(under subclass 100) Processes including a step of winding or wrapping a wet web upon itself, or upon a core to produce a multiply tubular article.
(1) Note. This group of subclasses takes processes of
forming tubes by winding followed by cutting the tube axially and flattening it out into a sheet. Products of processes of this and indented subclasses are classified on the basis of the character of the product.
(2) Note. Winding can take place, for example, by (1) passing the web at least once about the longitudinal axis of the article being formed, without displacement of the web axially of such article, resulting in the formation of a multilayered article, with each turn in close proximity to the immediately preceding and immediately succeeding turns, or (2) by advancing the web axially of the product being made, while revolving the web about such axis, resulting in the formation of a single ply tube.
SEE OR SEARCH THIS CLASS, SUBCLASS:
123+, for multilayer webs or sheets which may be produced by winding, followed by cutting the tube axially, and flattening it out into a sheet.
283+, for paper making apparatus including means for winding the paper product. SEE OR SEARCH CLASS
138, Pipes and Tubular Conduits,
100-, 178, especially subclasses 129+, 144, 150, and 154 for spirally wound layers or pipes.
