US20240381929A1 - A cooling element - Google Patents

A cooling element Download PDF

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Publication number
US20240381929A1
US20240381929A1 US18/684,566 US202218684566A US2024381929A1 US 20240381929 A1 US20240381929 A1 US 20240381929A1 US 202218684566 A US202218684566 A US 202218684566A US 2024381929 A1 US2024381929 A1 US 2024381929A1
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United States
Prior art keywords
cooling element
longitudinally extending
substrate
additive
cooling
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Pending
Application number
US18/684,566
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English (en)
Inventor
Naqib AHMED
Ni Gusti Nyoman ALIT
Boby ALEXANDER
Arief RAHMAN
Sudirman Widiarto
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Filtrona Development Co Pte Ltd
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Filtrona Development Co Pte Ltd
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Publication of US20240381929A1 publication Critical patent/US20240381929A1/en
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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
    • 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
    • A24D3/06—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 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

Definitions

  • the present invention provides a cooling element for use with a smoking article such as a tobacco heating product or a heat-not-burn product.
  • Tobacco heating products or heat-not-burn (HNB) products are well known.
  • the idea of a tobacco heating product is that the tobacco is heated to a specific temperature (such as 350° C.) without burning. This delivers a vapour containing nicotine but it is believed that heating without burning avoids creation of combustion products that are harmful to the consumer.
  • Tobacco heating products or HNB products may include a plug of modified tobacco and other mouthpiece components which are wrapped in a paper plugwrap so as to provide a cigarette-like appearance.
  • a reconstituted tobacco plug, a wrapped hollow acetate tube, a wrapped plug of PLA [poly (lactic acid)] and a conventional wrapped acetate segment are wrapped in a white paper.
  • the product may then be inserted into a heating element which heats the tobacco so the product can then be “smoked” by the consumer.
  • the function of the “filter” in these products is very different from that of a cigarette filter; the main functions are to provide the look and feel of a cigarette and also to cool the vapour down to an acceptable temperature for the consumer.
  • HNB product e.g., a cooling element
  • a cooling element that provide acceptable cooling of the vapour in a HNB product and acceptable filtration properties (particularly in relation to phenols). It is also desirable for the HNB product to have a consistent and/or predictable cooling effect to provide the required temperature reduction of the vapour.
  • a cooling element e.g., a cooling element for a tobacco heating product and/or HNB product
  • a longitudinally extending substrate e.g., cylindrical, e.g., tubular
  • the longitudinally extending substrate including an additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate, wherein the additive is selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • cooling element refers to a discrete segment which provides a significant cooling function i.e., lowering the temperature of the vapour as it passes along the length of the element.
  • the cooling element may also provide a significant filtering function i.e., filtering the vapour as it passes along the length of the element.
  • the amount of additive in the cooling element is calculated as a percentage of the total weight of the substrate and additive via the general equation presented below.
  • An example calculation has been presented in Example 1 wherein the substrate includes an amount of additive which is 9% vegetable glycerin by total weight of the substrate and additive.
  • Percentage ⁇ of ⁇ additive ⁇ % amount ⁇ of ⁇ additive ⁇ ( g ) amount ⁇ of ⁇ addivitve ⁇ ( g ) + amount ⁇ of ⁇ substrate ⁇ ( g ) ⁇ 100
  • a cooling element which comprises a longitudinally extending substrate including an additive can provide superior cooling of the vapour.
  • the applicants have found that by including an additive and varying the amount of additive they are able tailor the cooling effect to provide the required temperature reduction and acceptable filtration properties (e.g., particularly in relation to phenols).
  • the cooling element has an amount of additive present that is from 3% to 12% by total weight of the substrate. In another example, the cooling element has an amount of additive present that is from 6% to 10.5% by total weight of the substrate.
  • the temperature of the vapour may be lowered by more than 10° C. as it is drawn through a cooling element according to the invention. In another example, the temperature of the vapour may be lowered by more than 20° C. as it is drawn through a cooling element according to the invention.
