B - Operations – Transporting – 29 – F
Patent
B - Operations, Transporting
29
F
259/52, 18/733
B29F 3/02 (1980.01)
Patent
CA 1093265
ABSTRACT Apparatus for the mixing and extruding of thermo- plastic and thermo-setting materials which includes relatively rotatable coaxial rotor and barrel members having helical grooves in the mixing stage which includes rotor to barrel and barrel members, in the rotor to barrel zone, being sized, with the ex- trusion capacity of the helical groove in the rotor member de- creasing and with the helical groove in the barrel member provid- ing the extrusion capacity for the material whereby material is forced from the groove in the rotor member into the groove of the barrel member at an approximate uniform rate. Material not trans- ferred and remaining in the groove of the rotor member is con- veyed forwardly. The apparatus also includes material or stock reorienting means in the barrel member, in the barrel to rotor zone, which interrupts the material flow along the barrel groove and is effective to turn the material presented as near to right angles as possible away from the groove and to direct the re- oriented material towards the groove in the rotor member, where the reoriented material is mixed with an axially advancing material in the rotor member. The apparatus may further be pro- vided with means for longitudinally displacing one of the barrel or rotor members relative to the other to vary the extrusion or through flow capacity of the members. The material reorienting means and the means providing for longitudinal displacement be- tween the barrel and rotor members may be combined in one apparatus.
279898
Fetherstonhaugh & Co.
Geyer Paul
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