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WO2025114325A1 - A sustainable smoking article element - Google Patents

A sustainable smoking article element Download PDF

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Publication number
WO2025114325A1
WO2025114325A1 PCT/EP2024/083692 EP2024083692W WO2025114325A1 WO 2025114325 A1 WO2025114325 A1 WO 2025114325A1 EP 2024083692 W EP2024083692 W EP 2024083692W WO 2025114325 A1 WO2025114325 A1 WO 2025114325A1
Authority
WO
WIPO (PCT)
Prior art keywords
filtering material
element according
longitudinally extending
mmwg
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
Application number
PCT/EP2024/083692
Other languages
French (fr)
Inventor
Muhamad Ilham Fadila RAMADHAN
Arief RAHMAN
Cristopher Bryon WYRICK
Derrick SHINE
Gabriel Xavier PAULING
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Filtrona Filters Ltd
Filtrona Pte Ltd
Original Assignee
Filtrona Filters Ltd
Filtrona Pte Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Filtrona Filters Ltd, Filtrona Pte Ltd filed Critical Filtrona Filters Ltd
Publication of WO2025114325A1 publication Critical patent/WO2025114325A1/en
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/067—Use of materials for tobacco smoke filters characterised by functional properties
    • A24D3/068—Biodegradable or disintegrable
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—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 sustainable hemp element for use with a smoking article.
  • an element for use in a smoking article comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp, and wherein the paper filtering material does not comprise a hydrophobic material.
  • an element refers to any discrete segment that can be used in a smoking article.
  • the element may be a cooling element or a filtration element or mouthpiece element.
  • 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 element according to the present invention may be biodegradable.
  • biodegradable refers to the filtering material and 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 filtering material comprising hemp used in the element of the present invention is “readily biodegradable” and has an enhanced biodegradability compared to cellulose acetate. Therefore, the present invention provides an element of enhanced biodegradability, and thus is more environmentally friendly and is more in line with EU legislation.
  • the phrase “readily biodegradable” refers to the filtering material and element being able to disintegrate rapidly and completely biodegrade when immersed in water.
  • the element has the ‘Ready Biodegradability’ level of biodegradability as measured according to OECD 301 B ‘Ready Biodegradability’ method (modified Sturm test), which is well known in the art.
  • the phase “readily biodegradable” will here be understood to mean ‘Ready Biodegradability’ level of biodegradability.
  • the present invention provides a number of benefits over the prior art.
  • An element according to the present invention allows for smoke constituents to be focused towards the user and for cooling of the smoke as it travels to the user.
  • An element according to the present invention also allows for improved airflow through the smoking article to the users mouth.
  • Some elements of the invention may have a distinctive end appearance which may serve as a badge of origin, indicator of flavour, or anti-counterfeit measure.
  • the element according to the present invention also may prevent embers or loose particulate matter from reaching the user’s mouth and provides a grip point for the users fingers at the end of the smoking article. Further, the element of the present invention may provide a unique visual experience for the user.
  • the paper filtering material according to the present invention may be woven or non-woven, or in the form of a coherent web of paper, or a longitudinally corrugated and/or fibrillated web of paper e.g. gathered laterally into, and held, in plug form.
  • the paper filtering material according to the present invention may be in the form of a blend of different paper materials and/or other biodegradable materials (e.g. non-cellulose acetate containing filtering materials).
  • the paper has a basis weight from 20 gsm to 200 gsm.
  • the paper may have a basis weight from 40 gsm to 180 gsm, e.g. from 60 gsm to 160 gsm, e.g. from 80 gsm to 140 gsm, e.g. from 100 gsm to 120 gsm, e.g. from 20 gsm to 60 gsm, e.g. from 30 gsm to 40 gsm.
  • the paper has a basis weight from 30 gsm to 40 gsm.
  • the paper element is manufactured by methods known in the art.
  • the paper element may be manufactured by embossing the sheet paper and then forming the embossed paper into a cylindrical core via machinery commonly used in the art.
