Process for polyester yarns

Details Process for polyester yarns Process for polyester yarns

1983-08-03

1985-03-19

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

264176F, 264177F, 264237, B29F 308

Patent

active

045058679

ABSTRACT:
Improvement in a melt-spinning process, so as to prepare a terephthalate polyester yarn containing two types of filaments, one having in cross section not more than one axis of planar symmetry, and being weaker and having a lower elongation at break than the second type of filaments which have a plurality of axes of planar symmetry. The improvement involves spinning the second type through capillaries that are recessed, in relation to those for the first type, and directing quenching air to strike first the filaments of the first type.

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patent: 4419313 (1983-12-01), Bromley et al.

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