EP0143335B1 - Dispositif pour la fabrication de filaments ondulés à partir de tabac reconstitué - Google Patents

Dispositif pour la fabrication de filaments ondulés à partir de tabac reconstitué Download PDF

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Publication number
EP0143335B1
EP0143335B1 EP84112877A EP84112877A EP0143335B1 EP 0143335 B1 EP0143335 B1 EP 0143335B1 EP 84112877 A EP84112877 A EP 84112877A EP 84112877 A EP84112877 A EP 84112877A EP 0143335 B1 EP0143335 B1 EP 0143335B1
Authority
EP
European Patent Office
Prior art keywords
nozzle head
insert
tobacco
outer sleeve
edge
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
EP84112877A
Other languages
German (de)
English (en)
Other versions
EP0143335A1 (fr
Inventor
Wilfried Dipl.-Ing. Dr. Stiller
Jörn Dipl.-Ing. Dr. Ulrich
Hartwig Dipl.-Ing. Sibbers
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 Germany GmbH
Original Assignee
BAT Cigarettenfabriken GmbH
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 BAT Cigarettenfabriken GmbH filed Critical BAT Cigarettenfabriken GmbH
Priority to AT84112877T priority Critical patent/ATE28259T1/de
Publication of EP0143335A1 publication Critical patent/EP0143335A1/fr
Application granted granted Critical
Publication of EP0143335B1 publication Critical patent/EP0143335B1/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 invention relates to a device for producing crimped fiber pieces from reprocessed tobacco of the type specified in the preamble of claim 1.
  • DE-C-1 432 567 discloses a method and an apparatus for producing crimped fiber pieces from recycled tobacco, the thread-like intermediate products having to be subjected to a subsequent, very complex processing in order to obtain the desired crimped fiber pieces.
  • the filiform intermediate products which have a circular cross section, have to be rolled into intermediate products with a flat cross section and then dried in an air dryer, which ultimately results in the crimped fiber pieces.
  • DE-A-1 529 846 describes a press head for twin-screw extruders for processing plastic materials, in which a conical body is inserted into the nozzle bore of the press head housing.
  • the body which tapered at the beginning and was made with a slight incline in its main part, contains a multiplicity of narrow channels delimited by webs on the circumference of the main part, through which the material is conveyed by the twin screw to a corresponding number of outlet openings arranged in a circle; the inner boundary of the channels in the core of the body and the outer boundary on the inner surface of the nozzle bore run towards the outlet openings at an acute angle, so that the channels taper continuously towards the outlet openings and a strand of material emerges from the channel at the outlet opening.
  • a device for the production of crimped fiber pieces from reprocessed tobacco of the specified type is disclosed in EP-A-39647 and has a mixer for tobacco dust and / or tobacco waste, binders and optionally additives, an extruder for the mixture obtained, a nozzle head on the extruder for the production of thread-like intermediate products and a separating device for the emerging thread-like intermediate products arranged directly in front of the nozzle head.
  • the reprocessed tobacco mass is pressed together by the screw of an extruder in a tapered outlet area and then pressed through a nozzle plate in front of which a cutting knife is arranged.
  • the disadvantage here is the relatively high cleaning effort, since the entire device must be taken apart for the thorough cleaning of this extruder.
  • the invention is therefore based on the object of providing a device for producing crimped fiber pieces from reprocessed tobacco of the type specified, in which crimped fiber pieces with the desired dimensions result without great additional effort.
  • the advantages achieved with the invention are based in particular on the fact that when the individual thread-like intermediate products leaving the nozzle head are cut, the desired, crimped fiber pieces immediately result, the dimensions and their behavior of which, in particular in the cigarette manufacturing machine, are matched to the corresponding properties of the cut tobacco that, for example, they can be sent to cigarette production immediately, i.e. they do not have to go through tobacco preparation.
