Process for making poly(trimethylene terephthalate) yarn

Details Process for making poly(trimethylene terephthalate) yarn Process for making poly(trimethylene terephthalate) yarn

1998-07-07

2000-08-29

Stryjewski, William

Textiles: spinning, twisting, and twining

Apparatus and processes

Twist setting

57286, 57295, 57351, 57908, 264103, 264168, D01H 1326

Patent

active

061090158

ABSTRACT:
In a method of producing poly(trimethylene terephthalate) yarn from PTT chip which has been extruded through a spinneret into filaments and coated, the coated filaments are passed between an unheated feed roll and a tension roll to tension them without causing permanent stretching, and then are passed from the tension roll to a heated draw roll to draw the filaments in a single draw step to a draw ratio of 1.25 to 4.0 and to heat them to a temperature between their glass transition temperature and their crystallization temperature.

REFERENCES:
patent: 3681188 (1972-08-01), Harris
patent: 5645782 (1997-07-01), Howell et al.
patent: 5662980 (1997-09-01), Howell et al.
patent: 5939166 (1999-08-01), Cheng et al.
H. Brody, Synthetic Fibre Materials, Longman, 1994, pp. 134-140.
M. Tant et al., "Physical Aging Studies of Semicrystalline Poly(ethylene Terephthalate)" in J. of Applied Science, vol. 26, 1981, pp. 2813-2825.

Affiliated with

Also associated with

Rating

Process for making poly(trimethylene terephthalate) yarn 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 making poly(trimethylene terephthalate) yarn, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making poly(trimethylene terephthalate) yarn will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1236655