EP4064883B1 - Matériau filtrant structuré pour produits de délivrance de nicotine - Google Patents

Matériau filtrant structuré pour produits de délivrance de nicotine Download PDF

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Publication number
EP4064883B1
EP4064883B1 EP22706576.0A EP22706576A EP4064883B1 EP 4064883 B1 EP4064883 B1 EP 4064883B1 EP 22706576 A EP22706576 A EP 22706576A EP 4064883 B1 EP4064883 B1 EP 4064883B1
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EP
European Patent Office
Prior art keywords
filter material
fiber web
segment
fibers
filter
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EP22706576.0A
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German (de)
English (en)
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EP4064883A1 (fr
Inventor
Stefan Bachmann
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Delfortgroup AG
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Delfortgroup AG
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B13/00—Tobacco for pipes, for cigars, e.g. cigar inserts, or for cigarettes; Chewing tobacco; Snuff
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF 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 OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF 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 OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • A24D3/0212—Applying additives to filter materials
    • A24D3/022—Applying additives to filter materials with liquid additives, e.g. application of plasticisers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0229—Filter rod forming processes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of 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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of 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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of 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 OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of 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 OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/17—Filters specially adapted for simulated smoking devices
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
    • D04H1/26—Wood pulp
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D04H1/4258—Regenerated cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/013—Regenerated cellulose series
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/04—Filters

Definitions

  • the invention relates to a filter material for a nicotine delivery product, a segment made therefrom for a smoking article or an oral nicotine delivery product made therefrom, wherein the filter material has a structure that gives a nicotine delivery product made therefrom favorable properties, for example with regard to hardness, draw resistance, filtration efficiency, appearance or biodegradability.
  • the structure of the filter material is characterized by its transparency.
  • Nicotine delivery products can be smoking articles.
  • 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 contains a material that 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 which is designed as a filter and serves to filter the aerosol.
  • the aerosol is generated by burning the aerosol-forming material, and the filter primarily serves to filter the aerosol and provide the filter cigarette with a defined draw resistance.
  • the smoking article can also be a so-called tobacco heater, in which the aerosol-forming material is only heated but not burned. This reduces the number and quantity of harmful substances in the aerosol.
  • a smoking article also consists of at least two, but more often of more, in particular four segments.
  • One segment contains the aerosol-forming material, which typically includes tobacco, reconstituted tobacco, tobacco prepared using other methods or nicotine and glycerol or propylene glycol.
  • Other, sometimes optional segments in the tobacco heater serve to pass the aerosol on, cool the aerosol or filter the aerosol.
  • the segments are usually wrapped in a wrapping material. Paper is often used as the wrapping material.
  • segment is understood to mean the segment of a smoking article that does not contain the aerosol-forming material, but serves, for example, to pass on, cool or filter the aerosol.
  • paper filter segments have not yet become widespread is their visual appearance.
  • the cut surface of the segment at the mouth end of the smoking article is often visible, and consumers are used to a white, homogeneous surface from the usual cellulose acetate segments, where the individual cut fibers are barely visible.
  • Paper segments on the other hand, have a coarse structure, which obviously gives consumers the impression of lower quality. Paper segments are therefore often only used as a partial segment in a filter consisting of several segments, so that the consumer cannot see the cut surface.
  • the segment at the mouth end is then often still made of cellulose acetate. Because of these visual defects, the advantages of the biodegradability of a paper segment cannot be fully utilized.
  • the nicotine delivery product can also be an oral nicotine delivery product.
  • Oral nicotine delivery products are typically small containers made of nonwoven fabric that contain a nicotine-containing material, such as tobacco. When used, the consumer keeps the container in the mouth for some time, whereby substances, particularly nicotine, can be released from the nicotine-containing material.
  • the fleeces forming the container mostly contain plastics and are therefore not biodegradable.
  • Examples of oral nicotine delivery products are products packaged in containers ( pouches ) such as Swedish snus, white snus or other smokeless tobacco products. Oral nicotine delivery products without tobacco are also known.
  • US 2015/0374030 A1 discloses a biodegradable cigarette filter containing a mixture of at least two or more natural materials selected from the group consisting of hemp fibers, flax fibers, abaca fibers or pulp, sisal fibers or pulp, wood pulp and cotton fibers or cotton flakes.
  • the mixture may also contain regenerated cellulose fibers.
  • the mixture may contain a natural binder or be hydroentangled.
  • US$5,738,119 shows a cigarette filter comprising hydroentangled lyocell staple fibers. High filter efficiencies, good flavor, good taste characteristics, good resistance to soiling, good physical elasticity and good airflow characteristics are observed when cigarettes are smoked with such filters.
  • CN110616505A relates to an acetate fiber nonwoven composite material suitable for cigarette filters and a method for producing the acetate fiber nonwoven composite material.
  • the acetate fiber nonwoven composite material is produced by mixing acetate fiber and other fibers, wherein the other fibers are polylactate fiber, metal fiber and/or carbon fiber.
  • the composite acetate fiber nonwoven material comprises 5-99 wt% of cellulose acetate fiber and 1-95 wt% of non-acetate fiber material.
  • the acetate fiber nonwoven has a certain heat absorption effect and filtering performance, and can reduce the smoke temperature and filter harmful components in the smoke. After the fibers are mixed, the tensile strength of the nonwoven fabric is increased, and the strength requirements of the cigarette filters made with the nonwoven fabric can be met.
