EP4183273A1 - Filtre de papier - Google Patents
Filtre de papier Download PDFInfo
- Publication number
- EP4183273A1 EP4183273A1 EP21216337.2A EP21216337A EP4183273A1 EP 4183273 A1 EP4183273 A1 EP 4183273A1 EP 21216337 A EP21216337 A EP 21216337A EP 4183273 A1 EP4183273 A1 EP 4183273A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- mouthpiece
- wrapper
- filter element
- paper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 53
- 238000001914 filtration Methods 0.000 claims abstract description 50
- 229920002301 cellulose acetate Polymers 0.000 claims abstract description 40
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 239000000123 paper Substances 0.000 claims description 90
- 238000000034 method Methods 0.000 claims description 22
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims description 16
- 230000000391 smoking effect Effects 0.000 claims description 16
- 235000019504 cigarettes Nutrition 0.000 claims description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 244000025254 Cannabis sativa Species 0.000 claims description 5
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 5
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229920001131 Pulp (paper) Polymers 0.000 claims description 5
- 235000009120 camo Nutrition 0.000 claims description 5
- 235000005607 chanvre indien Nutrition 0.000 claims description 5
- 238000009264 composting Methods 0.000 claims description 5
- 239000011487 hemp Substances 0.000 claims description 5
- 239000004752 air-laid paper Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 244000198134 Agave sisalana Species 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 244000060011 Cocos nucifera Species 0.000 claims description 2
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 2
- 240000000491 Corchorus aestuans Species 0.000 claims description 2
- 235000011777 Corchorus aestuans Nutrition 0.000 claims description 2
- 235000010862 Corchorus capsularis Nutrition 0.000 claims description 2
- 241000196324 Embryophyta Species 0.000 claims description 2
- 240000006240 Linum usitatissimum Species 0.000 claims description 2
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 2
- 229920000433 Lyocell Polymers 0.000 claims description 2
- 240000000907 Musa textilis Species 0.000 claims description 2
- 244000082204 Phyllostachys viridis Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 229920000297 Rayon Polymers 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 244000061176 Nicotiana tabacum Species 0.000 claims 2
- 241000208125 Nicotiana Species 0.000 description 14
- 239000000779 smoke Substances 0.000 description 10
- 239000000654 additive Substances 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000000796 flavoring agent Substances 0.000 description 3
- 235000019634 flavors Nutrition 0.000 description 3
- 230000001953 sensory effect Effects 0.000 description 3
- NOOLISFMXDJSKH-UTLUCORTSA-N (+)-Neomenthol Chemical compound CC(C)[C@@H]1CC[C@@H](C)C[C@@H]1O NOOLISFMXDJSKH-UTLUCORTSA-N 0.000 description 2
- NOOLISFMXDJSKH-UHFFFAOYSA-N DL-menthol Natural products CC(C)C1CCC(C)CC1O NOOLISFMXDJSKH-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000004113 Sepiolite Substances 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 229940041616 menthol Drugs 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229910052624 sepiolite Inorganic materials 0.000 description 2
- 235000019355 sepiolite Nutrition 0.000 description 2
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 244000246386 Mentha pulegium Species 0.000 description 1
- 235000016257 Mentha pulegium Nutrition 0.000 description 1
- 235000004357 Mentha x piperita Nutrition 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 235000009499 Vanilla fragrans Nutrition 0.000 description 1
- 244000263375 Vanilla tahitensis Species 0.000 description 1
- 235000012036 Vanilla tahitensis Nutrition 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 235000019568 aromas Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000021028 berry Nutrition 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 235000019219 chocolate Nutrition 0.000 description 1
- 235000016213 coffee Nutrition 0.000 description 1
- 235000013353 coffee beverage Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- RUZYUOTYCVRMRZ-UHFFFAOYSA-N doxazosin Chemical compound C1OC2=CC=CC=C2OC1C(=O)N(CC1)CCN1C1=NC(N)=C(C=C(C(OC)=C2)OC)C2=N1 RUZYUOTYCVRMRZ-UHFFFAOYSA-N 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 235000001050 hortel pimenta Nutrition 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
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
- A24D3/04—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 FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—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
- A24D3/08—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
Definitions
- the present invention provides a mouthpiece, filter or filter element for use with a smoking article such as a cigarette, tobacco heating product or a heat-not-burn product.
