WO2023079165A1 - Papier actif - Google Patents

Papier actif Download PDF

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Publication number
WO2023079165A1
WO2023079165A1 PCT/EP2022/081093 EP2022081093W WO2023079165A1 WO 2023079165 A1 WO2023079165 A1 WO 2023079165A1 EP 2022081093 W EP2022081093 W EP 2022081093W WO 2023079165 A1 WO2023079165 A1 WO 2023079165A1
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WO
WIPO (PCT)
Prior art keywords
segment
filter
paper
filtering material
embossed
Prior art date
Application number
PCT/EP2022/081093
Other languages
English (en)
Inventor
Rosi Ana QOLBI
Ian ANINDYA
N/a GIYANTO
Sulistyo WIDODO
Sudirman WIDIARTO
Original Assignee
Essentra Filter Products Development Co. Pte. Ltd
Essentra Filter Products Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Essentra Filter Products Development Co. Pte. Ltd, Essentra Filter Products Limited filed Critical Essentra Filter Products Development Co. Pte. Ltd
Publication of WO2023079165A1 publication Critical patent/WO2023079165A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
    • A24D3/068—Biodegradable or disintegrable
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/061—Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • 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
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • A24D3/163—Carbon
    • 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
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • A24D3/166—Silicic acid or silicates
    • 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

