférée d'au moins 99 %, dans chaque cas par rapport à la masse du matériau de feuille continue.
  3. Article à fumer selon la revendication 1 ou 2, dans lequel les fibres de cellulose sont formées de fibres de pâte de bois provenant de bois de feuillu ou de bois résineux, sont obtenues d'autres plantes, en particulier le chanvre, le lin, le sisal, le jute, l'abaca ou l'alfa, ou sont formées à partir de mélanges de ceux-ci.
  4. Article à fumer selon l'une des revendications précédentes, dans lequel le matériau de feuille continue contient moins de 5 % de sa masse de polymères non naturels, de préférence contient moins de 1 % de sa masse de polymères non naturels, et d'une manière particulièrement préférée ne contient pas de polymères non naturels.
  5. Article à fumer selon l'une des revendications précédentes, dans lequel le matériau de bande continue contient des fibres de cellulose régénérée, en particulier des fibres de viscose, des fibres de modal, du Lyocell® ou du Tencel®, leur proportion étant de préférence inférieure à 60 % de la masse du matériau de feuille continue et d'une manière particulièrement préférée inférieure à 40 % de la masse du matériau de feuille continue.
  6. Article à fumer selon l'une des revendications précédentes, dans lequel le matériau de feuille continue contient des charges, les charges étant de préférence formées de carbonate de calcium, en particulier de carbonate de calcium précipité, d'oxyde de magnésium, d'hydroxyde de magnésium, d'hydroxyde d'aluminium, de dioxyde de titane, de silicates ou de mélanges de ceux-ci, la proportion des charges, par rapport à la masse du matériau de feuille continue, étant de préférence d'au moins 0 %, de préférence d'au moins 5 % et d'une manière particulièrement préférée d'au moins 10 %, et de préférence d'au plus 40 %, de préférence d'au plus 35 % et d'une manière particulièrement préférée d'au plus 30 %.
  7. Article à fumer selon l'une des revendications précédentes, dans lequel le matériau de feuille continue est couché, en particulier est couché de poly(alcool vinylique) ou d'un polysaccharide, le polysaccharide étant de préférence choisi dans le groupe consistant en l'amidon, la carboxyméthylcellulose, le guar, la dextrine, la pectine ou les mélanges de ceux-ci, et/ou le matériau de feuille continue est imprégné, en particulier est imprégné de glycérol ou de propylèneglycol.
  8. Article à fumer selon l'une des revendications précédentes, dans lequel le matériau de feuille continue contient des substances aromatisantes, les substances aromatisantes étant présentes de préférence sous une forme chimiquement liée ou sous une forme physiquement liée, par exemple encapsulées, dans le matériau de feuille continue, les substances aromatisantes étant de préférence choisies dans le groupe consistant en le menthol, l'éthylvanillineglucoside, la vanilline et l'éthylvanilline.
  9. Article à fumer selon l'une des revendications précédentes, dans lequel le grammage du matériau de feuille continue est compris entre 20 g/m2 et 60 g/m2, de préférence entre 25 g/m2 et 50 g/m2.
  10. Article à fumer selon l'une des revendications précédentes, dans lequel l'épaisseur du matériau de feuille continue est comprise entre 35 µm et 150 µm, de préférence entre 40 µm et 100 µm.
  11. Article à fumer selon l'une des revendications précédentes, dans lequel la masse volumique du matériau de feuille continue est comprise entre 100 kg/m3 et 1200 kg/m3, de préférence entre 200 kg/m3 et 700 kg/m3 et d'une manière particulièrement préférée entre 300 kg/m3 et 600 kg/m3.
  12. Article à fumer selon l'une des revendications précédentes, qui contient entre 30 cm2/cm3 et 80 cm2/cm3, de préférence entre 35 cm2/cm3 et 70 cm2/cm3 de matériau de feuille continue par cm3 de volume du segment.
  13. Article à fumer selon l'une des revendications précédentes, dont la masse volumique, sans le matériau de gainage, est comprise entre 60 kg/m3 et 250 kg/m3, de préférence entre 70 kg/m3 et 200 kg/m3, et/ou dans lequel le paramètre Z est d'au moins 1400 et d'au plus 2 400, et/ou dans lequel le matériau de gainage est formé d'un papier ayant un grammage d'au moins 50 g/m2 et d'au plus 120 g/m2.
  14. Article à fumer selon l'une des revendications précédentes, dans lequel le matériau de gainage présente une rigidité en flexion d'au moins 0,10 Nmm et d'au plus 0,80 Nmm, et/ou dans lequel le segment est cylindrique et a de préférence un diamètre d'au moins 5 mm et d'au plus 9 mm, d'une manière particulièrement préférée d'au moins 7 mm et d'au plus 8,5 mm, et/ou dans lequel le segment a une longueur d'au moins 4 mm et d'au plus 40 mm, de préférence a une longueur d'au moins 6 mm et d'au plus 35 mm, et d'une manière particulièrement préférée a une longueur d'au moins 10 mm et d'au plus 28 mm.
  15. Article à fumer selon l'une des revendications précédentes, dans lequel le segment est disposé entre le matériau produisant un aérosol et un segment formant filtre.
EP19787177.5A 2019-01-04 2019-10-08 Segment biodégradable d'un article à fumer Active EP3700366B1 (fr)

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KR20230160879A (ko) * 2021-04-27 2023-11-24 니뽄 다바코 산교 가부시키가이샤 향미 흡인 물품용 페이퍼 필터
GB202109117D0 (en) * 2021-06-24 2021-08-11 British American Tobacco Exports Ltd A component for an article for use in an aerosol provision system
KR102744943B1 (ko) * 2021-12-29 2024-12-23 주식회사 케이티앤지 흡연 물품 및 이를 포함하는 에어로졸 발생 시스템
KR20240153343A (ko) 2022-02-25 2024-10-22 제이티 인터내셔널 소시에떼 아노님 함침된 목탄 여과지와 향료 캡슐을 포함하는 에어로졸 생성 물품
ES2958821A1 (es) * 2022-07-19 2024-02-15 Miquel Y Costas & Miquel Sa Papel para filtro de cigarrillos y filtro que lo comprende
AT526354B1 (de) 2022-09-14 2024-02-15 Tannpapier Gmbh Hüll- oder Verpackungsmaterial

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DE102019100112B4 (de) 2020-09-10
CN111655052A (zh) 2020-09-11
BR112020005387A2 (pt) 2021-08-03
US20210195939A1 (en) 2021-07-01
ES2923499T3 (es) 2022-09-28
KR20200086255A (ko) 2020-07-16
JP2021511778A (ja) 2021-05-13
EP3970521B1 (fr) 2023-12-06
ES2973035T3 (es) 2024-06-18
WO2020141027A1 (fr) 2020-07-09
CN111655052B (zh) 2022-06-07
DE102019100112A1 (de) 2020-07-09
EP3700366A1 (fr) 2020-09-02
KR102369738B1 (ko) 2022-03-02
PH12020500534A1 (en) 2020-07-20

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