Differentially drafted lofted continuous filament yarn and proce

Details Differentially drafted lofted continuous filament yarn and proce Differentially drafted lofted continuous filament yarn and proce

1976-07-29

1977-05-31

Queisser, Richard C.

Textiles: manufacturing

Warp preparing or handling

Machine replenishing

57157F, 57157S, D02G 116

Patent

active

040259943

ABSTRACT:
Process and product obtained by the process by which an undrawn or partially drawn continuous filament yarn is heated above glass transition temperature and is differentially drafted by co-current and countercurrent heated gaseous flows to form in the filaments at random intervals along the lengths of the individual filaments coils, loops or whorls, with more drafting occurring in those portions of the filaments having the coils, loops or whorls than the other portions, and with more drafting occurring in some loops than others, and at the same time heat setting the yarn within the heated gaseous flows.

REFERENCES:
patent: 2924868 (1960-02-01), Dyer
patent: 3303169 (1967-02-01), Pitzl
patent: 3453709 (1969-07-01), Dyer
patent: 3473315 (1969-10-01), Le Noir
patent: 3534453 (1970-10-01), Lefebure
patent: 3898719 (1975-08-01), Lloyd

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