Main > TEXTILES > Fibers > Cellulose Carbamate Fiber

Product DE. Z

PATENT ASSIGNEE'S COUNTRY Germany
UPDATE 10.99
PATENT ASSIGNEE Zimmer AG
PATENT CLAIMS Process for spinning cellulose carbamate soln by
- Extruding the soln into a precipitation bath through a spinne
ret to form fibers
- Coagulating the fibers thus formed by bringing them in con
tact with the precipitation medium
- Drawing off the fibers at predetermined rate by mechanical
means after the fibers exit the precipitation bath
The IMPROVEMENT comprising
- Upon exiting from the spinneret
- Enveloping the fibers in a stream of precipitation medium
having a predetermined cross section
- Flowing in the same general direction as the fibers,
Wherein the velocity of flow of the precipitation medium where the fibers exit the spinneret is adjusted to be 0.1-0.8
times the draw-off rate of the fibers, & the velocity of flow of the precipitation medium where the fibers exit the precipita
tion bath is adjusted to be 0.96-1.1 times the draw-off rate
PATENT PHOTOCOPY Available on request

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