Method for the extrusion of tetrafluoroethylene polymer tubes

Details Method for the extrusion of tetrafluoroethylene polymer tubes Method for the extrusion of tetrafluoroethylene polymer tubes

1981-01-23

1982-09-21

Hall, James R.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Autogenously or by activation of dry coated particles

B01J 206

Patent

active

043506534

ABSTRACT:
Tetrafluoroethylene polymer tubes are ram extruded. Desirable quality tubes are obtained by controlling the back pressure on the mandrel as the ram forces polymer to be fabricated into the barrel of the extruder.

REFERENCES:
patent: 2456621 (1948-12-01), Cheney, Jr.
patent: 2685707 (1954-08-01), Llewellyn et al.
patent: 2847711 (1958-08-01), Hibbard
patent: 2945265 (1960-07-01), Sell, Jr. et al.
patent: 3045288 (1962-07-01), Sykara
patent: 3068513 (1962-12-01), Chaffin
patent: 4104394 (1978-08-01), Okita
patent: 4203938 (1980-05-01), Burnett et al.

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