Process for melt mixing and spinning synthetic polymer

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...

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26417217, 26417218, D01D 406, D01F 804

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active

056519281

ABSTRACT:
Synthetic polymers are melt-mixed and spun from a mixture of respective first and second polymer melt flows. Specifically, the mixture of first and second polymer melt flows are mixed at a fluidic mixing device having a mixing intersection which receives the first and second polymer melt flows and discharges the mixture thereof respectively into at least one or another of multiple discharge ports fluid-connected with a respective spinning nozzle. The mixed flow of first and second polymer melt flows is controlled by diverting the first polymer melt so that it (i) entirely flows along a first flow path to responsively merge with the second polymer melt flow at the mixing intersection of the mixing device and thereby cause the mixed polymer flow to be discharged through the one discharge port, or (ii) entirely flow along a second flow path to responsively merge with the second polymer melt at the mixing intersection of the mixing device and thereby cause the mixed polymer flow to be discharged through the other discharge port. The mixed polymer flow thereby diverted is thus spun by one or another of the spinning nozzles, respectively.

REFERENCES:
patent: 3049297 (1962-08-01), O'Shaughnessy
patent: 3200440 (1965-08-01), Bryan et al.
patent: 3209402 (1965-10-01), Riley et al.
patent: 3371139 (1968-02-01), Frazer
patent: 3496261 (1970-02-01), Parr
patent: 4017249 (1977-04-01), Lenk
patent: 4019844 (1977-04-01), Ogasawara et al.
patent: 5244614 (1993-09-01), Hagen

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