  • the invention is based on the object of providing a filter material for a smoking article which allows segments to be manufactured therefrom which are as close as possible to conventional segments made of cellulose acetate in terms of hardness, draw resistance, filtration efficiency and appearance, but which are also readily biodegradable.
  • a further object of the invention is to provide a filter material from which oral nicotine delivery products can be manufactured which have better biodegradability.
  • a filter material wherein the filter material is water-jet-entangled and contains at least 50% and at most 100% cellulose fibers, in each case based on the mass of the filter material, and wherein the filter material has a basis weight of at least 25 g/m 2 and at most 60 g/m 2 and wherein the filter material has a structure which is characterized in that it imparts to the filter material a transparency which, measured according to DIN 53147:1993-01, is at least 45% and at most 70%.
  • the filter material is produced by hydroentanglement.
  • This production process gives the filter material characteristic properties that distinguish it from other filter materials and in particular from paper and cannot be achieved in an identical manner by other production processes.
  • the strength of the hydroentanglement filter material is achieved by the swirling of the fibers and as a result the fibers are also aligned to a significant extent in the thickness direction of the filter material.
  • This arrangement of the fibers is, among other things, essential for a segment made from it to have favorable properties in terms of tensile resistance, filtration efficiency and hardness.
  • segments made of hydroentangled filter materials according to the composition of the invention generally have better properties than segments made of paper, but that there is still potential to improve these properties to further optimize and to adapt even better to those of the segments made of cellulose acetate. Similar to segments made of paper, but to a lesser extent, there is a problem that only a small amount of filter material can be used to achieve good filtration efficiency, and therefore the tensile resistance and in particular the hardness of the segment do not fully meet the expectations of the consumer. According to the inventors' findings, a special structure of the filter material makes it possible to solve this problem.
  • the filter material does not have an approximately homogeneous surface like a sheet of paper or a plastic film, but rather a large number of irregularities in thickness or basis weight distributed over the entire surface.
  • irregularities can be, for example, holes or thinner areas that are regularly or irregularly arranged on the filter material.
  • the holes or thinner areas are not created by removing material, but wholly or partially by redistributing and changing the arrangement of the fibers in the filter material. This can be done by an inventive manufacturing process explained below.
  • the precise shape and arrangement of the irregularities is not important; they only have to be distributed almost evenly over the surface and exceed a certain size.
  • the inventors considered various parameters, such as thickness, weight per unit area or air permeability. However, it has been shown that these parameters cannot be measured with a sufficiently low local resolution to capture the irregularities.
  • the inventors have recognized that the transparency of the filter material changes due to the redistribution of the fibers.
  • the special structure that characterizes the filter material according to the invention gives the filter material a characteristic, increased transparency that distinguishes the filter material from filter materials with the same basis weight and similar composition but conventional structure.
  • transparency is a suitable, clearly measurable value that can be used to characterize the desired structure of the filter material.
  • the cellulose fibers are necessary to provide the filter material with sufficient strength so that it can be processed into a segment.
  • the proportion of cellulose fibers in the filter material is at least 50% and at most 100% of the mass of the filter material, but preferably at least 60% and at most 100% and particularly preferably at least 70% and at most 95%, in each case based on the mass of the filter material.
  • the cellulose fibres can be pulp fibres or regenerated cellulose fibres or mixtures thereof.
  • the cellulose fibers are preferably obtained from coniferous wood, hardwood or other plants such as hemp, flax, jute, ramie, kenaf, kapok, coconut, abaca, sisal, bamboo, cotton or esparto grass. Mixtures of cellulose fibers from different sources can also be used to produce the water jet-entangled filter material.
  • the cellulose fibers are particularly preferably obtained from coniferous wood because such fibers give the filter material good strength even in small quantities.
  • the filter material according to the invention can contain fibers made from regenerated cellulose.
  • the proportion of fibers made from regenerated cellulose is preferably at least 5% and at most 50%, particularly preferably at least 10% and at most 45% and very particularly preferably at least 15% and at most 40%, in each case based on the mass of the filter material.
  • the fibers made from regenerated cellulose are preferably viscose fibers, modal fibers, Lyocell ® , Tencel ® or mixtures thereof. These fibers have good biodegradability and can be used to optimize the strength of the filter material and to adjust the filtration efficiency of the segment made from them for the smoking article. Due to their manufacturing process, they are less variable than the cellulose fibers obtained from natural sources and help to ensure that the properties of a segment made from the filter material vary less than if cellulose fibers alone are used.
  • the basis weight of the filter material is at least 25 g/m 2 and at most 60 g/m 2 , preferably at least 28 g/m 2 and at most 55 g/m 2 and particularly preferably at least 30 g/m 2 and at most 55 g/m 2 .
  • the basis weight influences the tensile strength of the filter material, whereby a higher basis weight can lead to greater strength.
  • the information refers to a basis weight measured according to ISO 536:2012.
  • the transparency of the filter material measured according to DIN 53147:1993-01 is at least 45% and at most 70%, preferably at least 50% and at most 66%. From a transparency of at least 45%, caused by the redistribution of the fibers, positive effects are seen in terms of hardness and tensile strength of a segment made from the filter material. However, the transparency should not be too high because then the thin spots and holes predominate to such an extent that the strength of the filter material is no longer suitable for producing segments from it.
  • each individual irregularity must of course be much smaller than the area of the filter material required to produce the segment.
  • the special structure of the filter material is also formed by holes, the area of a large proportion of the holes, for example more than 90% of the holes, is preferably less than 10 mm 2 .
