(under the class definition) Apparatus comprising plural reshaping couples to (1) convolute plural preforms in parallel or (2) convolute a single preform a plurality of times in series.
SEE OR SEARCH THIS CLASS, SUBCLASS:
319+, for means for forming a preform combined with means to convolute that preform.
324.1+, for diverse shaping means in series.
391, for convoluting means to reshape one preform at a time.
SEE OR SEARCH CLASS
493, Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet or Web, appropriate subclasses, especially 303+, for a convoluting-type machine for making a paper tube.
