Patent ID: 6217206
Filing Date: 2001-04-17
Classification: B29C

Abstract:
An extruder comprising:(a) at least one stator;(b) at least one rotor, the rotor having a side facing the stator with a conical surface, the stator having a side facing the rotor with a conical surface, the rotor having a diameter at a widest point thereof and a length, a ratio of the length of the rotor to the diameter at the widest point being at most five-fold; and(c) mounting means, comprising at least first and second bearings, for mounting the rotor in the extruder at the widest point of the rotor such that the first bearing receives forces directed in a first axial direction of the rotor and the second bearing receives forces directed in a second axial direction of the rotor that is opposite the first axial direction and such that the first and second bearings together receive forces acting in a radial direction of the rotor, each of said first and second bearings having an axis that is diagonal to each of the first and second axial directions and the radial direction.