  • transparency is particularly suitable as a parameter characterizing the structure of the filter material, because the measuring area when measuring transparency according to DIN 53147:1993-01 is approximately 2.5 cm 2 and thus holes or thin spots as well as the surrounding areas are generally recorded representatively. Examples of embodiments that illustrate these irregularities are shown in Fig.2 and explained below. However, the invention is not limited to irregularities of the Fig.2 represented geometry.
  • the filter material according to the invention can contain additives such as alkyl ketene dimers (AKD), alkenyl succinic anhydrides (ASA), fatty acids, starch, starch derivatives, carboxymethyl cellulose, alginates, wet strength agents or substances for adjusting the pH value, such as organic or inorganic acids or alkalis for adjusting specific properties.
  • additives such as alkyl ketene dimers (AKD), alkenyl succinic anhydrides (ASA), fatty acids, starch, starch derivatives, carboxymethyl cellulose, alginates, wet strength agents or substances for adjusting the pH value, such as organic or inorganic acids or alkalis for adjusting specific properties.
  • the filter material according to the invention can also contain one or more burn salts as additives, which are selected from the group consisting of citrates, malates, tartrates, acetates, nitrates, succinates, fumarates, gluconates, glycolates, Lactates, oxylates, salicylates, ⁇ -hydroxycaprylates, phosphates, polyphosphates, chlorides and hydrogen carbonates, and mixtures thereof and particularly preferably from the group consisting of trisodium citrate, tripotassium citrate and mixtures thereof.
  • burn salts are selected from the group consisting of citrates, malates, tartrates, acetates, nitrates, succinates, fumarates, gluconates, glycolates, Lactates, oxylates, salicylates, ⁇ -hydroxycaprylates, phosphates, polyphosphates, chlorides and hydrogen carbonates, and mixtures thereof and particularly preferably from the group consisting of trisodium citrate,
  • the expert is able to determine the type and quantity of such additives based on his experience.
  • the filter material according to the invention can also comprise other substances which better adapt the filtration efficiency of the filter material to that of cellulose acetate.
  • the filter material comprises a substance selected from the group consisting of triacetin, propylene glycol, sorbitol, glycerol, polyethylene glycol, polypropylene glycol, polyvinyl alcohol and triethyl citrate or mixtures thereof.
  • the thickness of the filter material is at least 70 ⁇ m and at most 1000 ⁇ m, preferably at least 100 ⁇ m and at most 800 ⁇ m and particularly preferably at least 150 ⁇ m and at most 750 ⁇ m.
  • the thickness influences the amount of filter material that can be packed into the segment of the smoking article and thus the draw resistance and filtration efficiency of the segment, but also the processability of the filter material, since it is often crimped or folded to produce a segment for a smoking article. For such process steps, too high a thickness is unfavorable and thicknesses in the preferred and particularly preferred intervals allow particularly good processability of the filter material according to the invention into a segment of a smoking article.
  • the mechanical properties of the filter material are important for processing the filter material according to the invention into a nicotine delivery product. In particular, holes or thin spots should not reduce the strength of the filter material too much.
  • the width-related tensile strength of the filter material measured according to ISO 1924-2:2008, is preferably at least 0.05 kN/m and at most 5 kN/m, particularly preferably at least 0.07 kN/m and at most 4 kN/m.
  • the breaking elongation of the filter material is important because when the filter material according to the invention is processed into a nicotine delivery product, the filter material is often stretched or loaded in the running direction and a particularly high breaking elongation is advantageous.
  • the breaking elongation of the filter material measured according to ISO 1924-2:2008, is therefore preferably at least 1% and at most 50% and particularly preferably at least 3% and at most 40%.
  • Tensile strength and elongation at break can depend on the direction in which the sample was taken from the filter material for the measurement. The above-mentioned characteristics of the filter material are met if the tensile strength or elongation at break lies in the preferred or particularly preferred intervals in at least one direction.
  • Segments for smoking articles according to the invention can be produced from the filter material according to the invention using methods known from the prior art. These methods include, for example, crimping or folding the filter material, forming an endless strand from the crimped or folded filter material, wrapping the endless strand in a wrapping material and cutting the wrapped strand into individual rods of defined length.
  • the length of such a rod is an integer multiple of the length of the segment that is then to be used in the smoking article according to the invention, and therefore the rods are then cut into segments of the desired length before or during the manufacture of the smoking article.
  • the segment for smoking articles according to the invention comprises the filter material according to the invention and a wrapping material.
  • the segment is cylindrical with a diameter of at least 3 mm and at most 10 mm, particularly preferably at least 4 mm and at most 9 mm and very particularly preferably at least 5 mm and at most 8 mm. These diameters are favorable for the use of the segments according to the invention in smoking articles.
  • the segment has a length of at least 4 mm and at most 40 mm, particularly preferably of at least 6 mm and at most 35 mm and very particularly preferably of at least 10 mm and at most 28 mm.
  • the draw resistance of the segment determines, among other things, the pressure difference that the smoker must apply when consuming the smoking article in order to generate a certain volume flow through the smoking article, and it therefore has a significant influence on the acceptance of the smoking article by the smoker.
  • the draw resistance of the segment can be measured according to ISO 6565:2015 and is given in mm water column (mmWG). To a very good approximation, the draw resistance of the segment is proportional to the length of the segment, so that the draw resistance can also be measured on rods that only differ from the segment in length. The draw resistance of the segment can then be easily calculated.