- Mouthpieces, filters or filter elements for smoking articles such as cigarettes, tobacco heating products or heat-not-burn (HNB) products may be manufactured from a number of different materials.
- cellulose acetate is not biodegradable and, as a result, cigarette filters (and cigarette butts) 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 filters), there is increasing interest in filter elements (such as mouthpieces) 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 for example they may have a deleterious effect on the taste of the cigarette and a low retention of toxic phenolic compounds. Thus, the experience of smoking cigarettes with conventional paper (i.e., mono-paper) filters is not comparable to that from a conventional cellulose acetate filtered cigarette.
- a mouthpiece, filter or filter element for a smoking article e.g., a cigarette, a tobacco heating product, a heat-not-burn (HNB) product
- a smoking article e.g., a cigarette, a tobacco heating product, a heat-not-burn (HNB) product
- HNB heat-not-burn
- a mouthpiece, filter or filter element (e.g., for a smoking article such as a cigarette, a tobacco heating product, a HNB product) comprising a longitudinally extending core of paper or other biodegradable (e.g., non-cellulose acetate containing) filtering material, a first wrapper (e.g., plugwrap) engaged around the peripheral surface of the core, and a second wrapper (e.g., plugwrap) engaged around the first wrapper, the first wrapper defining at least with the second wrapper a plurality of channels extending longitudinally from the upstream end of the mouthpiece, filter or filter element and/or a plurality of channels extending longitudinally from the downstream end of the mouthpiece, filter or filter element.
- a first wrapper e.g., plugwrap
- a second wrapper e.g., plugwrap
- a mouthpiece, filter or filter element (e.g., for a smoking article such as a cigarette, a tobacco heating product, a HNB product) comprising a longitudinally extending core of paper or other biodegradable (e.g., non-cellulose acetate containing) filtering material, a first wrapper (e.g., plugwrap) engaged around the peripheral surface of the core, and a second wrapper (e.g., plugwrap) engaged around the first wrapper, the first wrapper defining at least with the second wrapper a plurality of channels extending longitudinally of the mouthpiece, filter or filter element and which (e.g., extend only part of the core length and) do not extend from either the upstream or downstream ends of the mouthpiece, filter or filter element.
- a first wrapper e.g., plugwrap
- a second wrapper e.g., plugwrap
- the paper or other biodegradable (e.g., non-cellulose acetate) filtering material of the longitudinally extending core of the present invention is biodegradable and has an enhanced biodegradability compared to cellulose acetate. Therefore, the present invention provides a mouthpiece, filter or filter element of enhanced biodegradability, and thus is more environmentally friendly and is more in line with EU legislation.
- biodegradable e.g., non-cellulose acetate
- biodegradable refers to the paper or other biodegradable filtering material, mouthpiece, filter or filter element 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 paper or other biodegradable filtering material, mouthpiece, filter or filter element is "readily biodegradable".
- readily biodegradable refers to the paper or other biodegradable filtering material, mouthpiece, filter or filter element being able to disintegrate rapidly and completely biodegrade when immersed in water.
- the paper or other biodegradable filtering material, mouthpiece, filter or filter element has the 'Ready Biodegradability' level of biodegradability as measured according to OECD 301B '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.
- the channels may extend only part of the length of the core. In other examples, the channels may extend the full length of the core.
- the channels may extend only part of the length of the core, the channels will be closed or blocked at the end remote from the end of the mouthpiece, filter or filter element from which the channels extend. It will further be appreciated that where the channels extend for the full length of the core, the channels will be open at both the upstream and downstream end of the mouthpiece, filter or filter element.
- At least one longitudinally extending portion of the mouthpiece, filter or filter element may include no channels within its cross-section. It will be appreciated that the portion(s) may be located at either end or both ends of the mouthpiece, filter or filter element (i.e., the downstream end and/or the upstream end) or the portion may be located in the middle of the mouthpiece, filter or filter element.