  • the streamlined design of the nozzle head which is achieved by the process step of shaping the plastic, strand-like tobacco mass into a thin-walled tube, results in a substantial reduction in the risk of clogging, that is to say that such an extruder can be operated with relatively long maintenance intervals because of a fault only rarely occurs.
  • the thin-walled tube is cut into individual threads only immediately before leaving the device according to the invention, which results in thread-like, crimped intermediate products due to the guidance of the plastic mass and the angle of the insert, which only need to be separated into the individual, crimped fiber pieces, before the crimp is reduced or eliminated by the weight of the thread-like intermediate products, which increases with their length.
  • the thin outlet grooves and the entire nozzle head can be easily cleaned, since only the insert has to be removed and all surfaces to be cleaned are then easily accessible.
  • a simple round-strand die head of a conventional laboratory extrusion can also be used be converted to produce the crimped fiber pieces by attaching such an insert directly in the mouth of the nozzle head, for example screwed.
  • exit grooves should be designed in such a way that the cross-section of the exiting, thread-like intermediate products deviates as much as possible from the circular cross-section, since a very strong twisting or crimping of the tobacco threads can be achieved by the internal stresses of the product during cooling from the plastic to the solid state .
  • a particularly good crimp of the fiber pieces results if they have a flat, rectangular to slightly lenticular cross-section when they emerge from the nozzle head and are cut into pieces of approx. 10 to 20 mm long by a rotating knife immediately before the crimp occurs the weight of the crimped fiber pieces, which increases with the fiber length, is smoothed (pulled straight).
  • a further improvement in the crimping of the fiber pieces can be achieved by designing the rotating knives or the receiving device for the rotating knives in a propeller-like manner. Due to the turbulent air turbulence and the mechanical stress on impact with the propeller-shaped knives, the still formable fiber sections are given an even more irregular, spatial contour.
  • the finished, crimped fiber pieces have a humidity of approx. 10 to 12% after cooling from the temperature between 130 and 160 ° C, as is usually the case in the nozzle head, to the ambient temperature, so that no additional drying process is necessary.
  • the crimped fiber pieces should have a thickness of 0.1 to 0.3 mm, in particular 0.15 to 0.25 mm, a width of 0.4 to 3 mm, in particular 0.6 to 1.5 mm, and an elongated length from 5 to 40 mm, in particular 8 to 20 mm; They can be made from tobacco particles with a maximum particle size of 0.5 mm (that is, tobacco particles that pass through a sieve with a mesh size of 0.5 mm) with the addition of binders and the additives customary in tobacco processing and without further treatment for cutting or Smoking tobacco can be added.
  • the device shown in FIG. 1, generally indicated by reference number 10, for producing crimped fiber pieces from reprocessed tobacco has a mixer 12 with a housing 14 and a rotating mixing tool 16, which is rotated via a drive motor 18.
  • the mixer 12 is supplied with the components required for the reprocessing of tobacco dust and / or tobacco waste, namely the tobacco dust, binder, water and the additives customary in the tobacco industry, for example flavorings, fillers, fire-influencing substances, color-influencing substances etc.
  • the mixed, pulverulent raw material discharged from the mixer 12 passes via a hopper 22 into an extruder 20, at the nozzle head 24 of which thread-like intermediate products emerge. These thread-like intermediate products of the nozzle head 24 are cut into the crimped tobacco threads by a rotating knife 26, which is rotated by a drive motor 28.