  • phenols e.g., phenolic compounds
  • an additive may provide optimal cooling characteristics and may increase the filtration efficiency (e.g., in relation to phenols) whilst delivering nicotine in an acceptable amount for the consumer.
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate may be made from natural or synthetic filamentary tow (e.g., cotton, e.g., plastics such as polyethylene or polypropylene or cellulose acetate).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate may be made from natural or synthetic staple fibres, cotton wool, non-woven materials or web material such as paper (e.g., creped paper, e.g., cellulose based embossed paper).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate is made from cellulose acetate (e.g., crimped cellulose acetate fibres, e.g., a mono-acetate filter).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate is thermoformed from cellulose acetate.
  • the cellulose acetate may further comprise plasticiser (e.g., triacetin, triethyleneglycol diacetate (TEGDA) or polyethylene glycol (PEG) or other plasticiser, or a mixture of plasticisers).
  • the length of the cooling element is from 5 to 50 mm (e.g., from 10 to 30 mm, e.g., 8 to 24 mm, e.g., 15 to 20 mm, e.g., 18 mm).
  • the circumference of the cooling element is from 12 to 30 mm (e.g., 15 to 28 mm), more preferably from 17 to 25 mm (e.g., 18 to 25 mm, e.g., 20 to 24 mm, e.g., 22 to 24 mm, e.g., 23 mm, e.g., 22 mm).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • uniform axial cross section e.g., circular, e.g., annular
  • the cooling element e.g., a cooling element for a tobacco heating product and/or HNB product
  • the cooling element of the present invention may be any shape.
  • the cooling element may have an annular cross section or an oval cross section or a square cross section or a rectangular cross section.
  • the cooling element (e.g., a cooling element for a tobacco heating product and/or HNB product) may further comprise an outer wrapper engaged around the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper).
  • the longitudinally extending substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper.
  • the outer wrapper may be a paper (e.g., plugwrap), preferably a paper (e.g., plugwrap) of basis weight 20 to 160 gsm, for example a paper (e.g., plugwrap) of basis weight 24 to 150 gsm, for example a paper (e.g., plugwrap) of basis weight 70 to 150 gsm, for example a paper (e.g., plugwrap) of basis weight 70 to 140 gsm.
  • a paper e.g., plugwrap
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the one or plurality of longitudinally extending bore(s) (or hole(s)) may extend longitudinally through the full length of the longitudinally extending substrate (and may be open at one or both ends of the substrate).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate may have a profiled outer surface including a plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels.
  • the plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels may extend the full length of the (outer surface of the) longitudinally extending substrate.
  • the plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels may not extend the full length of the (outer surface of the) longitudinally extending substrate.
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate may have one, or a plurality of, longitudinally extending bore(s) (or hole(s)) and may have a profiled outer surface including a plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels.
  • a cooling element e.g., a cooling element for a tobacco heating product and/or HNB product
  • a longitudinally extending substrate e.g., cylindrical, e.g., tubular
  • the longitudinally extending substrate including a cooling additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate.
  • cooling additive refers to an additive (e.g., a cooling agent) which performs a significant cooling function i.e., lowering the temperature of the vapour as it passes along the length of the element.
  • the amount of cooling additive in the cooling element is calculated as a percentage of the total weight of the substrate and cooling additive by total weight of the substrate. It will be appreciated that the same equation for calculating the amount of additive in the cooling element (as set out above) can be used to calculate the amount of cooling additive in the cooling element.
  • a cooling element which comprises a longitudinally extending substrate including an additive can provide superior cooling of the vapour.
  • the applicants have found that by including an additive and varying the amount of additive they are able tailor the cooling effect to provide the required temperature reduction and acceptable filtration properties (e.g., particularly in relation to phenols).
  • the temperature of the vapour may be lowered by more than 10° C. as it is drawn through a cooling element according to the invention. In another example, the temperature of the vapour may be lowered by more than 20° C. as it is drawn through a cooling element according to the invention.
