Apparatus for treating thermoplastic resin
AssigneeVeb Kombinat Polygraph "Werner Lamberz" Leipzig
InventorShoichi Tanaka
Life of this patent
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Abstract
Apparatus for treating a thermoplastic resin is made up of a feed barrel supplied with the thermoplastic resin, a slit barrel for discharging a liquid component of the resin, a press-in barrel into which a polymer is admitted under pressure, and a vent barrel having a vent opening for discharging vaporized substance generated by the thermoplastic resin and the polymer. These barrels are serially interconnected to from a cylinder which contains a screw for kneading a mixture of the resin and the polymer. The kneaded mixture is extruded as a strand.
Claims4
Apparatus for treating a thermoplastic resin comprising:
- means for preparing a diene type graft polymer slurry;
- means for evaporating off vaporizing component from an acrylonitrile-styrene copolymer;
- a cylinder constituted by a feed barrel, a standard barrel having longitudinal slits for removing vaporized component, a press-in barrel and a plurality of vent barrels, each provided with a vent opening, and a plurality of heating cylinders respectively interposed between said vent barrels;
- said barrels being connected together in the order mentioned to form said cylinder;
- means for feeding said graft polymer slurry into said feed barrel;
- means for feeding under pressure said AS polymer into said press-in barrel;
- a double screw contained in said cylinder for kneading and transferring a mixture of said graft polymers slurry and said AS polymer;
- and
- an extruder connected to an end of said cylinder opposite to said feed barrel for extruding a kneaded mixture;
- said screw being provided with forward screw in said feed barrel in reverse screws respectively installed in said press-in barrel and said heating barrels for applying back pressures to flows of said graft polymer slurry and said mixture, and a kneading screw installed in said feed-in barrel downstream of said reverse screw in said feed-in barrel.
Dependencies are inferred from the claim text.