D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
28/39, 18/626
D01D 5/22 (2006.01) D01F 6/60 (2006.01)
Patent
CA 1150018
ABSTRACT OF THE DISCLOSURE A process is provided for preparing self- crimpable monocomponent fibers by the sequential steps of melt-spinning a polymer of polyhexamethylene adipamide or polycaproamide into filaments, quenching the filaments by a gentle cross-flow of air to an average surface tempera- ture of about 40 to 130°C, applying an effective amount of water to the filaments while they are in said temperature range, and then drawing the filaments at a draw ratio of at least 1.3:1 to obtain a tenacity of at least 1.3 gdp, a break elongation of less than 120% and a latent, substan- tially helical, frequently reversing crimp of at least 6 filament crimp index. The novel products of the inven- tion, which include fibers and yarns, in self-crimpable or crimped condition, are particularly suited for use in carpets.
356204
Fernstrom George A.
Hebeler Harold H.
Lin Perry H.
Moneymaker Robert R.
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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