Patent application number | Description | Published |
20090202669 | DEVOLATILIZATION SIMULATION APPARATUS FOR SCREW EXTRUDERS AND DEVOLATILIZATION SIMULATION PROGRAM FOR SCREW EXTRUDERS - A devolatilization simulation apparatus for screw extruders and a devolatilization simulation program for screw extruders can actually simulate the devolatilization process in a screw extruder. An extruder simulation system for simulating the conditions of devolatilization of an extruder by computationally determining the resin temperature, the pressure, the residence time, the filling ratio, the torque, the power, the solid-phase occupancy and the concentration of the volatile components in terms of distribution in the axial direction of the extruder from the configuration and the operating conditions of the extruder and the physical properties of the resin in the extruder comprising a means for arithmetically simulating the process where the concentration of the volatile components contained in the resin gradually falls as they are devolatilized by vent cylinders. | 08-13-2009 |
20090213681 | Counter-rotating twin screw extruder - A screw extruder having a body forming a chamber of two barrels housing two counter-rotating axis-parallel rotors, a supply port for the material to be mixed in the chamber at one end of the body, a discharge port for discharging the mixed material at the other end of the body, a conveying section with screws for feeding the material from the supply port downstream to a mixing section which comprises at least two mixing zones, each mixing zone having at least one forward-conveying wing and at least one backward-conveying wing downstream of the forward-conveying wing on each rotor characterized in that a throttle valve is provided in the chamber downstream of the mixing section, and downstream of the throttle valve a second conveying section with screws and a second mixing section are provided. | 08-27-2009 |
20100023306 | DEVOLATILIZATION PERFORMANCE PREDICTION APPARATUS AND DEVOLATILIZATION PERFORMANCE PREDICTION METHOD - A devolatilization performance prediction apparatus for a solution devolatilization process using a twin-screw extruder including a flow state computation means | 01-28-2010 |
20100296360 | MELTING KNEADING DEVOLATILIZING EXTRUDER - There is provided a melting kneading devolatilizing extruder in which the surface renewability of a molten raw material is improved. | 11-25-2010 |
20110170369 | COUNTER-ROTATING TWIN SCREW EXTRUDER - A screw extruder having a body forming a chamber of two barrels housing two counter-rotating axis-parallel rotors, a supply port for the material to be mixed in the chamber at one end of the body, a discharge port for discharging the mixed material at the other end of the body, a conveying section with screws for feeding the material from the supply port downstream to a mixing section which comprises at least two mixing zones, each mixing zone having at least one forward-conveying wing and at least one backward-conveying wing downstream of the forward-conveying wing on each rotor characterized in that a throttle valve is provided in the chamber downstream of the mixing section, and downstream of the throttle valve a second conveying section with screws and a second mixing section are provided. | 07-14-2011 |
20120081989 | APPARATUS AND METHOD FOR PLASTIC EXTRUSION - An object of the invention is to improve capacity of process and not require a vent portion by an upper polygonal groove and a transition portion provided to a transport cylinder. | 04-05-2012 |