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WO2013030289A1 - Fabrication de tiges à fumer rainurées - Google Patents

Fabrication de tiges à fumer rainurées Download PDF

Info

Publication number
WO2013030289A1
WO2013030289A1 PCT/EP2012/066878 EP2012066878W WO2013030289A1 WO 2013030289 A1 WO2013030289 A1 WO 2013030289A1 EP 2012066878 W EP2012066878 W EP 2012066878W WO 2013030289 A1 WO2013030289 A1 WO 2013030289A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
grooves
pressing
pressing member
smoking article
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.)
Ceased
Application number
PCT/EP2012/066878
Other languages
English (en)
Inventor
Karl Kaljura
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.)
British American Tobacco Investments Ltd IFI
Original Assignee
British American Tobacco Investments Ltd IFI
British American Tobacco Co 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 British American Tobacco Investments Ltd IFI, British American Tobacco Co Ltd filed Critical British American Tobacco Investments Ltd IFI
Priority to US14/240,110 priority Critical patent/US20140206513A1/en
Priority to EP12759060.2A priority patent/EP2750527A1/fr
Publication of WO2013030289A1 publication Critical patent/WO2013030289A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/025—Final operations, i.e. after the filter rod forming process
    • A24D3/0258—Means for making grooves

Definitions

  • This specification concerns the manufacture of a grooved smoking article rod such as a grooved filter for a cigarette.
  • a machine for making grooved smoking article rods comprising an axially rotatable drum having a generally cylindrical outer surface, a pressing member spaced from and extending around a portion of the outer surface of the drum, the pressing member having a pressing surface that includes grooves facing the outer surface of the drum, a heater configured to heat the pressing surface, and an inlet feed to supply smoking article rods between the outer surface of the drum and the pressing surface when heated by the heater so as to be rotated by the rotation of the drum over the grooves and impress a pattern of grooves into the rod.
  • the pressing member may be configured to be retro-fitted to the rolling drum of apparatus for wrapping tipping paper around a smoking article such as cigarette, which has a rolling plate with a surface facing the drum for rolling tipping paper around the circumference of a filter segment and a coaxial rod of smokeable material.
  • the retro-fittable pressing member may have a pressing surface that includes grooves to face the outer surface of the drum, a heater to heat the pressing surface, and a pressing member being so configured that smoking article rods passing between the outer surface of the drum and the pressing surface when heated by the heater are rotated by the rotation of the drum over the grooves to press the pattern of grooves into the rod.
  • the pressing member may be configured to be retro-fitted in place of the rolling plate, spaced from and extending around the portion of the outer surface of the drum.
  • Also described is a method a method of making grooved smoking article rods comprising feeding smoking article rods between a generally cylindrical outer surface of an axially rotating drum and a heated pressing member spaced from and extending around a portion of the outer surface of the drum, the pressing member having a pressing surface that includes grooves facing the outer surface of the drum such that the rods are rotated by the rotation of the drum over the grooves and become impressed with a pattern of grooves corresponding to the grooves in the pressing surface.
  • Figure l is a schematic side view of a machine for making grooved smoking article rods that comprise filter rods in this example;
  • Figure 2 is a schematic illustration of a filter rod prior to having grooves formed in its periphery by the machine of Figure l;
  • FIG 3 illustrates the filter rod of Figure 2 after having been formed with grooves by the machine of Figure 1;
  • Figure 4 is a perspective schematic illustration of a cigarette that includes a grooved filter made by the machine of Figure 1;
