Twisted strand structures in which the individual fibers or filaments from which the strand is made are formed of at least two different compositions such that, in a cross section of an individual fiber or filament, the different compositions are side by side with a connecting web therebetween or one composition is substantially enclosed in the other (sheath-core type).
SEE OR SEARCH CLASS
264, Plastic and Nonmetallic Article Shaping or Treating: Processes, Digest 26 for extruding composite fibers made of two or more materials.
428, Stock Material or Miscellaneous Articles,
370, 373, and 374 for multicomponent fibers or filaments.
