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Title: Method and apparatus for deregistering multi-filament tow and product thereof

A method and apparatus for deregistering drawn crimped nylon multifilament tow includes the steps of stretching the tow under constant controlled tension at a temperature below the glass transition temperature of the nylon. The apparatus includes means for sensing the tension of the tow between the feed and draw sections of a stretching device and producing a signal representative of the tension sensed and a controller for changing the speed of the draw section actuated by said signal.
Inventors:
 [1];  [2];  [3]
  1. (Newark, DE)
  2. (Seaford, DE)
  3. (Chadds Ford, PA)
Issue Date:
OSTI Identifier:
869917
Assignee:
E. I. Du Pont de Nemours and Company (Wilmington, DE) PNNL
Patent Number(s):
US 5422180
Contract Number:
AC06-76RL01830
Research Org:
BATTELLE MEMORIAL INSTITUTE
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; deregistering; multi-filament; product; drawn; crimped; nylon; multifilament; steps; stretching; constant; controlled; tension; temperature; below; glass; transition; means; sensing; feed; draw; sections; device; producing; signal; representative; sensed; controller; changing; speed; section; actuated; signal representative; temperature below; transition temperature; glass transition; /428/