EP0039647B1 - Dispositif de fabrication de filaments de tabac - Google Patents

Dispositif de fabrication de filaments de tabac Download PDF

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Publication number
EP0039647B1
EP0039647B1 EP81400711A EP81400711A EP0039647B1 EP 0039647 B1 EP0039647 B1 EP 0039647B1 EP 81400711 A EP81400711 A EP 81400711A EP 81400711 A EP81400711 A EP 81400711A EP 0039647 B1 EP0039647 B1 EP 0039647B1
Authority
EP
European Patent Office
Prior art keywords
filaments
gridwork
extrusion
diameter
tobacco
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.)
Expired
Application number
EP81400711A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0039647A1 (fr
Inventor
Pierre Berger
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.)
Clextral SAS
Original Assignee
Clextral SAS
Creusot Loire 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 Clextral SAS, Creusot Loire SA filed Critical Clextral SAS
Priority to AT81400711T priority Critical patent/ATE15133T1/de
Publication of EP0039647A1 publication Critical patent/EP0039647A1/fr
Application granted granted Critical
Publication of EP0039647B1 publication Critical patent/EP0039647B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/221—Extrusion presses; Dies therefor extrusion dies
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products

Definitions

  • the subject of the invention is a device for tobacco filaments by extrusion of a wet mixture based on tobacco particles.
  • the die must be able to withstand the extrusion pressure and it is difficult to make the orifices of small section in a sufficiently resistant material. In addition, these orifices can be easily plugged, which results in the replacement of the die and consequently the stoppage of production.
  • the subject of the invention is a new simple and economical arrangement for the easier production of tobacco filaments by extrusion.
  • the extrusion die is constituted by a grid formed of intertwined stretched wires and placed at the outlet of a cylindrical conduit of sufficient diameter so that the extrusion pressure does not produce drying of the mixture, and the length of which is between 0.5 and 3 times the diameter, the material forming a rod in the cylindrical duct which is then divided into filaments by the mesh.
  • the extruder has a substantially horizontal axis and the filaments break by gravity as soon as a certain length has been formed beyond the mesh, said length being a function of the composition of the extruded mixture .
  • the spinning axis is substantially vertical, the die being associated with a filament cutting device, in this case, at least one of the two elements of the spinning assembly constituted by the duct and the screen is animated by a transverse oscillation movement causing the formation of wavy filaments.
  • the extrusion die is constituted by a simple cylindrical conduit of relatively large diameter, for example of the order of 10 mm.
  • the raw materials introduced upstream of the extruder in particular the tobacco particles and the binders and the amount of water required, for example 15 to 25% of the weight of dry matter, are kneaded inside the barrel so to form a mixture which is extruded under pressure to form a rod or tube 5 inside the cylindrical duct 3.
  • a grid 6 transverse to the axis of the duct and which cuts the strand 5 into a plurality of filaments 7.
  • the grid 6 consists, as shown in the figures, of intertwined stretched wires with rounded section constituting separators 60 capable of cutting the tube 5 into a plurality of filaments whose unitary section corresponds to the inner mesh resulting from the intersection of wires 60.
  • This method guarantees the homogeneity of the extruded mixture and therefore the qualities of the filaments produced.
  • the pressure in the die depending essentially on the diameter thereof, the use of a large diameter conduit for example between 10 and 20 mm allows to extrude a large flow without excessively raising the pressure.
  • the wires of the mesh causing the division of the rod into filaments will preferably have a rounded section which makes it possible to limit the pressure drop and the pressure in the dies formed by the mesh 61 of the mesh.
  • the mesh of the mesh will have a truncated section and will give a certain proportion of finer filaments. This proportion advantageously facilitates the shaping of cigarettes.
  • the dimensions of the orifices can vary, for the long side between 0.7 and 2 mm and for the short side between 0.30 and 0.50 mm .
  • conduit 3 having a diameter of 10 mm, a metal fabric made up of 0.42 mm wires will allow to obtain filaments with a cross section of 0.35 ⁇ 0.75 mm.
  • the use as a die of a metal mesh makes it possible to easily renew the part located in front of the outlet orifice.
  • the mesh can be constituted by a strip of metallic fabric 60 unwinding from a reserve coil 63 and applied against the end 10 of the sheath 1 by a simple fastener 11 which is sufficient to loosen in order to be able to pass a new part of the fabric in front of the orifice. This operation can thus be done without significant disassembly of the head of the extruder and therefore without stopping production, because the movement of the mesh can be performed during spinning.
  • the tobacco filaments freely come out of the mesh in a substantially horizontal direction.
  • the proportions of cohesion agents introduced into the mixture and the extrusion pressure it is possible to obtain filaments having sufficient strength to form tobacco strands which describe a slightly pronounced downward curve and break under their dead weight after a certain length.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP81400711A 1980-05-06 1981-05-06 Dispositif de fabrication de filaments de tabac Expired EP0039647B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81400711T ATE15133T1 (de) 1980-05-06 1981-05-06 Vorrichtung zur herstellung von tabakfasern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8010097 1980-05-06
FR8010097A FR2481891A1 (fr) 1980-05-06 1980-05-06 Dispositif de fabrication de filaments de tabac

