US20190174816A1 - Smoking article having transparent wrapper - Google Patents

Smoking article having transparent wrapper Download PDF

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Publication number
US20190174816A1
US20190174816A1 US16/307,580 US201716307580A US2019174816A1 US 20190174816 A1 US20190174816 A1 US 20190174816A1 US 201716307580 A US201716307580 A US 201716307580A US 2019174816 A1 US2019174816 A1 US 2019174816A1
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US
United States
Prior art keywords
substantially transparent
wrapper
mouthpiece
transparent wrapper
cellulose
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
US16/307,580
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English (en)
Inventor
Enrico Binassi
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.)
Philip Morris Products SA
Original Assignee
Philip Morris Products SA
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 Philip Morris Products SA filed Critical Philip Morris Products SA
Assigned to PHILIP MORRIS PRODUCTS S.A. reassignment PHILIP MORRIS PRODUCTS S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BINASSI, ENRICO
Publication of US20190174816A1 publication Critical patent/US20190174816A1/en
Pending legal-status Critical Current

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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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A24D1/025—Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/47—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces
    • A24C5/471—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces by means of a connecting band
    • A24C5/472—Applying adhesives to the connecting band
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • 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
    • 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
    • A24D3/18—Mouthpieces for cigars or cigarettes; Manufacture thereof