Definitions

  • the present invention provides a multi-segment filter for use with a smoking article such as a cigarette, tobacco heating product or a heat-not-burn product.
  • Filters or filter elements for smoking articles such as cigarettes, tobacco heating products or heat-not-burn products may be manufactured from a number of different materials.
  • 98% of commercial cigarette filters comprise an amount of cellulose acetate (source: Euromonitor International).
  • cellulose acetate is not biodegradable and as a result smoking articles comprising cellulose acetate may persist in the environment for many years. Due to this, and in consideration of new EU legislation coming into force by 2021 (aimed at reducing the use of single-use plastics such as cellulose acetate in filters), there is increasing interest in filters or filter elements that do not comprise single-use plastics and are biodegradable.
  • Paper filters comprising paper as the filtering material are well known in the art. Paper filters offer a number of advantages over cellulose acetate filters in terms of enhanced biodegradability and higher filtration efficiencies at a given pressure drop. However, they also have a number of disadvantages compared to cellulose acetate filters, for example they may have a deleterious effect on the taste of the cigarette and reduced filter firmness. Further, paper filters typically have poor retention of gas phase constituents in the smoke or vapour.
  • a filter for a smoking article e.g. a cigarette, a tobacco heating product, a heat-not-burn product
  • a smoking article e.g. a cigarette, a tobacco heating product, a heat-not-burn product
  • a filter for a smoking article which has improved biodegradability compared to conventional materials such as cellulose acetate and provides acceptable filtration properties, particularly in relation to gas phase constituents in the smoke or vapour.
  • a multi-segment filter comprising a first and second filter segment; wherein the first filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core comprising embossed paper filtering material and/or embossed other biodegradable filtering material with a particulate additive embedded therein; and wherein the second filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core comprising paper filtering material or other biodegradable filtering material.
  • the embossed paper filtering material and/or embossed other biodegradable filtering material of the first and/or second filter segment of the present invention is biodegradable and has an enhanced biodegradability compared to cellulose acetate. Therefore, the present invention provides a multi-segment filter of enhanced biodegradability, and thus is more environmentally friendly and is more in line with Ell legislation.
  • biodegradable refers to the filtering material, filter segment or multi-segment filter being able to exhibit a biodegradation of at least 90% after 6 months under controlled composting conditions (see ISO14855-1 Determination of the ultimate aerobic biodegradability of plastic materials under controlled composting conditions - Method by analysis of evolved carbon dioxide).
  • the biodegradable filtering material, filter segment or multi-segment filter is “readily biodegradable”.
  • readily biodegradable refers to the filtering material, filter segment or multi-segment filter being able to disintegrate rapidly and completely biodegrade when immersed in water.
  • the filtering material, filter segment or multi-segment filter has the ‘Ready Biodegradability’ level of biodegradability as measured according to OECD 301 B ‘Ready Biodegradability’ method (modified Sturm test), which is well known in the art.
  • the phase “readily biodegradable” will here be understood to mean ‘Ready Biodegradability’ level of biodegradability.
  • a multi-segment filter (e.g., for a smoking article such as a cigarette, a tobacco heating product, a HNB product) that comprises a first and second filter segment; wherein the first filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core comprising embossed paper filtering material and/or embossed other biodegradable filtering material with a particulate additive embedded therein; and wherein the second filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core of paper filtering material or other biodegradable filtering material provides excellent filtration performance while also being biodegradable.
  • a multi-segment filter e.g., for a smoking article such as a cigarette, a tobacco heating product, a HNB product
  • the first filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core comprising embossed paper filtering material and/or embossed other biodegradable filtering material with a particulate additive embedded therein
  • the embossed paper filtering material and/or embossed other biodegradable filtering material (with particulate additive embedded therein) of the first filter segment is gathered into rod form and secured in place (e.g., by a lapped and stuck seam as is known in the art) with a wrapper (e.g., a paper wrapper, e.g., a plug wrap) engaged around the rod.
  • a wrapper e.g., a paper wrapper, e.g., a plug wrap
  • the wrapper may be a paper (e.g., a plugwrap) of basis weight from 25 to 140 gsm, e.g., a paper (e.g., plugwrap) of basis weight from 40 to 120 gsm, e.g., a paper (e.g., plugwrap) of basis weight from 50 to 100 gsm, e.g., a paper (e.g., plugwrap) of basis weight from 60 to 80 gsm, e.g., a paper (e.g., plugwrap) of basis weight of 70 gsm.
  • a paper e.g., a plugwrap of basis weight from 25 to 140 gsm
  • a paper (e.g., plugwrap) of basis weight from 40 to 120 gsm e.g., a paper (e.g., plugwrap) of basis weight from 50 to 100 gsm, e.g., a paper (e.g., plug
  • the wrapper (e.g., a paper wrapper, e.g., a plugwrap) may be non-porous.
  • the wrapper e.g., a paper wrapper, e.g., a plugwrap
  • the particulate additive may be activated carbon (e.g., activated carbon granules), zeolite, ion exchange resin (e.g., a weakly basic anion exchange resin), sepiolite (e.g., sepiolite granules), silica gel, alumina, molecular sieve, carbonaceous polymer resins and diatomaceous earths.
  • the particulate additive may be a mixture of two or more of these additives.
  • a particulate additive e.g., activated carbon
  • a filter or a filter segment of a multi-segment filter may remove (i.e. , adsorb) gas phase constituents in the smoke or vapour of the smoking article and consequently improve the filtration performance of the filter.
  • a particulate additive e.g., activated carbon
  • a particulate additive embedded into the embossed paper filtering material and/or embossed other biodegradable filtering material
