WO2010007020A1 - Languette de canal de formation pour un appareil de fabrication de filtres - Google Patents

Languette de canal de formation pour un appareil de fabrication de filtres Download PDF

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Publication number
WO2010007020A1
WO2010007020A1 PCT/EP2009/058913 EP2009058913W WO2010007020A1 WO 2010007020 A1 WO2010007020 A1 WO 2010007020A1 EP 2009058913 W EP2009058913 W EP 2009058913W WO 2010007020 A1 WO2010007020 A1 WO 2010007020A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
protrusion
garniture tongue
filter tow
tow
Prior art date
Application number
PCT/EP2009/058913
Other languages
English (en)
Inventor
Roberto Libbra
Dario degli Esposti
Ivan Prestia
Fabio Cantieri
Guylann Collet
Original Assignee
Philip Morris Products S.A.
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 S.A. filed Critical Philip Morris Products S.A.
Publication of WO2010007020A1 publication Critical patent/WO2010007020A1/fr

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
    • A24D3/0229—Filter rod forming processes
    • A24D3/0233—Filter rod forming processes by means of a garniture

Definitions

  • the present invention relates to a garniture tongue for a filter making apparatus.
  • a filter making apparatus is used for example in the manufacturing of filter elements for smoking articles, such as cigarettes.
  • Filter making apparatuses are generally known in the art, for example from the International patent application WO 03/082558.
  • the filter tow material for example cellulose acetate tow
  • the tow material is drawn from a bale and is subsequently transported to the filter making apparatus.
  • the tow material is bloomed by a series of rollers running at different speeds, thereby significantly increasing the volume of the tow material.
  • the bloomed filter tow is then converged into a transport jet 3 as shown in Fig. 1.
  • the filter tow material is then fluffed by the injection of compressed air supplied via a suitable arrangement (not shown) to the transport jet 3.
  • the fluffed filter tow material is further converged by the air funnel 4 before entering under a garniture tongue 5.
  • the garniture tongue 5 guides the converging filter tow material exiting from transport jet 3 and air funnel 4 into a standard garniture downstream of outlet end 2 where the filter tow is shaped to rod form having a circular cross section.
  • the resulting continuous rod is then wrapped with a plug wrap and the plug wrap is secured with an overlapping and adhesively bonded seam. Finally, the continuous rod of wrapped filter material is cut into rods of defined length and transported to a cigarette maker.
  • a garniture tongue for a filter making apparatus comprising a guide surface capable of guiding filter tow running over the guide surface, and further comprising means arranged on the guide surface for laterally deflecting the filter tow.
  • the laterally deflected filter tow may then be directly formed into an oval or elliptic shape.
  • the major axis of the oval cross section of the filter rod generally coincides with the direction of lateral deflection of the filter tow material.
  • Such a garniture tongue is particularly suitable for the formation of oval filter rods.
  • the means for laterally deflecting the filter tow forces the fibres of the tow aside laterally to flatten and widen the filter tow.
  • the tow Upstream of the means for laterally deflecting the tow, the tow has essentially a circular cross section.
  • the tow assumes for a short period two more or less separate streams, each with a more or less circular cross section.
  • the fibres of the two smaller streams of tow partially regroup such that the area between the two streams of tow is filled again while the two smaller streams of tow expand into the available space.
  • downstream is used to indicate the position of an element relative to another in a direction that follows the flow of filter tow through the filter making apparatus.
  • upstream is used to indicate the position of an element relative to another in a direction that is opposite of the downstream direction.
  • deflecting means or “means for deflecting” are used to describe an obstacle on the garniture tongue that is in the regular flow path of the tow along the garniture tongue and that deflects or diverts the moving tow fibers, for example on either side of the obstacle, or above the obstacle, or mixtures thereof.
  • the means for laterally deflecting the filter tow comprises at least one protrusion which is arranged on the guide surface.
  • a second protrusion is located downstream of the first protrusion.
  • the first protrusion has larger outer dimensions than the second protrusion.
  • the protrusions are a particularly effective deflecting means. They may have any suitable shape, such as for example spherical, pyramidal, cylindrical, conical, frustoconical, prismatic, polyhedronical, egg-shaped or drop shaped.
  • the protrusion or protrusions may reach partly into the stream of tow or up to the centre of the stream of tow, beyond the centre of the stream of tow or may completely split the stream of tow flowing over and past the protrusion or protrusions.
  • the shape of the protrusion or protrusions is spherical.
  • the term "spherical" is meant to include any parts of a sphere, in particular semi-spheres or larger or smaller parts of a sphere. This is applicable similarly for the other shapes of the protrusions mentioned above.
  • pyramidal, cylindrical, conical, frustoconical, prismatic are meant to include all kinds of base shapes.
  • base shapes are triangular, rectangular, pentagonal, hexagonal, octagonal or parts thereof, circular, semi-circular, oval, elliptical, ring shaped, pie slice shaped or parts thereof.
  • circular is meant to include any parts of a circle, in particular semi-circle or larger or smaller parts and slices of a circle, comprising at least one rounded edge. This is applicable similarly for the other geometrical shapes mentioned above.
