EP0330102B2 - Procédé et appareil pour la fabrication de granulés de propergol - Google Patents

Procédé et appareil pour la fabrication de granulés de propergol Download PDF

Info

Publication number
EP0330102B2
EP0330102B2 EP89102844A EP89102844A EP0330102B2 EP 0330102 B2 EP0330102 B2 EP 0330102B2 EP 89102844 A EP89102844 A EP 89102844A EP 89102844 A EP89102844 A EP 89102844A EP 0330102 B2 EP0330102 B2 EP 0330102B2
Authority
EP
European Patent Office
Prior art keywords
cutting plate
strands
strand
cutting
propellant
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 - Lifetime
Application number
EP89102844A
Other languages
German (de)
English (en)
Other versions
EP0330102B1 (fr
EP0330102A1 (fr
Inventor
Dietmar. Dipl.-Chem. Dr. Müller
Helmut Bauer
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6347801&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0330102(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Publication of EP0330102A1 publication Critical patent/EP0330102A1/fr
Application granted granted Critical
Publication of EP0330102B1 publication Critical patent/EP0330102B1/fr
Publication of EP0330102B2 publication Critical patent/EP0330102B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B30B11/227—Means for dividing the extruded material into briquets
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • C06B21/0075—Shaping the mixture by extrusion