  • Figure 5 is a longitudinal sectional view of another form of cigarette that utilises a grooved filter made by the machine of Figure 1;
  • Figure 6 is a partially exploded perspective view of the cigarette illustrated in Figure 5.
  • a filter rod 1 comprises filter material, for example cellulose acetate tow 2 wrapped in a plug wrap 3.
  • the tobacco rod may be made in essentially continuous lengths which are cut into segments. In some cigarette manufacturing processes, the cut segments correspond to a length of two cigarettes manufactured end to end which are subsequently cut apart from one another.
  • Figure 2 illustrates a segment suitable for an individual cigarette. As shown in Figure 2, the segment is generally cylindrical about a longitudinal axis of symmetry X-X'.
  • the cylindrical surface 4 is initially smooth, i.e. ungrooved in this example.
  • successive filter rod segments 1 are caused to roll between a drum 5 that rotates about axis 6 in a direction of arrow Y.
  • the drum has a series of axially extending, circumferentially spaced grooves 7 in its exterior cylindrical surface 8 that act as receptacles that receive successive ones of the filter segments 1 fed from an inlet feed hopper 9.
  • a generally arcuately extending pressing member 10 has a curved pressing surface 11 which is generally coaxial with axis 6.
  • the pressing surface 11 is formed with a pattern of uniformly spaced grooves 12 that extend in a direction parallel to the rotational axis 6 of the drum.
  • the pressing member includes an electrical heater 13 driven from an electrical power supply (not shown).
  • the filter segments 1 are fed successively from the inlet hopper 9 into an arcuate gap 14 between the cylindrical surface 8 of the drum 5 and the pressing member 10. Successive ones of the filter segments 1 are received in individual grooves 7 in the drum 8.
  • the segments 1 are entrained into the gap 14 and are rotated over the grooves 12 in the pressing surface 11, which is heated by the heater 13 so as to form a regular pattern of grooves 15 that as shown in Figure 3, extend parallel to the axis X-X' around the cylindrical surface of the filter segment so as to form a grooved filter segment 1'.
  • the filter segments 1 thus travel in a direction of arrow A in the peripheral gap 14 to an outlet area 16 from which the resulting grooved filter segments 1' fall in a direction of arrow B into a receptacle (not shown) for subsequent assembly into cigarettes.
  • a kick bar 17 is provided on the pressing surface 11 in order to encourage each grooved filter segment 1' to release itself from the receptacle 7 in which it was guided during passage along the annular gap 14 during the groove forming process. More than one such kick bar 17 may be provided along the pressing surface 11 in order to ensure proper rotation of the filter segments as they move along the pattern of grooves 12.
  • the grooves may have a depth of between 0.2 to 2.0mm, more particularly from 0.2 to 1.0mm, from 0.5 to 1.0mm, from 1.0 to 2.0mm or from 1.5 to 2.0mm, and may be for example spaced with a periodicity of o.5-2mm.
  • any suitable grooving pattern may be formed by appropriately configuring the pattern of grooves 12 in the pressing surface 11.
  • the radial spacing D between the pressing surface 11 and the axial surface 8 of the drum 5 is suitably selected in order to ensure that the filter segment 1 is subject to compression whilst rotated and moved in the direction of arrow A and in this way, the pattern of grooves 12 is pressed into the cylindrical surface of the filter rod segment 1.
  • the electrical heater 13 heats the pressing surface 11 to warm the plug wrap 3 so as to form a stable groove pattern 15 in the cylindrical surface 4 of the filter segment 1.
  • the pressing surface is heated to a temperature of between 150-250°C for this purpose.
  • the grooves are spaced so as to form 20-40 grooves 15 around the circumferential surface 4 of the filter segment 1.
  • a smaller or greater number of grooves of a selectable, appropriate depth can be formed as required by suitably configuring the pattern of grooves 12.