  • phenols e.g., phenolic compounds
  • an additive may provide optimal cooling characteristics and may increase the filtration efficiency (e.g., in relation to phenols) whilst delivering nicotine in an acceptable amount to the consumer.
  • the cooling additive may be selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • the cooling element has an amount of cooling additive present that is from 3% to 12% by total weight of the substrate. In another example, the cooling element has an amount of cooling additive present that is from 6% to 10.5% by total weight of the substrate.
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate may be made from natural or synthetic filamentary tow (e.g., cotton, e.g., plastics such as polyethylene or polypropylene or cellulose acetate).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate may be made from natural or synthetic staple fibres, cotton wool, non-woven materials or web material such as paper (e.g., creped paper, e.g., cellulose based embossed paper).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate is made from cellulose acetate (e.g., crimped cellulose acetate fibres, e.g., a mono-acetate filter).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate is thermoformed from cellulose acetate.
  • the cellulose acetate may further comprise plasticiser (e.g., triacetin, triethyleneglycol diacetate (TEGDA) or polyethylene glycol (PEG) or other plasticiser, or a mixture of plasticisers).
  • the length of the cooling element is from 5 to 50 mm (e.g., from 10 to 30 mm, e.g., 8 to 24 mm, e.g., 15 to 20 mm, e.g., 18 mm).
  • the circumference of the cooling element is from 12 to 30 mm (e.g., 15 to 28 mm), more preferably from 17 to 25 mm, (e.g., 18 to 25 mm, e.g., 20 to 24 mm, e.g., 22 to 24 mm, e.g., 23 mm, e.g., 22 mm).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • uniform axial cross section e.g., circular, e.g., annular
  • the cooling element e.g., a cooling element for a tobacco heating product and/or HNB product
  • the cooling element of the present invention may be any shape.
  • the cooling element may have an annular cross section or an oval cross section or a square cross section or a rectangular cross section.
  • the cooling element (e.g., a cooling element for a tobacco heating product and/or HNB product) may further comprise an outer wrapper engaged around the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper).
  • the longitudinally extending substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper.
  • the outer wrapper may be a paper (e.g., plugwrap), preferably a paper (e.g., plugwrap) of basis weight 20 to 160 gsm, for example a paper (e.g., plugwrap) of basis weight 24 to 150 gsm, for example a paper (e.g., plugwrap) of basis weight 70 to 150 gsm, for example a paper (e.g., plugwrap) of basis weight 70 to 140 gsm.
  • a paper e.g., plugwrap
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the one or plurality of longitudinally extending bore(s) (or hole(s)) may extend longitudinally through the full length of the longitudinally extending substrate (and may be open at one or both ends of the substrate).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate may have a profiled outer surface including a plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels.
  • the plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels may extend the full length of the (outer surface of the) longitudinally extending substrate.
  • the plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels may not extend the full length of the (outer surface of the) longitudinally extending substrate.
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate may have one, or a plurality of, longitudinally extending bore(s) (or hole(s)) and may have a profiled outer surface including a plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels.
  • a cooling element e.g., a cooling element for a tobacco heating product and/or HNB product
  • a longitudinally extending substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate including an additive, wherein the additive is selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • the amount of additive in the cooling element may be from 3% to 12% by total weight of the substrate (e.g., from 6% to 10.5% by total weight of the substrate).
  • the amount of additive in the cooling element is calculated as a percentage of the total weight of the substrate by total weight of the substrate. It will be appreciated that the same equation for calculating the amount of additive in the substrate (as set out above) can be used to calculate the amount of cooling additive in the substrate.
  • a cooling element which comprises a longitudinally extending substrate including an additive can provide superior cooling of the vapour.
  • the applicants have found that by including an additive and varying the amount of additive they are able tailor the cooling effect to provide the required temperature reduction and acceptable filtration properties (e.g., particularly in relation to phenols).
