(under subclass 308) Apparatus in which the treating means is positioned at the point where the stock stream initially contacts the foraminous forming surface.
(1) Note. In this subclass may be found, for example, rectifier rolls positioned adjacent the molding surface. The position of the roll must be such that the fibrous material on the mold is modified in some way by the direct action thereon of the roll. In subclass 342 may be found rectifier rolls immersed in the stock in the head box and treating the fibers while in suspension and before felting on the mold.
SEE OR SEARCH THIS CLASS, SUBCLASS:
342, for head boxes having rectifier roll structures therein but not adjacent the molding surface and see (1) Note above.