  • the element according to the present invention has a low embossing level.
  • the paper filtering material comprising hemp according to the present invention has an amount of tetrahydrocannabinol (THC) ⁇ 0.2% with respect to the weight of the paper filtering material.
  • the length of the element is from 5 to 50 mm (e.g., from 10 to 30mm, e.g., 8 to 24 mm, e.g., 15 to 20mm, e.g., 18 mm).
  • the length of the element is from 25 mm to 35 mm.
  • the circumference of the 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) core is of uniform axial cross section (e.g., circular, e.g., annular).
  • the element e.g. a mouthpiece element for use in a cannabis smoking article or a filter element for use in a tobacco smoking article or a cooling element for use in a tobacco heating product and/or HNB product
  • the element of the present invention may be any shape.
  • the element may have an annular cross section or an oval cross section or a square cross section or a rectangular cross section.
  • the element e.g. a mouthpiece element for use in a cannabis smoking article or a filter element for use in a tobacco smoking article or a cooling element for use in a tobacco heating product and/or HNB product
  • the element may further comprise an outer wrapper engaged around the longitudinally extending (e.g., cylindrical, e.g., tubular) core.
  • 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) core may have one, or a plurality of, longitudinally extending bore(s) (or hole(s)).
  • the one or plurality of longitudinally extending bore(s) (or hole(s)) may extend longitudinally through the full length of the longitudinally extending core (and may be open at one or both ends of the core).
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) core 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 core.
  • 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 core.
  • the longitudinally extending (e.g., cylindrical, e.g., tubular) core 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.
  • the element e.g. a mouthpiece element for use in a cannabis smoking article or a filter element for use in a tobacco smoking article or a cooling element for use in a tobacco heating product and/or HNB product
  • the element may have a pressure drop across the length of the element of from 0 mmWg to 100 mmWg, for example from 5 mmWg to 100 mmWg, for example 5 mmWg to 50 mmWg (pressure drop value for individual element).
  • the element may have a longitudinally extending core which comprises one or more, for example one to six, for example two or more, for example two to six, sheets of the paper filtering material.
  • the longitudinally extending core comprises one sheet of the paper filtering material.
  • the sheet(s) of the filtering material may be gathered together in rod form and held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material.
  • the wrapper may be held in place with adhesive on a lapped seam.
  • the sheet(s) of the filtering material may be gathered together loosely in rod form and held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material.
  • the wrapper may be held in place with adhesive on a lapped seam.
  • the loose gathering provides a relatively low pressure drop across the element, for example a pressure drop of from 0 mmWg to 5 mmWg, for example 1 mmWg to 5 mmWg, for example 2 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element).
  • the sheet(s) of the filtering material may be arranged so as to form a pattern (e.g. a clover leaf shape, e.g. a cannabis leaf shape) visible at an end of the element; wherein the sheet(s) of the filtering material are held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material.
  • a wrapper e.g. paper wrapper, e.g. plugwrap
  • the wrapper may be held in place with adhesive on a lapped seam.
  • the shape provides a distinctive end appearance which may serve as a badge of origin, indicator of flavour, or anti-counterfeit measure.
  • the pattern provides a relatively low pressure drop across the element, for example a pressure drop of from 0 mmWg to 5 mmWg, for example 1 mmWg to 5 mmWg, for example 2 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element).
  • the sheet(s) of the filtering material may be gathered together in tubular form such they define a longitudinally extending bore through the longitudinally extending core; wherein the sheet(s) of the filtering material are held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material.
  • the wrapper may be held in place with adhesive on a lapped seam.
  • the tubular shape provides a distinctive end appearance which may serve as a badge of origin, indicator of flavour, or anti-counterfeit measure.
  • the hollow tube or bore provides a relatively low pressure drop across the element, for example a pressure drop of from 0 mmWg to 5 mmWg, for example 1 mmWg to 5 mmWg, for example 2 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element).
  • an element for a cannabis smoking article comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material.