  • the cooling element has an amount of additive present that is from 3% to 12% by total weight of the substrate. In another example, the cooling element has an amount of additive present that is from 6% to 10.5% by total weight of the substrate.
  • the temperature of the vapour may be lowered by more than 10° C. as it is drawn through a cooling element according to the invention. In another example, the temperature of the vapour may be lowered by more than 20° C. as it is drawn through a cooling element according to the invention.
  • phenols e.g., phenolic compounds
  • an additive may provide optimal cooling characteristics and may increase the filtration efficiency (e.g., in relation to phenols) whilst delivering nicotine in an acceptable amount to the consumer.
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate may be made from natural or synthetic filamentary tow (e.g., cotton, e.g., plastics such as polyethylene or polypropylene or cellulose acetate).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate may be made from natural or synthetic staple fibres, cotton wool, non-woven materials or web material such as paper (e.g., creped paper, e.g., cellulose based embossed paper).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate is made from cellulose acetate (e.g., crimped cellulose acetate fibres, e.g., a mono-acetate filter).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate is thermoformed from cellulose acetate.
  • the cellulose acetate may further comprise plasticiser (e.g., triacetin, triethyleneglycol diacetate (TEGDA) or polyethylene glycol (PEG) or other plasticiser, or a mixture of plasticisers).
  • the length of the cooling element is from 5 to 50 mm (e.g., from 10 to 30 mm, e.g., 8 to 24 mm, e.g., 15 to 20 mm, e.g., 18 mm).
  • the circumference of the cooling element is from 12 to 30 mm (e.g., 15 to 28 mm), more preferably from 17 to 25 mm, (e.g., 18 to 25 mm, e.g., 20 to 24 mm, e.g., 22 to 24 mm, e.g., 23 mm, e.g., 22 mm).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • uniform axial cross section e.g., circular, e.g., annular
  • the cooling element e.g., a cooling element for a tobacco heating product and/or HNB product
  • the cooling element of the present invention may be any shape.
  • the cooling element may have an annular cross section or an oval cross section or a square cross section or a rectangular cross section.
  • the cooling element (e.g., a cooling element for a tobacco heating product and/or HNB product) may further comprise an outer wrapper engaged around the longitudinally extending (e.g., cylindrical, e.g., tubular) (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper).
  • longitudinally extending e.g., cylindrical, e.g., tubular
  • cellulose acetate e.g., a non-woven material, e.g., paper
  • the outer wrapper may be a paper (e.g., plugwrap), preferably a paper (e.g., plugwrap) of basis weight 20 to 160 gsm, for example a paper (e.g., plugwrap) of basis weight 24 to 150 gsm, for example a paper (e.g., plugwrap) of basis weight 70 to 150 gsm, for example a paper (e.g., plugwrap) of basis weight 70 to 140 gsm.
  • a paper e.g., plugwrap
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the one or plurality of longitudinally extending bore(s) (or hole(s)) may extend longitudinally through the full length of the longitudinally extending substrate (and may be open at one or both ends of the substrate).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate may have a profiled outer surface including a plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels.
  • the plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels may extend the full length of the (outer surface of the) longitudinally extending substrate.
  • the plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels may not extend the full length of the (outer surface of the) longitudinally extending substrate.
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate may have one, or a plurality of, longitudinally extending bore(s) (or hole(s)) and may have a profiled outer surface including a plurality of (e.g., longitudinally extending) (e.g., C-shaped or U-shaped) grooves or channels.
  • a cooling element for a tobacco heating product and/or HNB product comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper), the longitudinally extending substrate including an additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate, wherein the additive is selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • a longitudinally extending substrate e.g., cylindrical, e.g., tubular
  • the longitudinally extending substrate including an additive in an amount from 3% to 12% (e.g., from 6% to 10.5%)
  • a cooling element for a tobacco heating product and/or HNB product comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper), the longitudinally extending substrate including a cooling additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate.
