Process for producing a fused false twisted continuous filament

Details Process for producing a fused false twisted continuous filament Process for producing a fused false twisted continuous filament

1977-02-04

1978-05-02

Queisser, Richard C.

Textiles: spinning, twisting, and twining

Apparatus and processes

Elements

D02G 102

Patent

active

040867510

ABSTRACT:
False-twisted yarn uniformly fused in alternate s- and z-twisted state, and having crispness characteristic of hard twist yarns is provided from partially oriented polyester filament yarn by subjecting the said polyester filament yarn to simultaneous draw false-twisting process employing lower draw ratio, lower number of false twists and higher heat setting temperature.
The partially oriented polyester filament yarn used as a feed yarn has birefringence value of 0.03 - 0.10 and break elongation of 70 - 200%. General range of processing conditions is such that draw ratio of 0.7 R.sub.o - 0.95 R.sub.o wherein R.sub.o is an apparent draw ratio to impart a drawn yarn break elongation of 30% when a feed yarn is drawn at such draw ratio (R.sub.o), false twist per meter of 15000/.sqroot.De - 28000/.sqroot.De wherein De stands for a denier of the yarn passed a false twisting mean, and heat setting temperature of 225.degree. - 255.degree. C. These three conditions are also interrelated each other for stable operation of simultaneous draw false-twisting for obtaining uniformyly fused yarn.

REFERENCES:
patent: 3936999 (1976-02-01), Okeda et al.
patent: 3956878 (1976-05-01), Schaffer et al.
patent: 3978647 (1976-09-01), Kosaka et al.

Affiliated with

Also associated with

Rating

Process for producing a fused false twisted continuous filament does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing a fused false twisted continuous filament , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing a fused false twisted continuous filament will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2152675