  • a standard active acetate filter i.e., activated carbon on cellulose acetate tow
  • filters comprising paper impregnated with activated carbon (e.g., carbon impregnated paper).
  • an amount of the plasticiser present in cellulose acetate filters i.e., for fibre bonding and to increase filter firmness
  • the activated carbon or other particulate additive
  • the particulate additive may be of mesh size in the range 12 to 90.
  • the particulate additive is of mesh size 30/70 or mesh size 40/60.
  • mesh size is defined as the number of openings in one square inch of a screen.
  • mesh size 30/70 means particles that are smaller than 30 mesh and larger than 70 mesh
  • mesh size 40/60 means particles that are smaller than 40 mesh and larger than 60 mesh.
  • the applicants have found particulate additives of mesh size 30/70 are particularly suitable for application to paper filtering material and/or other biodegradable filtering material whilst also providing desirable adsorption properties (i.e. , to adsorb gas phase constituents).
  • particulate additive is embedded into the embossed paper filtering material and/or embossed other biodegradable filtering material.
  • particulate additive may be embedded into the embossed paper filtering material and/or embossed other biodegradable filtering material without the use of adhesive and/or binder and/or a polymer.
  • a particulate additive e.g., activated carbon
  • embedding the particulate additive may prevent the particles from discharging and falling out of place during use of the multisegment filter (e.g., in a smoking article) thus providing a more enjoyable experience for the smoker.
  • the particulate additive may include a flavourant e.g., menthol, peppermint, fruit, berry, vanilla, chocolate, coffee etc.
  • a flavourant e.g., menthol, peppermint, fruit, berry, vanilla, chocolate, coffee etc.
  • the additive may be sepiolite granules to which a menthol flavourant has been applied.
  • the multi-segment filter may further comprise a liquid additive.
  • the liquid additive may remove (i.e., adsorb) gas phase constituents in the smoke or vapour of the smoking article and consequently improve the filtration performance of the multi-segment filter.
  • the liquid additive may be a flavour enhancing additive.
  • the flavour enhancing additive may be any known in the art, for example an additive which reduces the “paper taste” (e.g., menthol, peppermint, fruit, berry, vanilla, chocolate, coffee etc. with a suitable carrier e.g., propylene glycol, vegetable glycerine, medium-chain triglyceride (MCT) oil, other oils).
  • flavour enhancing additive may overcome the “paper taste” sensation typically associated with paper filters and when used in a smoking article (e.g., a cigarette, e.g., a tobacco heating product, e.g., a HNB product) may provide sensory characteristics similar to those from cellulose acetate filtered smoking articles.
  • a smoking article e.g., a cigarette, e.g., a tobacco heating product, e.g., a HNB product
  • a smoking article e.g., a cigarette, e.g., a tobacco heating product, e.g., a HNB product
  • the loading of the particulate additive may be from 1 to 6 mg/mm (e.g., 1 mg/mm, e.g., 2 mg/mm, e.g., 3 mg/mm, e.g., 4 mg/mm, e.g., 5 mg/mm, e.g., 6 mg. mm).
  • the additive loading is 5 mg/mm.
  • the (embossed) paper filtering material and/or (embossed) other biodegradable filtering material of the first and/or second filter segment may be paper (in any form) which is conventionally used in filters for smoking articles.
  • the paper may be, for example, standard paper, non-woven paper, airlaid paper, carbon impregnated paper (i.e. , for higher additive loading) or cellulose/lyocell/viscose based paper.
  • the paper may be a non-woven paper made with non-plastic plant based fibres (e.g., flax, hemp, jute, sisal, abaca, coconut, bamboo, starch or wood pulp) or a blend of these materials.
  • standard or non-woven paper filtering materials are particularly suitable for the first and/or second filter segment because they have excellent filtration properties while also being biodegradable. Further, the applicants have found that they can achieve parity on particulate additive loading when the additive is embedded in standard paper or non-woven paper compared to when the additive is applied to standard cellulose acetate filters.
  • multi-segment filters of the invention which comprise a second filter segment comprising a longitudinally extending (e.g., substantially cylindrical) core of paper filtering material or other biodegradable filtering material may have higher retention of tar, nicotine and gas phase constituents in the smoke or vapour than standard cellulose acetate filters or filters comprising cellulose acetate.
  • the (embossed) paper filtering material and/or (embossed) other biodegradable filtering material of the first and/or second filter segment may be comprised of multiple (i.e., more than one) sheets of paper filtering material and/or other biodegradable filtering material.
  • the paper filtering material and/or other biodegradable filtering material of the first filter segment is embossed
  • the paper filtering material and/or other biodegradable filtering material of the second filter segment may be embossed.
  • the applicants have found that they can achieve a high additive loading and consequently good filtration performance when particulate additive is embedded into embossed sheets of paper filtering material and/or other biodegradable filtering material. Further, embedding additive into embossed sheets of paper filtering material and/or embossed other biodegradable filtering material may prevent any particulate additive discharging and falling out during use of the multisegment filter.
  • the embossed surface of paper filtering material and/or embossed other biodegradable filtering material may provide suitable surface characteristics for the particulate additive to embed into.
  • the embossed surface may help to achieve high additive loading with minimal additive fall-out.
  • embossed paper filtering material and/or embossed other biodegradable filtering material with particulate additive embedded therein is straightforward to gather into rod form and form a evenly gathered rod paper filtering material and/or other biodegradable filtering material.
  • the first and/or second filter segment may comprise a capsule or capsules (e.g. a frangible capsule) with an additive contained therein.
  • the additive may be a particulate additive such as activated carbon (see above).