  • a longitudinally extending substrate e.g., cylindrical, e.g., tubular
  • a cooling additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate.
  • a cooling element for a tobacco heating product and/or HNB product comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper), the longitudinally extending substrate including an additive, wherein the additive is selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • a longitudinally extending substrate e.g., cylindrical, e.g., tubular
  • the additive is selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene
  • the cooling element may be used in any multi-segment filter or consumable.
  • the filter construction could be two, three, four or more discrete segments.
  • the discrete further segments may be (e.g., cylindrical) plugs of tobacco smoke filtering material (e.g., cellulose acetate tow) and/or a hollow (e.g., acetate) tube and/or a wrapped (e.g., cylindrical) plug of PLA.
  • the filter may be attached to a tobacco rod (which can be made from any form of tobacco (including reconstituted)).
  • the filter may include other segments that include capsules, carbon, CPS, tubes, acetate, paper, menthol etc.
  • a smoking article e.g., tobacco heating product, HNB product
  • a cooling element as herein described and claimed below.
  • the smoking article may comprise one or more discrete further segments (e.g., of a HNB mouthpiece).
  • the discrete further segments may be (e.g., cylindrical) plugs of tobacco smoke filtering material (e.g., cellulose acetate tow), a (e.g., cylindrical) rod of tobacco (e.g., any form of tobacco (including reconstituted tobacco)), a wrapped (e.g., cylindrical) plug of PLA, a hollow (e.g., acetate) tube etc.
  • a tobacco heating product and/or HNB product comprising a cooling element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper), the longitudinally extending substrate including an additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate, wherein the additive is selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • a longitudinally extending substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate including an additive in an amount from
  • a tobacco heating product and/or HNB product comprising a cooling element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper), the longitudinally extending substrate including a cooling additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate.
  • a longitudinally extending substrate e.g., cylindrical, e.g., tubular
  • a cooling additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate.
  • a tobacco heating product and/or HNB product comprising a cooling element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper), the longitudinally extending substrate including an additive, wherein the additive is selected from (i) propylene glycol (e.g. PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • a longitudinally extending substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate including an additive, wherein the additive is selected from (i) propylene glycol (e.g. PEG 400), (ii) vegetable glycer
  • the tobacco heating product and/or HNB product according to the present invention further comprises one or more discrete further segments (e.g., of a HNB mouthpiece).
  • the discrete further segments may be (e.g., cylindrical) plugs of tobacco smoke filtering material (e.g., cellulose acetate tow), a (e.g., cylindrical) rod of tobacco (e.g., any form of tobacco (including reconstituted tobacco)), a wrapped (e.g., cylindrical) plug of PLA, a hollow (e.g., acetate) tube etc.
  • a cooling element which comprises a longitudinally extending substrate including an additive, optionally together with other components (e.g., other discrete segments) of a HNB mouthpiece, can provide superior cooling of the vapour.
  • the applicants have found that by including an additive and varying the amount of additive they are able tailor the cooling effect to provide the required temperature reduction and acceptable filtration properties (e.g., particularly in relation to phenols).
  • the applicants have found that the inclusion of an additive may provide optimal cooling characteristics and may increase the filtration efficiency (e.g., in relation to phenols) whilst delivering nicotine in an acceptable amount to the consumer.
  • a cooling element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper), the longitudinally extending substrate including an additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate, wherein the additive is selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • a longitudinally extending substrate e.g., cylindrical, e.g., tubular
  • the longitudinally extending substrate including an additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate, wherein the additive is
  • a cooling element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper), the longitudinally extending substrate including a cooling additive in an amount from 3% to 12% (e.g., from 6% to 10.5%) by total weight of the substrate.