- the (or each) portion of the mouthpiece, filter or filter element which does not include channels within its cross-section is herein referred to as a bar or bar portion.
- the (or each) portion of the mouthpiece, filter or filter element which includes longitudinally extending channels (which extend for either the full length or only part of the length of the core) is herein referred to as a flute or fluted portion.
- a mouthpiece, filter or filter element according to the invention includes a 9 mm flute section at one end of the mouthpiece, filter or filter element and an 18 mm bar section for the remaining length of the mouthpiece, filter or filter element (i.e., the other end of the mouthpiece, filter or filter element).
- a mouthpiece, filter or filter element according to the invention includes a 7 mm flute section at the downstream end of the mouthpiece, filter or filter element, a 7 mm flute section at the upstream end of the mouthpiece, filter or filter element and a 7 mm bar section in between the fluted portions.
- a mouthpiece, filter or filter element according to the invention is fully fluted, and includes a 27 mm flute section for the full length of the mouthpiece, filter or filter element.
- a mouthpiece, filter or filter element according to the invention includes a 7 mm bar section at the downstream end of the mouthpiece, filter or filter element, a 7 mm bar section at the upstream end of the mouthpiece, filter or filter element and a 7 mm flute section in between the bar portions.
- the mouthpiece, filter or filter element of the invention may have fluted and/or bar portions.
- the length of the fluted portion(s) may be from 5 to 30 mm, e.g., from 8 to 25 mm, e.g., from 10 to 20 mm, e.g., from 12 to 15 mm.
- the length of the bar portion(s) may be from 5 to 30 mm, e.g., from 8 to 25 mm, e.g., from 10 to 20 mm, e.g., from 12 to 15 mm.
- a mouthpiece, filter or filter element comprising flutes or flutes and bars may provide improved filtering performance, particularly in relation to phenols, compared to a conventional paper (e.g., mono-paper) filter.
- a conventional paper e.g., mono-paper
- the channels of the fluted portion(s) increases the surface area available for smoke filtration, consequently reducing phenol yield compared to a mono-paper filter.
- a mouthpiece, filter or filter element according to the invention may reduce phenol yield by up to 12% compared to a mono-paper filter.
- the applicants have found that, in comparison to other mouthpieces, filters or filter elements comprising flutes or flutes and bars, for example Corinthian TM filter, for example CPS TM filter, which are made from cellulose acetate bonded with plasticizer to create the flutes, the mouthpiece, filter or filter element of the present invention is plastic-free and consequently, biodegradable, whilst still providing acceptable filtration and sensory properties.
- Corinthian TM filter for example CPS TM filter
- the length of the channels is from 5 mm to 30 mm, e.g., from 9 mm to 25 mm.
- the channels extending longitudinally from one end (upstream or downstream) may be a different length to those extending from the other end, or they may be the same length.
- the channels will be preferably of substantially uniform depth over their longitudinal extent, although there may be variation, for example if a channel extends only part of the length of the core and consequently has a closed end.
- the depth (e.g., maximum depth) of each channel is from 0.5 mm to 2.6 mm, for example from 0.8 to 2.2 mm, for example from 1.3 to 2.1 mm, preferably from 1.35 to 2 mm, for example from 1.4 to 1.9 mm.
- the width (e.g. maximum width) of each channel is from 1.0 to 3.0 mm, for example from 1.3 to 2.1 mm, preferably from 1.35 to 2 mm, for example from 1.4 to 1.9 mm.
- the mouthpiece, filter or filter element may include from 5 to 25 channels, preferably from 10 to 16 channels, extending longitudinally from the upstream end of the mouthpiece, filter or filter element and/or from 5 to 25 channels, preferably from 10 to 16 channels extending longitudinally from the downstream end of the mouthpiece, filter or filter element.
- the total cross-sectional area of these channels may amount to from 2 to 12%, preferably from 4 to 8%, of the overall cross-sectional area of the mouthpiece, filter or filter element.
- a mouthpiece, filter or filter element comprising channels of these dimensions may provide improved smoothness compared to standard paper (e.g., mono-paper) and standard cellulose acetate (e.g., mono-acetate) filters.