  • the at least one bead is glued, welded, soldered, riveted, screwed clamped or otherwise permanently or removably attached to the surface of the garniture tongue.
  • the garniture tongue is removably attached to the filter making apparatus in order to facilitate easy exchange of the garniture tongue.
  • the at least one protrusion is made of a material that has a hard, smooth surface that shows little abrasion during use.
  • the at least one protrusion is made from steel.
  • the flat surface has at least one hole as a seat for the protrusion.
  • the garniture tongue may have a semi-circular hole or cavity into which an essentially spherical bead is inserted such that only a semi-circular protrusion of the bead is in the path of the moving filter tow.
  • the guide surface comprises a channel.
  • the channel is open on its side facing the filter tow and the means for laterally deflecting the filter tow are arranged in the channel.
  • the protrusion are arranged in the channel.
  • the means for laterally deflecting the filter tow comprise a protrusion being arranged in the channel and extending longitudinally in the direction of movement of the filter tow.
  • this protrusion may have a circular shape when viewed in cross- section.
  • the protrusion may have a gull-wing shape when viewed in cross-section. While the aforementioned two embodiments of the protrusion are advantageous, other cross-sectional shapes of the protrusion are conceivable as well.
  • the extension of the protrusion into the channel diminishes in a downstream direction.
  • the garniture tongue may comprise a tip having a flat guide surface.
  • the means for laterally deflecting the filter tow like the above-mentioned protrusions are arranged on the flat surface of the tip.
  • Fig. 1 shows a detail of an embodiment of a filter making apparatus according to the prior art
  • Fig. 2 shows a side view of a first embodiment of a garniture tongue according to the invention
  • Fig. 3 shows a partial section along line Ill-Ill of the embodiment of the garniture tongue shown in Fig. 2
  • Fig. 4 shows a side view partially broken away of a second embodiment of the garniture tongue according to the invention
  • Fig. 5 shows a side view partially broken away of a third embodiment of the garniture tongue according to the invention
  • Fig. 6 shows a partial section along lines Vl-Vl of the embodiment of the garniture tongue shown in Fig. 5, and Fig. 7 shows the channel of a fourth embodiment of the garniture tongue according to the invention in a view similar to that of Fig. 6.
  • Fig. 2 and Fig. 3 show a first embodiment of a tongue 6 according to the invention.
  • An inclined channel 60 is indicated in dashed lines in Fig. 2.
  • the inclined channel 60 converges in the downstream direction towards its end 600.
  • the channel 60 is open on one side. Adjacent to the end 600 of the channel 60 the garniture tongue 6 has a flat surface 61 at its tip 64.
  • the tip 64 of the flat surface 61 two protrusions in the form of semi-spherical beads 62, 63 are arranged.
  • the outer dimension or volume of the first bead 62 is larger than that of the second downstream bead 63.
  • the direction of flow of the filter tow in the embodiment shown is from left to right.
  • the garniture tongue 6 may be arranged upside down such that the flat surface 61 of the garniture tongue 6 faces downwards rather than upwards as shown. This has no influence on the functioning of the garniture tongue 6 according to the invention.
  • the same is true for the further embodiments of the garniture tongues 7, 8, 9 shown in Fig. 4 to Fig.
  • the filter tow material runs through the channel 60 and the fibres of the filter tow material are converged and compressed towards the garniture tongue's end 600 due to the geometry of the channel 60.
  • the fibres of the filter tow material are deflected laterally by the beads 62, 63. While semi-circular beads 62, 63 are shown in this embodiment by way of example, the beads 62, 63 may have any other suitable shape.
  • the deflected fibres of the filter tow material regroup downstream of the beads 62, 63. This allows the formation of an oval filter rod during further process steps.
  • the oval filter rod may then be cut into individual oval filters of a desired length, typically a multiple of the final filter length of a cigarette filter.
  • a second embodiment of the garniture tongue according to the invention is shown in Fig. 4.
  • the channel 70 is again converging towards its end 700.
  • the garniture tongue 7 has no flat upper surface over which the filter tow material runs. Instead, the beads 72, 73 are arranged inside the channel 70.
  • the filter tow material runs through the channel 70 and is converged and compressed towards the garniture tongue end 700 due to the geometry of the channel 70. Upon reaching the beads 72, 73, the fibres are deflected laterally.
  • a third embodiment of the tongue according to the invention is shown in Fig. 5 and Fig. 6.
  • the garniture tongue 8 has no discrete beads arranged in the channel 80. Instead, a continuous protuberance 82 as protrusion extends longitudinally along the channel 80.
  • the protuberance 82 has a circular shape when viewed in cross-section, in particular it is semi-circular as shown in Fig. 6. However, the protuberance 82 may have any other suitable cross-sectional shape.
  • the filter tow material is converged due to the converging geometry of channel 80, and at the same time the fibres of the filter tow material are laterally deflected by the protuberance 82.
  • the deflected fibres regroup downstream of the channel 80.
  • Fig. 7 shows the channel 90 of a fourth embodiment of the garniture tongue 9 according to the invention.
  • the protuberance 92 has a gull-wing shape.
  • the filter tow material runs through channel 90, it is converged due to the converging geometry of channel 90, and at the same time the fibres of the filter tow material are deflected laterally by the gull-wing shaped protuberance 92. .
  • the deflected fibres regroup downstream of the channel 90.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

