Velocity induced drainage method and unit

Details Velocity induced drainage method and unit Velocity induced drainage method and unit

1998-10-08

1999-09-14

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162374, D21F 154

Patent

active

059518235

ABSTRACT:
A drainage device and method which provides for drainage from paper or pulp stock on a fabric in a sheet or mat making machine which includes a primary blade and trail blade with a gap therebetween for drainage wherein the size of the gap controls drainage and the primary blade is so configured so as to force a portion of the drained liquid through the fabric to create paper stock activity and disbursement while minimizing turbulence and maintaining laminar flow in the machine direction along with providing reinforcement of CD shear.

REFERENCES:
patent: 4559105 (1985-12-01), Sennett et al.
patent: 4687549 (1987-08-01), Kallmes
patent: 4789433 (1988-12-01), Fuchs
patent: 4838996 (1989-06-01), Kallmes

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