Cutting device for purging an extruder
AssigneeSolvay Polyolefins Europe-Belgium (Societe Anonyme)
InventorFrederic Cousin
Life of this patent
Estimating the term…
Abstract
A device for purging a high-output polymer extruder includes a purge valve for discharging a molten polymer from the extruder. A cutting device is arranged at the output of this purge valve so as to be able to cut a continuous stream of polymer at the output of the purge valve into blocks. A conveying device, preferably hydraulic, is arranged at the output of the cutting device, so as to transport the blocks in a flow of liquid and convey them away from the discharge zone of the purge valve. The hydraulic conveying device preferably includes a chute equipped with a liquid-injection device, and a channel equipped with a device for creating a strong flow of liquid in the channel.
Claims11
Device for purging a polymer extruder, comprising a purge valve located upstream of the die for discharging a molten polymer from the extruder in the form of a continuous stream;
- comprising:
- a cutting device arranged at the exit of the purge valve, the cutting device being capable of cutting the continuous stream of polymer leaving the purge valve into blocks, wherein the cutting device is a knife;
- and
- a conveying device arranged at the exit of the cutting device, so as to transport the blocks immediately a certain distance away from the extruder.
Dependencies are inferred from the claim text.