  • the nozzle head 24 of the extruder 20 has a stepped, cylindrical outlet sleeve 30, which consists of a cylindrical inlet region 30a and a subsequent cylindrical outlet region 30b, which has a larger inner diameter than the inlet region 30a.
  • An insert 32 which can be seen in particular in FIG. 5, is arranged in the outlet sleeve 30 of the nozzle head 24.
  • This insert 32 has a cylindrical inlet area 32a, the outer diameter of which is somewhat smaller than the inner diameter of the inlet area 30a of the outlet sleeve 30, an adjoining, approximately cylindrical transition area 32b and a frustoconically widening end area 32c, the end face of which is flush with the end face of the outlet sleeve 30.
  • the cylindrical inlet region 32a of the insert 32 is hollow, that is to say it has a cylindrical, continuous bore 32d, as can be seen in FIGS. 2 and 5.
  • the transition region 32b and the beginning of the frustoconical end region 32c are provided with four axially extending elongated holes 32e (see also FIG. 6) which connect the bore 32d to the outer surface of this region of the insert 32.
  • the end region of the end region 32c lying again on a cylinder surface in the illustrated embodiment is flat, rectangular to slightly lenticular outlet grooves 34 (see also Figures 3 and 4).
  • the frustoconical end region 32c has an opening angle of approximately 30 to 120 °, ie if, according to the illustration in FIGS. 2 and 5, the conical surface extends at an angle of approximately 15 to 60 ° to the cylinder axis . Particularly good results were obtained at an angle of 22.5 ° between the cylinder axis and the frustoconical surface.
  • the insert 32 is screwed into the outlet sleeve 30 by means of the hexagon 36, which in turn is then screwed into the mouth of the nozzle head 24 of a suitable extruder.
  • the plasticized, tubular mass has a movement component running perpendicular to the cylinder axis, so that continuous, crimped threads emerge from the lenticular exit grooves 34, which split the thin-walled tube into individual threads, as can be seen in FIGS. 2 and 7.
  • the recycled tobacco mass therefore leaves the nozzle head 24 or, in a laboratory extruder, the outlet sleeve 30 as a thread-like, crimped intermediate product, which is cut by the rotating, propeller-like knife 26 into the crimped, short pieces of fiber before the crimping increases with the length of the threads Dead weight is reduced again or canceled entirely.
  • the filamentary intermediate products can also be divided into the crimped fiber pieces by a sharp jet from a fluid medium, for example an air jet.
  • the condition ⁇ ⁇ a 90 ° must be fulfilled.
  • exit edge between the exit grooves 34 on the one hand and the end face of the insert 32 on the other hand should be designed as a flow separation edge and therefore as sharp as possible.
  • the exit edge of the cylindrical outer sleeve 30 or of the nozzle head 24 opposite this sharp-edged tear-off edge is rounded and has a radius of 0.3 mm to 5 mm, in particular 0.1 mm to 2 mm; a radius of 0.7 mm is indicated in FIG.
  • the end face of the outer sleeve 30 or of the nozzle head 24 should be designed in such a way that the “tobacco thread” indicated by dash-dotted lines can curl outward without interference. In the embodiment according to FIG. 9, this is achieved by turning the end face.
  • the plasticized tobacco mass enters the gap between the conical insert 32 and the outer sleeve 30 or the nozzle head 24 on the other hand at a relatively low speed and becomes faster when the lenticular exit grooves 34 are reached accelerates.
  • the sharp-edged flow separation edge on the insert 32 and the rounded edge on the nozzle head 24 or on the outer sleeve 30 cause the emerging tobacco thread to lie against the rounded edge and thereby be deflected outwards; this results in a strong, unimpeded crimp, which leads to the desired shapes of the fiber pieces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Nonwoven Fabrics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Claims (13)

