Extrusion surge controller and method

Details Extrusion surge controller and method Extrusion surge controller and method

B - Operations, Transporting

29

C

B29C 47/72 (2006.01) B29C 47/08 (2006.01) B29C 47/46 (2006.01) B29C 47/92 (2006.01)

Patent

CA 2167782

An apparatus is provided for extruding a polymer which is subject to periodic surges. The apparatus includes a barrel with a upstream portion for receiving a polymer, a downstream portion and a discharge port near the downstream portion. The apparatus also includes a shaft mounted for rotational movement about a longitudinal axis within the barrel as well as drive means connected to rotate the shaft. The apparatus has a surge suppressor for urging polymer upstream toward the discharge port while permitting a portion of polymer to flow downstream into the surge suppressor. A sensor is positioned within the apparatus to detect surges in the polymer and a controller is connected to the sensor and to the drive means for adjusting shaft rotation in response to polymer surges.

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