- standard paper e.g., mono-paper
- standard cellulose acetate e.g., mono-acetate
- the first wrapper may be a paper of basis weight from 60 to 100 gsm, e.g., a paper (e.g., plugwrap) of basis weight from 70 to 90 gsm, e.g., a paper (e.g., plugwrap) of basis weight 80 gsm.
- the first wrapper is air permeable.
- the first wrapper may be coloured.
- the first wrapper may be a coloured paper (e.g., plugwrap).
- the colour may be black, red, yellow, orange, green, blue, pink, purple etc. or various tones thereof.
- coloured means a colour (i.e., a hue) that is different to white or off-white (i.e., the colour of paper).
- the first wrapper may have longitudinally extending corrugations (e.g., grooves and ridges) which define with the second wrapper the channels extending longitudinally of the mouthpiece, filter or filter element.
- the first wrapper may be a sheet having a profiled surface, such that it has longitudinally extending corrugations (e.g., grooves and ridges) along regular sections of its length.
- the first wrapper may be engaged around the peripheral surface of the core with the profiled (e.g., corrugated) surface facing the second wrapper.
- Each channel may be provided between the corrugations of the first wrapper and the inner surface of the second wrapper.
- the core of paper or other biodegradable (e.g., non-cellulose acetate containing) filtering material may be conformed to the profiled (e.g., corrugated) surface of the first wrapper.
- the first wrapper may have a corrugated portion (i.e., longitudinally extending corrugations as described above) and a non-profiled (i.e., flat) portion.
- the first wrapper may be a sheet having an alternating profiled and flat surface, such that it has longitudinally extending corrugations (e.g., grooves and ridges) along regular sections of its length and flat portions along regular sections of its length.
- the corrugated portion of the first wrapper may define at least with the second wrapper the channels extending longitudinally of the mouthpiece, filter or filter element (i.e., the fluted portion) while the flat portion of the first wrapper may not define channels [at least with the second wrapper] in the length of the core which the flat portion of the first wrapper engages around (i.e., the bar portion).
- the corrugated and flat portions of the first wrapper may define at least with the second wrapper the fluted and bar regions, respectively, of the mouthpiece, filter or filter element.
- the core of paper or other biodegradable (e.g., non-cellulose acetate containing) filtering material may be conformed to the profiled (e.g., corrugated) and/or non-profiled (i.e., flat) surfaces of the first wrapper.
- the second wrapper may be a paper of basis weight from 25 to 140 gsm, e.g., a paper (e.g., plugwrap) of basis weight from 60 to 100 gm, e.g., a paper (e.g., plugwrap) of basis weight 80 gsm.
- the second wrapper may be air permeable (e.g., up to 32000 Coresta units). Alternatively, the second wrapper may be air impermeable.
- the mouthpiece or filter or filter element may comprise a plurality of further channels defined by the first wrapper and at least the second wrapper which extend longitudinally of the core and which extend only part of the length of the core but which do not extend from either the upstream or downstream ends of the core.
- the mouthpiece or filter or filter element may comprise from 5 to 25 further channels, preferably from 10 to 16 further channels which extend longitudinally of the core and which extend only part of the length of the core but which do not extend from either the upstream or downstream ends of the core. In such an example, there is more than one portion of the filter having no channels (i.e., more than one bar section).
- a mouthpiece, filter or filter element according to the invention includes a 5 mm flute section at one end of the mouthpiece, filter or filter element, a 5 mm bar section adjacent to the flute section, a 5 mm flute section at the other end of the mouthpiece, a 5 mm bar section adjacent to the flute section and a further 5 mm flute section in between the bar portions, such that the channels of this section do not extend from either the upstream or downstream ends of the core.
- the paper filtering material and/or other biodegradable (e.g., non-cellulose acetate containing) filtering material may be paper (in any form) which is conventionally used in filters for smoking articles.
- the paper filtering material and/or other biodegradable (e.g., non-cellulose acetate containing) filtering material may be standard paper, non-woven paper, airlaid paper, carbon impregnated paper or cellulose/lyocell/viscose based papers.