Definitions

  • the present invention relates to a filter for a smoking article having a substantially transparent wrapper, and a method of manufacturing such filters.
  • the present invention also relates to smoking articles incorporating such filters.
  • Filter cigarettes typically comprise a cylindrical rod of tobacco cut filler surrounded by a paper wrapper and a cylindrical filter axially aligned in an abutting end-to-end relationship with the wrapped tobacco rod.
  • the cylindrical filter typically comprises a filtration material circumscribed by a paper plug wrap.
  • the wrapped tobacco rod and the filter are joined by a band of tipping wrapper, normally formed of an opaque paper material that circumscribes the entire length of the filter and an adjacent portion of the wrapped tobacco rod.
  • a number of smoking articles in which an aerosol generating substrate, such as tobacco, is heated rather than combusted have also been proposed in the art.
  • the aerosol is generated by heating the aerosol generating substrate.
  • Known heated smoking articles include, for example, smoking articles in which an aerosol is generated by electrical heating or by the transfer of heat from a combustible fuel element or heat source to an aerosol generating substrate.
  • volatile compounds are released from the aerosol generating substrate by heat transfer from the heat source and entrained in air drawn through the smoking article. As the released compounds cool they condense to form an aerosol that is inhaled by the consumer.
  • smoking articles in which a nicotine-containing aerosol is generated from a tobacco material, tobacco extract, or other nicotine source, without combustion, and in some cases without heating, for example through a chemical reaction.
  • the wrappers of the smoking articles are typically provided such that opposed edges of each wrapper overlap with one another along a longitudinal overlapping region to form a seam.
  • An adhesive such as Polyvinyl alcohol (PVA) or a hot melt adhesive, is used to secure the opposed edges of each wrapper to one another along the seam.
  • PVA Polyvinyl alcohol
  • hot melt adhesive is used to secure the opposed edges of each wrapper to one another along the seam.
  • the seam of the substantially transparent plug wrap is formed using an adhesive, such as PVA or a hot melt adhesive
  • the seam will not be transparent and consequently is visibly discernibly from the remainder of the plug wrap. This is particularly problematic where the substantially transparent plug wrap underlies a tipping paper with a cut-out window, since registration will be required to avoid the seam being placed under the window.
  • a mouthpiece for a smoking article comprising: at least one mouthpiece element; a substantially transparent wrapper wrapped around the at least one mouthpiece element such that first and second opposed edges of the substantially transparent wrapper overlap with each other along a longitudinal overlapping region; and an agent disposed between the first and second opposed edges of substantially transparent in at least a portion of the longitudinal overlapping region; wherein the substantially transparent wrapper comprises an acetate ester of cellulose, and wherein the agent comprises an ester of glycerol.
  • the ester of glycerol of the substantially transparent wrapper is triacetin (also known as glycerol triacetate).
  • the ester of glycerol may be triethyl citrate, as an alternative or in addition to triacetin.
  • a substantially transparent seam can be obtained by using an agent, or bonding agent, comprising an ester of glycerol and a substantially transparent wrapper comprising an acetate ester of cellulose.
  • the ester of glycerol is a substantially transparent agent, and unlike conventional adhesives, interacts with the acetate ester of cellulose in the wrapper, to bond or otherwise weld the overlapping portions in the longitudinal overlapping region directly to one another. This can result in one of the overlapping edges seamlessly transitioning into the other overlapping edge in the overlapping region, rather than there being a distinct joint between the two overlapping edges, as would be the case with a conventional adhesive.
  • the overlapping region can have substantially the same appearance as the remainder of the wrapper, since it could in effect be considered to be a portion of the wrapper having the same or similar properties as the remainder of the wrapper, but being double the thickness of the remainder of the wrapper.
  • a mouthpiece for a smoking article comprising: at least one mouthpiece element; and substantially transparent sheath circumscribing the at least one mouthpiece element, wherein the substantially transparent sheath comprises an acetate ester of cellulose, and wherein the substantially transparent sheath comprises a longitudinally extending portion formed from the interaction of the acetate ester of cellulose with an ester of glycerol.
  • a mouthpiece for a smoking article comprising: at least one mouthpiece element; and substantially transparent sheath circumscribing the at least one mouthpiece element, wherein the substantially transparent sheath comprises an acetate ester of cellulose, and wherein the substantially transparent sheath comprises a longitudinally extending portion having a thickness of about two times the thickness of the remainder of the substantially transparent sheath, as measured in a radial direction of the mouthpiece.
  • the substantially transparent wrapper may be completely transparent.
  • the substantially transparent wrapper may have a lower level of transparency whilst still transmitting sufficient light so that the underlying mouthpiece segment is visible through the substantially transparent wrapper.
  • the substantially transparent wrapper may be tinted or coloured.
  • the acetate ester of cellulose is selected from the group of cellulose acetate, cellulose diacetate and cellulose triacetate. Particularly preferably, the acetate ester of cellulose is cellulose diacetate.
  • the substantially transparent wrapper may be composed of additional compounds in addition to the acetate ester of cellulose.
  • the substantially transparent wrapper consists essentially of an acetate ester of cellulose. This can help to ensure that sufficient acetate ester of cellulose is present at the surface of the substantially transparent wrapper and therefore able to react with the ester of glycerol.
