Patent ID: 7004616
Filing Date: 2006-02-28
Classification: B29B,B29C,B29K

Abstract:
1. A kneading apparatus comprising: a barrel having a cylindrical chamber; a screw assembly rotating in the chamber for extruding a material to be kneaded in the axial direction, said screw assembly comprising a screw section having helical blades and a kneading blade section for allowing the material to flow into the clearance between the inner wall of the chamber and a kneading blade of said kneading blade section, and for applying shearing forces to the material to be kneaded; a metering feeder for feeding the material at a substantially constant volumetric rate or at a substantially constant gravimetric rate from a feed port provided on the barrel into the chamber; an injecting device provided on the barrel for injecting a heat-removing liquid medium into a first portion of the chamber; a discharging device including a reduced pressure producing device for separating the heat-removing medium from the material at a second portion of the chamber downstream from said first portion; means for controlling the amount of the heat-removing medium to be injected into the chamber; and a thermometer for measuring the temperature of the material in the chamber, wherein said means for controlling controls the amount of heat removing medium based on the temperature measured by the thermometer.