Definitions

  • the invention relates to a method for producing propellant granules from propellant strands of small diameter, which are continuously extruded into several and are placed individually behind the extruder on a moving base, the base forming a binding section for the propellant charge strands, and which are fed by means of the base to a cutting plate with a number of guide holes corresponding to the number of strands, by means of forces acting essentially axially parallel on its circumference inserted into the guide holes and, when emerging from the guide holes, are cut to the desired short length at the same time by means of cutting knives running behind the cutting plate. Furthermore, the invention is directed to an apparatus for performing the method.
  • Single-base propellant powder consisting of nitrocellulose, optionally with the addition of dinitrotuol, dibasic propellant powder, which additionally contains nitroglycerin and / or diglycol dinitrate, and tri-base propellant powder, which additionally contain nitroguanidine, can be processed continuously in an extruder into propellant strands using appropriate process engineering parameters (DE A1 30 44 577).
  • the nitrocellulose serves as a binder, instead or or additionally plastic binders.
  • the throughput of an extruder is between 80 and 100 kg / h.
  • propellant strands of small diameter for. B. to produce between 0.5 and 4 mm
  • molding heads with up to 100 nozzle holes are used on the extruder.
  • head pelletizers can be used to produce granules from such propellant charge strands, which consist of a rotor rotating in front of the molding head with several cutting knives and separate bodies of short cutting length from the strands.
  • the invention has for its object to provide a method and an apparatus which allows the production of uniform granules with close tolerance at high performance.
  • the object of the invention is achieved by that the propellant charge strand is cut to length after leaving the extruder, the length of which is a multiple of the desired cutting length, that the propellant charge strand is transferred from the base to a slope and is fed to the cutting plate thereon with the aid of its own weight and that the forces for importing it into the guide holes are applied by means of peripheral brushes designed as friction elements.
  • the propellant charge strands are separated behind the extruder and placed on a base.
  • the strand runs through a setting line on this base, on which it receives sufficient dimensional stability.
  • the base which exerts practically no forces on the propellant charge strands
  • the strands reach the downhill section, on which they reach the cutting insert largely under their own weight, that is again without or largely without external force from conveying means or the like, and reach their guide holes .
  • all strands are cut to the desired size, the cutting length being adjustable by means of the rotational speed of the cutting knives.
  • the strands Due to the gentle transport of the strands, the strands remain in shape and have reached a shape stability when the cutting knives are reached, which leads to a clean, in particular straight cut at a high rotational speed of the cutting knives.
  • the good dimensional stability also leads - assuming a constant, high rotational speed of the cutting knives - to a narrowly tolerated cutting length on all strands.
  • the propellant charge strands after leaving the extruder are cut into strand sections, the length of which is a multiple of the desired cutting length.
  • a strand section which can have a length of up to 1.5 m, for example, can also be better controlled at high processing speeds.
  • the rod sections are preferably introduced into the guide holes of the cutting plate at the end of the downhill section by means of frictional forces acting on their circumference which are essentially axially parallel and applied by rotating brushes .
  • Circumferential brushes have the advantage that they exert frictional forces acting on the strand section essentially only axially parallel, specifically each individual bristle only in a linear manner, pressure forces due to the elastic deflection of the bristles being avoided. Nevertheless, it is ensured that all strand sections are fed to the knives at the same feed rate.
  • the inclination of the downhill section is adjusted depending on the weight and consistency of the strand section such that the strand sections are only moved in the direction of the downhill slope by means of an additional but small force.
  • the invention is based on a device with an extruder producing a plurality of endless propellant charge strands of small diameter, an underlay moved behind the extruder in the transport direction and receiving the propellant charge strings individually next to one another, and an adjoining pad Cutting plate with a number of guide holes corresponding to the number of strands, behind which the cutting knives passing the guide holes at a distance from them, all the propellant charge strands at the same time extend to the length of granules, and an insertion device arranged in front of the cutting plate, by means of which in each case one strand enters a guide hole the insert is insertable.
  • such a device is characterized in that a separating device for the production of strand sections is arranged above the base near the end of the task, that a guide for each propellant strand is arranged behind the base with a gradient that allows it to move with its own weight and that The insertion device is formed by rotating brushes designed as friction elements.
  • the base is a rotating conveyor, which is connected to a the number of propellant charge strings corresponding number of receptacles extending in the transport direction is provided for each strand section.
  • the conveyor is a conveyor belt with grooves running in the transport direction, each of which receives a propellant charge strand or a strand section.
  • the guide adjoining the base is formed from channels or tubes which run at a slope to the cutting plate arranged below the base.
  • the slope of the guide can be changed so that a state can be set in which the strand sections are just not slipping, but can be moved with a small axial force with the aid of the dead weight.
  • the brushes which are preferably arranged in pairs and each receive a strand section between them and insert this into a guide hole on the cutting plate, bring with them the advantages mentioned above.
