Process for preparing polyester filamentary material

Details Process for preparing polyester filamentary material Process for preparing polyester filamentary material

1989-11-22

1992-02-11

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Anti-stick or adhesion preventing coating

2642104, 2642108, 26421115, 26421117, 264234, 264345, B29C 4788, D01D 5098

Patent

active

050874012

ABSTRACT:
A process for preparing polyester continuous filamentary material by (a) extruding the polyester material while molten to form filaments, (b) solidifying the molten filaments by cooling them to a temperature at or below their glass transition point, (c) drawing the solidified filaments within a hot drawing zone, (d) subjecting the drawn filaments to a finishing treatment, (e) advancing the finished filaments around first and second godet rollers and, while the filaments are disposed between the first and second godet rollers, subjecting the filaments to heat treatment by advancing the filaments through a heat treatment zone without contacting the filaments with a solid hot surface, the filaments being advanced through the heat treatment zone under a given tension T, and (f) winding the filaments at a speed of at least 4,500 m/min under a given tension t. the respective tensions T and t lie within the ranges

REFERENCES:
patent: 3044250 (1962-07-01), Hebeler
patent: 4049763 (1977-09-01), Mineo et al.
patent: 4456575 (1984-06-01), Smith et al.

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