1. Dispositif pour la fabrication de fragments de fibres frisés à partir de tabac retraité, avec
a) un mélangeur (12) pour de la poussière de tabac et/ou des débris de tabac, des liants et éventuellement des additifs,
b) une extrudeuse (20) pour le mélange obtenu,
c) une tête de filière (24) sur l'extrudeuse (20) pour la réalisation de produits intermédiaires filiformes, et
d) un dispositif de séparation (26) pour les produits intermédiaires filiformes sortants placé immédiatement en avant de la tête de filière (24), caractérisé en ce que
e) la tête de filière (24) comprend un insert (32) constitué par une section initiale (32a, 32b) et une section terminale (32c) s'élargissant en tronc de cône, que
f) la surface extérieure de la section terminale (32c) en forme de tronc de cône est munie, dans la zone frontale, de rainures de sortie (34) et que
g) les rainures de sortie (34) présentent une section transversale plate qui s'écarte de la forme circulaire.
2. Dispositif selon la revendication 1, caractérisé en ce que l'insert (32) est disposé dans l'embouchure de la tête de filière (24).
3. Dispositif selon la revendication 1, caractérisé en ce que l'insert (32) est disposé dans une douille extérieure (30) ayant la forme d'un cylindre creux et que la douille extérieure (30) est fixée dans l'embouchure de la tête de filière (24).
4. Dispositif selon la revendication 3, caractérisé en ce que l'insert (32) est vissé dans la douille extérieure (30).
5. Dispositif selon l'une des revendications 3 ou 4, caractérisé en ce que la douille extérieure (30) est vissée dans l'embouchure de la tête de filière (24).
6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la section terminale (32c) de l'insert (32) qui s'élargit en tronc de cône forme avec l'axe central de l'insert (32) un angle d'environ 25 à 65°, et notamment de 40 à 50°.
7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les rainures de sortie (34) présentent une section transversale rectangulaire à légèrement lenticulaire.
8. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le dispositif de séparation est constitué par une lame rotative (28) de type hélice.
9. Dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le dispositif de séparation est constitué par un puissant jet d'un milieu fluide.
10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le dispositif de séparation (26) est placé à une distance d'environ 10 à 20 mm de la tête de filière (24).
11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'arête de sortie entre les rainures de sortie (34) et la face frontale de la section terminale tronconique (32c) est conformée en arête vive de détachement.
12. Dispositif selon la revendication 11, caractérisé en ce que l'arête de la tête de filière (24) ou de la douille extérieure (30) placée en face de l'arête de détachement de courant est arrondie.
13. Dispositif selon la revendication 12, caractérisé en ce que le bord a un rayon de 0,3 mm à 5 mm et notamment de 0,5 mm à 2 mm.
EP84112877A 1983-10-28 1984-10-25 Dispositif pour la fabrication de filaments ondulés à partir de tabac reconstitué Expired EP0143335B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84112877T ATE28259T1 (de) 1983-10-28 1984-10-25 Vorrichtung zur herstellung von gekraeuselten faserstuecken aus wiederaufbereitetem tabak.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3339247 1983-10-28
DE3339247A DE3339247C1 (de) 1983-10-28 1983-10-28 Verfahren und Vorrichtung zur Herstellung von gekraeuselten Faserstuecken aus wiederaufbereitetem Tabak

