US20210195939A1 - Biodegradable Segment of a Smoking Article - Google Patents

Biodegradable Segment of a Smoking Article Download PDF

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Publication number
US20210195939A1
US20210195939A1 US16/651,208 US201916651208A US2021195939A1 US 20210195939 A1 US20210195939 A1 US 20210195939A1 US 201916651208 A US201916651208 A US 201916651208A US 2021195939 A1 US2021195939 A1 US 2021195939A1
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United States
Prior art keywords
segment
smoking article
web material
article according
web
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Abandoned
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US16/651,208
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English (en)
Inventor
Dietmar Volgger
Stefan Bachmann
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Delfortgroup AG
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Delfortgroup AG
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Assigned to DELFORTGROUP AG reassignment DELFORTGROUP AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BACHMANN, STEFAN, VOLGGER, DIETMAR
Publication of US20210195939A1 publication Critical patent/US20210195939A1/en
Abandoned legal-status Critical Current

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    • 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
    • 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
    • A24D3/067—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
    • 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
    • A24D3/14—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 to a segment for cooling or filtration of the aerosol flowing in the smoking article, which biodegrades better than segments known in the prior art and which provides a good combination of properties in relation to draw resistance and filtration efficiency.
  • Smoking articles are typically rod-shaped articles, which consist of at least two rod-shaped segments arranged next to each other.
  • One segment contains a material that is capable of forming an aerosol upon heating and at least one further segment serves to influence the 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 formed as a filter and serves the filtration of the aerosol.
  • the aerosol is produced by burning the aerosol-forming material and the filter primarily serves to filter the aerosol and to provide a defined draw resistance to the filter cigarette.
  • the smoking article can also be a so-called heated tobacco product, in which the aerosol-forming material is only heated but not burnt. In this regard, the number and amount of harmful substances in the aerosol is reduced.
  • a smoking article also consists of at least two, more often, however, of more, in particular of four segments.
  • One segment contains the aerosol-forming material, which typically comprises tobacco, reconstituted tobacco or tobacco prepared by other processes. Further segments in the smoking article which are optional to a certain extent serve to transfer the aerosol, to cool the aerosol or to filter the aerosol.
  • the segments are usually wrapped by a wrapping material. Very often, paper is used as a wrapping material.
  • segment should be understood to mean the segment of a smoking article that does not contain the aerosol-forming material, but, for example, serves to transfer, cool or filter the aerosol. From the prior art it is known to produce such segments from non-natural polymers such as cellulose acetate or polylactic acids. After consumption of the smoking article, the smoking article has to be disposed of properly. In many cases, however, the consumer simply drops the consumed smoking article in the environment, and attempts to restrict this behavior by information or fines had little success.
  • a segment in a smoking article has to fulfill various requirements.
  • a first requirement is to filter the aerosol. Often, this filtration is selective, which means that certain substances are removed from the aerosol and thus it influences the taste of the aerosol. With respect to filtration, one would like to have segments that have a particularly high filtration efficiency, for example if they primarily serve filtration, as well as such that have a low filtration efficiency, for example if they are primarily intended to transfer or cool the aerosol.
  • a further requirement is to provide a certain draw resistance.
  • a certain resistance i.e. a certain pressure difference, in order to draw aerosol from the smoking article.
  • the segments for smoking articles are thus often designed such that they have a certain draw resistance.
  • a further requirement is to cool the aerosol.
  • the aerosol Immediately after its formation, the aerosol has a temperature of several 100° C. and has to be cooled to a temperature acceptable for the consumer while it is flowing through the smoking article. According to the prior art, this is typically achieved by conducting heat from the aerosol.
  • a further requirement is to provide sufficient mechanical stability to the smoking article.
  • the consumer should not be able to compress the smoking article accidentally during normal consumption of the smoking article; thus, the segments need to have a certain hardness. This is also achieved in part by the selection of a suitable wrapping material.
  • Fiber-based web materials for segments in smoking articles are suitable to fulfill at least the requirement with respect to the biodegradability.
  • Fiber-based web materials describes all web-shaped materials from staple fibers that can be formed into segments for smoking articles.
  • Suitable fiber-based web materials are in particular paper or nonwovens.
  • web material is understood to mean 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 segments manufactured therefrom allow the various additional requirements to be satisfied in a particularly advantageous manner.
  • the segment according to the invention comprises a wrapping material and a web material, which is wrapped by the wrapping material.
