Twisted strand structures made from filamentary material which is porous or has cellular voids therein or from material which has been made filamentous usually by subjecting synthetic film, tape, or ribbon material to a treatment to split or break up the film, tape, or ribbon into a filamentous form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
31+, for making twisted strands from web material.
235, 259 and 260, for twisted strands made from web material.
SEE OR SEARCH CLASS
264, Plastic and Nonmetallic Article Shaping or Treating: Processes, Digests 8 and 47 for splitting or fibrillating synthetic material.
428, Stock Material or Miscellaneous Articles,
304.4+, for webs or sheets made from foamed material.