  • the substantially transparent wrapper may comprise one or more layers, with at least one layer comprising an acetate ester of cellulose.
  • the substantially transparent wrapper comprises a polymeric layer, such as a layer of polyvinyl alcohol, disposed between two layers comprising an acetate ester of cellulose, such as cellulose diacetate.
  • the agent is provided in the form of a line extending along the overlapping region.
  • the line has a width of from about 0.1 millimetres to about 5 millimetres, more preferably of from about 0.5 millimetres to about 3 millimetres, even more preferably of from about 1 millimetres to about 2.5 millimetres.
  • the agent is provided in an amount of from about 0.5 milligrams to about 1.5 milligrams.
  • the mouthpiece of smoking articles in accordance with the present invention may comprise a filter including one or more segments of filtration material.
  • the mouthpiece may comprise a single segment of filtration material, or the mouthpiece may comprise a multi-segment filter including two or more segments of filtration material.
  • the filter segments may be of the same construction and materials as each other. Preferably, however, the filter segments have a different construction, and/or contain different filtration material to each other.
  • the mouthpiece comprises two or more segments of filtration material
  • at least two segments of filtration material may be spaced apart to form a cavity therebetween.
  • the cavity may be at least partially filled with a flavourant material.
  • At least one of the filter segments may include a flavourant material. This may be in addition to any flavourant material provided in a cavity when present.
  • the flavourant material is particulate flavourant material.
  • suitable particulate flavourant materials include particles of a sorbent or cellulosic material impregnated with a liquid flavourant.
  • the particulate flavourant material may comprise particles of plant leaf, as described in EP-A-1,958,523.
  • flavourant material may include leaf from tobacco, green tea, peppermint, spearmint, laurel, eucalyptus , basil, sage, verbena and tarragon.
  • portions of mint plants may also be used.
  • the term ‘mint’ refers to plants that belong to the genus Mentha .
  • the plant material may alternatively be in the form of a seed, root, bark and/or flower, such as those typically used as spices.
  • the flavourant material is provided in a capsule which is adapted to release at least a portion of a fluid when the capsule is subjected to external force, such as squeezing, by the consumer.
  • the mouthpiece may also include a particulate material that does not comprise a flavourant, such as beads or granules of a cellulosic material or an adsorbent. This may be in addition to or as an alternative to the particulate flavourant materials described above.
  • adsorbents include activated carbon, carbon beads, active aluminium, zeolites, sepiolites, molecular sieves and silica gel.
  • the filtration material is preferably a plug of fibrous filtration material, such as cellulose acetate tow or paper.
  • a filter plasticiser may be applied to the fibrous filtration material in a conventional manner, by spraying it onto the separated fibres, preferably before applying any particulate material to the filtration material.
  • the mouthpiece may include a variety of different types of filter segments or combinations of filter segments, including those described above as well as other types of filter segments that would be known to the skilled person, such as segments including restrictors and segments that are used for adjusting the resistance to draw (RTD).
  • the substantially transparent wrapper may be a plug wrap surrounding the filter material.
  • any or all of the segments may each be individually wrapped in a segment plug wrap.
  • the segments of the filter may then be subsequently attached to one another in a conventional manner using a substantially transparent wrapper, which forms a combining plug wrap.
  • at least one of the segment plug wraps is preferably transparent in addition to the combining plug wrap being transparent, and in some cases these transparent wrappers are formed from the same material.
  • the present invention advantageously enables the overlapping region to have a transparency that is close to or the same as that of the remainder of the substantially transparent wrapper. Accordingly, preferably, the transparency level of overlapping region of the substantially transparent wrapper is within 10 percent, more preferably 5 percent of the transparency level of the remainder of the substantially transparent wrapper.
  • the transparency level may be evaluated in accordance with ASTM D1003-13.
  • the thickness of the substantially transparent wrapper is preferably about 10 micrometers or more.
  • the thickness of the substantially transparent wrapper is preferably about 200 micrometers or less, more preferably about 100 micrometers or less. More preferably, the thickness of the substantially transparent wrapper is between about 25 micrometers and about 75 micrometers.
  • the basis weight of the substantially transparent wrapper is preferably at least about 15 grams per square meter (gsm). More preferably, the basis weight of the substantially transparent wrapper is between about 20 gsm and about 130 gsm.
  • the mouthpiece further comprises a paper wrapper circumscribing at least a portion of the substantially transparent wrapper.
  • a window may be provided in the paper wrapper such that an underlying mouthpiece segment can be viewed through the window and the substantially transparent wrapper. This allows a consumer to view a portion of the mouthpiece underlying the substantially transparent wrapper.
  • the paper wrapper may include a single window or multiple windows as desired. Where the paper wrapper includes multiple windows, they may be identical windows or they may have different sizes or shapes to accommodate different mouthpiece designs.
  • the window may extend around the entire circumference of the mouthpiece. However, preferably, the window extends around only a portion of the circumference of the mouthpiece.
  • the mouthpiece preferably includes a high basis weight transparent plug wrap underlying the paper wrapper and extending across the window to prevent the mouthpiece from collapsing or breaking at the window during use.
