Machine for forming lignocellulosic fiber mats

Abstract From the Canadian patent

Resin treated lignocellulosic fibers are conveyed by a stream of air downwardly in a separator containing one or more doffing rolls, which rotate adjacent a perforated so roll assembly that is connected to a vacuum which draws dust and foreign particles out of the fibers as they fall through the separator to a hopper located in the rear of the feeder housing. From here the fibers are fed by endless belts to the top of the expansion chamber formed in the rear of a housing containing one above the other a pair of endless screen condensers. The fibers cascade downwardly in the expansion chamber to a generally wedge-shaped air bridge formed at the inlet end of the space between the confronting …