  • the web material comprises at least 40% pulp fibers and less than 10% non-natural polymers, wherein the percentages refer to the mass of the web 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 manufactured from the web material has a density of at least 50 kg/m 3 and at most 300 kg/m 3 without the wrapping material.
  • the draw resistance, the filtration efficiency and the cooling effect of the segment are determined by the structure and the amount of the web material in the segment.
  • a porous structure of the web material increases the heat transfer and the filtration efficiency.
  • the amount of web material in the segment is also important. It is specified on the one hand by the area of the web material in the segment per volume of the segment, wherein a higher area per volume increases draw resistance, filtration efficiency and heat transfer, and on the other hand by the density of the segment without the wrapping material, wherein a higher density primarily increases the draw resistance.
  • the densities of the web material and the segment are also important, because they determine the conduction of the heat.
  • the inventors have found that within the aforementioned limits for the basis weight of the web material, the thickness of the web material, the density of the web material, the area of the web material per volume in the segment and the density of the segment without the wrapping material, a particularly good combination of properties can be achieved if the aforementioned inequality is satisfied for the parameter calculated from the density of the web material, the density of the segment without wrapping material and the area of the web material per volume of the segment.
  • the web material in the segment of the smoking article comprises pulp fibers, wherein at least 40% of the mass of the web material is formed by pulp fibers.
  • Pulp fibers consist of natural polymers and are capable of biodegrading well, whence a first advantage of the invention.
  • a further advantage that is essential to the invention results from the fact that pulp fibers are hygroscopic.
  • the aerosol in the smoking article contains water and the pulp fibers can absorb part of this water and thus contribute to cooling of the aerosol. In this regard, in contrast to segments from other materials, heat is no longer transferred, but a part of the water in the aerosol together with the heat energy contained in the water is retained. Thus, an aerosol reaches the consumer of the smoking article which is at a temperature that is not necessarily substantially reduced, but which contains substantially less heat energy and is thus more acceptable for the consumer.
  • the content of pulp fibers in the web material is therefore higher and is preferably at least 60%, particularly preferably at least 90% and highly particularly preferably at least 99%, respectively with respect to the mass of the web material.
  • the pulp fibers can be wood pulp fibers from deciduous trees or coniferous trees, but also from other plants such as hemp, flax, sisal, jute, abaca or esparto grass and are manufactured according to processes known in the art. Mixtures of pulp fibers of different origins can also be used.
  • the web material should contain less than 10% of its mass of non-natural polymers.
  • Natural polymers in this regard are polymers that are sourced directly from natural raw materials without a chemical modification or a modification of the composition or that are chemically identical to such polymers sourced from nature.
  • pulp fibers consist of natural polymers, and also fibers from regenerated cellulose belong to the natural polymers.
  • chemical modifications have taken place, so that they do not belong to natural polymers and, even though the raw materials exist in nature, these raw materials have at least been modified such that fast biodegradation is no longer ensured.
  • all polymers sourced from mineral oils, such as polyethylene, polypropylene, polyester or polystyrene are non-natural polymers.
  • the web material contains less than 5% of the mass of the web material of non-natural polymers, and particularly preferably less than 1% of the mass of the web material.
  • An optimal biodegradability is achieved when the web material contains no non-natural polymers, for which reason this is a highly particularly preferred embodiment.
  • the web material can contain fibers from regenerated cellulose, such as viscose fibers, modal fibers, Lyocell® or Tencel®, wherein their content 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 fibers from regenerated cellulose can be selected to further optimize the filtration efficiency.
  • the web material can contain filler materials, wherein the filler materials are preferably formed by calcium carbonate, magnesium oxide, magnesium hydroxide, aluminum hydroxide, titanium dioxide and silicates or mixtures thereof.
  • a particularly preferred filler material is precipitated calcium carbonate.
  • the content of filler materials with respect to the mass of the web material is preferably at least 0%, particularly preferably at least 5% and highly particularly preferably at least 10% and preferably at most 40%, particularly preferably at most 35% and highly particularly preferably at most 30%. Because filler materials absorb substantially less water than the pulp fibers, an increase in the content of filler materials for the same basis weight of the web material can contribute to a reduction of the filtration efficiency for water. In this manner, the cooling effect of the segment can be influenced.
  • the web material can also be coated.
  • the web material is coated with polyvinyl alcohol or a polysaccharide, whereupon the filtration efficiency for water is reduced and the aerosol is thus dried less.