  • the element is a mouthpiece element.
  • an element for a tobacco heating product and/or HNB product comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material.
  • the element is a cooling element.
  • a smoking article e.g., a cannabis smoking article or a tobacco smoking article or a tobacco heating product or a HNB product
  • an element e.g., a cannabis smoking article or a tobacco smoking article or a tobacco heating product or a HNB product
  • the element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material.
  • the smoking article may comprise one or more discrete further segments.
  • a cannabis smoking article comprising an element.
  • the element comprises a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material.
  • the element is a mouthpiece element.
  • the cannabis smoking article may comprise one or more discrete further segments.
  • a tobacco heating product and/or HNB product comprising an element.
  • the element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the filtering material does not comprise a hydrophobic material.
  • the tobacco heating product and/or HNB product may comprise one or more discrete further segments.
  • the use, in a cannabis smoking article, of an element according to the present invention comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material.
  • the element is a mouthpiece element.
  • the cannabis smoking article may comprise one or more discrete further segments.
  • the use, in a tobacco heated product and/or HNB product, of an element according to the present invention comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the filtering material does not comprise a hydrophobic material
  • the tobacco heating product and/or HNB product may comprise one or more discrete further segments.
  • the cannabis smoking article according to the present invention further comprises one or more discrete further segments.
  • the discrete further segments may be (e.g., cylindrical) plugs of tobacco smoke filtering material (e.g., cellulose acetate tow), a rod of cannabis or a tobacco/cannabis blended rod, hollow (e.g., acetate) tubes etc.
  • 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)), hollow (e.g., acetate) tubes etc.
  • 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 filter.
  • the multi-segment filter may be attached to a tobacco rod (which can be made from any form of tobacco (including reconstituted)) or a cannabis rod or a cannabis/tobacco blended rod.
  • the multi-segment filter may include other filter segments that include capsule containing filters, carbon containing filters, CPS filters, tube filters, acetate filters, paper filters, menthol containing filters etc.
  • a smoking article e.g., a cannabis smoking article or a tobacco smoking article or a tobacco heating product or a HNB product
  • a multi-segment filter attached to a tobacco rod or a cannabis rod or a tobacco/cannabis blended rod.
  • the multi-segment filter may comprise a cooling element according to the present invention and/or a mouthpiece element according to the present invention and/or a filtration element according to the present invention.
  • the multi-segment filter may further comprise a plug filter comprising a longitudinally extending core of cellulose acetate tow.
  • the multi-segment filter may further comprise a hollow acetate tube filter.
  • Figure 1 shows an element for use in a smoking article according to the present invention
  • Figures 2A, 2B, 2C and 2D show end views of additional examples of elements according to the invention for use in smoking articles according to the present invention
  • the element of Figure 1 comprises a longitudinally extending core formed from unbleached FM36 hemp paper. There is an outer plug wrap wrapper engaged around the longitudinally extending core which has a basis wight of 78 gsm.
  • the element of Figure 2A comprises a longitudinally extending core formed from unbleached FM36 hemp paper.
  • the longitudinally extending core comprises one sheet of the paper filtering material (unbleached FM36 hemp paper) which are gathered together in rod form and held in place by a wrapper (paper plugwrap of basis weight 78 gsm) engaged around the sheet(s) of the filtering material.
  • the wrapper is held in place by adhesive on a lapped seam.
  • the paper provides a relatively high density element.
  • the element of Figure 2B comprises a longitudinally extending core formed from unbleached FM36 hemp paper.
  • the longitudinally extending core comprises one sheet of the paper filtering material (unbleached FM36 hemp paper) which is gathered together loosely in rod form and held in place by a wrapper (paper plugwrap of basis weight 78 gsm) engaged around the sheet of the filtering material. The wrapper is held in place by adhesive on a lapped seam.
  • the paper provides a relatively low density filter.
  • the pressure drop across the loosely gathered element of Figure 2B is from 2 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element). This pressure drop is lower than that of the element of Fig 2A.
