Planetary gear extruder for the compounding and extrusion of pla

Details Planetary gear extruder for the compounding and extrusion of pla Planetary gear extruder for the compounding and extrusion of pla

1989-04-18

1989-12-26

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

366288, 366301, 425204, B01F 708, B28C 116

Patent

active

048894303

ABSTRACT:
A planetary gear extruder for the compounding and extrusion of thermoplastic materials, in which an annular groove is formed in the metallic stop ring to receive a ceramic body which is engageable by the forward ends of the planetary spindles in order to reduce friction. A ceramic body may additionally also be arranged in a recess in the end face of each of the planetary spindles, aligned with and adapted to engage the ceramic body mounted in the stop ring. As a result, the coefficients of friction between the stop ring and the end faces of the spindles are reduced considerably, consequently reducing the wear on the planetary spindles themselves and the central spindle.

REFERENCES:
patent: 3310837 (1967-03-01), Wittrock
patent: 3640669 (1972-02-01), Hanslik
patent: 3746319 (1973-07-01), Black
patent: 3929322 (1975-12-01), Hanslik

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