  • the capsule(s) may contain a variety of media - e.g., a flavourant and/or a liquid, solid or other material additive e.g., to aid smoke filtration. The use of capsules is well known in the art.
  • the second filter segment may comprise a longitudinally extending hollow tube of paper filtering material and/or other biodegradable material.
  • the length of the first and/or second filter segment is from 10 to 40 mm, e.g., from 12 to 35 mm, e.g., from 15 to 30 mm, e.g., from 18 to 25 mm.
  • the length of the multi-segment filter is from 10 to 50 mm, e.g., from 12 to 40 mm, e.g., from 15 to 30 mm, e.g., from 18 to 24 mm.
  • the circumference of the multi-segment filter is from 14 to 30 mm, e.g., from 16 to 25 mm, e.g., from 24 to 25 mm.
  • the multi-segment filter has ‘Ready Biodegradability’ level of biodegradability as measured according to OECD 301 B ‘Ready Biodegradability’ method (modified Sturm test).
  • the multi-segment filter exhibits a biodegradation of at least 90% after 6 months as measured according to ISO 14855-1.
  • the multi-segment filter (e.g., for a smoking article such as a cigarette, a tobacco heating product, a HNB product) may not comprise cellulose acetate.
  • the (embossed) paper filtering material and/or (embossed) other biodegradable (e.g., non-cellulose acetate containing) filtering material of the first and/or second filter segment may not comprise cellulose acetate.
  • the first filter segment and the second filter segment may be abutted together end-to-end.
  • the multi-segment filter may comprise a wrapper (e.g., a paper wrapper, e.g., a plug wrap) engaged around the first filter segment and second filter segment, wherein the wrapper joins the first filter segment and second filter segment together in longitudinally spaced or abutting alignment.
  • a wrapper e.g., a paper wrapper, e.g., a plug wrap
  • the wrapper may be a paper (e.g., a plugwrap) of basis weight from 25 to 140 gsm, e.g., a paper (e.g., plugwrap) of basis weight from 40 to 120 gsm, e.g., a paper (e.g., plugwrap) of basis weight from 50 to 100 gsm, e.g., a paper (e.g., plugwrap) of basis weight from 60 to 80 gsm, e.g., a paper (e.g., plugwrap) of basis weight of 70 gsm.
  • a paper e.g., a plugwrap of basis weight from 25 to 140 gsm
  • a paper (e.g., plugwrap) of basis weight from 40 to 120 gsm e.g., a paper (e.g., plugwrap) of basis weight from 50 to 100 gsm, e.g., a paper (e.g., plug
  • the wrapper (e.g., a paper wrapper, e.g., a plugwrap) may be non-porous.
  • the wrapper e.g., a paper wrapper, e.g., a plugwrap
  • the multi-segment filter according to the present invention may comprise one or more discrete further segments (e.g., of a HNB mouthpiece, e.g., filter elements).
  • the multi-segment filter construction could be two, three, four or more discrete segments.
  • the discrete further segments may be (e.g., cylindrical) plugs of filtering material (e.g., paper filtering material and/or other biodegradable filtering material) as described above which may include capsules, carbon, CPS, tubes, acetate, paper, menthol etc. and/or a (e.g., cylindrical) rod of tobacco (e.g., any form of tobacco(including reconstituted tobacco)).
  • the multi-segment filter according to the present invention may comprise a first, second and third filter segment; wherein the first filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core comprising embossed paper filtering material and/or embossed other biodegradable filtering material with a particulate additive embedded therein; wherein the second filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core of paper filtering material or other biodegradable filtering material; and wherein the third filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core of paper filtering material or other biodegradable filtering material, which is optionally embossed.
  • the first filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core comprising embossed paper filtering material and/or embossed other biodegradable filtering material with a particulate additive embedded therein
  • the second filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core of paper filtering material or other bio
  • the embossed paper filtering material and/or embossed other biodegradable filtering material (with particulate additive embedded therein) of the first filter segment may be gathered into rod form and secured in place (e.g., by a lapped and stuck seam as is known in the art) with a wrapper (e.g., a paper wrapper, e.g., a plug wrap) engaged around the rod, as described above.
  • a wrapper e.g., a paper wrapper, e.g., a plug wrap
  • the first, second and third filter segments may be joined together in longitudinally spaced or abutting alignment by a wrapper, engaged around the first, second and third filter segments.
  • the first filter segment may be abutted end-to-end with the second filter segment at one end and abutted end-to-end with the third filter segment at the other end.
  • the second filter segment may be abutted end-to-end with the first filter segment at one end and abutted end-to-end with the third filter segment at the other end.
  • a smoking article e.g., a cigarette, e.g., a tobacco heating product, e.g., a HNB product
  • a multi-segment filter as herein described and claimed below, or a multi-segment filter comprising a multi-segment filter as herein described and claimed below, joined to a wrapped tobacco rod (i.e. , by a tipping paper) with one end of the multi-segment filter facing towards the tobacco rod.
  • the first filter segment of the multi-segment filter faces the tobacco rod
  • the second filter segment is the mouth-end segment. This configuration may prevent any particulate additive discharging and falling out during use of the smoking article thus providing a more enjoyable experience for the smoker.
  • the smoking article e.g., a cigarette, e.g., a tobacco heating product, e.g., a HNB product
  • the smoking article may comprise one or more discrete further segments (e.g., of a HNB mouthpiece, e.g., filter elements) as described above.
  • Figure 1 shows a schematic view of a multi-segment filter according to an embodiment of the invention
  • Figure 2 shows a schematic view of a multi-segment filter according to an embodiment of the invention
  • Figure 3 shows a schematic view of a smoking article according to the invention which includes a multi-segment filter according to an embodiment of the invention
  • Figure 4 shows a schematic view of a smoking article according to the invention which includes a multi-segment filter according to an embodiment of the invention
  • Figure 1 illustrates a schematic view of a multi-segment filter 100 which is of length 30 mm and circumference 24 mm and comprises two segments 101 and 104.
