Mixing apparatus having a cooled connector

Details Mixing apparatus having a cooled connector Mixing apparatus having a cooled connector

2005-09-20

2005-09-20

Sorkin, David (Department: 1723)

Agitating

Rubber or heavy plastic working

With specified feed means

C366S144000, C425S205000

Reexamination Certificate

active

06945687

ABSTRACT:
The present invention relates to a mixing apparatus at least composed of a screw-based machine S1and a screw-based machine S2, where S1has heating equipment, at least in the plasticizing and homogenizing zone, and where the outlet from S2has been connected to the screw-containing barrel of S1, within the plasticizing or homogenizing zone of S1, a substantive feature of which is that the connection between S1and S2is brought about by a connector which has cooling equipment effective as far as the inner wall of the screw-containing barrel of S1, and to a process for preparing thermoplastically processable molding compositions, in particular additive masterbatches, from at least one thermoplastic component C1and at least one component C2, where the melting point or decomposition temperature TMC2of C2is lower, by at least about 50° C., than the temperature THC1, which is the lower limit of the thermoforming range of C1, and where most of C2is melted only after contact with C1.

REFERENCES:
patent: 3940220 (1976-02-01), D'Arcangeli
patent: 4054271 (1977-10-01), Lanzillo
patent: 4124307 (1978-11-01), Anisic
patent: 6313212 (2001-11-01), Caretta et al.
Saechtling;Kunststoff-Taschenbuch, Hanser-Verlag, Muenchen, Wien, Ausgabe 26,1995,p. 191-246.
Patent Abst of Japan, 63207627-XP-002189169, Dec. 1988.
Patent Abst. of Japan 61095923, Sep. 1986.

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