Abstract: Acording to embodiements described herein, at least one release agent may be applied onto a cellulosic mixture during production of a cellulosic composite materials. The method for applying the release agent may include supplying a cellulosic mixture comprising a cellulosic fiber and a binder, applying a first release agent onto the top surface of the cellulosic mixture with a first spray, and applying a second release agent onto the top surface of the cellulosic mixture with a second spray, The first spray mayh agitate the top surface of the cellulosic mixture by causing at least some cellulosic fiber material on the top surface of the cellulosic mixture to be displaced. The second spray may substantially coat the entire top surface of the cellulosic mixture.

Abstract: A spraying system may be used for applying a coating fluid onto a cellulosic mixture. The spraying system may include a conveyor and spraying apparatus. The conveyor may include a cellulosic mixture contacting surface and may be moveable in a conveying direction. The spraying apparatus may be operable to deliver coating fluid towards the cellulosic mixture contacting surface. The spraying apparatus may include at least one primary spray nozzle and at least one secondary spray nozzle. Each of the at least one primary spray nozzles may be oriented such that it can deliver the coating fluid in a first spray generally opposite the conveying direction. Each of the at least one secondary spray nozzles may be oriented such that it can deliver the coating fluid in a second spray generally concurrent with the conveying direction.

Abstract: Extruder head adapted for receiving and distributing extruded materials comprises a rear wall defining a discharge port; substantially parallel upper and lower walls, wherein each of said upper and lower walls has a longitudinal axis which runs parallel to said rear wall, and are interconnected by said rear wall to define an open channel therebetween; wherein at least one of said upper or lower walls defines a transverse, recessed trough aligned with said discharge port for distributing material discharged from said port; wherein said open channel is adapted to receive a substrate to which extrusion material is applied when said substrate is passed through said channel.

Abstract: An extrusion apparatus is described comprising an underside extrusion nozzle for extruding a substance onto an object from underneath the object, the nozzle comprising: a body and a manifold therein; a plurality of extrusion passages in the body extending between the body exterior surface and the manifold; and a scraper blade attached to the body adjacent to the passages and defining a reservoir between the exterior surface and the scraper blade. The extrusion apparatus may further comprise a stand for holding and biasing the nozzle in contact with an object conveyed above it.