  • a longitudinally extending substrate e.g., cylindrical, e.g., tubular
  • cellulose acetate e.g., a non-woven material, e.g., paper
  • a cooling element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) substrate (e.g., cellulose acetate, e.g., a non-woven material, e.g., paper), the longitudinally extending substrate including an additive, wherein the additive is selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • a longitudinally extending substrate e.g., cellulose acetate, e.g., a non-woven material, e.g., paper
  • the longitudinally extending substrate including an additive, wherein the additive is selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glyco
  • the tobacco heating product and/or HNB product according to the present invention further comprises one or more discrete further segments (e.g., of a HNB mouthpiece).
  • the discrete further segments may be (e.g., cylindrical) plugs of tobacco smoke filtering material (e.g., cellulose acetate tow), a (e.g., cylindrical) rod of tobacco (e.g., any form of tobacco (including reconstituted tobacco)), a wrapped (e.g., cylindrical) plug of PLA, a hollow (e.g., acetate) tube etc.
  • the cooling element may be used in any multi-segment filter or consumable.
  • the filter construction could be two, three, four or more discrete segments.
  • the discrete further segments may be (e.g., cylindrical) plugs of tobacco smoke filtering material (e.g., cellulose acetate tow) and/or a hollow (e.g., acetate) tube and/or a wrapped (e.g., cylindrical) plug of PLA.
  • the filter may be attached to a tobacco rod (which can be made from any form of tobacco (including reconstituted).
  • the filter may include other segments that include capsules, carbon, CPS, tubes, acetate, paper, menthol etc.
  • a cooling element which comprises a longitudinally extending substrate including an additive, optionally together with other components (e.g., other discrete segments) of a HNB mouthpiece, can provide superior cooling of the vapour.
  • the applicants have found that by including an additive and varying the amount of additive they are able tailor the cooling effect to provide the required temperature reduction and acceptable filtration properties (e.g., particularly in relation to phenols).
  • the applicants have found that the inclusion of an additive may provide optimal cooling characteristics and may increase the filtration efficiency (e.g., in relation to phenols) whilst delivering nicotine in an acceptable amount to the consumer.
  • the additive or cooling additive may be selected from (i) propylene glycol (e.g., PEG 400), (ii) vegetable glycerin, (iii) propylene glycol and vegetable glycerin or (iv) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • the additive or cooling additive may be (e.g. a mixture of) propylene glycol and 2-isopropyl-N,2,3-trimethylbutyramide.
  • the additive or cooling additive may be (e.g. a mixture of) 70% by weight propylene glycol and 30% by weight 2-isopropyl-N,2,3-trimethylbutyramide.
  • FIG. 1 shows a schematic view of a HNB product according to the invention which includes a cooling element according to an embodiment of the invention
  • FIG. 2 is a graphical representation of how the temperature at the mouth end of a HNB product varies as puffs are taken when the HNB product contains cooling elements A, B, C, D and E in comparison with a reference HNB product, Amber HEETS.
  • FIG. 1 illustrates a schematic view of a cylindrical HNB product 100 .
  • the HNB product 100 comprises four segments: a cylindrical plug 101 of reconstituted tobacco; a hollow acetate tube 102 ; a wrapped cylindrical plug of PLA 103 and a cylindrical cooling element 104 according to an embodiment of the present invention.
  • Plug 101 of reconstituted tobacco is 12 mm long and has a circumference of 22 mm, and forms one end of the HNB product 100 . This is the end inserted in a HNB device.
  • Such plugs of reconstituted tobacco are well known in the art. This plug is heated in use by a heating device (HNB device) to produce a vapour, as is well known in the art.
  • HNB device heating device
  • the plug 101 of reconstituted tobacco is abutted at one end to a 8 mm long hollow acetate tube 102 which is also of circumference 22 mm and has wall thickness 1.3 mm.
  • the end of the hollow acetate tube 102 opposite to the plug of reconstituted tobacco 101 is abutted to a 18 mm long wrapped cylindrical plug of PLA 103 .
  • a cylindrical cooling element 104 according to an embodiment of the present invention is abutted to the opposite end of the wrapped cylindrical plug of PLA 103 such that cylindrical cooling element 104 is positioned at the mouth end of the HNB product.
