.~.~ Flexible endless band type mold (e.g., Fourdrinier) {5}
353
.~.~.~ Mask, deckle, or apron
DEFINITION
Classification: 162/353
(under subclass 348) Apparatus provided with means to restrict or alter the area of contact of the pulp slurry with the forming surface.
(1) Note. The apparatus of this subclass control the application of slurry to the mold surface and are associated with the pulp carrying side of the mold as distinguished from devices under the mold and controlling the flow of white water or filtering medium after separation from the retained pulp. For the latter type of device see subclass 351 above.
(2) Note. The devices of this subclass include, for example, the following: deckled straps, which are endless bands traveling with the mold and serving to form the side dams for the molding surface; apron devices which usually comprise a flexible cloth attached to the head box or stock supply means and extending over the endless belt to help carry the stock onto the endless belt.
SEE OR SEARCH THIS CLASS, SUBCLASS:
334, for cylinder molds having associated therewith mask deckle or apron structure.
351, for flexible endless band mold devices provided with means placed below the mold surface for collecting or controlling the flow of white water through the mold and see (1) Note above.