  • the tensile resistance of the segment per length of the segment is preferably at least 1 mmWG/mm and at most 12 mmWG/mm and particularly preferably at least 2 mmWG/mm and at most 10 mmWG/mm.
  • the wrapping material of the segment according to the invention is preferably a paper or a film.
  • the wrapping material of the segment according to the invention preferably has a basis weight of at least 20 g/m 2 and at most 150 g/m 2 , particularly preferably at least 30 g/m 2 and at most 130 g/m 2 .
  • a wrapping material with this preferred or particularly preferred basis weight gives the segment according to the invention wrapped therewith a particularly advantageous hardness. This means that the smoker cannot accidentally compress the segment in the smoking article.
  • Smoking articles according to the invention can be produced from the segment according to the invention by methods known in the prior art.
  • the smoking article according to the invention comprises a segment which contains an aerosol-forming material and a segment which comprises the filter material according to the invention and a wrapping material.
  • the segment of the smoking article closest to the mouth end is a segment according to the invention.
  • the smoking article is a filter cigarette and the aerosol forming material comprises tobacco.
  • the smoking article is a smoking article in which, during intended use, the aerosol-forming material is only heated but not burned, and the aerosol-forming material comprises tobacco, reconstituted tobacco, nicotine, glycerol, propylene glycol or mixtures thereof.
  • the high transparency caused by the special structure of the filter material allows for further advantages.
  • Some smoking articles are designed in such a way that the smoker can see inside the smoking article.
  • the wrapping materials are partially transparent or holes are provided that allow a direct view of the filter material. Filters known from the state of the art allow this because of their low Transparency does not allow one to see further into the filter.
  • the filter material according to the invention has a transparency of more than 50%, it is possible to see, for example, breakable capsules filled with flavorings in the filter.
  • the smoking article therefore comprises a segment that contains an aerosol-forming material and a segment that comprises the filter material according to the invention and a wrapping material, wherein the wrapping material is at least partially transparent or has holes and the filter material has a transparency measured according to DIN 53147:1993-01 of at least 50%.
  • the filter material is also suitable for oral nicotine delivery products.
  • the filter material according to the invention has good biodegradability due to its composition and, due to the special structure, which is characterized by transparency, also has good permeability for the substances dissolved from the nicotine-containing material of the oral nicotine delivery product during use, so that it is particularly suitable for nicotine delivery products.
  • An oral nicotine delivery product according to the invention therefore comprises a container which is formed by the filter material according to the invention and which contains a nicotine-containing material.
  • the filter material preferably has a transparency measured according to DIN 53147:1993-01 of at least 50% and at most 70%.
  • the nicotine-containing material may preferably be tobacco.
  • the at least one water jet directed at the fiber web in step C causes a redistribution of the fibers so that they arrange themselves around the elevations and are displaced by the elevations.
  • the elevations therefore create holes or thin spots depending on the pressure of the water jet and the amount of fiber initially present in the area of the elevation.
  • This structure gives the fiber material the characteristic increased transparency mentioned at the beginning.
  • the shape of the elevations is only imprecisely transferred to the fiber web, so that even if the elevations all have the same shape, the holes or thin spots in the fiber web and in the filter material are irregular in terms of their shape and size.
  • the increase in transparency can, however, be reliably detected.
  • Thinner spots and in particular holes could in principle also be created by embossing or punching, but in this case the fibers are compressed or cut off and not arranged differently.
  • the inventive manufacturing process described here arranges the fibers around the holes or thin spots, thus creating a net-like structure.
  • This net-like structure allows the hardness of the segment produced from a given amount of material to be higher and the tensile resistance to be lower than with a filter material with an approximately homogeneous surface or a filter material produced by embossing or punching.
  • the filter material produced by this process is said to be suitable for use in nicotine delivery products.
  • the provision of a fiber web in step A comprises spinning a plurality of cellulose fibers, wherein the cellulose fibers are formed by filaments of regenerated cellulose and wherein at least 90% of the mass of the filter material after drying in step D is formed by the filaments of regenerated cellulose.
  • the filaments of regenerated cellulose are Lyocell ® .
  • the aqueous suspension in step A1 has a solids content of at most 3.0%, particularly preferably at most 1.0%, very particularly preferably at most 0.2% and in particular at most 0.05%.
  • the particularly low solids content of the suspension makes it possible to form a fiber web with a low density in step A3, which has a favorable effect on the filtration efficiency of a segment made from it.
  • the rotating screen of steps A2 and A3 is inclined upwards in the running direction of the fiber web against the horizontal by an angle of at least 3° and at most 40°, particularly preferably by an angle of at least 5° and at most 30° and very particularly preferably by an angle of at least 15° and at most 25°.
  • the method comprises a step in which a pressure difference is generated between the two sides of the rotating sieve to assist the dewatering of the suspension in step A3, wherein particularly preferably vacuum boxes or suitably shaped wings generate the pressure difference.
  • a plurality of water jets are used to carry out the hydroentanglement in step B, wherein the water jets are arranged in at least one row transverse to the running direction of the fiber web.
  • the hydroentanglement in step B is effected by at least two water jets directed at the fiber web, wherein particularly preferably the at least two water jets act on different sides of the fiber web.
  • the fiber web is supported in step C by a cylinder on the surface of which the plurality of elevations are located.
