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US 10,532,495 B2Granted
Methods for manufacturing bulked continuous filament from recycled PET
AssigneeAladdin Manufacturing Corporation
InventorThomas R. Clark
Life of this patent
Estimating the term…
Abstract
A method of manufacturing bulked continuous carpet filament that includes providing a polymer melt and separating the polymer melt from the extruder into at least eight streams. The multiple streams are exposed to a chamber pressure within a chamber that is below approximately 5 millibars. The streams are recombined into a single polymer stream and formed into bulked continuous carpet filament.
Claims16
A method of manufacturing bulked continuous carpet filament, the method comprising:
- providing a polymer melt from an extruder to a chamber;
- separating the polymer melt from the extruder into at least eight streams within the chamber, each stream at least partially exposed to the chamber encompassing the at least eight streams such that a surface area of each of the at least eight streams is exposed to a chamber pressure within the chamber;
- reducing a pressure within the chamber to reach the chamber pressure below about 5 millibars corresponding to a desired moisture level or intrinsic viscosity associated with a single polymer stream comprising the at least eight streams of the polymer melt;
- recombining the at least eight streams into the single polymer stream;
- and
- forming the single polymer stream into bulked continuous carpet filament.
3 more elements
A method for manufacturing bulked continuous carpet filament, the method comprising:
- providing an extruder;
- providing a plurality of polymer flakes to the extruder;
- melting the plurality of polymer flakes within the extruder to create a polymer melt;
- providing the polymer melt to a chamber;
- increasing a surface area of the polymer melt exposed to the chamber utilizing at least eight streams of the polymer melt;
- reducing a pressure within the chamber to reach a chamber pressure of below about 5 millibars;
- recombining the at least eight streams into a single polymer stream;
- and
- forming the single polymer stream into bulked continuous carpet filament.
6 more elements
Dependencies are inferred from the claim text.