  • the elements of Figure 2C each comprises a longitudinally extending core formed from unbleached FM36 hemp paper.
  • the longitudinally extending core comprises one sheet of the paper filtering material (unbleached FM36 hemp paper) which is gathered together loosely in rod form and arranged so as to form a pattern (e.g. a 4- leaf “clover”shape in the left hand element of Fig 2C; a six leaf “cannabis leaf” shape in the right hand element of Figure 2C) which is visible at the end of the element.
  • the sheet of paper filtering material is held in place by a wrapper (paper plugwrap of basis weight 78 gsm) engaged around the sheet(s) of the filtering material.
  • the wrapper is held in place by adhesive on a lapped seam.
  • the paper provides a relatively low density filter.
  • the pressure drop across the loosely gathered element of Figure 2B is from 0 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element). This pressure drop is lower than that of the element of Fig 2A.
  • the element of Figure 2D comprises a longitudinally extending core formed from unbleached FM36 hemp paper.
  • the longitudinally extending core comprises one sheet of the paper filtering material (unbleached FM36 hemp paper) which are gathered together in tubular form such that they define a longitudinally extending bore through the longitudinally extending core.
  • the sheets of paper filtering material are held in place by a wrapper (paper plugwrap of basis weight 78 gsm) engaged around the sheets of the filtering material.
  • the wrapper is held in place by adhesive on a lapped seam.
  • the paper provides a relatively low density annular filter with a hollow inner tube defining a hollow bore.
  • the pressure drop across the element of Figure 2D is around 0 mmWg, along its whole length (pressure drop value for individual element).

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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)

Abstract

The present invention provides an element for use in a smoking article, the element comprising a longitudinally extending core; wherein the longitudinally extending core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material.

Description

A SUSTAINABLE SMOKING ARTICLE ELEMENT
INTRODUCTION
The present invention provides a sustainable hemp element for use with a smoking article.
SUMMARY OF THE INVENTION
According to the present invention there is provided an element for use in a smoking article (e.g. a mouthpiece element for use in a cannabis smoking article or a filter element for use in a tobacco smoking article or a cooling element for use in a tobacco heated product and/or HNB product) comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp, and wherein the paper filtering material does not comprise a hydrophobic material.
It will be appreciated that the term “an element” as used herein refers to any discrete segment that can be used in a smoking article. The element may be a cooling element or a filtration element or mouthpiece element.
It will be appreciated that the term “cooling element” as used herein 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 element according to the present invention may be biodegradable.
The term “biodegradable” refers to the filtering material and 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).
Preferably, the paper filtering material comprising hemp used in the element of the present invention is “readily biodegradable” and has an enhanced biodegradability compared to cellulose acetate. Therefore, the present invention provides an element of enhanced biodegradability, and thus is more environmentally friendly and is more in line with EU legislation. The phrase “readily biodegradable” refers to the filtering material and element being able to disintegrate rapidly and completely biodegrade when immersed in water. Preferably the element has the ‘Ready Biodegradability’ level of biodegradability as measured according to OECD 301 B ‘Ready Biodegradability’ method (modified Sturm test), which is well known in the art. The phase “readily biodegradable” will here be understood to mean ‘Ready Biodegradability’ level of biodegradability.
The present invention provides a number of benefits over the prior art. An element according to the present invention allows for smoke constituents to be focused towards the user and for cooling of the smoke as it travels to the user. An element according to the present invention also allows for improved airflow through the smoking article to the users mouth. Some elements of the invention may have a distinctive end appearance which may serve as a badge of origin, indicator of flavour, or anti-counterfeit measure.
The element according to the present invention also may prevent embers or loose particulate matter from reaching the user’s mouth and provides a grip point for the users fingers at the end of the smoking article. Further, the element of the present invention may provide a unique visual experience for the user.