  • the strand sections between the guides and the cutting plate, in particular on both sides of the diametrically engaging friction elements, on linear contact surfaces, for. B. are guided in prisms.
  • the guide holes in the cutting plate are arranged on one or more concentric circles.
  • the guide holes are preferably arranged in groups on a line running along a circular edge, so that the individual cutting knife with its cutting edge successively cuts the individual strands of a group and thus on the one hand uniformly loads the knife drive and on the other hand uniform wear is given on the knife.
  • each group of guide holes is assigned a group of rotating brushes arranged in pairs as friction elements which are driven synchronously.
  • approximately 100 propellant powder strands can be processed into granules at a speed in the range of 1 m / s.
  • the cutting knives are expediently arranged on the circumference of a rotor, the configuration preferably being such that the cutting plate forms the end of a collecting container in which the rotor rotates and that the collecting container can be lifted off the cutting plate.
  • the granulate falls directly behind the cutting plate into the collecting container and can either be removed continuously or in batches via an outlet.
  • the container can be lifted off the stationary cutting plate.
  • the collecting container also forms a safety protection for the rotor.
  • FIG. 1 shows an extruder 1 for processing single-, two- or three-base propellant powder, which has a molding head 2 at the end of the mixing and kneading section for producing propellant strands.
  • the molding head 2 is designed in such a way that a plurality of parallel propellant charge strands are simultaneously generated, which advantageously run side by side, which can be achieved, for example, with a flat nozzle-like molding head.
  • the propellant charge strands 3 leaving the extruder arrive on a base 4, which is formed by the upper run 5 of a rotating conveyor belt 6.
  • the conveyor belt 6 runs in the direction of the arrow indicated and takes the individual Propellant charge strands 3 in a recording, for. B. in grooves that run in the direction of transport. In this way, the still soft plastic propellant strands are transferred and transported gently.
  • a separating device 7 is arranged in the area of the feed end of the conveyor 6, which cuts the propellant charge strands 3 into strand sections.
  • the strand sections can have a length in the range of one meter.
  • the strand sections lying in the grooves of the conveyor belt 6 arrive behind the delivery end 8 of the conveyor 6 on a downward slope 9, on which they travel essentially under their own weight.
  • a number of guides 10, for example in the form of troughs or tubes, which correspond to the number of strand sections and which feed the strand sections to the actual pelletizer 11 are arranged on the downhill section 9.
  • the guides 10, which are expediently arranged on a common frame, can be adjusted in their inclination in order, depending on the coefficient of friction and the weight of the strand sections, to achieve such extensive destabilization that a lower external force is sufficient for locomotion.
  • the pelletizer 11 has a stationary cutting plate 12 which carries a multiplicity of guide holes 13 which align with the guides 10 on the downward slope.
  • a rotor 14 is arranged behind the cutting plate 12 and has a plurality of cutting knives 15 on its circumference at the level of the guide holes 13, which sweep past the cutting plate 12 and at a distance from it at high speed.
  • the rotor 14 is mounted with its axis 16 in a bushing 17 of the stationary cutting plate 12.
  • the collecting container 18 is displaceable in the direction of the arrow 19 and can be lifted off the cutting plate 12 in this way.
  • the strand sections fed to the guide holes 13 via the guides 10 are cut to length by the knives 15 of the rotating rotor into short propellant charge bodies which fall into the collecting container 18. Due to the inclined position shown in FIG. 1, this can be emptied continuously via a discharge opening (not shown).
  • circumferential friction elements are arranged in pairs between the guides 10 arranged on the slope 9 and the cutting plate 12, which act diametrically on the strand sections and feed them to the cutting plate 12 at a constant speed.
  • figure 3 which shows an end view of another embodiment of the cutting plate 12
  • a plurality of guide holes are combined into a group and each group of guide holes is arranged on a line corresponding to a circular edge 20.
  • three groups are each arranged on circular edges with a different radial distance from the center of the cutting plate.
  • Each of these three groups is assigned a drive unit 21, which in turn drives the friction elements for all three groups.
  • Each group of guide holes 13 is assigned a feed unit 22 with a number of friction elements 23 corresponding to the number of guide holes in this group. In the exemplary embodiment shown in FIG. 4, there are a total of eight guide holes 13.
  • the feed unit consists of friction elements 23 arranged in pairs, which sit on a common axis 25 and are driven from the center via a pulley 24, which is part of the drive unit (FIG. 5).
  • Each pair of friction elements is assigned to a guide hole 13 and, with the apex faces facing one another, engages the strand section at diametrical locations.
  • the friction elements 23 can be designed, for example, as rotating brushes.
  • a synchronous rotation of the friction elements 23 arranged in pairs is produced in that the pulleys 24 are wrapped by a common drive belt 26 in such a way that they rotate in opposite directions. They ensure that all strand sections of the cutting plate or the rotating cutting knives 15 are fed at the same speed.
  • the cutting length can consequently be changed by varying the feed speed generated by the rotating friction elements 23 and / or the rotating speed of the rotor 14.
  • FIG. 6 shows an enlarged view of a pair of friction elements 23 in the form of brush rollers, between which the strand section 27 is transported.
  • prism guides 28 are arranged on the side of the brush rollers, and the strand section only abuts in a linear manner. These prism guides extend from the end of the guides 10 (FIG. 1) to the cutting plate 12.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (15)