  • the basis weight of the substantially transparent plug wrap can be at least 60 gsm, preferably around 80 gsm.
  • the window preferably overlies at least a portion of the cavity so that a consumer can observe the cavity through the window and the substantially transparent layer.
  • the paper wrapper may include a window which overlies at least a portion of a filter segment which includes a particulate material so that a consumer can observe the particulate material through the window and the substantially transparent layer.
  • the paper wrapper also includes a window overlying a cavity within the mouthpiece, these may be the same window extending over both portions of the mouthpiece or they may be different windows.
  • Smoking articles in accordance with the present invention may be filter cigarettes or other smoking articles in which tobacco material is combusted to form smoke.
  • the aerosol-generating substrate may comprise a tobacco rod and the mouthpiece may comprise a filter, as described above.
  • the paper wrapper may comprise a tipping wrapper.
  • smoking articles according to the present invention may be articles in which an aerosol-generating substance, such as tobacco, is heated to form an aerosol rather than combusted.
  • an aerosol generating substance is heated by one or more electrical heating elements to produce an aerosol.
  • an aerosol is produced by the transfer of heat from a combustible or chemical heat source to a physically separate aerosol generating substrate, which may be located within, around or downstream of the heat source.
  • the present invention further encompasses smoking articles in which a nicotine-containing aerosol is generated from a tobacco material, tobacco extract, or other nicotine source, without combustion, and in some cases without heating, for example through a chemical reaction.
  • a method of forming a mouthpiece for a smoking article comprising: providing at least one mouthpiece element; providing a substantially transparent wrapper comprising an acetate ester of cellulose, the substantially transparent wrapper having first and second opposed edges; disposing an agent adjacent to the first opposed edge of the substantially transparent wrapper, the agent comprising an ester of glycerol; wrapping the substantially transparent around the at least one mouthpiece element such that the first and second opposed edges of the substantially transparent wrapper overlap with each other along a longitudinal overlapping region; wherein the ester of glycerol of the agent reacts with the acetate ester of cellulose to secure the opposed edges to one another.
  • the method further comprises the step of heating the substantially transparent wrapper, heating the agent comprising an ester of glycerol, or heating both the substantially transparent wrapper and the agent comprising an ester of glycerol to a temperature of at least 25 degrees Celsius, more preferably at least 50 degrees Celsius, even more preferably at least 70 degrees Celsius.
  • the method further comprises the step of heating the substantially transparent wrapper, heating the agent comprising an ester of glycerol, or heating both the substantially transparent wrapper and the agent comprising an ester of glycerol to a temperature of 140 degrees Celsius or less, more preferably 100 degrees Celsius or less, even more preferably 80 degrees Celsius or less.
  • FIG. 1 shows a smoking article in accordance with the present invention
  • FIG. 2 shows the smoking article of FIG. 1 with the mouthpiece unwrapped
  • FIG. 3 shows a cross sectional view of the overlapping region of the substantially transparent wrapper of FIG. 1 .
  • the filter cigarette 10 shown in FIGS. 1 and 2 comprises a wrapped rod 12 of tobacco cut filler which is attached at one end to an axially aligned filter 14 comprising a single filter segment 16 .
  • the single filter segment 16 is formed of cellulose acetate tow which has been wrapped with a substantially transparent wrapper in the form of substantially transparent plug wrap 18 .
  • the filter segment 16 incorporates particles of a cellulosic material (not shown) impregnated with a liquid flavourant, which are dispersed within the cellulose acetate tow.
  • the wrapped tobacco rod 12 and the filter 14 are joined by an outer wrapper 20 formed of standard tipping paper, which circumscribes the entire length of the filter 14 and an adjacent portion of the tobacco rod 12 .
  • the outer wrapper 20 is secured to the substantially transparent plug wrap 18 at adhesive bond points (not shown) spaced around the circumference of the filter 14 .
  • the outer wrapper 20 comprises a circular cut-out portion 22 having a diameter of approximately 5 mm which is positioned approximately 5 mm from the rod end of the outer wrapper 20 .
  • the underlying substantially transparent plug wrap 18 is exposed through the cut-out portion 22 in the outer wrapper 20 and an area of the filter including the cellulosic granules is therefore visible through the cut-out portion 22 .
  • the substantially transparent plug wrap 18 is formed from a cellulose diacetate film.
  • a first portion 19 of the substantially transparent plug wrap 18 is provided with an agent comprising triacetin.
  • the first portion 19 is adjacent to a first edge of the plug wrap 18 , which is configured to be wrapped around the filter segment 16 , such that the first edge overlaps with a second opposed edge of the substantially transparent wrapper along a longitudinal overlapping region.
  • the agent reacts with the cellulose diacetate in the overlapping portions of the plug wrap 18 to secure them together.
  • the resultant overlapping portion 30 has a thickness 37 of about two times the thickness 35 of the remainder of the wrapper 34 .
  • the agent 32 therefore results in an effectively seamless transition of the film from one overlapping piece to the other.
  • the agent 32 has not been provided across the entire width of the overlapping region 30 . Consequently, the tips 38 , 39 of the two overlapping edges are not secured to their corresponding portions of overlapping wrapper.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
US16/307,580 2016-06-30 2017-06-29 Smoking article having transparent wrapper Pending US20190174816A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP16177368 2016-06-30
EP16177368.4 2016-06-30
PCT/EP2017/066205 WO2018002264A1 (en) 2016-06-30 2017-06-29 Smoking article having transparent wrapper

