Level control of dry-jet wet spinning process

Details Level control of dry-jet wet spinning process Level control of dry-jet wet spinning process

1974-11-26

1976-12-07

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling fluid pressure in direct contact with molding...

264181, 264184, 425 71, D01D 514

Patent

active

039963217

ABSTRACT:
In a process for forming fibers by extruding a spinning dope successively through a layer of inert gas and a tube immersed in a coagulating bath, the tension profile of the yarn passing through the tube is regulated by regulating the pressure of the layer inert gas. In this pressurized quench system, the coagulating liquid is maintained at a predetermined level, despite transient changes in liquid input, by passing both pressurized gas and coagulating liquid through a pipe having an opening at the level to be maintained.

REFERENCES:
patent: 3412191 (1968-11-01), Kitajima et al.
patent: 3767756 (1973-10-01), Blades
patent: 3842151 (1974-10-01), Stoy et al.

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