  1. Procédé pour la fabrication de granulés de charge propulsive à partir de cordons de charge propulsive de petit diamètre, qui sont extrudés de façon continue en nombre et déposés séparément, derrière l'extrudeuse, sur un support en mouvement, en sorte que le support constitue un trajet de prise pour les cordons de charge propulsive, et qui sont amenés au moyen du support a une matrice de découpage munie d'un nombre de trous de guidage correspondant au nombre des cordons, introduits dans les trous de guidage de la matrice de découpage au moyen de forces agissant sur leur périphérie essentiellement parallèlement à l'axe et, à la sortie des trous de guidage, sont coupés à la longueur courte souhaitée au moyen de lames de coupe tournant derrière la matrice de découpage, caractérisé en ce qu'après avoir quitté l'extrudeuse les cordons de charge propulsive sont tronçonnés en sections de cordons dont la longueur est un multiple de la longueur de coupe souhaitée, que les cordons de charge propulsive sont transmis du support à un trajet en pente sur lequel ils sont amenés avec le concours de leur propre poids à la matrice de découpage, et que les forces d'introduction dans les trous de guidage sont appliquées au moyen de brosses tournantes réalisées en tant qu'organes de friction.
  2. Procédé selon la revendication 1, caractérisé en ce que l'inclinaison du trajet en pente est réglée en fonction du poids et de la consistance de la section de cordon, de telle sorte que les sections de cordons ne se déplacent qu'au moyen d'une force additionnelle, néanmoins faible, dans le sens de la pente.
  3. Procédé selon l'une des revendications 1 et 2, caractérisé en ce que les forces de friction sont exercées sur les sections de cordons à la fin du trajet en pente.
  4. Dispositif pour la mise en oeuvre du procédé selon l'une des revendications 1 à 3, comprenant une extrudeuse produisant une multiplicité de cordons de charge propulsive sans fin de petit diamètre, un support en mouvement dans un sens de transport derrière l'extrudeuse, recevant les cordons de charge propulsive séparément les uns des autres, une matrice de découpage placée à la suite du support et munie d'un nombre de trous de guidage correspondant au nombre des cordons (10), derrière laquelle tournent des lames de coupe (15) qui passent en regard des trous de guidage, à distance de ceux-ci, et tronçonnent simultanément tous les cordons de charge propulsive à la longueur des granulés, et un dispositif d'introduction disposé devant la matrice de découpage, au moyen duquel un cordon est introduit à chaque fois dans un trou de guidage de la matrice de découpage, caractérisé en ce qu'un dispositif de séparation (7) pour la réalisation de sections de cordons est disposé au-dessus du support (4) au voisinage de l'extrémité de chargement, que pour chaque cordon de charge propulsive est disposé derrière le support (4) un guide (10) présentant une pente qui permet son mouvement avec le concours de son propre poids, et que le dispositif d'introduction est formé de brosses tournantes (23) réalisées en tant qu'organes de friction.
  5. Dispositif selon la revendication 4, caractérisé en ce que le support (4) est un transporteur sans fin (6) muni d'un nombre de logements correspondant au nombre de cordons de charge propulsive (3), s'étendant dans la direction de transport, chacun pour une section de cordon.
  6. Dispositif selon l'une des revendications 4 et 5, caractérisé en ce que le transporteur (6) est une bande transporteuse munie de rainures s'étendant dans la direction de transport.
  7. Dispositif selon l'une des revendications 4 à 6, caractérisé en ce que le guide (10) suivant le support (4) est formé de gouttières ou de tubes qui s'étendent selon une pente vers la matrice de découpage (12) disposée au-dessous du support (4).
  8. Dispositif selon l'une des revendications 4 à 7, caractérisé en ce que la pente du guide (10) peut être modifiée.
  9. Dispositif selon l'une des revendications 4 à 8, caractérisé en ce que les brosses (23) sont disposées par paires et reçoivent à chaque fois entre elles une section de cordon.
  10. Dispositif selon l'une des revendications 4 à 9, caractérisé en ce que les sections de cordons (27) sont guidées entre les guides (10) et la matrice de découpage (12), en particulier de part et d'autre des brosses (23) qui sont diamétralement en prise avec elle, selon des surfaces de contact en forme de lignes, par exemple dans des prismes (28).
  11. Dispositif selon l'une des revendications 4 à 10, caractérisé en ce que les trous de guidage (13) de la matrice de découpage (12) sont disposés sur un ou plusieurs cercles concentriques.
  12. Dispositif selon l'une des revendications 4 à 10, caractérisé en ce que les trous de guidage (13) sont disposés en groupes sur une sécante de cercle.
  13. Dispositif selon l'une des revendications 4 à 12, caractérisé en ce qu'à chaque groupe de trous de guidage (13) est associé un groupe de brosses tournantes disposées par paires en tant qu'organes de friction (23), qui sont entraînées en synchronisme.
  14. Dispositif selon l'une des revendications 4 à 13, caractérisé en ce que les lames de coupe (15) sont disposées à la périphérie d'un rotor (14).
  15. Dispositif selon la revendication 14, caractérisé en ce que la matrice de découpage (12) forme la fermeture d'un récipient collecteur (18) dans lequel tourne le rotor (14), et que le récipient collecteur peut être retiré de la matrice de découpage (12).
EP89102844A 1988-02-20 1989-02-18 Procédé et appareil pour la fabrication de granulés de propergol Expired - Lifetime EP0330102B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3805317 1988-02-20
DE3805317A DE3805317A1 (de) 1988-02-20 1988-02-20 Verfahren und vorrichtung zur herstellung von treibladungsgranulat

