Process for high modulus polymeric materials

Details Process for high modulus polymeric materials Process for high modulus polymeric materials

1978-09-19

1981-03-03

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2642104, 2642108, 2642905, 528502, D01D 512

Patent

active

042540720

ABSTRACT:
A process for the production of a high modulus filament of polyethylene which comprises heating high density polyethylene to a temperature above its melting point, extruding the polymer to form a filament, subjecting the filament immediately after extrusion to a tension under such conditions that the filament is shaped without substantial orientation of its molecules, cooling the filament at a rate of cooling in excess of 15.degree. C. per minute, and drawing the filament to a high draw ratio.

REFERENCES:
patent: 3013003 (1961-12-01), Mavagliano et al.
patent: 3413397 (1968-11-01), Bierbaum et al.
patent: 3651196 (1972-03-01), Stavkweather
"Relation Between Structural Para. & Tenacits of PP Monofils", by Sheehan et al., Tex. Res. J., pp. 626-636, Jul., 1965.
J. of Polymer. Sci. Pt. A-2, vol. 6, 1273-1282, (1968), by Peterlin et al.
J. of Polymer. Sci. Pt. A-2, vol. 9, 67-83, (1971), by Meinel et al.
J. of Material Sci., 5, (1970), pp. 411-417, Andrews et al., Polymer, 1974, vol. 15, (Apr.), pp. 233-238, Capaccio et al.

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