Foam generator for papermaking machine

Details Foam generator for papermaking machine Foam generator for papermaking machine

1980-05-05

1981-11-10

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

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

162380, 366101, 366336, D21F 106

Patent

active

042996554

ABSTRACT:
A mechanism to be used in the generation and maintenance of a surfactant foam having fibers distributed therethrough with the foam to be used in the formation of a fibrous web by being deposited on a porous forming surface and particularly a unit for dispersing and mixing fluids provided with a flow path including an upstream conduit and a downstream conduit and a housing therebetween defining a dispersing and mixing chamber with a plug therein providing venturi chambers, and in one form having a washboard corrugated path on the upstream side wherein the foam is provided with controlled surfactant and air and in the zones of reduced pressure caused by the venturi shape expansion, the fibers are distributed and the air is distributed throughout the surfactant in a uniform manner.

REFERENCES:
patent: 2481959 (1949-09-01), Wahlin
patent: 3716449 (1973-02-01), Gatward et al.
patent: 3802960 (1974-04-01), Spengos et al.
patent: 3871952 (1975-03-01), Robertson
patent: 3937273 (1976-02-01), Raduan et al.
patent: 4021296 (1977-05-01), Reiner

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