  • Segment 101 comprises a longitudinally extending core of embossed airlaid non-woven paper 103 with embedded activated carbon granules 102 (4.9 mg/mm) and is of length 20 mm and circumference 24 mm.
  • Segment 104 abuts segment 101 and comprises a longitudinally extending core of hemp paper 104 and is of length 10 mm and circumference 24 mm.
  • Figure 2 shows a schematic view of a multi-segment filter 200 which is of length 30 mm and circumference 24 mm and comprises two segments 201 and 204.
  • Segment 201 is of length 20 mm and circumference 24 mm and comprises a longitudinally extending core of embossed airlaid non-woven paper 203 with embedded activated carbon granules 202 (4.9 mg/mm) and a wrapper 205 of basis weight 100 gsm engaged around the core.
  • Segment 204 abuts segment 201 and comprises a longitudinally extending core of hemp paper 204 and is of length 10 mm and circumference 24 mm.
  • Segment 204 is joined to segment 201 by wrapper 207 (not shown) of paper plugwrap of basis weight 120 gsm engaged around both segments.
  • FIG 3 and Figure 4 show a schematic view of cigarette 300 which is of length 100 mm and circumference 24 mm.
  • Cigarette 300 comprises a cylindrical plug 306 of reconstituted tobacco and multi-segment filter 200, as shown in Figure 2.
  • Plug 306 of reconstituted tobacco is of length 70 mm and circumference 24 mm and is abutted and joined to multisegment filter 200 at the end of segment 201 by a tipping paper (not shown).
  • multi-segment filters 100 and 200 may be made by methods known in the art.
  • biodegradability of the (embossed) paper filtering material and/or (embossed) other biodegradable filtering material of the first and/or second filter segment of the multisegment filter of the present invention was compared with the biodegradability of a known cellulose acetate filter.
  • the biodegradability was measured according to ISO14855-1 Determination of the ultimate aerobic biodegradability of plastic materials under controlled composting conditions - Method by analysis of evolved carbon dioxide. The test provides a measure of the biodegradability of a material (expressed as a percentage) over a 180 day period under optimal oxygen, temperature and moisture conditions.
  • Table 1 shows the biodegradability results for a Mono-Acetate filter, an airlaid paper filter (Genia), a wood pulp paper filter and a hemp paper filter compared to a standard cellulose acetate (CA) filter rod when tested according to the method of ISO14855-1. Filters were purchased or made according to methods known in the art.
  • Table 1 shows that wood pulp paper and hemp paper have the highest biodegradability of all the filtering materials. Further, the airlaid paper (Genia) also demonstrates good biodegradability compared to CA. Table 1 also shows that filters comprising wood pulp paper, hemp paper and airlaid paper (Genia) also have comparable hardness (i.e., firmness) compared to a Mono Acetate filter.
  • the (embossed) paper filtering material and/or other (embossed) biodegradable filtering material of the first and/or second filter segment of the multi-segment filter of the present invention are biodegradable and degrade faster and more extensively than cellulose acetate.
  • a multi-segment filter comprising a first and second filter segment; wherein the first filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core of paper filtering material and/or other biodegradable (e.g., non-cellulose acetate) filtering material with additive (e.g., a particulate additive, e.g., activated carbon) applied thereto; and wherein the second filter segment comprises a longitudinally extending (e.g., substantially cylindrical) core of paper filtering material or other biodegradable (e.g., noncellulose acetate) filtering material.
  • additive e.g., a particulate additive, e.g., activated carbon
  • a wrapper e.g., a paper, e.g., a plug wrap
  • a paper e.g., a plugwrap of basis weight from 25 to 140 gsm
  • a paper (e.g., plugwrap) of basis weight from 40 to 120 gsm e.g., a paper (e.g., plugwrap) of basis weight from 50 to 100 gsm, e.g
  • activated carbon e.g., activated carbon granules
  • zeolite e.g., a weakly basic anion exchange resin
  • sepiolite e.g., sepiolite granules
  • silica gel e.g., silica gel, alumina, molecular sieves
  • carbonaceous polymer resin e.g., a diatomaceous earth, or a mixture of two or more of these additives.
  • biodegradable e.g., noncellulose acetate
  • the additive loading is from 1 to 6 mg/mm (e.g., 1 mg/mm, e.g., 2 mg/mm, e.g., 3 mg/mm, e.g., 4 mg/mm, e.g., 5 mg/mm, e.g., 6 mg. mm).
  • a multi-segment filter according to any preceding paragraph wherein the paper filtering material and/or other biodegradable (e.g., non-cellulose acetate containing) filtering material of the first and/or second filter segment is standard paper, non-woven paper, airlaid paper, carbon impregnated paper (i.e. , for higher additive loading) or cellulose/lyocell/viscose based papers.
  • a multi-segment filter according to any preceding paragraph wherein the paper filtering material and/or other biodegradable (e.g., non-cellulose acetate containing) filtering material of the first and/or second filter segment is a non-woven paper made with nonplastic plant based fibres (e.g., flax, hemp, jute, sisal, abaca, coconut, bamboo, starch or wood pulp) or a blend of these materials.
  • nonplastic plant based fibres e.g., flax, hemp, jute, sisal, abaca, coconut, bamboo, starch or wood pulp
  • biodegradable e.g., non-cellulose acetate containing
  • biodegradable e.g., non-cellulose acetate containing
  • first and/or second filter segment comprises a capsule or capsules (e.g. a frangible capsule) with an additive contained therein.
  • a multi-segment filter according to any preceding paragraph comprising one or more discrete further segments.
  • a multi-segment filter according to paragraph 23 wherein the one or more discrete further segments is a segment comprising a longitudinally extending (e.g., substantially cylindrical) core of paper filtering material or other biodegradable (e.g., non-cellulose acetate) filtering material.
  • a smoking article e.g., a cigarette, e.g., a tobacco heating product, e.g., a HNB product
  • a multi-segment filter according to any preceding paragraph or a multi-segment filter comprising a multi-segment filter according to any preceding paragraph, joined to a wrapped tobacco rod (i.e., by a tipping paper) with the end of the first filter segment facing towards the tobacco rod.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Filtering Materials (AREA)

