| 摘要 |
<p>In extrusion apparatus of the type having a generally cylindrical roller (40), a stationary die head surface (24) confronting the roller (40) and defining therewith an extrudate chamber (50), and means for rotating the roller (40) to force material through the chamber (50) to an extrudate shaping orifice (52) defined by the roller (40) and a downstream portion of the die head (23), a bearing pad (27 and 28) is interposed between the roller (40) and the die head (20). The roller (40) is biased against the bearing pad (27 and 28) so that the pad (27 and 28) serves to space the roller (40) from the die head (20) to accurately control clearance between the die head (20) and roller (40) at the extrudate shaping orifice (52).</p> |