  • the area of each elevation, projected onto the surface supporting the fibrous web in step C is at least 0.1 mm 2 and at most 15 mm 2 , more preferably at least 0.25 mm 2 and at most 10 mm 2 .
  • the method comprises a further step in which one or more additives are applied to the fiber web.
  • the additives are preferably selected from the group consisting of alkyl ketene dimers (AKD), alkenyl succinic anhydrides (ASA), fatty acids, starch, starch derivatives, carboxymethyl cellulose, alginates, wet strength agents, substances for adjusting the pH value, such as organic or inorganic acids or alkalis and mixtures thereof, or the additives are burn salts selected from the group consisting of citrates, malates, tartrates, acetates, nitrates, succinates, fumarates, gluconates, glycolates, lactates, oxylates, salicylates, ⁇ -hydroxycaprylates, phosphates, polyphosphates, chlorides and hydrogen carbonates, and mixtures thereof.
  • the application of the one additive or additives takes place between steps C and D of the method according to the invention.
  • the application of the one additive or additives takes place after step D, followed by a further step of drying the fiber web.
  • the drying in step D is at least partially effected by contact with hot air, by infrared radiation or by microwave radiation. Drying by direct contact with a heated surface is also possible, but less preferred because the thickness of the water jet-entangled filter material can decrease.
  • the filter material according to the invention can also be produced by steps A, B and D.
  • step C is omitted, so that the process is not in accordance with the invention.
  • step B a high pressure is selected for some of the water jets, so that the water jets create holes or thin spots in the fiber web supported by the supporting screen.
  • the irregularities can be much less spatially extensive, so that the filter material is only in accordance with the invention if the machine settings, for example the pressure of the water jets, are selected so that the transparency of the filter material is at least 45% and at most 70%.
  • a suspension 1 of pulp fibers and fibers of regenerated cellulose was provided in a storage container 2, step A1, and from there pumped onto a rotating sieve 3 inclined upwards relative to the horizontal, step A2, and dewatered through vacuum boxes 9, step A3, so that a fiber web 4 was formed on the sieve, the general direction of movement of which is indicated by the arrow 10.
  • the fiber web 4 was removed from the sieve 3 and transferred to a supporting sieve 5 that also rotated, step A4.
  • water jets 11 from devices 6 arranged in several rows transverse to the running direction of the fiber web 4 were directed onto the fiber web 4 in order to swirl the fibers and consolidate the fiber web 4 into a nonwoven fabric, step B.
  • step C water jets 12 were also directed onto the other side of the fiber web 4 by additional devices 7, the fiber web 4 being supported by a cylindrical roller 13 on the surface of which a plurality of elevations were provided, step C.
  • the still moist nonwoven fabric then passed through a drying device 8 and was dried there, step D, in order to obtain the filter material.
  • a mixture of softwood pulp fibers and Lyocell ® fibers was used to produce the water-jet-entangled filter material, with the fiber quantities being chosen so that the finished filter material consisted of 65% pulp fibers and 35% Lyocell ® fibers.
  • the finished filter material had a basis weight of 55 g/m 2 and a thickness of 330 ⁇ m.
  • step C of the manufacturing process a series of water jets, 12 in Fig.1 , directed towards the fiber web 4, while the fiber web 4 is guided by a roller 13 in Fig.1 , supported by a roller.
  • the roller had prismatic elevations arranged next to each other (in Fig.1 not shown) with a square base area of 1 mm ⁇ 1 mm.
  • the bumps were arranged in rows with a spacing of 1 mm between adjacent rows and between the bumps in each row.
  • Fig.2 shows the filter material of embodiment 1, designated 1, where the line 4 is about 1 cm long.
  • a mixture of softwood pulp fibers and viscose fibers was used to produce the water-jet-entangled filter material, with the fiber quantities being chosen so that the finished filter material consisted of 80% pulp fibers and 20% viscose fibers.
  • the finished filter material had a basis weight of 50 g/m 2 and a thickness of 290 ⁇ m.
  • step C of the manufacturing process a series of water jets, 12 in Fig.1 , directed at the fiber web, while the filter material is passed through a roller, 13 in Fig.1 , was supported.
  • the roller, 13 in Fig.1 was designed as in Example 1, but the pressure of the water jets, 12 in Fig.1 , was chosen higher.
  • Fig.2 shows the filter material of embodiment 2 designated 2, where the line 4 is about 1 cm long.
  • the finished filter material had a basis weight of 35 g/m 2 and a thickness of 200 ⁇ m.
  • step C was omitted and the pressure of the water jets in step B was chosen so high that thin spots and holes were created in the filter material in a very irregular arrangement.
  • Fig.2 shows the filter material of embodiment 3, designated 3, where the line 4 is about 1 cm long.
  • Example 2 To produce a filter material not according to the invention, the same mixture of fibers was used as in Example 1. However, the basis weight was chosen to be particularly low and was only 25.8 g/m 2 in the finished filter material.
  • the filter material was produced according to steps A, B and D of the method according to the invention, but the creation of a structure in step C was omitted.
  • the surface of the filter material was obviously much more homogeneous than that of the embodiments 1 to 3.
  • Fig.2 shows the filter material of the comparative example not according to the invention, designated A, wherein the line 4 is about 1 cm long.
  • Paper-wrapped filter rods with a length of 100 mm and a diameter of 7.85 mm were made from each filter material from the examples 1 to 3 and the comparison example.