Publications (1)

Publication Number Publication Date
US20190174816A1 true US20190174816A1 (en) 2019-06-13

Family

ID=56296710

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/307,580 Pending US20190174816A1 (en) 2016-06-30 2017-06-29 Smoking article having transparent wrapper

Country Status (10)

Country Link
US (1) US20190174816A1 (de)
EP (1) EP3478095B1 (de)
JP (1) JP7137481B2 (de)
KR (1) KR102443984B1 (de)
CN (1) CN109310144B (de)
AR (1) AR108921A1 (de)
MX (1) MX2018015122A (de)
RU (1) RU2760898C2 (de)
SG (1) SG11201809616WA (de)
WO (1) WO2018002264A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD984726S1 (en) * 2023-01-30 2023-04-25 Jie Wu Cigarette filter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019158335A1 (en) * 2018-02-15 2019-08-22 Philip Morris Products S.A. Aerosol-generating article comprising an aerosol-cooling element
KR102477682B1 (ko) * 2020-03-09 2022-12-14 주식회사 케이티앤지 에어로졸 발생 물품

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US3339560A (en) * 1964-08-19 1967-09-05 Eastman Kodak Co Tobacco smoke filters
WO2014019804A2 (en) * 2012-08-02 2014-02-06 Philip Morris Products S.A. Smoking article with menthol filter
US20140311508A1 (en) * 2011-11-07 2014-10-23 Philip Morris Products S.A. Smoking article with visibile contents

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US3025861A (en) * 1959-07-02 1962-03-20 Eastman Kodak Co Nonchanneling tobacco smoke filament filter
US3339560A (en) * 1964-08-19 1967-09-05 Eastman Kodak Co Tobacco smoke filters
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WO2014019804A2 (en) * 2012-08-02 2014-02-06 Philip Morris Products S.A. Smoking article with menthol filter

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Also Published As

Publication number Publication date
JP2019522967A (ja) 2019-08-22
CN109310144A (zh) 2019-02-05
JP7137481B2 (ja) 2022-09-14
RU2760898C2 (ru) 2021-12-01
KR102443984B1 (ko) 2022-09-19
RU2019101800A (ru) 2020-07-30
AR108921A1 (es) 2018-10-10
WO2018002264A1 (en) 2018-01-04
RU2019101800A3 (de) 2020-10-16
EP3478095B1 (de) 2021-10-20
EP3478095A1 (de) 2019-05-08
CN109310144B (zh) 2021-09-14
MX2018015122A (es) 2019-04-15
SG11201809616WA (en) 2018-11-29
KR20190024884A (ko) 2019-03-08

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