Publications (2)

Publication Number Publication Date
EP0039647A1 EP0039647A1 (fr) 1981-11-11
EP0039647B1 true EP0039647B1 (fr) 1985-08-28

Family

ID=9241670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400711A Expired EP0039647B1 (fr) 1980-05-06 1981-05-06 Dispositif de fabrication de filaments de tabac

Country Status (8)

Country Link
EP (1) EP0039647B1 (enrdf_load_stackoverflow)
JP (1) JPS575681A (enrdf_load_stackoverflow)
AT (1) ATE15133T1 (enrdf_load_stackoverflow)
BR (1) BR8102569A (enrdf_load_stackoverflow)
CA (1) CA1163069A (enrdf_load_stackoverflow)
CU (1) CU21244A3 (enrdf_load_stackoverflow)
DE (1) DE3171995D1 (enrdf_load_stackoverflow)
FR (1) FR2481891A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4117307C1 (enrdf_load_stackoverflow) * 1991-05-27 1992-06-04 B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339247C1 (de) * 1983-10-28 1985-05-09 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Verfahren und Vorrichtung zur Herstellung von gekraeuselten Faserstuecken aus wiederaufbereitetem Tabak
GB8704196D0 (en) * 1987-02-23 1987-04-01 British American Tobacco Co Tobacco reconstitution
GB8704197D0 (en) * 1987-02-23 1987-04-01 British American Tobacco Co Tobacco reconstitution
GB0011351D0 (en) * 2000-05-12 2000-06-28 British American Tobacco Co Tobacco reconstitution

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE478954C (enrdf_load_stackoverflow) *
GB770071A (en) * 1955-02-09 1957-03-13 Nat Res Dev Improvements in tobacco smoke filters
AT262125B (de) * 1966-10-10 1968-05-27 Schiff & Stern Ges M B H Einrichtung zur Herstellung von künstlichem Zigarettentabak
LU73096A1 (enrdf_load_stackoverflow) * 1975-07-29 1977-03-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4117307C1 (enrdf_load_stackoverflow) * 1991-05-27 1992-06-04 B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De

Also Published As

Publication number Publication date
DE3171995D1 (en) 1985-10-03
JPS575681A (en) 1982-01-12
ATE15133T1 (de) 1985-09-15
FR2481891A1 (fr) 1981-11-13
FR2481891B1 (enrdf_load_stackoverflow) 1984-03-02
EP0039647A1 (fr) 1981-11-11
CU21244A3 (en) 1987-10-12
CA1163069A (fr) 1984-03-06
BR8102569A (pt) 1982-01-19

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