  • the cylindrical cooling element 104 is made of cellulose acetate and includes 9% vegetable glycerin (not shown) applied by methods well known in the art (e.g., by spraying the fibres).
  • the cylindrical cooling element 104 is of length 7 mm and circumference 22 mm.
  • the cylindrical plug of reconstituted tobacco 101 , hollow acetate tube 102 , wrapped cylindrical plug of PLA 103 and cylindrical cooling element 104 are further wrapped with a plugwrap (not shown) of conventional plugwrap paper (that is known in the art). This provides an external appearance similar to that of a conventional cigarette.
  • the cylindrical plug of reconstituted tobacco 101 of the HNB product 100 is inserted into a HNB device.
  • the HNB device heats the reconstituted tobacco in the manner conventional for HNB devices.
  • This produces a hot vapour which is first drawn through the hollow acetate tube 102 and then through the wrapped cylindrical plug of PLA 103 and then finally through cylindrical cooling element 104 to the smoker's mouth (i.e., the mouth end). It is believed that drawing this hot vapour through the cooling element 104 cools the vapour down to a temperature that is acceptable for the user.
  • the applicants have found that the inclusion of additives in the cooling element provides a particularly effective level of cooling, and also a remarkable extraction of phenols from the vapour. Such superior effects have not been achieved with previous cooling elements.
  • cylindrical cooling element 104 of length 7 mm and circumference 22 mm is made of cellulose acetate which includes 9% vegetable glycerin (not shown) by total weight of the cellulose acetate and vegetable glycerin.
  • the cellulose acetate used for cooling element 104 weighs 0.6 mg and contains 0.06 mg of vegetable glycerin.
  • the percentage of vegetable glycerin present by total weight of the cellulose acetate and vegetable glycerin is 9%. This has been calculated using the general equation presented earlier, to give the result below.
  • Cooling elements A, B, C, D and E of the invention were made according to methods known in the art.
  • Cooling element A comprises a longitudinally extending cylindrical substrate of cellulose acetate including 6% propylene glycol (6% PG) by total weight of the cellulose acetate and propylene glycol and is of length 7 mm and circumference 22 mm.
  • 6% PG propylene glycol
  • Cooling element B comprises a longitudinally extending cylindrical substrate of cellulose acetate including 11% propylene glycol (11% PG) by total weight of the cellulose acetate and propylene glycol and is of length 7 mm and circumference 22 mm.
  • Cooling element C comprises a longitudinally extending cylindrical substrate of cellulose acetate including 3% vegetable glycerin (3% VG) by total weight of the cellulose acetate and vegetable glycerin and is of length 7 mm and circumference 22 mm.
  • Cooling element D comprises a longitudinally extending cylindrical substrate of cellulose acetate including 9% vegetable glycerin (9% VG) by total weight of the cellulose acetate and vegetable glycerin and is of length 7 mm and circumference 22 mm.
  • Cooling element E comprises a longitudinally extending cylindrical substrate of cellulose acetate including 6% propylene glycol and 6% vegetable glycerin (6% PG 6% VG) by total weight of the cellulose acetate, vegetable glycerin and propylene glycol and is of length 7 mm and circumference 22 mm.
  • Cooling elements A, B, C, D and E were used with a wrapped cylindrical plug of PLA ( 103 in FIG. 1 ) of length 18 mm and circumference 22 mm, a hollow acetate tube ( 102 in FIG. 1 ) of length 8 mm, circumference 22 mm and wall thickness 1.3 mm and a plug of reconstituted tobacco ( 101 in FIG. 1 ) of length 12 mm and circumference 22 mm.
  • the reference HNB product Amber HEETS includes a plug of reconstituted tobacco, a hollow acetate tube, a wrapped cylindrical plug of PLA and a cylindrical plug of cellulose acetate tow in an analogous arrangement to that shown in FIG. 1 .
  • the HNB products including one of the cooling elements A, B, C, D and E, and the reference HNB product Amber HEETS were tested in conventional heating devices (HNB devices).
