Process for producing polyester fibers

Details Process for producing polyester fibers Process for producing polyester fibers

1991-04-10

1992-12-15

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

2641761, 26433121, D01F 684

Patent

active

051715066

ABSTRACT:
Polyester fibers having high tenacity and high modulus can be produced practically and economically by melt-spinning a copolyester at a take-up speed of 3,000 meters/min. or more. The copolyester comprises at least 60 mol % of ethylene terephthalate units, has a persistence length of 15 angstroms or more and does not show a liquid crystalline nature in the molten state.

REFERENCES:
patent: 4071502 (1978-01-01), Sugiyama et al.
patent: 4118372 (1978-10-01), Schaefgen
patent: 4195051 (1980-03-01), Frankfort et al.
patent: 4663423 (1987-05-01), Yamada et al.

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