Abstract

La présente invention concerne un filtre à segments multiples qui comprend un premier et un second segment de filtre ; le premier segment de filtre comprenant un cœur s'étendant longitudinalement (par exemple, sensiblement cylindrique) comprenant un matériau filtrant en papier gaufré et/ou un autre matériau filtrant biodégradable gaufré dans lequel est incorporé un additif particulaire ; et le second segment de filtre comprenant un cœur s'étendant longitudinalement (par exemple, sensiblement cylindrique) comprenant un matériau filtrant en papier ou un autre matériau filtrant biodégradable.
PCT/EP2022/081093 2021-11-08 2022-11-08 Papier actif WO2023079165A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2115989.2 2021-11-08
GB202115989 2021-11-08

Publications (1)

Publication Number Publication Date
WO2023079165A1 true WO2023079165A1 (fr) 2023-05-11

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PCT/EP2022/081093 WO2023079165A1 (fr) 2021-11-08 2022-11-08 Papier actif

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Country Link
EP (1) EP4176736A1 (fr)
WO (1) WO2023079165A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011077138A1 (fr) * 2009-12-21 2011-06-30 British American Tobacco (Investments) Limited Matériaux de feuille filtrante avec additifs
US20130047999A1 (en) * 2009-12-21 2013-02-28 British American Tobacco (Investments) Limited Enhancing the Disintegration and/or Degradation of a Smoking Article
US20150059789A1 (en) * 2012-02-23 2015-03-05 Anthony Denis McCormack Tobacco smoke filter
EP2712510B1 (fr) * 2012-09-28 2016-03-02 Reemtsma Cigarettenfabriken GmbH Article à fumer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011077138A1 (fr) * 2009-12-21 2011-06-30 British American Tobacco (Investments) Limited Matériaux de feuille filtrante avec additifs
US20130047999A1 (en) * 2009-12-21 2013-02-28 British American Tobacco (Investments) Limited Enhancing the Disintegration and/or Degradation of a Smoking Article
US20150059789A1 (en) * 2012-02-23 2015-03-05 Anthony Denis McCormack Tobacco smoke filter
EP2712510B1 (fr) * 2012-09-28 2016-03-02 Reemtsma Cigarettenfabriken GmbH Article à fumer

Also Published As

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