  • the web width of the filter material and the machine settings for filter production were selected so that each filter rod had a similar draw resistance of 440 ⁇ 15 mmWG. Segments with a length of 20 mm were cut from the filter rods and American Blend cigarettes with a length of 83 mm without filter ventilation were made from them.
  • the average weight of the cigarettes was 932.7 mg.
  • the cigarettes were smoked according to the procedure specified in ISO 3308:2012 and the amount of nicotine-free dry condensate per cigarette was determined.
  • the filter segments of the cigarettes were removed and the amount of nicotine-free dry condensate contained in each filter segment was also determined and the filtration efficiency in percent was calculated from this, whereby the filtration efficiency expresses what proportion of the nicotine-free dry condensate in the filter segment incoming nicotine-free dry condensate is retained in the filter.
  • the filtration efficiency therefore depends not only on the properties of the filter material but also on the length and diameter of the filter segment.
  • the hardness of the filter rods was measured using a DD60A measuring device from Borgwaldt KC. Filter rods are loaded by a test specimen with a defined force for a defined time and the deformation is measured and expressed as a percentage based on the undeformed position.
  • the tensile resistance (PD) of the filter rod, the filtration efficiency (FE) for nicotine-free dry condensate and the hardness (HD) of the filter segment are given in Table 1.
  • the transparency (TR) of the filter material according to DIN 53147:1993-01 is also given in Table 1.
  • the data for a filter made of cellulose acetate are also given as comparative example B. No transparency can be measured for comparative example B because the filter material is not in the form of a fiber web.
  • Table 1 TR PD FE HD e.g. % mmWG % % 1 49.1 443 67.3 78 2 55.7 445 65.0 80 3 52.3 429 62.8 77 A 38.2 438 75.3 81 B 440 54.1 84
  • the hardness of the segments from the inventive embodiments 1 to 3 is slightly lower than that of the comparative examples A and B. However, this is of minor importance because such a small difference in hardness can also be compensated by choosing a stiffer covering material for the segment.
  • segments can be produced from the filter material according to the invention whose properties in terms of tensile resistance, filtration efficiency, hardness and appearance are overall closer to filters made of cellulose acetate than filter materials made of paper or non-inventive hydroentangled filter materials.
  • the biodegradability of the filter materials according to the invention is significantly better than that of cellulose acetate.
  • An oral nicotine delivery product in the form of a container filled with processed tobacco was produced from the filter material according to the invention from Example 2, whereby there were no differences in use compared to conventional oral nicotine delivery products.
  • the container has better biodegradability than conventional containers.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Claims (15)

  1. Matériau filtrant pour la fabrication d'un produit de libération de nicotine, dans lequel le matériau filtrant est solidifié par un jet d'eau et contient au moins 50 % et au maximum 100 % de fibres de cellulose, par rapport à la masse du matériau filtrant,
    dans lequel le matériau filtrant présente un poids surfacique d'au moins 25 g/m2 et de maximum 60 g/m2 et dans lequel le matériau filtrant présente une structure qui est caractérisée en ce qu'elle confère au matériau filtrant une transparence qui, mesurée selon DIN 53147:1993-01, est d'au moins 45 % et de maximum 70 %.
  2. Matériau filtrant selon la revendication 1, dans lequel la part de fibres de cellulose dans le matériau filtrant représente au moins 60 % et au maximum 100 % et de préférence au moins 70 % et au maximum 95 %, par rapport à la masse de matériau filtrant.
  3. Matériau filtrant selon la revendication 1 ou 2, dans lequel les fibres de cellulose sont constituées de fibres de cellulose, de fibres régénérées de cellulose ou de mélanges de celles-ci, dans lequel les fibres de cellulose sont extraites de préférence de bois de résineux, de bois de feuillus, de chanvre, de lin, de jute, de ramie, de kenaf, de kapok, de noix de coco, d'abaca, de sisal, de bambou, de coton ou d'alfa, ou sont constituées d'un mélange de fibres de cellulose de deux de ces origines ou plus et/ou
    dans lequel la part de fibres de cellulose régénérée représente de préférence au moins 5 % et au maximum 50 %, de préférence au moins 10 % et au maximum 45 % et plus particulièrement de préférence au moins 15 % et au maximum 40 %, par rapport à la masse de matériau filtrant.
  4. Matériau filtrant selon l'une des revendications précédentes, dont le poids surfacique selon ISO 536:2012 représente au moins 28 g/m2 et au maximum 55 g/m2, de préférence au moins 30 g/m2 et au maximum 55 g/m2 et/ou
    dont la transparence, mesurée selon DIN 53147:1993-01 représente au moins 50 % et au maximum 66 % et/ou
    dans lequel la structure mentionnée comprend une pluralité de trous dans le matériau filtrant, dans lequel, au moins 90 % des trous présentant une surface inférieure à 10 mm2.
  5. Matériau filtrant selon l'une des revendications précédentes, dont l'épaisseur selon ISO 534:2011 représente au moins 70 µm et au maximum 1000 µm, de préférence au moins 100 µm et au maximum 800 µm et plus particulièrement de préférence au moins 150 µm et au maximum 750 µm et/ou
    dont la résistance à la traction sur la largeur, mesurée selon ISO 1924-2:2008, dans au moins une direction, représente au moins 0,05 kN/m et au maximum 5 kN/m, de préférence au moins 0,07 kN/m et au maximum 4 kN/m et/ou
    dont l'allongement à la rupture, mesuré selon ISO 1924-2:2008 dans au moins une direction, représente au moins 1 % et au maximum 50 %, de préférence au moins 3 % et au maximum 40 %.