The paper filtering material according to the present invention may be woven or non-woven, or in the form of a coherent web of paper, or a longitudinally corrugated and/or fibrillated web of paper e.g. gathered laterally into, and held, in plug form. The paper filtering material according to the present invention may be in the form of a blend of different paper materials and/or other biodegradable materials (e.g. non-cellulose acetate containing filtering materials).
Preferably, the paper has a basis weight from 20 gsm to 200 gsm. For example, the paper may have a basis weight from 40 gsm to 180 gsm, e.g. from 60 gsm to 160 gsm, e.g. from 80 gsm to 140 gsm, e.g. from 100 gsm to 120 gsm, e.g. from 20 gsm to 60 gsm, e.g. from 30 gsm to 40 gsm. Preferably, the paper has a basis weight from 30 gsm to 40 gsm.
An element according to the present invention is manufactured by methods known in the art. For example, the paper element may be manufactured by embossing the sheet paper and then forming the embossed paper into a cylindrical core via machinery commonly used in the art. Preferably, the element according to the present invention has a low embossing level. Preferably, the paper filtering material comprising hemp according to the present invention has an amount of tetrahydrocannabinol (THC) <0.2% with respect to the weight of the paper filtering material.
Preferably the length of the element is from 5 to 50 mm (e.g., from 10 to 30mm, e.g., 8 to 24 mm, e.g., 15 to 20mm, e.g., 18 mm). Preferably, the length of the element is from 25 mm to 35 mm.
Preferably the circumference of the 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).
Preferably the longitudinally extending (e.g., cylindrical, e.g., tubular) core is of uniform axial cross section (e.g., circular, e.g., annular).
Preferably the element (e.g. a mouthpiece element for use in a cannabis smoking article or a filter element for use in a tobacco smoking article or a cooling element for use in a tobacco heating product and/or HNB product) has a substantially circular cross section meaning the element is substantially cylindrical in shape. However, the element of the present invention may be any shape. For example, the element may have an annular cross section or an oval cross section or a square cross section or a rectangular cross section.
The element (e.g. a mouthpiece element for use in a cannabis smoking article or a filter element for use in a tobacco smoking article or a cooling element for use in 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) core. 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.
The longitudinally extending (e.g., cylindrical, e.g., tubular) core may have one, or a plurality of, longitudinally extending bore(s) (or hole(s)). The one or plurality of longitudinally extending bore(s) (or hole(s)) may extend longitudinally through the full length of the longitudinally extending core (and may be open at one or both ends of the core).
The longitudinally extending (e.g., cylindrical, e.g., tubular) core 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 core. 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 core.
The longitudinally extending (e.g., cylindrical, e.g., tubular) core 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.
The element (e.g. a mouthpiece element for use in a cannabis smoking article or a filter element for use in a tobacco smoking article or a cooling element for use in a tobacco heating product and/or HNB product) may have a pressure drop across the length of the element of from 0 mmWg to 100 mmWg, for example from 5 mmWg to 100 mmWg, for example 5 mmWg to 50 mmWg (pressure drop value for individual element).
The element (e.g. a mouthpiece element for use in a cannabis smoking article or a filter element for use in a tobacco smoking article or a cooling element for use in a tobacco heating product and/or HNB product) may have a longitudinally extending core which comprises one or more, for example one to six, for example two or more, for example two to six, sheets of the paper filtering material. In some examples, the longitudinally extending core comprises one sheet of the paper filtering material. The sheet(s) of the filtering material may be gathered together in rod form and held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material. The wrapper may be held in place with adhesive on a lapped seam.
In some examples of the invention (see example of Fig 2B), the sheet(s) of the filtering material may be gathered together loosely in rod form and held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material. The wrapper may be held in place with adhesive on a lapped seam. The loose gathering provides a relatively low pressure drop across the element, for example a pressure drop of from 0 mmWg to 5 mmWg, for example 1 mmWg to 5 mmWg, for example 2 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element).
