B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/733
B29C 47/64 (2006.01) B29C 47/36 (2006.01) B29C 47/38 (2006.01) B29C 47/92 (2006.01)
Patent
CA 1213115
ABSTRACT OF DISCLOSURE An extruder, including a rotor and a barrel, having mixing or working zones therein in which the material being mixed or worked is transferred layer by layer from upstream grooves in the rotor to input grooves in the barrel, and from output grooves in the barrel, which grooves are interleaved with the input grooves, layer by layer back to downstream grooves in the rotor. The input and output grooves of the barrel are intercommunicated by means of corresponding channels each of which has a selectively radially movable throttling member positioned therein for varying the cross- sectional opening of the channel in which it is positioned and, thus, the amount of shearing action and work performed on the material passing through such channel.
442843
Gowling Lafleur Henderson Llp
Uniroyal Inc.
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