Polyethylene filament and a process for producing the same

Details Polyethylene filament and a process for producing the same Polyethylene filament and a process for producing the same

2007-07-24

2007-07-24

Edwards, N. (Department: 1774)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

C428S394000

Reexamination Certificate

active

10510565

ABSTRACT:
The invention relates to a filament excellent in incision resistance comprising as a primary component a polyethylene filament having a weight-average molecular weight of 300,000 or less and a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.0 or less as determined in the state of a filament as well as a modulus of 500 cN/dtex or more, and to a fabric excellent in incision resistance, a fibrous material for reinforcing cement mortar or concrete, and a rope, each of which comprises the filament. The filament can be produced by drawing a non-drawn polyolefin filament which comprises a polyethylene having a weight-average molecular weight of 60,000-600,000, a ratio of a weight-average molecular weight to a number-average molecular weight (Mw/Mn) of 4.5 or less, and a rate of birefringence (Δn) of 0.008 or more, at a temperature not higher than the α-relaxation temperature of said non-drawn filament.

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