In some examples of the invention (see Fig 2C), the sheet(s) of the filtering material may be arranged so as to form a pattern (e.g. a clover leaf shape, e.g. a cannabis leaf shape) visible at an end of the element; wherein the sheet(s) of the filtering material are held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material. The wrapper may be held in place with adhesive on a lapped seam. The shape provides a distinctive end appearance which may serve as a badge of origin, indicator of flavour, or anti-counterfeit measure. The pattern provides a relatively low pressure drop across the element, for example a pressure drop of from 0 mmWg to 5 mmWg, for example 1 mmWg to 5 mmWg, for example 2 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element).
In some examples of the invention (see example of Fig 2D), the sheet(s) of the filtering material may be gathered together in tubular form such they define a longitudinally extending bore through the longitudinally extending core; wherein the sheet(s) of the filtering material are held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material. The wrapper may be held in place with adhesive on a lapped seam. The tubular shape provides a distinctive end appearance which may serve as a badge of origin, indicator of flavour, or anti-counterfeit measure. The hollow tube or bore provides a relatively low pressure drop across the element, for example a pressure drop of from 0 mmWg to 5 mmWg, for example 1 mmWg to 5 mmWg, for example 2 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element).
According to the present invention in a further aspect there is provided an element for a cannabis smoking article comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material. Preferably, the element is a mouthpiece element.
According to the present invention in a further aspect there is provided an element for a tobacco heating product and/or HNB product comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material. Preferably, the element is a cooling element. According to the present invention in a further aspect there is provided a smoking article (e.g., a cannabis smoking article or a tobacco smoking article or a tobacco heating product or a HNB product) comprising an element. The element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material. Optionally the smoking article may comprise one or more discrete further segments.
According to the present invention there is provided a cannabis smoking article comprising an element. The element comprises a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material. Preferably, the element is a mouthpiece element. Optionally the cannabis smoking article may comprise one or more discrete further segments.
According to the present invention there is provided a tobacco heating product and/or HNB product comprising an element. The element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the filtering material does not comprise a hydrophobic material. Optionally the tobacco heating product and/or HNB product may comprise one or more discrete further segments.
According to the present invention there is provided the use, in a cannabis smoking article, of an element according to the present invention. The element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material. Preferably, the element is a mouthpiece element. Optionally the cannabis smoking article may comprise one or more discrete further segments.
According to the present invention there is provided the use, in a tobacco heated product and/or HNB product, of an element according to the present invention. The element comprising a longitudinally extending (e.g., cylindrical, e.g., tubular) core; wherein the longitudinally extending (e.g., cylindrical, e.g., tubular) core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the filtering material does not comprise a hydrophobic material Optionally the tobacco heating product and/or HNB product may comprise one or more discrete further segments.
Preferably the cannabis smoking article according to the present invention further comprises one or more discrete further segments. The discrete further segments may be (e.g., cylindrical) plugs of tobacco smoke filtering material (e.g., cellulose acetate tow), a rod of cannabis or a tobacco/cannabis blended rod, hollow (e.g., acetate) tubes etc.
Preferably 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)), hollow (e.g., acetate) tubes etc.
It will be appreciated that the 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 filter. The multi-segment filter may be attached to a tobacco rod (which can be made from any form of tobacco (including reconstituted)) or a cannabis rod or a cannabis/tobacco blended rod. The multi-segment filter may include other filter segments that include capsule containing filters, carbon containing filters, CPS filters, tube filters, acetate filters, paper filters, menthol containing filters etc.
According to the present invention there is further provided a smoking article (e.g., a cannabis smoking article or a tobacco smoking article or a tobacco heating product or a HNB product) comprising a multi-segment filter attached to a tobacco rod or a cannabis rod or a tobacco/cannabis blended rod. The multi-segment filter may comprise a cooling element according to the present invention and/or a mouthpiece element according to the present invention and/or a filtration element according to the present invention. The multi-segment filter may further comprise a plug filter comprising a longitudinally extending core of cellulose acetate tow. The multi-segment filter may further comprise a hollow acetate tube filter. The present invention will now be described in further detail by reference to the attached Figures in which:
Figure 1 shows an element for use in a smoking article according to the present invention; and Figures 2A, 2B, 2C and 2D show end views of additional examples of elements according to the invention for use in smoking articles according to the present invention
The element of Figure 1 comprises a longitudinally extending core formed from unbleached FM36 hemp paper. There is an outer plug wrap wrapper engaged around the longitudinally extending core which has a basis wight of 78 gsm.