  • the polysaccharide is selected from the group consisting of starch, carboxymethylcellulose, 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.
  • the applied composition does not only remain on the surface, but essentially penetrates 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 serves as a humectant in the aerosol-forming material of the smoking article and enhances the formation of the aerosol.
  • the web material can also contain flavors to adjust the taste of the aerosol.
  • the flavors can be contained in the web material in chemically bound form or in physically bound form, for example, encapsulated.
  • the flavors are selected from the group consisting of menthol, ethyl vanillin glucoside, vanillin and ethyl vanillin.
  • the skilled person can select further components of the web material, such as sizing agents, for example AKD, ASA or resins, or further additives and process aids according to his experience, wherein it should be noted that the amount of non-natural polymers has to be less than 10% of the mass of the web material.
  • sizing agents for example AKD, ASA or resins
  • further additives and process aids according to his experience, wherein it should be noted that the amount of non-natural polymers has to 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 in accordance with ISO 536:2012.
  • the selection of the basis weight influences the processability of the web material, in particular the process of crimping or folding, and the amount of material for the segment.
  • the preferred ranges combine the amount of material with the resulting segment properties 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 thickness of the web material is of importance for the processability and in the case of the desired properties of the segment, the preferred ranges result in a thickness that is particularly well suited for crimping or folding.
  • the thickness can be determined in accordance with ISO 534:2011.
  • the basis weight and the thickness together influence, via the density, the properties of the segment manufactured from the web material.
  • the density of the web material is preferably between 100 kg/m 3 and 1200 kg/m 3 , particularly preferably between 200 kg/m 3 and 700 kg/m 3 and highly particularly preferably between 300 kg/m 3 and 600 kg/m 3 .
  • the density describes the porous structure of the web material and thus a quantity that is essential for the filtration efficiency, the heat transfer and the draw resistance. The preferred ranges allow for a good combination of draw resistance and filtration efficiency.
  • the density can be determined in accordance with ISO 534:2011.
  • the segment contains between 20 cm 2 and 90 cm 2 web material per cm 3 volume of the segment, preferably between 30 cm 2 /cm 3 and 80 cm 2 /cm 3 and particularly preferably between 35 cm 2 /cm 3 and 70 cm 2 /cm 3 , respectively with respect 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 thus has effects on the draw resistance, but also on the filtration properties, the heat transfer and the hardness of the segment.
  • the area of the web material can be determined, for example, by weighing the web material and calculation from the nominal or measured basis weight of the web material.
  • the density of the segment itself, without the wrapping 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 3 .
  • This parameter also has essential effects on the draw resistance, the filtration efficiency and the hardness of the segment.
  • the density of the segment is indicated without the wrapping material, because the wrapping material has little influence on the draw resistance, the filtration efficiency or the heat transfer.
  • the determination of the density of the segment can be by calculation. In this regard, firstly, the volume of the segment is determined, which, for example, can be calculated from the diameter and the length for a cylindrical segment. The influence of the wrapping material on the diameter can be ignored.
  • the mass of the segment can be determined by weighing, wherein the segment is wrapped with 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. As an example, for a typical cylindrical segment, the area of the wrapping material results from the circumference of the segment and the overlap of the wrapping material with itself as well as from the length of the segment.
  • the mass of the wrapping material is subtracted from the mass of the segment with wrapping material and its density is calculated by division by the volume of the segment.
  • a numerical example is carried out in detail further below.
  • the density of the web material As the density of the web material, the density of the segment without wrapping material and the area of the web material in the segment per volume of the segment all have an influence on the draw resistance, the filtration efficiency and the heat transfer of the segment, and thereby interact in a complex manner, the inventors have found that only a specific combination of these properties can properly satisfy the requirements for a segment. It was found that a parameter Z calculated from these properties is relevant therefor, which is calculated by
  • ⁇ Web is the density of the web material in kg/m 3
  • ⁇ seg is the density of the segment without wrapping material in kg/m 3 .
  • a Web is the area of the web material per volume of the segment in cm 2 /cm 3 .
  • This parameter Z should be at least 1300 and at most 2800, preferably at least 1350 and at most 2600 and particularly preferably at least 1400 and at most 2400. Only in this manner is a segment obtained with favorable properties and only in the preferred ranges is a particularly favorable compromise of draw resistance and filtration efficiency obtained.
  • the wrapping material of the segment is preferably a paper and particularly preferably a paper with a basis weight of at least 20 g/m 2 and at most 150 g/m 2 and particularly 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.