  • the pressing member 10 is mounted on a shaft for rotation about axis W and can be locked in position by means of locking mechanism (not shown) .
  • the locking mechanism allows movement of the pressing member radially in a direction Z-Z' in order to allow adjustment of the pressure imparted to the filter segments 1 as they move along the gap 14 during the groove forming process.
  • the pressing member can be adjusted in a direction of arrow D transversely of axis W in order to configure the pressing member 10 to have a uniform radial distance D along the length of the gap 14 or to slightly taper the gap 14 along its length.
  • filter segments are attached to a rod of smokeable material by means of tipping paper which is rolled around the circumference of the rod of smokeable material and the filter.
  • a rolling machine which has a drum generally similar to the drum 5 shown in Figure 1.
  • a curved rolling plate with a surface facing the drum is used to roll the tipping paper around the circumference of filter segments and coaxial rods smokeable material in order to attach each of the segment to a respective rod of smokeable material.
  • An example of a rolling machine is the Hauni Max 5 manufactured by Hauni Maschinenbau AG.
  • the rolling plate of a conventional rolling drum machine may be removed and replaced by the pressing member 10 shown in Figure 1 as a retro-fit modification of the rolling machine.
  • FIG 4 illustrates a first example of cigarette that utilises a grooved filter segment produced by the machine at Figure 1.
  • the cigarette comprises a rod 18 of smokeable material such as tobacco in a paper wrapper 19 to which a filter segment 1' is attached by means of tipping paper 20 that surrounds one end of the tobacco rod and also the cylindrical surface of the filter segment 1' so as to bridge the groove 15 and provide circumferentially spaced, axially extending passageways from the proximal or mouth end of the filter 21 to its distal end 22.
  • Ventilation holes 23 are formed in the tipping paper at the distal end 22 of the filter 1' for example by laser cutting in order to allow ventilation air to enter into the grooves 15 and be drawn into the user's mouth along with smoke created by combusting the rod 19.
  • FIG. 5 Another example of a cigarette that uses a grooved filter segment 1' is illustrated schematically in Figures 5 and 6.
  • the grooves 15 in the filter segment 1' are used in combination with an element 24 as an indexing mechanism.
  • the smoking article includes a rod 18 of smokeable material as previously described, circumscribed by a paper wrapper 19.
  • Tipping paper 20 attaches a first filter segment which comprises a filter segment 1' formed with grooves 15 along at least a major part of its cylindrical surface 4.
  • a second filter segment 25 is arranged in axial abutment with the first segment 1' in respect to the axis X-X'.
  • the second segment has a generally smooth cylindrical outer surface 4 i.e. no grooves have been formed in it.
  • An outer wrapper 26 surrounds the filter segments.
  • the wrapper 26 is glued to the second segment 25 and also, the element 24 is glued onto the interior surface of the wrapper 26 in alignment with the grooves 15. As shown in Figure 5, when assembled the element 24 engages with the grooves 15 to provide an indexing mechanism which produces an audible click upon rotation of the outer wrapper 26.
  • the filter may be provided with an adjustable ventilation mechanism (not shown) that can be adjusted by rotation of the first filter element relative to the second filter element about the axis X-X'.
  • the indexing mechanism 15, 24 allows controlled rotation of the filter elements relative to one another and also provides the user with an audible indication of the rotation. It will be appreciated that in practice, structural elements will be provided in order to prevent the wrapper 26 from sliding axially away from the cigarette but this has been omitted from Figures 5 and 6 for the purpose of simplicity of explanation.
  • groove 15 may not be continuous as shown in Figure 3 and may be made up of more complex segments which need not necessarily be axially aligned.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Abstract