The element of Figure 2A comprises a longitudinally extending core formed from unbleached FM36 hemp paper. The longitudinally extending core comprises one sheet of the paper filtering material (unbleached FM36 hemp paper) which are gathered together in rod form and held in place by a wrapper (paper plugwrap of basis weight 78 gsm) engaged around the sheet(s) of the filtering material. The wrapper is held in place by adhesive on a lapped seam. As can be seen in figure 2A, the paper provides a relatively high density element.
The element of Figure 2B comprises a longitudinally extending core formed from unbleached FM36 hemp paper. The longitudinally extending core comprises one sheet of the paper filtering material (unbleached FM36 hemp paper) which is gathered together loosely in rod form and held in place by a wrapper (paper plugwrap of basis weight 78 gsm) engaged around the sheet of the filtering material. The wrapper is held in place by adhesive on a lapped seam. As can be seen in figure 2B, the paper provides a relatively low density filter. The pressure drop across the loosely gathered element of Figure 2B is from 2 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element). This pressure drop is lower than that of the element of Fig 2A.
The elements of Figure 2C each comprises a longitudinally extending core formed from unbleached FM36 hemp paper. The longitudinally extending core comprises one sheet of the paper filtering material (unbleached FM36 hemp paper) which is gathered together loosely in rod form and arranged so as to form a pattern (e.g. a 4- leaf “clover”shape in the left hand element of Fig 2C; a six leaf “cannabis leaf” shape in the right hand element of Figure 2C) which is visible at the end of the element. The sheet of paper filtering material is held in place by a wrapper (paper plugwrap of basis weight 78 gsm) engaged around the sheet(s) of the filtering material. The wrapper is held in place by adhesive on a lapped seam. Alternatively or additionally, there may be adhesive on the inner surface of the wrapper whch adheres the wrapper to the sheet of paper filtering material to hold the shape. As can be seen in figure 2C, the paper provides a relatively low density filter. The pressure drop across the loosely gathered element of Figure 2B is from 0 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element). This pressure drop is lower than that of the element of Fig 2A.
The element of Figure 2D comprises a longitudinally extending core formed from unbleached FM36 hemp paper. The longitudinally extending core comprises one sheet of the paper filtering material (unbleached FM36 hemp paper) which are gathered together in tubular form such that they define a longitudinally extending bore through the longitudinally extending core. The sheets of paper filtering material are held in place by a wrapper (paper plugwrap of basis weight 78 gsm) engaged around the sheets of the filtering material. The wrapper is held in place by adhesive on a lapped seam. As can be seen in figure 2D, the paper provides a relatively low density annular filter with a hollow inner tube defining a hollow bore. The pressure drop across the element of Figure 2D is around 0 mmWg, along its whole length (pressure drop value for individual element).

Claims

1 . An element for use in a smoking article, the element comprising a longitudinally extending core; wherein the longitudinally extending core comprises a paper filtering material; wherein the paper filtering material comprises hemp; and wherein the paper filtering material does not comprise a hydrophobic material.
2. An element according to claim 1 , wherein the element is a cooling element.
3. An element according to claim 1 , wherein the element is a mouthpiece element.
4. An element according to any preceding claim wherein the paper filtering material is readily biodegradable.
5. An element according to any preceding claim wherein the longitudinally extending core has one, or a plurality of, longitudinally extending bore(s).
6. An element according to any preceding claim wherein the length of the element is from 5 to 50 mm, e.g. 25 to 35 mm, e.g., 10 to 30mm, e.g., 8 to 24 mm, e.g., 15 to 20mm, e.g., 18 mm.