L'invention concerne une languette de canal de formation (6, 7, 8, 9) pour un appareil de fabrication de filtres, comportant une surface de guidage (60, 61, 70, 80, 90) guidant la mèche pour filtre passant sur la surface de guidage, et comportant par ailleurs des moyens (62, 63, 72, 73, 82, 92) arrangés sur la surface de guidage pour dévier la mèche pour filtre dans le sens latéral.
PCT/EP2009/058913 2008-07-14 2009-07-13 Languette de canal de formation pour un appareil de fabrication de filtres WO2010007020A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08160363A EP2145553A1 (fr) 2008-07-14 2008-07-14 Languette de garniture pour appareil de fabrication de filtre
EP08160363.1 2008-07-14

Publications (1)

Publication Number Publication Date
WO2010007020A1 true WO2010007020A1 (fr) 2010-01-21

Family

ID=40085650

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/058913 WO2010007020A1 (fr) 2008-07-14 2009-07-13 Languette de canal de formation pour un appareil de fabrication de filtres

Country Status (2)

Country Link
EP (1) EP2145553A1 (fr)
WO (1) WO2010007020A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013057176A1 (fr) 2011-10-20 2013-04-25 Carl Zeiss Meditec Ag Système de laser ophtalmologique et procédé de traitement chirurgical au laser de la cornée

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624722A (en) * 1969-04-10 1971-11-30 Molins Machine Co Ltd Continuous rod making machines
US3813996A (en) * 1971-04-15 1974-06-04 F Labbe Continuous filter rod making machines
WO2003082558A1 (fr) * 2002-03-29 2003-10-09 Philip Morris Products S.A. Procede et appareil de fabrication de filtres de cigarette comprenant un element aromatise au centre de ceux-ci

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624722A (en) * 1969-04-10 1971-11-30 Molins Machine Co Ltd Continuous rod making machines
US3813996A (en) * 1971-04-15 1974-06-04 F Labbe Continuous filter rod making machines
WO2003082558A1 (fr) * 2002-03-29 2003-10-09 Philip Morris Products S.A. Procede et appareil de fabrication de filtres de cigarette comprenant un element aromatise au centre de ceux-ci

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013057176A1 (fr) 2011-10-20 2013-04-25 Carl Zeiss Meditec Ag Système de laser ophtalmologique et procédé de traitement chirurgical au laser de la cornée

Also Published As

Publication number Publication date
EP2145553A1 (fr) 2010-01-20

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