Apparatus for forming a web of material

Details Apparatus for forming a web of material Apparatus for forming a web of material

1979-10-12

1981-05-26

Czaja, Donald E.

Plastic article or earthenware shaping or treating: apparatus

Air felting type shaping means

Means forming running length product

264121, B28B 500

Patent

active

042695783

ABSTRACT:
A web is formed from particulate material, for example, wood fibers, by depositing the fibers on a conveyor surface in a distribution chamber. The particulate material is introduced into the distribution chamber at its top by a carrier air stream which is caused to oscillate across the surface by impulses from separate control blow boxes on the opposite sides of the stream. The particulate material is thoroughly dispersed in the air stream by passage through a transition zone where the carrier air stream is deflected into a zigzag path and its flow velocity is reduced. The effect of static electricity on the particles in the carrier stream is reduced by lining the transition zone with nonconductive material and providing ionizing devices in the blow boxes for the air flow passing through the control boxes, or in the chamber adjacent the boxes.

REFERENCES:
patent: 3408697 (1968-11-01), Craig
patent: 3777231 (1973-12-01), Guschin

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