  • wrapping materials with a basis weight of 50 g/m 2 to 150 g/m 2 can further improve the hardness of the segment.
  • the basis weight must not be too high, because otherwise, the restoring forces of the wrapping material make the manufacture of the segment, in particular gluing of the wrapping material with itself, more difficult.
  • the bending stiffness of the wrapping material can be equally as important as the basis weight in order to obtain a favorable hardness of the segment.
  • the bending stiffness should thus preferably be at least 0.05 Nmm and at most 0.90 Nmm, particularly preferably at least 0.10 Nmm and at most 0.80 Nmm.
  • the bending stiffness can be determined in accordance with ISO 5628:2012, particularly in accordance with the two-point method described in this standard.
  • the bending stiffness can depend on the direction, in which the sample is taken from the web material. The features defined by the aforementioned preferred and particularly preferred ranges are obtained when the bending stiffness in at least one direction lies in the defined preferred or particularly preferred ranges.
  • 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 of 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 highly particularly preferably at least 10 mm and at most 28 mm.
  • the segment according to the invention can be a component 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 a segment according to the invention and a further segment which contains 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, which during intended use of the smoking article is only heated but not burnt, and which contains at least one segment according to the invention and a filter segment, wherein the at least one segment according to the invention is arranged between the aerosol-forming material and the filter segment.
  • the at least one segment according to the invention primarily serves to cool the aerosol.
  • the segment according to the invention can be manufactured in accordance with processes which are known in the art. Such processes typically comprise crimping or folding the web material, the manufacture of a continuous rod from the web material, wrapping the continuous rod with a wrapping material and cutting the wrapped rod into segments of the desired size.
  • Smoking articles using the segment according to the invention can also be manufactured in accordance with processes in the art.
  • FIG. 1 shows a table (Table 1), in which the compositions of 25 web materials are summarized.
  • FIG. 2 shows a table (Table 2), in which characteristic properties of the web materials (width, basis weight, thickness, density) of the 25 web materials of Table 1 are summarized.
  • FIG. 3 shows a table (Table 3), in which characteristic properties (mass, density, area, parameter Z) of 25 segments, which were manufactured from the web materials of Tables 1 and 2, are summarized.
  • FIG. 4 shows a table (Table 4), in which functional properties of the segments of Table 3 (draw resistance, filtration efficiency for nicotine, water and glycerol) are summarized.
  • Different fiber-based web materials were manufactured according to processes known in the art and reels with a width of 175 mm to 315 mm were cut.
  • the reels of the web materials were crimped and of each a continuous rod was manufactured and wrapped with a wrapping material with a basis weight of 78 g/m 2 .
  • the rod with the wrapping material had a diameter of 7.85 mm, wherein the wrapping material had a width of 27 mm and thus overlapped by about 2.3 mm for gluing to itself.
  • composition of the web materials is given in Table 1. All of the web materials were manufactured from wood pulp; for the two web materials No. 22 and 23 Lyocell® fibers were also used, wherein the indicated percentage of 40% is with respect to the mass of Lyocell® fibers in the total fiber mass in the web material.
  • the web materials 4 - 6 , 12 and 13 also contained 29.5% of their mass of precipitated calcium carbonate (CaCO 3 ).
  • Web materials 16 - 21 , 24 and 25 were coated with an oxidized starch and the web materials 14 , 15 , 18 and 19 were impregnated with glycerol.
  • the web materials 20 and 21 were impregnated with propylene glycol.
  • the basis weight of the web materials was determined in accordance with ISO 536:2012 and the thickness and the density were determined in accordance with ISO 534:2011. The results are given in Table 2, wherein the numbers of the web materials correspond to those of Table 1.
  • the rods manufactured from the web materials were cut into rods each with a length of 108 mm and their mass was determined by weighing.
  • the data for the rods manufactured from the web materials 1 - 25 are given in Table 3, wherein again, the numbers of the web materials correspond to those of Table 1.
  • the mass in Table 3 in this regard is the mass of a 108 mm long rod with a wrapping material with a basis weight of 78 g/m 2 .
  • the density was calculated as follows from the mass of the rod and the known geometry.
  • the mass of the wrapping material which was 27 mm wide and 108 mm long, was
  • the volume of the rod was calculated from the known geometry, thus
  • the thickness of the wrapping material was ignored.
