Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – By vibration or agitation
Patent
1978-04-03
1980-12-02
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
By vibration or agitation
162157R, 264140, C08G 5121, B24D 300
Patent
active
042370817
ABSTRACT:
Apparatus useful in the manufacture of thermoplastic Olefin polymer fibrils are prepared by a process carried out in a disc mill. A hot olefin polymer solution is fed into the working cavity defined by the discs. In passing through the working cavity, the hot polymer solution is broken up into a plurality of uniaxially-oriented liquid streams which follow tortuous liquid paths through the working cavity whereby each of the streams is attenuated to orient the solute polymer molecules in said streams. A coolant liquid is fed into the working cavity and cools the attenuated polymer streams to a temperature sufficiently low so that substantially all of the solute polymer is precipitated in the form of uniaxially-oriented polymer fibrils. The product recovered from the modified disc mill consists of a mixture of uniaxially-oriented polymer fibrils, polymer solvent, and coolant liquid. The fibrils are recovered and refined in subsequent downstream operations.
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Boehme, deceased Robert E.
Boehme, legal representative by Helen J.
Murphy Clarence R.
Phelp, executor by Joseph P.
Gulf Oil Corporation
Kelly Richard L.
Woo Jay H.
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