Publications (2)

Publication Number Publication Date
EP0143335A1 EP0143335A1 (fr) 1985-06-05
EP0143335B1 true EP0143335B1 (fr) 1987-07-15

Family

ID=6213018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112877A Expired EP0143335B1 (fr) 1983-10-28 1984-10-25 Dispositif pour la fabrication de filaments ondulés à partir de tabac reconstitué

Country Status (5)

Country Link
US (1) US4598721A (fr)
EP (1) EP0143335B1 (fr)
AT (1) ATE28259T1 (fr)
DE (2) DE3339247C1 (fr)
ES (1) ES537079A0 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4880018A (en) * 1986-02-05 1989-11-14 R. J. Reynolds Tobacco Company Extruded tobacco materials
US4724850A (en) * 1986-02-05 1988-02-16 R. J. Reynolds Tobacco Company Process for providing tobacco extender material
US4730629A (en) * 1986-03-17 1988-03-15 R. J. Reynolds Tobacco Company Process for providing tobacco extender material
US4702264A (en) * 1986-08-11 1987-10-27 R. J. Reynolds Tobacco Company Tobacco leaf processing
US4768527A (en) * 1987-01-23 1988-09-06 R. J. Reynolds Tobacco Company Tobacco material processing
US4821749A (en) * 1988-01-22 1989-04-18 R. J. Reynolds Tobacco Company Extruded tobacco materials
DE3819534C1 (fr) * 1988-06-08 1989-12-07 B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De
US5129409A (en) * 1989-06-29 1992-07-14 R. J. Reynolds Tobacco Company Extruded cigarette
US5271728A (en) * 1989-11-21 1993-12-21 Buhler Ag Apparatus with detachable teeth for pressing out raw materials
DE4005656C2 (de) * 1990-02-22 1994-05-26 Bat Cigarettenfab Gmbh Verfahren und Vorrichtung zur Herstellung einer Tabak-Folie
DE4117307C1 (fr) * 1991-05-27 1992-06-04 B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De
CA2466075C (fr) * 1992-03-25 2007-05-01 Japan Tobacco, Inc. Matiere entrant dans la composition d'une cigarette; la cigarette ainsi constituee
DE4218666C1 (de) * 1992-06-05 1993-12-16 Bat Cigarettenfab Gmbh Verfahren und Vorrichtung zur Strukturierung von Tabakmaterialien
DE59506845D1 (de) * 1995-01-28 1999-10-21 Friedrich Priehs Verfahren zur herstellung eines rauchbaren tabakproduktes
DE10007485A1 (de) * 2000-02-18 2001-08-23 Hauni Maschinenbau Ag Verfahren und Vorrichtung zur Verwertung von Tabakstaub
GB0011351D0 (en) * 2000-05-12 2000-06-28 British American Tobacco Co Tobacco reconstitution
DE10065132A1 (de) * 2000-12-29 2002-07-04 Hauni Maschinenbau Ag Verfahren zur Herstellung von Agglomeraten und entsprechendes Agglomerat
CN107307468A (zh) 2011-05-31 2017-11-03 菲利普莫里斯生产公司 用于吸烟制品的烟条
ITRM20130684A1 (it) * 2013-12-12 2015-06-13 Stefano Bolla Contenitore ecocompatibile per riciclaggio mozziconi di sigaretta.
US20200035118A1 (en) 2018-07-27 2020-01-30 Joseph Pandolfino Methods and products to facilitate smokers switching to a tobacco heating product or e-cigarettes
US10897925B2 (en) 2018-07-27 2021-01-26 Joseph Pandolfino Articles and formulations for smoking products and vaporizers
KR102389825B1 (ko) * 2018-10-17 2022-04-25 주식회사 케이티앤지 에어로졸 생성 물품
CN110301676A (zh) * 2019-06-27 2019-10-08 广东中烟工业有限责任公司 一种防止烟丝掉落的加热不燃烧烟草基体及其应用
CN112971198A (zh) * 2019-12-02 2021-06-18 秦皇岛烟草机械有限责任公司 一种新型滚刀式烟草切丝机刀辊体

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Publication number Priority date Publication date Assignee Title
US3209763A (en) * 1961-04-05 1965-10-05 Lorillard Co P Method for making tobacco products
DE1529846A1 (de) * 1961-07-11 1970-01-02 Deutsche Grammophon Gmbh Presskopf fuer Doppelschneckenextruder
GB983928A (en) * 1962-05-03 1965-02-24 British American Tobacco Co Improvements relating to the production of tobacco smoking materials
US3313003A (en) * 1963-10-04 1967-04-11 Brown & Williamson Tobacco Extrusion dies for plastic materials
US3298062A (en) * 1964-05-07 1967-01-17 Brown & Williamson Tobacco Extrusion dies
GB1444816A (en) * 1972-12-22 1976-08-04 Tamag Basel Ag Extruder nozzle for moulding tobacco pulp
LU74233A1 (fr) * 1976-01-23 1977-07-27
FR2481891A1 (fr) * 1980-05-06 1981-11-13 Creusot Loire Dispositif de fabrication de filaments de tabac

Also Published As

Publication number Publication date
US4598721A (en) 1986-07-08
ES8506430A1 (es) 1985-08-01
ATE28259T1 (de) 1987-08-15
DE3339247C1 (de) 1985-05-09
ES537079A0 (es) 1985-08-01
EP0143335A1 (fr) 1985-06-05
DE3464687D1 (en) 1987-08-20

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