- the paper filtering material and/or other biodegradable (e.g., non-cellulose acetate containing) filtering material may be a non-plastic plant based fibre (e.g., flax, hemp, jute, sisal, abaca, coconut, bamboo, starch or wood pulp or a blend of these materials).
- a non-plastic plant based fibre e.g., flax, hemp, jute, sisal, abaca, coconut, bamboo, starch or wood pulp or a blend of these materials.
- standard paper filtering material may be particularly suitable for the core of the present invention because it has good filtration properties and is flexible, such that it may easily conform to the profiled (e.g., corrugated) and/or non-profiled (i.e., flat) surfaces of the first wrapper, meaning channels are only between the first and second wrapper.
- the length of the mouthpiece, filter or filter element is from 12 to 30 mm, e.g., from 15 to 28 mm, e.g., from 18 to 26 mm, e.g., from 20 to 24 mm.
- the circumference of the mouthpiece, filter or filter element is from 14 to 30 mm, e.g., from 16 to 25 mm, e.g., from 24 to 25 mm.
- the mouthpiece or filter element may be biodegradable, with greater than 90% biodegradability as 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 mouthpiece, filter or filter element has 'Ready Biodegradability' level of biodegradability as measured according to OECD 301B 'Ready Biodegradability' method (modified Sturm test).
- the mouthpiece, filter or filter element may comprise a smoke or vapour modifying agent which may modify or enhance the consumer experience.
- the smoke or vapour modifying agent may impart an additional taste or aroma to the vapour passing through the mouthpiece or filter or may be able to supress certain flavours or aromas.
- the smoke or vapour modifying agent may be located in or on the longitudinally extending core of paper or other biodegradable (e.g., non-cellulose acetate containing) filtering material or on the first and/or second wrapper.
- the smoke or vapour modifying agent may be a particulate additive.
- 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.
- the smoke or vapour modifying agent may be a liquid additive (e.g., a flavour enhancing additive, e.g., an additive for smoke chemistry benefits).
- the flavour enhancing additive may be any known in the art, for example 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.
- a suitable carrier e.g., propylene glycol, vegetable glycerine, medium-chain triglyceride (MCT) oil, other oils.
- MCT medium-chain triglyceride
- the additive for smoke chemistry benefits may be PG, PEG, Triacetin or TEC.
- the mouthpiece, filter or filter element of the invention may be used in a multi-segment filter as a single segment with one or more discrete further segments.
- the filter construction could be two, three, four or more discrete segments.
- the discrete segments may be, for example, (e.g., cylindrical) plugs of filtering material (e.g., paper filtering material and/or other biodegradable (e.g., non-cellulose acetate containing) filtering material) that may include capsules, carbon, CPS, tubes, acetate, paper, menthol etc.
- the multi-segment filter may be attached to a tobacco rod (which can be made from any form of tobacco (including reconstituted).
- a smoking article e.g., a cigarette, e.g., a tobacco heating product, e.g., a HNB product
- a mouthpiece e.g., a tobacco heating product, e.g., a HNB product
- filter element e.g., a multi-segment filter as herein described and claimed below joined at one end to a wrapped tobacco rod (e.g., by conventional means, i.e., by a tipping paper).
- a smoking article according to the invention comprises a filter according to the invention including a 9 mm flute section at one end of the filter and a 18 mm bar section as the remaining length of the filter, joined at the fluted end to a wrapped tobacco rod (i.e., by a tipping paper).
- a smoking article according to the invention comprises a filter according to the invention including a 9 mm flute section at one end of the filter and a 18 mm bar section as the remaining length of the filter, joined at the bar end to a wrapped tobacco rod (i.e., by a tipping paper).
- the end appearance of the smoking article will appear differently to the consumer depending on whether the fluted end or the bar end is joined to the wrapped tobacco rod and consequently whether the fluted end or the bar end is at the mouth-end of the smoking article and is therefore, visible.
- the applicants have found that by arranging a fluted section (as opposed to a bar section) at the mouth-end of a smoking article the consumer may be provided with a unique end appearance that is visually appealing and may help in combating counterfeiting.
