Method of and apparatus for producing a calibrated extrusion

Details Method of and apparatus for producing a calibrated extrusion Method of and apparatus for producing a calibrated extrusion

B - Operations, Transporting

29

D

18/719

B29D 7/00 (2006.01) B29C 47/88 (2006.01) B29C 47/90 (2006.01) B29C 47/92 (2006.01)

Patent

CA 1059717

ABSTRACT OF THE DISCLOSURE An extruder is operated continuously to produce a plastically deformable strand that is pulled through a calibrating die and a cooling bath by a withdrawal arrangement downstream of the die and the bath. A sensor detects the volume of the strand between the tool and the extruder and controls the extrusion or the withdrawal rate in accordance with such volume so as to produce an accurately calibrated extrusion. The sensor may engage the strand at the bank formed immediately upstream of the mouth of the calibrating die or may be upstream therefrom and detect the hang or droop of the strand between the die and the extruder.

231218

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