L'invention porte sur une machine pour réaliser des tiges d'articles à fumer rainurées, laquelle machine a un tambour axialement rotatif (5) avec une surface externe globalement cylindrique (8). Un élément de pression (10) a une surface de pression (11) qui comprend des rainures (12) faisant face à la surface externe du tambour. L'élément de pression est chauffé par un élément chauffant (13). Des segments de tige de filtre (1) sont introduit à partir d'une fourniture d'entrée (9) entre la surface de pression (11) et le tambour (5) de façon à être tournés et pressés contre les rainures (12) de telle sorte qu'un motif de rainures (15) est formé dans la surface externe du segment de filtre.
PCT/EP2012/066878 2011-09-02 2012-08-30 Fabrication de tiges à fumer rainurées Ceased WO2013030289A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US14/240,110 US20140206513A1 (en) 2011-09-02 2012-08-30 Manufacturing Grooved Smoking Rods
EP12759060.2A EP2750527A1 (fr) 2011-09-02 2012-08-30 Fabrication de tiges à fumer rainurées

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB201115157A GB201115157D0 (en) 2011-09-02 2011-09-02 Manufacturing grooved smoking rods
GB1115157.8 2011-09-02

Publications (1)

Publication Number Publication Date
WO2013030289A1 true WO2013030289A1 (fr) 2013-03-07

Family

ID=44882102

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/066878 Ceased WO2013030289A1 (fr) 2011-09-02 2012-08-30 Fabrication de tiges à fumer rainurées

Country Status (4)

Country Link
US (1) US20140206513A1 (fr)
EP (1) EP2750527A1 (fr)
GB (1) GB201115157D0 (fr)
WO (1) WO2013030289A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017198994A1 (fr) * 2016-05-19 2017-11-23 British American Tobacco (Investments) Limited Bâtonnet-filtre à revêtement ondulé et appareil et procédé de fabrication du bâtonnet-filtre
WO2017198995A1 (fr) * 2016-05-19 2017-11-23 British American Tobacco (Investments) Limited Bâtonnet-filtre ayant un revêtement ondulé, appareil et procédé de fabrication

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2081066A (en) * 1980-07-11 1982-02-17 Brown & Williamson Tobacco Corp Apparatus and method for making grooves in tobacco-smoke filters
EP0059041A1 (fr) * 1981-02-14 1982-09-01 Fabriques De Tabac Reunies S.A. Appareil pour former des canaux à la périphérie d'éléments filtrants
US4492238A (en) 1981-09-30 1985-01-08 Philip Morris Incorporated Method and apparatus for production of smoke filter components
DE102006001445A1 (de) * 2006-01-10 2007-07-19 Hauni Maschinenbau Ag Fördern von stabförmigen Artikeln der Tabak verarbeitenden Industrie
WO2010115675A1 (fr) * 2009-04-09 2010-10-14 British American Tobacco (Investments) Limited Filtre pour article à fumer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1507765A (en) * 1976-03-17 1978-04-19 British American Tobacco Co Production of tobacco-smoke filters
US4219030A (en) * 1977-08-19 1980-08-26 Liggett Group Inc. Aeration groove filter
JPS594299B2 (ja) * 1980-06-09 1984-01-28 株式会社日本デキシ− 紙製容器の製造方法
DE3105456C2 (de) * 1981-02-14 1985-08-14 Fabriques de Tabac Réunies S.A., Neuchâtel Verfahren zum Herstellen eines stabförmigen, rauchbaren Artikels und Vorrichtung zur Ausübung dieses Verfahrens
US5902431A (en) * 1997-06-04 1999-05-11 R. J. Reynolds Tobacco Company Composite web forming apparatus and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2081066A (en) * 1980-07-11 1982-02-17 Brown & Williamson Tobacco Corp Apparatus and method for making grooves in tobacco-smoke filters
EP0059041A1 (fr) * 1981-02-14 1982-09-01 Fabriques De Tabac Reunies S.A. Appareil pour former des canaux à la périphérie d'éléments filtrants
US4492238A (en) 1981-09-30 1985-01-08 Philip Morris Incorporated Method and apparatus for production of smoke filter components
DE102006001445A1 (de) * 2006-01-10 2007-07-19 Hauni Maschinenbau Ag Fördern von stabförmigen Artikeln der Tabak verarbeitenden Industrie
WO2010115675A1 (fr) * 2009-04-09 2010-10-14 British American Tobacco (Investments) Limited Filtre pour article à fumer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017198994A1 (fr) * 2016-05-19 2017-11-23 British American Tobacco (Investments) Limited Bâtonnet-filtre à revêtement ondulé et appareil et procédé de fabrication du bâtonnet-filtre
WO2017198995A1 (fr) * 2016-05-19 2017-11-23 British American Tobacco (Investments) Limited Bâtonnet-filtre ayant un revêtement ondulé, appareil et procédé de fabrication

Also Published As

Publication number Publication date
US20140206513A1 (en) 2014-07-24
GB201115157D0 (en) 2011-10-19
EP2750527A1 (fr) 2014-07-09

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