- arranging a bar section at the mouth-end of a smoking article may give the impression of a standard single segment (i.e., mono-paper) filter.
- a mouthpiece, filter or filter element comprising the steps of:
- the first wrapper may be a sheet, embossed to provide a profiled surface, such that it has longitudinally extending corrugations (e.g., grooves and ridges) along regular sections of its length.
- corrugations e.g., grooves and ridges
- the first wrapper is embossed uniformly so as to provide grooves of uniform depth and width over their longitudinal extent.
- the depth of the grooves may be from 0.5 mm to 2.6 mm, for example from 0.8 to 2.2 mm, for example from 1.3 to 2.1 mm, preferably from 1.35 to 2 mm, for example from 1.4 to 1.9 mm.
- the width (e.g. maximum width) of each groove may be from 1.0 to 3.0 mm, for example from 1.3 to 2.1 mm, preferably from 1.35 to 2 mm, for example from 1.4 to 1.9 mm.
- the first wrapper may have an embossed (e.g., corrugated) portion and a non-profiled (i.e., flat) portion.
- embossed and flat portions may be alternating and may be of the same or different length.
- the corrugated portion of the first wrapper may define atleast with the second wrapper the channels extending longitudinally of the core (i.e., the fluted portion) while the flat portion of the first wrapper may not define channels [at least with the second wrapper] in the length of the core which the flat portion of the wrapper engages around (i.e., the bar portion).
- the corrugated and flat portions of the first wrapper may define at least with the second wrapper, the fluted and bar regions, respectively, of the individual mouthpiece, filter or filter element (i.e., after cutting).
- the continuous core of paper or other biodegradable (e.g., non cellulose acetate containing) filtering material may be cut axially at any position along the continuous core to form individual mouthpieces or filter elements. It will be appreciated that the cut ends form the upstream end of the mouthpiece, filter or filter element and the downstream end of the mouthpiece, filter or filter element.
- the continuous core is cut through a fluted or bar portion or between a fluted or bar portion will dictate the length and arrangement of the mouthpiece, filter or filter element (i.e., flute-bar, i.e., flute-bar-flue, i.e., flute, i.e., bar-flute-bar).
- paper or other biodegradable (e.g., non-cellulose acetate containing) filtering material, first wrapper, second wrapper and channel dimensions described above etc. may be used in the method of making a mouthpiece, filter or filter element.
- a mouthpiece, filter or filter element obtained by the method as herein described and claimed below.
- Figure 1 shows a mouthpiece, filter or filter element 100 which is of length 27 mm and circumference 24 mm.
- the mouthpiece, filter or filter element 100 comprises a longitudinally extending core 101 of standard paper filtering material of length 27 mm, a first wrapper 102 of paper of 80 gsm engaged around the peripheral surface of the core 101 and a second wrapper 103 of paper of 100 gsm engaged around the first wrapper 102.
- the first wrapper 102 defines at least with the second wrapper 103 sixteen channels 104 of depth 1.5 mm, width 1.2 mm and length 9 mm, extending longitudinally from the upstream end of the mouthpiece, filter or filter element 101 (i.e., the fluted portion).
- the total cross-sectional area of these channels is 6.1% of the overall cross-sectional area of the mouthpiece, filter or filter element.
- the remaining 18 mm of length of mouthpiece, filter or filter element 100 does not include channels within its cross-section (i.e., the bar portion).
- the mouthpiece, filter or filter element 100 may be made by using techniques known in the art by a method comprising the steps of:
- FIG. 2 shows mouthpiece, filter or filter element 200 which is of length 27 mm and circumference 24 mm.
- the mouthpiece, filter or filter element 200 comprises a longitudinally extending core 201 of standard paper filtering material of length 27 mm, a first wrapper 202 of paper of 80 gsm engaged around the peripheral surface of the core 201 and a second wrapper 203 of paper of 100 gsm engaged around the first wrapper 202.
- the first wrapper 202 defines at least with the second wrapper 203 sixteen channels 204 of depth 1.2 mm, width 1.8 mm and length 27 mm, extending longitudinally along the full length of the core 201.