Publications (3)

Publication Number Publication Date
EP0330102A1 EP0330102A1 (fr) 1989-08-30
EP0330102B1 EP0330102B1 (fr) 1992-12-16
EP0330102B2 true EP0330102B2 (fr) 1996-08-21

Family

ID=6347801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89102844A Expired - Lifetime EP0330102B2 (fr) 1988-02-20 1989-02-18 Procédé et appareil pour la fabrication de granulés de propergol

Country Status (6)

Country Link
US (1) US5068066A (fr)
EP (1) EP0330102B2 (fr)
AU (1) AU622151B2 (fr)
BR (1) BR8900734A (fr)
DE (2) DE3805317A1 (fr)
IN (1) IN170887B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5251531A (en) * 1989-04-25 1993-10-12 Wnc-Nitrochemie Gmbh Method and apparatus to prepare monobasic propellant charge powders with alcohol and ether as solvents
WO2019195550A1 (fr) * 2018-04-04 2019-10-10 Metal Powder Works, LLC Système et procédé de fabrication de poudres à partir de matériaux ductiles
US11578014B1 (en) * 2019-12-30 2023-02-14 The United States Of America As Represented By The Secretary Of The Army Process for preparing pyrophoric foam granules

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE189009C (fr) *
DE307138C (fr) * 1900-01-01
AT144379B (de) * 1934-06-26 1936-01-25 Kretschmer & Co F G Schneidvorrichtung zum Ablängen von Röhren und Stäben beliebigen Profiles aus explosiven Stoffen.
GB829947A (en) * 1955-05-23 1960-03-09 France Etat Driving arrangement particularly for propellant powder cutting machines
AT251461B (de) * 1963-11-04 1967-01-10 Eldima Ag Schneidvorrichtung zum Zerstückeln von strang- oder stabförmigem Material
GB1323571A (en) * 1970-04-15 1973-07-18 Hyde K Apparatus for cutting elongated material into a plurality of length
DE2161067C2 (de) * 1971-12-09 1973-09-20 Fa. Werner & Pfleiderer, 7000 Stuttgart Vorrichtung zum Abkühlen von aus einem Extruder austretenden Kunststoff strängen
US3969054A (en) * 1975-07-11 1976-07-13 The United States Of America As Represented By The Secretary Of The Army Length sensing single strand shuttle cutter apparatus for cutting propellant grain
DE2901018C2 (de) * 1979-01-12 1981-12-03 C.F. Scheer & Cie Gmbh & Co, 7000 Stuttgart Granulator zum Granulieren von Kunststoffsträngen
GB2107638B (en) * 1981-10-22 1985-11-13 Secr Defence Cutting apparatus for extruded materials
DE3242301A1 (de) * 1982-11-16 1984-05-17 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Verfahren und vorrichtung zur herstellung ein- oder mehrbasiger treibladungspulver
US4585600A (en) * 1984-11-28 1986-04-29 Hercules Incorporated Extrusion, conveyance, and cutting system
US4660475A (en) * 1985-07-31 1987-04-28 Morton Thiokol, Inc. Spooled propellant charge and method of manufacture thereof
DE3821311A1 (de) * 1988-06-24 1989-12-28 Werner & Pfleiderer Verfahren und vorrichtung zur sicherung des mischvorganges bei der herstellung strangfoermiger explosivstoffe und treibmittel in einem schneckenextruder

