Apparatus for pre-treatment and subsequent plastification or...

B - Operations – Transporting – 29 – B

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Details

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

Patent

CA 2390199

An apparatus for pre-processing and subsequent plastification or agglomeration of synthetic plastic materials, in particular thermoplastic waste plastics for recycling purposes, has a receptacle (1) in which at least one comminuting tool (6) circulates. The housing (7) of a screw (8) is connected to the receptacle (1). The diameter (D) of the receptacle (1) is in the following relation with respect to the screw diameter (d): D = 10. .sqroot.K.d2, wherein D is the inner diameter of the receptacle in mm, d is the screw diameter in mm and K is a dimension-less constant which amounts to at least 190. Thereby the dwell times of the synthetic plastic material within the receptacle (1) are kept at optimal values. (Fig. 1)

La présente invention concerne un dispositif permettant de prétraiter, puis de plastifier ou d'agglomérer des matières plastiques, notamment de la matière plastique de déchet, thermoplastique, à des fins de recyclage. Ce dispositif comprend un récipient (1) dans lequel tourne au moins un outil de broyage (6). Le boîtier (7) d'une vis sans fin (8) est connecté audit récipient (1). Le diamètre D du récipient (1), par rapport au diamètre d de la vis sans fin, obéit à la relation (I), dans laquelle D représente le diamètre intérieur du récipient en millimètres, d représente le diamètre de la vis sans fin en millimètres et K représente une constante sans dimension, qui vaut au moins 190. Ainsi les temps de séjour de la matière plastique dans le récipient (1) sont portés à des valeurs optimales.

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