- the total cross-sectional area of these channels is 4.5% of the overall cross-sectional area of the mouthpiece, filter or filter element.
- the method for making mouthpiece, filter or filter element 100 described above may be used to make mouthpiece, filter or filter element 200.
- the first wrapper is only embossed, such that it has longitudinally extending corrugations (e.g., grooves and ridges) along regular sections of its length, and does not include a non-profiled (i.e., flat) portion.
- FIG. 3 shows mouthpiece, filter or filter element 300 which is of length 27 mm and circumference 24 mm.
- the mouthpiece, filter or filter element 300 comprises a longitudinally extending core 301 of standard paper filtering material of length 27 mm, a first wrapper 302 of paper of 80 gsm engaged around the peripheral surface of the core 301 and a second wrapper 303 of paper of 100 gsm engaged around the first wrapper 302.
- the first wrapper 302 defines at least with the second wrapper 303 sixteen channels 304 of depth 1.35 mm, width 1.35 mm and length 9 mm, extending longitudinally from the upstream end of the mouthpiece, filter or filter element 300 and 12 channels 304 of depth 1.35 mm, width 1.35 mm and length 9 mm, extending longitudinally from the downstream end of the mouthpiece, filter or filter element 300.
- the total cross-sectional area of these channels is 4.8% of the overall cross-sectional area of the mouthpiece, filter or filter element.
- the remaining 9 mm of length of mouthpiece, filter or filter element 300 does not include channels within its cross-section (i.e., the bar portion).
- the method for making mouthpiece, filter or filter element 100 described above may be used to make mouthpiece, filter or filter element 300.
- the continuous core is cut through the embossed portion of the first wrapper, so the cut ends form the fluted upstream and downstream ends of the mouthpiece, filter or filter element 300.
- FIG. 4 shows mouthpiece, filter or filter element 400 which is of length 27 mm and circumference 24 mm.
- the mouthpiece, filter or filter element 400 comprises a longitudinally extending core 401 of standard paper filtering material of length 27 mm, a first wrapper 402 of paper of 80 gsm engaged around the peripheral surface of the core 401 and a second wrapper 403 of paper of 100 gsm engaged around the first wrapper 402.
- the first wrapper 402 defines at least with the second wrapper 403 sixteen channels 404 of depth 1.35 mm, width 1.35 mm and length 7 mm which do not extend from either the upstream or downstream ends of the mouthpiece, filter or filter element 400.
- the total cross-sectional area of these channels is 4.8% of the overall cross-sectional area of the mouthpiece, filter or filter element.
- the two remaining 7 mm lengths of mouthpiece, filter or filter element 400 on either side of the 7 mm fluted portion do not include channels within their cross-section (i.e., the bar portions).
- the method for making mouthpiece, filter or filter element 100 described above may be used to make mouthpiece, filter or filter element 400.
- the continuous core is cut through the non-profiled (i.e., flat) portion of the first wrapper, so the cut ends form the bar upstream and downstream ends of the mouthpiece, filter or filter element 400.
- the mouthpieces, filters or filter elements 100, 200, 300 and 400 may be used in a multi-segment filter as a single segment with one or more discrete further segments. Further, it will be appreciated that the mouthpieces, filters or filter elements 100, 200, 300 and 400 or multi-segment filter comprising 100, 200, 300 or 400 may be joined at one end to a wrapped tobacco rod for use as 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.
- Filter A of the invention was made by the method described above. The filter was tested against a conventional paper filter (i.e., mono-paper) and a conventional cellulose acetate filter (i.e., mono-acetate).
- a conventional paper filter i.e., mono-paper
- a conventional cellulose acetate filter i.e., mono-acetate
- Filter A a mono-paper filter and a mono-acetate filter were assembled for smoke testing by joining each filter at one end to a wrapped tobacco rod to form a cigarette. The mouth-end of each cigarette was then inserted into a smoking machine, configured to smoke the cigarettes. The experiment was performed at standard room temperature and humidity.