  6. Segment pour un produit de libération de nicotine, dans lequel le produit de libération de nicotine est un article à fumer comprenant un matériau filtrant selon l'une des revendications précédentes et en matériau d'enveloppe qui entoure le matériau filtrant.
  7. Segment selon la revendication 6, dans lequel le segment présente la forme d'un cylindre avec une surface de base circulaire, dans lequel la surface de base circulaire présente un diamètre d'au moins 3 mm et de maximum 10 mm, de préférence d'au moins 4 mm et de maximum 9 mm et plus particulièrement de préférence d'au moins 5 mm et de maximum 8 mm et/ou
    qui présente une longueur d'au moins 4 mm et de maximum 40 mm, de préférence d'au moins 6 mm et de maximum 35 mm et plus particulièrement de préférence d'au moins 10 mm et de maximum 28 mm.
  8. Segment selon l'une des revendications 6 ou 7, dont la résistance à la traction représente par unité de longueur du segment, mesurée selon ISO 6565:2015, au moins 1 mmWG/mm et au maximum 12 mmWG, de préférence au moins 2 mm/WG/mm et au maximum 10 mmWG/mm et/ou
    dans lequel le matériau d'enveloppe est un papier ou une feuille et/ou dans lequel le matériau d'enveloppe présente un poids surfacique d'au moins 20 g/m2 et de maximum 150 g/m2, de préférence au moins 30 g/m2 et de maximum 130 g/m2.
  9. Article à fumer comprenant un segment qui contient un matériau formant un aérosol et un segment selon l'une des revendications 6 à 8.
  10. Article à fumer selon la revendication 9, dans lequel le segment selon l'une des revendications 6 à 8 est le segment de l'article à fumer le plus proche de l'extrémité d'embouchure de l'article à fumer et/ou
    dans lequel l'article à fumer est une cigarette à filtre et le matériau formant un aérosol est du tabac,
    et/ou, lors d'une utilisation conforme à l'usage prévu, le matériau formant un aérosol est seulement chauffé mais pas brûlé et le matériau formant un aérosol est du tabac, du tabac reconstitué, de la nicotine, du glycérol, de propylène-glycol ou des mélanges de deux ou plus de des composants et/ou
    dans lequel le matériau d'enveloppe du segment mentionné selon l'une des revendications 6 à 8 est au moins partiellement transparent ou présente des trous et le matériau filtrant présente une transparence mesurée selon DIN 53147:1993-01, d'au moins 50 %.
  11. Produit de libération de nicotine oral comprenant un récipient qui est constitué d'un matériau filtrant selon l'une des revendications 1 à 5 et qui contient un matériau contenant de la nicotine, dans lequel le matériau filtrant présente de préférence une transparence, mesurée selon DIN 53147:1993-01, d'au moins 50 % et de maximum 70%.
  12. Procédé de fabrication d'un matériau filtrant, qui comprend les étapes A à D :
    A- mise à disposition d'une bande de fibres comprenant des fibres de cellulose,
    B- solidification par jet d'eau de la bande de fibres à l'aide d'au moins un jet d'eau
    orienté vers la bande de fibres, afin de fabriquer une bande de fibres solidifiée par jet d'eau,
    C- réalisation d'une structure dans la bande de fibres solidifiée par jet d'eau,
    D- séchage de la bande de fibres solidifiée par jet d'eau,
    dans lequel la quantité de fibres de cellulose à l'étape A est choisie de sorte que le matériau filtrant contient, après le séchage à l'étape D, au moins 50 % et au maximum 100 % de fibres de cellulose, par rapport à la masse de matériau filtrant et
    le matériau filtrant présente, après le séchage à l'étape D, un poids surfacique d'au moins 25 g/m2 et de maximum 60 g/m2 et
    le matériau filtrant présente, après le séchage à l'étape D, une structure, qui est caractérisée en ce qu'elle confère au matériau filtrant une transparence, mesurée selon DIN 53147:1993-01 d'au moins 45 % et de maximum 70 % et
    la réalisation d'une structure à l'étape C a lieu grâce au fait qu'au moins un jet d'eau est orienté vers la bande de fibres solidifiée par jet d'eau, tandis que la bande de fibres est soutenue par une surface qui présente une pluralité de bossages.
  13. Procédé selon la revendication 12, dans lequel l'étape A comprend le filage d'une pluralité de fibres de cellulose, dans lequel les fibres de cellulose sont constituées de filaments de cellulose régénérée et dans lequel au moins 90 % de la masse de matériau filtrant après le séchage à l'étape D est constituée des filaments des cellulose régénérée et dans lequel de préférence les filaments de cellulose régénérée sont constitués de Lyocell®.
  14. Procédé selon la revendication 12, dans lequel l'étape A comprend les étapes A1 à A4 :
    A1- réalisation d'une suspension aqueuse comprenant des fibres de cellulose,
    A2-dépôt de la suspension de l'étape A sur un tamis rotatif,
    A3-déshydratation de la suspension par le tamis rotatif, afin de former une bande de fibres,
    A4-passage de la bande de fibres de l'étape A3 sur un tamis de support,
    dans lequel la suspension aqueuse présente, à l'étape A1, de préférence une teneur en matières solides de maximum 3,0 %, de préférence de maximum 1,0 %, plus particulièrement de préférence de maximum 0,2 % et plus particulièrement de maximum 0,05 % et/ou
    dans lequel le tamis rotatif des étapes A2 et A3 est incliné, dans le sens de déplacement de la bande, de fibres, par rapport à l'horizontale, d'un angle d'au moins 3° et de maximum 40°, de préférence d'un angle d'au moins 5° et de maximum 30° et plus particulièrement de préférence d'un angle d'au moins 15° et de maximum 25° vers le haut et/ou
    comprenant en outre une étape dans laquelle une différence de pression est générée entre les deux côtés du tamis rotatif, afin de favoriser la déshydratation de la suspension à l'étape A3, dans lequel la différence de pression est générée de préférence par des caissons à vide ou une ailette de forme adaptée.
