Device for filling an extruder with pretreated thermoplastic...

B - Operations – Transporting – 29 – C

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Details

B29C 47/10 (2006.01) B29B 17/00 (2006.01) B29C 47/58 (2006.01)

Patent

CA 2595928

A device for filling an extruder, which can optionally be an external extruder, with pretreated thermoplastic plastics material, in particular PET, has at least one evacuatable container (1) in which moving, in particular rotating, tools (7) are provided for pretreatment of the material. This pretreatment comprises drying and, optionally, crystallisation. Each container (1) has a discharge opening (18) for the flowable material (12), which discharge opening (18), with respect to the material, is fluidically connected to the filling opening (35) of the extruder (36). The device preferably has only a single container stage, the outlet of which is fluidically connected to a coupling (69), which is connectable to the filling opening (35) of the extruder (36), via a transfer section (31) maintaining the flowable state of the material (12) pretreated in the container (1) (fig. 1).

L'invention concerne un dispositif de remplissage d'une extrudeuse, pouvant être une extrudeuse étrangère, avec du matériau plastique thermoplastique prétraité, notamment du PET, comportant au moins un contenant vidangeable (1) contenant des outils mobiles (7), notamment rotatifs, destinés à prétraiter le matériau. Le prétraitement comporte le séchage et éventuellement la cristallisation. Chaque contenant (1) comporte une ouverture de sortie (18) destinée au matériau (12) se trouvant dans un état d'aptitude à l'écoulement, en communication fluidique avec l'ouverture de remplissage (35) de l'extrudeuse (36). Le dispositif selon l'invention ne comporte de préférence qu'un étage de contenant dont la sortie se trouve en communication fluidique avec un raccord (69) pouvant être connecté à l'ouverture de remplissage (35) de l'extrudeuse (36), par l'intermédiaire d'une voie de transfert (31) conservant l'état d'aptitude à l'écoulement du matériau (12) prétraité dans le contenant (1).

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