7. An element according to any preceding claim wherein the circumference of the element is from 12 mm to 30 mm, e.g., 15 mm to 28 mm, e.g., 17 mm to 25 mm.
8. An element according to any preceding claim wherein the longitudinally extending core has a profiled outer surface including a plurality of grooves or channels.
9. An element according to any preceding claim wherein the longitudinally extending core has a profiled outer surface including a plurality of grooves or channels and has one, or a plurality of, longitudinally extending bore(s).
10. An element according to any preceding claim wherein the pressure drop across the length of the element is from 0 mmWg to 100 mmWg, for example from 5 mmWg to 100 mmWg, for example 5 mmWg to 50 mmWg (pressure drop value for individual element).
11 . An element according to any preceding claim wherein the longitudinally extending core comprises one or more, for example one to six, preferably two or more, for example two to six, sheets of the paper filtering material.
12. An element according to claim 1 1 wherein the sheet(s) of the filtering material are gathered together in rod form and held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material.
13. An element according to claim 1 1 wherein the sheet(s) of the filtering material are gathered together loosely in rod form and held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material.
14. An element according to claim 1 1 or 12 wherein the sheet(s) of the filtering material are arranged so as to form a pattern (e.g. a clover leaf shape, e.g. a cannabis leaf shape) visible at an end of the element; wherein the sheet(s) of the filtering material are held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material.
15. An element according to claim 1 1 wherein the sheet(s) of the filtering material are gathered together in tubular form such they define a longitudinally extending bore through the longitudinally extending core; wherein the sheet(s) of the filtering material are held in place by a wrapper (e.g. paper wrapper, e.g. plugwrap) engaged around the sheet(s) of the filtering material.
16. An element according to any of claims 12 to 15 wherein the sheet(s) of the filtering material is/are secured within the wrapper by an adhesive.
17. An element according to any of claims 11 to 16 wherein the pressure drop across the element is from 0 mmWg to 5 mmWg, for example 1 mmWg to 5 mmWg, for example 2 mmWg to 4 mmWg, along its whole length (pressure drop value for individual element).
18. An element according to any preceding claim wherein the paper filtering material has basis weight 80 to 180 gsm, preferably 20 to 200 gsm.
19. A smoking article (e.g. a cannabis smoking article or a tobacco smoking article or a tobacco heating product or a HNB product) comprising an element according to any preceding claim and optionally one or more discrete further segments.
20. A cannabis smoking article comprising an element according to any of claims 1 to 18 and optionally one or more discrete further segments.
21 . The use, in a cannabis smoking article, of an element according to any of claims 1 to 18.
PCT/EP2024/083692 2023-11-28 2024-11-27 A sustainable smoking article element Pending WO2025114325A1 (en)

Applications Claiming Priority (2)

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US202363603399P 2023-11-28 2023-11-28
US63/603,399 2023-11-28

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018197892A1 (en) * 2017-04-28 2018-11-01 British American Tobacco (Investments) Limited Sheet of smokeable material
WO2021258134A1 (en) * 2020-06-22 2021-12-30 Malan Dimopoulos A smoking tip
WO2023079165A1 (en) * 2021-11-08 2023-05-11 Essentra Filter Products Development Co. Pte. Ltd Active paper
US20230248055A1 (en) * 2021-10-26 2023-08-10 Good Tree International, Inc. Filter having a shaped rim structure and a flavor capsule

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018197892A1 (en) * 2017-04-28 2018-11-01 British American Tobacco (Investments) Limited Sheet of smokeable material
WO2021258134A1 (en) * 2020-06-22 2021-12-30 Malan Dimopoulos A smoking tip
US20230248055A1 (en) * 2021-10-26 2023-08-10 Good Tree International, Inc. Filter having a shaped rim structure and a flavor capsule
WO2023079165A1 (en) * 2021-11-08 2023-05-11 Essentra Filter Products Development Co. Pte. Ltd Active paper

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