  • Each HNB product was inserted into a heating device.
  • the mouth end of the HNB product was inserted into a smoking machine which is configured to smoke the HNB product.
  • An IR camera was used to analyse the temperature at the mouth end of the HNB product while it is being smoked.
  • the smoking machine was configured to take a puff on the HNB product every 30 seconds, each puff being 2 seconds long.
  • the temperature at the mouth end of the HNB product was measured for each puff.
  • the experiment was performed at standard room temperature and humidity. The experiment was repeated for each HNB product including one of the cooling elements A, B, C, D, E and the reference HNB product Amber HEETS.
  • FIG. 2 illustrates the temperature at the mouth end for each puff for the HNB products comprising cooling elements A, B, C, D and E in comparison with the reference HNB product Amber HEETS.
  • the Figure shows that cooling elements A, B, C, D and E of the present invention are capable of providing a cooling effect that is better than the reference HNB product Amber HEETS, while providing an number of additional benefits e.g., reducing phenol yield, e.g., delivering nicotine in an acceptable amount to the consumer.
  • cooling elements including propylene glycol and vegetable glycerin can provide improved cooling of the vapour.
  • FIG. 2 illustrates that the mouth end temperature of a HNB product comprising a cooling element including 9% vegetable glycerin is significantly lower than the mouth end temperature than the reference HNB product Amber HEETS for each puff.
  • the highest temperature reduction is seen with cooling elements including vegetable glycerin.
  • FIG. 2 shows that cooling elements including propylene glycol, including cooling elements including propylene glycol and vegetable glycerin, also demonstrate a significant reduction in mouth end temperature with each puff compared to the conventional cooling element in the reference HNB product Amber HEETS. Further data are shown in Table 1 below.
  • cooling elements of the present invention have a consistent and/or predictable cooling effect to provide the required temperature reduction.
  • HNB devices The phenol and nicotine yields of the HNB products comprising one of the cooling elements A, B, C, D and E, and the reference HNB product Amber HEETS in conventional heating devices (HNB devices) were measured by methods well known in the art (ISO 23904:2020—Cigarettes—Determination of selected phenolic compounds in cigarette mainstream smoke with an intense smoking regime using HPLC-FLD and ISO 3308:2012 Routine analytical cigarette-smoking machine—Definitions and standard conditions). The results are illustrated in Table 1.
  • Table 1 shows the phenol yields for the HNB products comprising cooling elements A, B, C, D and E are lower than the phenol yield for the reference HNB product Amber HEETS.
  • Table 1 shows that the phenol yield of a HNB product comprising a cooling element including 9% vegetable glycerin is less than half the phenol yield of the reference HNB product Amber HEETS.
  • the phenol yield of a HNB product comprising a cooling element including 3% vegetable glycerin is significantly lower than the phenol yield for the reference HNB product Amber HEETS.
  • cooling elements including vegetable glycerin, in addition to providing superior cooling of the vapour, are particularly effective at removing (e.g., adsorbing) phenols (e.g., phenolic compounds) from the vapour as it is drawn through the cooling element.
  • phenols e.g., phenolic compounds
  • Table 1 also shows cooling elements including 6% propylene glycol demonstrate a significant reduction in phenol yield compared to the reference HNB product Amber HEETS.
  • cooling elements including propylene glycol are also effective at removing (e.g., adsorbing) phenols (e.g., phenolic compounds) from the vapour as it is drawn through the cooling element.
  • cooling elements A, B, C, D and E are capable of providing the same (or at least similar) nicotine yield of the reference HNB product Amber HEETS.
  • cooling elements of the present invention are capable of providing acceptable cooling of the vapour in a HNB product and acceptable filtration properties.
  • cooling elements of the present invention are capable of reducing phenol yield whilst delivering an acceptable amount of nicotine to the consumer.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US18/684,566 2021-08-18 2022-08-17 A cooling element Pending US20240381929A1 (en)

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WO2023021292A1 (en) 2023-02-23

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