  15. Procédé selon l'une des revendications 12 à 14, dans lequel une pluralité de jets d'eau sont utilisés afin de réaliser la solidification par jet d'eau à l'étape B, dans lequel les jets d'eau sont disposés dans au moins une rangée transversalement par rapport au sens de déplacement de la bande de fibres et/ou
    dans lequel la solidification par jet d'eau à l'étape B est effectuée à l'aide d'au moins deux jets d'eau orientés vers la bande de fibres, dans lequel les au moins deux jets d'eau agissent de préférence sur des côtés différents de la bande de fibres et/ou
    dans lequel la bande de fibres à l'étape C est soutenue par un cylindre sur la surface duquel se trouvent la pluralité de bossages et/ou
    dans lequel la surface de chaque bossage, projetée sur la surface qui soutient la bande de fibres à l'étape C, représente au moins 0,1 mm2 et au maximum 15 mm2, de préférence au moins 0,25 mm2 et maximum 10 mm2 et/ou
    dans lequel le séchage à l'étape D est effectué au moins partiellement par contact avec de l'air chaud, par rayonnement infrarouge ou par rayonnement à micro-ondes et/ou
    dans lequel le matériau filtrant est, après le séchage à l'étape Dn un matériau filtrant selon l'une des revendications 1 à 5.
EP22706576.0A 2021-02-19 2022-02-15 Matériau filtrant structuré pour produits de délivrance de nicotine Active EP4064883B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021104011.6A DE102021104011B4 (de) 2021-02-19 2021-02-19 Strukturiertes filtermaterial für nikotinabgabeprodukte
PCT/EP2022/053672 WO2022175261A1 (fr) 2021-02-19 2022-02-15 Matériau filtrant structuré pour produits de délivrance de nicotine

Publications (2)

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EP4064883A1 EP4064883A1 (fr) 2022-10-05
EP4064883B1 true EP4064883B1 (fr) 2024-08-14

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EP22706576.0A Active EP4064883B1 (fr) 2021-02-19 2022-02-15 Matériau filtrant structuré pour produits de délivrance de nicotine

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US (1) US20240114951A1 (fr)
EP (1) EP4064883B1 (fr)
JP (1) JP7789792B2 (fr)
KR (1) KR20230145571A (fr)
CN (1) CN117119915A (fr)
DE (1) DE102021104011B4 (fr)
ES (1) ES2994434T3 (fr)
WO (1) WO2022175261A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7504205B2 (ja) 2019-12-13 2024-06-21 デルフォルトグループ、アクチエンゲゼルシャフト 喫煙製品用水流交絡フィルタ材料
GB202311830D0 (en) * 2023-08-01 2023-09-13 Nicoventures Trading Ltd A component for an aerosol provision article
TW202508469A (zh) * 2023-08-02 2025-03-01 南韓商韓國煙草人參股份有限公司 具有生物崩解性的吸煙物品用環保過濾器及包含其之吸煙物品

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5738119A (en) * 1994-06-20 1998-04-14 Courtaulds Fibres (Holdings) Limited Filter materials
GB9412311D0 (en) * 1994-06-20 1994-08-10 Courtaulds Fibres Holdings Ltd Filter materials
FI121182B (fi) * 2004-06-18 2010-08-13 Suominen Nonwovens Ltd Menetelmä kuitukankaan valmistamiseksi
US20080271745A1 (en) * 2007-05-04 2008-11-06 Sinclair Daniel S Smoking article and method
JP2011521656A (ja) * 2008-06-02 2011-07-28 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 透明区画を有する喫煙物品
PL3082483T3 (pl) * 2013-12-20 2019-06-28 Philip Morris Products S.A. Filtr wyrobu do palenia zawierający degradowalny składnik filtra
US10076135B2 (en) * 2014-05-23 2018-09-18 Greenbutts Llc Biodegradable cigarette filter tow and method of manufacture
ES2964861T3 (es) 2018-07-31 2024-04-09 Chemiefaser Lenzing Ag Tela no tejida, uso de la tela no tejida y toallita de limpieza, toallita para secar y mascarilla que contiene la tela no tejida
CN110616505A (zh) * 2019-10-15 2019-12-27 南通醋酸纤维有限公司 可用于卷烟滤嘴的复合醋酸纤维非织造材料、制备方法及应用

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JP2024506661A (ja) 2024-02-14
JP7789792B2 (ja) 2025-12-22
ES2994434T3 (en) 2025-01-23
CN117119915A (zh) 2023-11-24
KR20230145571A (ko) 2023-10-17
EP4064883A1 (fr) 2022-10-05
US20240114951A1 (en) 2024-04-11
DE102021104011B4 (de) 2022-11-03
WO2022175261A1 (fr) 2022-08-25
DE102021104011A1 (de) 2022-08-25

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