  • the mass of the wrapping material was subtracted from the mass of the rod with wrapping material and the result was divided by the volume.
  • the density of the rod manufactured from web material 1 was
  • the parameter Z is also shown in Table 3, which is calculated from
  • ⁇ Web is the density of the web material in kg/m 3
  • ⁇ Seg is the density of the segment without wrapping material in kg/m 3 .
  • a Web is the area of the web material per volume of the segment in cm 2 /cm 3 .
  • the parameter Z is independent of the geometry, in particular the diameter and the length of the rod or the segment, and characterizes only the inner structure of the segment.
  • the draw resistance of the 108 mm long rods was measured in accordance with ISO 6565. Segments with a length of 18 mm were cut from the rods, and smoking articles manufactured therefrom.
  • the smoking article was a so-called heated tobacco product, in which the tobacco contained in the smoking article is only heated.
  • the smoking article consisted of a segment with the tobacco followed in the flow direction by a transfer segment, in which the aerosol can condense, and further followed by the segment according to the invention, which here primarily serves to cool the aerosol, and finally by a filter segment.
  • the smoking article was heated in a commercially available heating device and smoked in accordance with the method given in ISO 3308.
  • the filtration efficiency for nicotine, water and glycerol was measured for the segments manufactured from the web materials 8 - 25 .
  • the filtration efficiency is the difference between the amount of substance flowing into the segment and the amount of substance flowing out of the segment, with respect to the amount of substance flowing into the segment.
  • the filtration efficiency is expressed as a percentage and was determined by this method for nicotine, water and glycerol for an 18 mm long segment.
  • the segments manufactured from the web materials 1 - 25 are segments according to the invention, which have a parameter Z of about 1300 to about 2250.
  • the draw resistance of the 108 mm long rod is between 17.9 mmWG and 63.9 mmWG and enables the design of segments, which either transfer the aerosol and only have a low draw resistance or which filter the aerosol and additionally allow the draw resistance to be increased.
  • a comparison of the web materials 2 and 11 which are identical with respect to their composition, show the influence of the density of the segment on the draw resistance.
  • a segment from web material 2 with a density of the segment of 73.3 kg/m 3 provides a draw resistance (108 mm) of 23.8 mmWG, while a segment manufactured from web material 11 with a density of 170.5 kg/m 3 has a draw resistance (108 mm) of 54.5 mmWG.
  • the draw resistance is not solely determined by the density of the segment.
  • the web materials 6 and 7 have similar basis weights, wherein web material 6 , however, contains 29.5% calcium carbonate and thus has a substantially higher density.
  • the segments manufactured therefrom have similar densities and also the area of the web material per volume of the segment is similar. Nevertheless, they differ substantially in draw resistance, which is 63.9 mmWG for the rod (108 mm) manufactured from web material 6 and 30.5 mmWG for the rod (108 mm) manufactured from web material 7 . This shows that the density of the web material itself has an independent effect on the properties of the segment manufactured therefrom and thus also constitutes an essential component of the parameter Z.
  • the 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 wrapping material, and thus is also an essential property of the draw resistance and therefore is also a component of the parameter Z.
  • the segments of the web materials 16 - 21 coated with starch all exhibit a lower filtration efficiency for water than the segments from the comparable web materials 8 , 9 and 11 , while they hardly differ in the filtration efficiencies for nicotine and glycerol. This therefore shows that a coating with oxidized starch can be used to adjust the filtration efficiency for water.
  • Impregnation of the web materials 18 - 21 with glycerol or propylene glycol results in a substantially higher filtration efficiency for nicotine and glycerol in the segments manufactured therefrom compared with the segments from the web materials 16 and 17 , which do not have such an impregnation.
  • the filtration efficiency for nicotine and glycerol can be adjusted by the impregnation.
  • all segments manufactured from the web materials 1 - 25 are useful as segments in a smoking article and can serve for cooling the aerosol as well as for filtration of the aerosol.
  • the biodegradability of all segments manufactured from the web materials 1 - 25 resulted directly from the components used and was not tested further. It was shown that with the segments according to the invention, favorable properties for use in smoking articles can be obtained and additionally, excellent biodegradability can be achieved.
  • a segment with a density without wrapping material of 90.4 kg/m 3 and an area of the web material per volume of the segment of 36.9 cm 2 /cm 3 was manufactured from web material 7 .
  • the 108 mm long rod from this web material had a draw resistance of just 12.3 mmWG, which is too low for application in smoking articles.
