(under subclass 1) Subject matter wherein the strand, while it is in a twisted state, is subjected to a treatment, the purpose of which is to impart a relatively permanent torque to the strand so that the strand will assume and maintain a creped, textured, or crimped configuration.
SEE OR SEARCH THIS CLASS, SUBCLASS:
205, 208, 226, 227+, 239, 246+, and 254, for twisted strands having a crimp therein.
308, for twisting operations wherein the temperature, humidity, ventilation, etc., of the atmosphere or environment around the twisting operation is controlled.
309, for twisting operations wherein the strand is subjected to a post or after treatment to develop or enhance the final product.
351, for twisting operations combined with other types of crimping operations.
SEE OR SEARCH CLASS 28, Textiles: Manufacturing,
247+, for other types of crimping or texturing operations.
264, Plastic and Nonmetallic Article Shaping or Treating: Processes,
168, for extrusion of filaments combined with crimping.