- the amount of phenol in the smoke of the cigarette comprising Filter A is lower (30.8 mg/cigarette) than the amount of phenol in the smoke of the cigarette comprising a mono-paper filter (34.7 mg/cigarette).
- filters of the invention are able to reduce the amount of phenol by up to 12% compared to a mono-paper filter.
- Filter A the mono-paper filter and the mono-acetate filter were assembled for sensory testing by joining each filter at one end to a wrapped tobacco rod to form a cigarette.
- the preliminary smoke panel results suggest that mouthpieces, filters or filter elements of the invention may improve smoothness compared to mono-paper and mono-acetate filters.
- biodegradability of the paper filtering material and/or other biodegradable (e.g., non-cellulose acetate containing) filtering material used in mouthpieces, filter or filter elements of the present invention was compared with the biodegradability of known cellulose acetate filters and filters containing cellulose acetate.
- 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 conventional cellulose acetate (CA) filter rod when tested according to the method of lSO14855-1. 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.
- the paper filtering material and/or other biodegradable filtering material used in mouthpieces or filter elements of the present invention degrade faster and more extensively than cellulose acetate.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Filtering Materials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB2116870.3A GB202116870D0 (en) | 2021-11-23 | 2021-11-23 | Paper filter |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4183273A1 true EP4183273A1 (fr) | 2023-05-24 |
Family
ID=78957484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21216337.2A Pending EP4183273A1 (fr) | 2021-11-23 | 2021-12-21 | Filtre de papier |
Country Status (4)
Country | Link |
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EP (1) | EP4183273A1 (fr) |
CN (1) | CN220557411U (fr) |
GB (1) | GB202116870D0 (fr) |
WO (1) | WO2023094439A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201213786D0 (en) * | 2012-08-01 | 2012-09-12 | Filtrona Filter Prod Dev Co | Tobacco smoke filter |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2118819A (en) * | 1982-04-08 | 1983-11-09 | Filtrona Ltd | Cigarette filter |
CN101448416A (zh) * | 2006-05-22 | 2009-06-03 | 菲尔特隆纳国际有限公司 | 烟草烟雾过滤咀 |
WO2012123702A1 (fr) * | 2011-03-16 | 2012-09-20 | Filtrona Filter Products Development Co.Pte. Ltd | Filtre pour fumée de tabac |
WO2013124475A1 (fr) * | 2012-02-23 | 2013-08-29 | Filtrona Filter Products Development Co. Pte. Ltd | Filtre à fumée de tabac |
-
2021
- 2021-11-23 GB GBGB2116870.3A patent/GB202116870D0/en not_active Ceased
- 2021-12-21 EP EP21216337.2A patent/EP4183273A1/fr active Pending
-
2022
- 2022-11-23 CN CN202223150482.8U patent/CN220557411U/zh active Active
- 2022-11-23 WO PCT/EP2022/082959 patent/WO2023094439A1/fr unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2118819A (en) * | 1982-04-08 | 1983-11-09 | Filtrona Ltd | Cigarette filter |
CN101448416A (zh) * | 2006-05-22 | 2009-06-03 | 菲尔特隆纳国际有限公司 | 烟草烟雾过滤咀 |
WO2012123702A1 (fr) * | 2011-03-16 | 2012-09-20 | Filtrona Filter Products Development Co.Pte. Ltd | Filtre pour fumée de tabac |
WO2013124475A1 (fr) * | 2012-02-23 | 2013-08-29 | Filtrona Filter Products Development Co. Pte. Ltd | Filtre à fumée de tabac |
Non-Patent Citations (1)
Title |
---|
HÖLTER DIRK ET AL: "New Aspects of Cellulose Acetate Biodegradation", 9 October 2017 (2017-10-09), pages 1 - 19, XP055967560, Retrieved from the Internet <URL:https://www.coresta.org/sites/default/files/abstracts/2017_ST13_Holter.pdf> [retrieved on 20221004] * |
Also Published As
Publication number | Publication date |
---|---|
CN220557411U (zh) | 2024-03-08 |
GB202116870D0 (en) | 2022-01-05 |
WO2023094439A1 (fr) | 2023-06-01 |
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