Dry forming of fibrous material

Details Dry forming of fibrous material Dry forming of fibrous material

1978-09-18

1981-04-21

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Bulk deposition of particles by differential fluid pressure

264112, 264118, 264120, D04H 120

Patent

active

042632390

ABSTRACT:
A process for producing a consolidated sheet of substantially dry fibrous material, for example wood pulp, comprising supplying fibrous material, having a moisture content of not more than 30 percent by weight on the total weight of the fibrous material, to a hopper and onto a gas-pervious conveyor while drawing gas through the conveyor (and through the fibrous material thereon), carrying the dry fibrous material on the conveyor surface from the hopper beneath means for reducing upward protrusions therefrom to form a layer of the fibrous material and applying pressure to said layer to consolidate the fibrous material to form a coherent sheet.

REFERENCES:
patent: 3050427 (1962-08-01), Slayter et al.
patent: 3054714 (1962-09-01), Johnston
S. A. Rydholm, "Pulping Processes", 1965, p. 760.
Aldred, F. C., Processing of Pulp, Provisional Specification, No. 35428/77, 24 Aug., 1977.

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