Drawn gel-spun polyethylene yarns and process for drawing

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber

Reexamination Certificate

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C428S394000

Reexamination Certificate

active

06969553

ABSTRACT:
Gel-spun multi-filament polyethylene yarns possessing a high degree of molecular and crystalline order, and to the drawing methods by which they are produced. The drawn yarns are useful in impact absorption and ballistic resistance for body armor, helmets, breast plates, helicopter seats, spall shields, and other applications; composite sports equipment such as kayaks, canoes, bicycles and boats; and in fishing line, sails, ropes, sutures and fabrics.

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P. Smith et al.,Polymer Bulletin, 1, 733 (1979).
R.G.Snyder et al.,J. Poly.Sci, Poly Phys Ed, 16, 1593-1609 (1978).
V.A.Bershtein et al., “Differential Scanning Calorimetry of Polymers: Physics, Chemistry, Analysis, Technology”, Ellis Horwod,, New York, p. 141-143, 1994.

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