Method for manufacture of a non-woven fibrous web

Details Method for manufacture of a non-woven fibrous web Method for manufacture of a non-woven fibrous web

1984-01-26

1985-09-24

Chin, Peter

Paper making and fiber liberation

Processes and products

Pore forming in situ

162190, 162264, 162289, 162301, D21D 300

Patent

active

045431566

ABSTRACT:
Apparatus and method for the manufacture of a non-woven fibrous web such as paper from a dispersion of fibers in a foamed liquid in which fiber furnished in a foamed liquid comprising a solution of surfactant in water is discharged from a headbox into the nip of a twin forming wire prior to its passage over a forming roll. The water-surfactant solution is drained from the web and recycled as a foamed liquid containing about 65% air in the form of bubbles of from about 20 to about 200 microns in diameter. The foamed liquid is directed into a mix tank wherein a slurry containing fiber at 20% to 55% solids is added and mixed. The mixture is pumped to the headbox and into the nip of the forming wires.

REFERENCES:
patent: 2139874 (1938-12-01), Berry
patent: 3837999 (1974-09-01), Chung
patent: 3871952 (1975-03-01), Robertson
patent: 4049491 (1977-09-01), Brandon et al.
patent: 4443297 (1984-04-01), Cheshire et al.

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