  • the hardness of the segment despite the wrapping material with 78 g/m 2 is not sufficient for further processing into a smoking article. It should be noted that this segment satisfied all of the requirements according to the invention, with the exception of those related to parameter Z.
  • a segment with a density without the wrapping material of 233.9 kg/m 2 and an area of the web material per volume of the segment of 89.9 cm 2 /cm 3 was manufactured from web material 12 .
  • the parameter Z for this segment was
  • the two comparative examples not according to the invention thus show that the parameter Z is essential for obtaining 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)
  • Biological Depolymerization Polymers (AREA)
  • Nonwoven Fabrics (AREA)
US16/651,208 2019-01-04 2019-10-08 Biodegradable Segment of a Smoking Article Abandoned US20210195939A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019100112.9A DE102019100112B4 (de) 2019-01-04 2019-01-04 Biologisch abbaubares Segment eines Rauchartikels
DE102019100112.9 2019-01-04
PCT/EP2019/077231 WO2020141027A1 (de) 2019-01-04 2019-10-08 Biologisch abbaubares segment eines rauchartikels

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EP (2) EP3970521B1 (de)
JP (1) JP7035173B2 (de)
KR (1) KR102369738B1 (de)
CN (1) CN111655052B (de)
BR (1) BR112020005387A2 (de)
DE (1) DE102019100112B4 (de)
ES (2) ES2923499T3 (de)
PH (1) PH12020500534A1 (de)
PL (1) PL3700366T3 (de)
WO (1) WO2020141027A1 (de)

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WO2023161411A1 (en) 2022-02-25 2023-08-31 Jt International S.A. An aerosol generating article comprising impregnated charcoal paper filter and a flavoring capsule

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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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DE4109603A1 (de) * 1991-03-23 1992-09-24 Hauni Werke Koerber & Co Kg Verfahren und vorrichtung zum herstellen von filterstaeben fuer zigaretten
JP4361850B2 (ja) 2004-09-16 2009-11-11 日本たばこ産業株式会社 シガレット用フィルター
US8402978B2 (en) * 2009-10-09 2013-03-26 Philip Morris Usa Inc. Coated impregnated porous filter plug
MY163444A (en) * 2010-03-26 2017-09-15 Philip Morris Products Sa Smoking article with heat resistant sheet material
MX2014015903A (es) * 2012-07-13 2015-12-15 Philip Morris Products Sa Filtro degradable para articulos para fumar.
RU2672657C2 (ru) 2013-03-15 2018-11-16 Филип Моррис Продактс С.А. Курительное изделие с элементом для направления потока воздуха, содержащим средство, модифицирующее аэрозоль
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WO2015178995A1 (en) * 2014-05-23 2015-11-26 Greenbutts Llc Biodegradable cigarette filter tow and method of manufacture
EP3075266A1 (de) 2015-04-02 2016-10-05 PT. Gudang Garam Tbk. Verfahren zur herstellung eines aerosolbildenden artikels mit rekonstituiertem tabakmaterial, aerosolbildender artikel mit dem rekonstituierten tabakmaterial und verwendung eines aerosolbildenden artikels mit rekonstituiertem tabakmaterial
DE102016105235B4 (de) 2016-03-21 2019-02-14 Delfortgroup Ag Verbessertes Filterpapier für Zigarettenfilter, dessen Herstellung und Filterzigarette

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023161411A1 (en) 2022-02-25 2023-08-31 Jt International S.A. An aerosol generating article comprising impregnated charcoal paper filter and a flavoring capsule

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CN111655052B (zh) 2022-06-07
DE102019100112A1 (de) 2020-07-09
PH12020500534A1 (en) 2020-07-20
JP2021511778A (ja) 2021-05-13
EP3970521A3 (de) 2022-03-30
ES2973035T3 (es) 2024-06-18
EP3700366B1 (de) 2022-04-20
EP3970521B1 (de) 2023-12-06
JP7035173B2 (ja) 2022-03-14
PL3700366T3 (pl) 2022-08-08
DE102019100112B4 (de) 2020-09-10
BR112020005387A2 (pt) 2021-08-03
EP3970521A2 (de) 2022-03-23
KR20200086255A (ko) 2020-07-16
EP3700366A1 (de) 2020-09-02
ES2923499T3 (es) 2022-09-28
CN111655052A (zh) 2020-09-11
WO2020141027A1 (de) 2020-07-09

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