Cross-reference art collection of porous felts, per se, which are utilized to carry, press and dewater a wet paper web and which felts are defined by structure or composition.
(1) Note. The felt usually rides between a roll and the wet paper web. It is not to be confused with the foraminous wet paper forming means (e.g., wire) on which the paper is formed from paper pulp or with the impermeable belt utilized to convey and press the wet paper web or with the drier section fabrics which generally have higher permeability.
SEE OR SEARCH THIS CLASS, SUBCLASS:
358.2, for press and felt combinations having significant felt structure or having felt composition.
SEE OR SEARCH CLASS
139, Textiles: Weaving, particularly
388, for woven fabric, per se. 428, Stock Material or Miscellaneous Articles, appropriate subclasses for nonwoven fabric having structure.
