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1. WO1997012746 - METHOD OF CARRYING OUT CONTINUOUS PREPARATION PROCESSES ON TIGHTLY MESHING EXTRUDERS ROTATING IN THE SAME SENSE

Publication Number WO/1997/012746
Publication Date 10.04.1997
International Application No. PCT/EP1996/003531
International Filing Date 09.08.1996
Chapter 2 Demand Filed 26.02.1997
IPC
B29B 7/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
B29C 47/40 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
47Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
08Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
38using screws
40using at least two intermeshing screws
CPC
B29B 7/007
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
002Methods
007for continuous mixing
B29B 7/48
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
30continuous, with mechanical mixing or kneading devices
34with movable mixing or kneading devices
38rotary
46with more than one shaft
48with intermeshing devices, e.g. screws
B29C 48/04
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
04Particle-shaped
B29C 48/405
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
395using screws surrounded by a cooperating barrel, e.g. single screw extruders
40using two or more parallel screws ; or at least two parallel non-intermeshing screws; , e.g. twin screw extruders
405Intermeshing co-rotating screws
Applicants
  • KRUPP WERNER & PFLEIDERER GMBH [DE]/[DE] (AllExceptUS)
  • HEIDEMEYER, Peter [DE]/[DE] (UsOnly)
  • HÄRING, Erwin [DE]/[DE] (UsOnly)
  • MUNZ, Rainer [DE]/[DE] (UsOnly)
  • HERTER, Rainer [DE]/[DE] (UsOnly)
  • BURKHARDT, Ulrich [DE]/[DE] (UsOnly)
Inventors
  • HEIDEMEYER, Peter
  • HÄRING, Erwin
  • MUNZ, Rainer
  • HERTER, Rainer
  • BURKHARDT, Ulrich
Agents
  • RAU, SCHNECK & HÜBNER
Priority Data
195 36 289.629.09.1995DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR DURCHFÜHRUNG KONTINUIERLICHER AUFBEREITUNGSPROZESSE AUF GLEICHSINNIG DREHENDEN, DICHTKÄMMENDEN EXTRUDERN
(EN) METHOD OF CARRYING OUT CONTINUOUS PREPARATION PROCESSES ON TIGHTLY MESHING EXTRUDERS ROTATING IN THE SAME SENSE
(FR) PROCEDE RELATIF A L'EXECUTION D'OPERATIONS DE PREPARATION EN CONTINU SUR DES EXTRUDEUSES POURVUES DE VIS TOURNANT DANS LE MEME SENS ET A ENTRECROISEMENT SERRE
Abstract
(DE)
Bei einem Verfahren zur Durchführung von kontinuierlichen Aufbereitungsprozessen auf gleichsinnig drehenden, dichtkämmenden Extrudern, wie Doppelschnecken- und Mehrwellenschneckenextrudern, wird der Extruder mit einer Schneckendrehzahl von mindestens 800 Upm bei gleichzeitiger Erhöhung der einleitbaren sogenannten 'Drehmomentdichte' (Md/a3) von mindestens 11 Nm/cm3 und einer Volumigkeit (Da/Di) von mindestens 1,5 betrieben.
(EN)
The invention concerns a method of carrying out continuous preparation processes on tightly meshing extruders rotating in the same sense, such as double screw and multi-shaft screw-type extruders. The extruder is operated at a screw speed of rotation of at least 800 rpm whilst the so-called 'torque density' (Md/a3) which can be induced is increased by at least 11 Nm/cm3 and the ratio between the screw outer diameter and screw inner diameter (Da/Di) is at least 1.5.
(FR)
La présente invention concerne un procédé relatif à l'exécution d'opérations de préparation sur des extrudeuses pourvues de vis tournant dans le même sens et à entrecroisement serré telles qu'extrudeuses à double vis et extrudeuses à vis à plusieurs arbres. L'extrudeuse fonctionne à une vitesse de rotation des vis d'au moins 800 tr/min avec une augmentation simultanée de la 'densité de couple' (Md/a3) pouvant être induite s'élevant au moins à 11 Nm/cm3 et avec un rapport entre le diamètre extérieur et le diamètre intérieur (Da/Di) des vis d'au moins 1,5.
Also published as
MXPA/a/1998/002496
NO19981327
TR1998/00439
Latest bibliographic data on file with the International Bureau