Also Published As

Publication number Publication date
AU622151B2 (en) 1992-04-02
US5068066A (en) 1991-11-26
DE58902984D1 (de) 1993-01-28
EP0330102B1 (fr) 1992-12-16
AU3013689A (en) 1989-08-24
DE3805317C2 (fr) 1991-05-23
IN170887B (fr) 1992-06-06
DE3805317A1 (de) 1989-08-24
EP0330102A1 (fr) 1989-08-30
BR8900734A (pt) 1989-10-17

Similar Documents

Publication Publication Date Title
AT243752B (de) Verfahren und Vorrichtung zur Herstellung von Gegenständen mit Borsten oder Zinken, z. B. Bürsten und Kämmen, aus thermoplastischen Kunststoffen
AT401637B (de) Vorrichtung zum formen des randes eines behälters aus thermoplastischem kunststoff
DE2813953A1 (de) Maschine zum schneiden und zumessen von bloecken oder stuecken aus rohgummi oder rohkautschuk
EP0330102B2 (fr) Procédé et appareil pour la fabrication de granulés de propergol
DE2139089A1 (de) Verfahren und Vorrichtung zum Ausrichten von Pflanzenblättern, insbesondere von Tabakblättern
EP0335916B1 (fr) Extrudeuse ainsi que procede pour la fabrication de pieces moulees manipulables en papier de rebut
EP0461545A2 (fr) Procédé et dispositif de production de pièces moulées
EP3430915B1 (fr) Dispositif de coupe d'article en forme de tige et de machine dotée d'un tel dispositif
DE2708216C2 (de) Vorrichtung zum Beschneiden eines Schreibstift-Strangpreßteiles
DE2405474A1 (de) Verfahren und vorrichtung zum herstellen von stapelfaserbaendern aus kabeln endloser fasern
DE2038300A1 (de) Brotschneidemaschine,vorzugsweise fuer breites Bauernbrot
DE1286472C2 (de) Streichmaschine fuer die Back- und Suesswarenindustrie
DE688944C (de) Verfahren und Vorrichtung zum Zerkleinern, Kneten en Massen
EP0107741B1 (fr) Organe de coupe pour barre de matière malléable en déplacement continu en particulier de masse de confiserie déformable
DE1212341B (de) Maschine zum Formen von Platten aus geerntetem Viehfutter
DE3704108A1 (de) Misch- und scherwalzwerk fuer plastifizierbares material
DE860475C (de) Vorrichtung zum Pressen von Massestraengen
DE1627948C3 (de) Vorrichtung zur Herstellung von Granulaten
AT206640B (de) Verfahren und Vorrichtung zum Verkitten von Fasern
DE1627948B2 (de) Vorrichtung zur herstellung von granulaten
DE3224205A1 (de) Uebergabevorrichtung
DE1296376B (de) Verfahren zur Herstellung von Gegenstaenden mit Borsten oder Zinken aus thermoplastischen Kunststoffen
DE1679822C (de) Verfahren und Vorrichtung zur Herstellung von Rohblöcken aus thermoplastischen Kunststoffen
DE2042862A1 (en) Dough extrusion and cutting - for prodn of chip type snack food
DE1042225B (de) Vorrichtung zum Granulieren von plastischen Massen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19890721

RBV Designated contracting states (corrected)

Designated state(s): BE CH DE FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19920504

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19921216

Ref country code: BE

Effective date: 19921216

REF Corresponds to:

Ref document number: 58902984

Country of ref document: DE

Date of ref document: 19930128

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19930228

Ref country code: CH

Effective date: 19930228

ITF It: translation for a ep patent filed

Owner name: DR. ING. A. RACHELI & C.

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930222

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26 Opposition filed

Opponent name: WNC-NITROCHEMIE GMBH

Effective date: 19930916

EAL Se: european patent in force in sweden

Ref document number: 89102844.1

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 19960821

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): BE CH DE FR GB IT LI NL SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: AUFRECHTERHALTUNG DES PATENTES IN GEAENDERTER FORM

ITF It: translation for a ep patent filed

Owner name: DR. ING. A. RACHELI & C.

ET3 Fr: translation filed ** decision concerning opposition
ET3 Fr: translation filed ** decision concerning opposition
GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)

Effective date: 19891224

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050207

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20050216

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050218

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20050221

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060219

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060425

Year of fee payment: 18

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060218

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20061031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060228

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070901