Method of manufacturing fibrous sheet material

Details Method of manufacturing fibrous sheet material Method of manufacturing fibrous sheet material

1978-11-01

1980-08-12

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

162201, 264121, D21D 300

Patent

active

042171695

ABSTRACT:
A distinguishing feature of the method lies in that the moist fibrous raw material is constituted by a suspension of a fibrous material with a fibre concentration of 5-30 wt. %; said suspension is heated before dispersion to 102.degree.-145.degree. under a pressure of 1.1-4.0 atm abs and fed in the form of a stream into a moulding chamber where pressure in the stream is sharply reduced to 0.8-1.0 atm abs in the course of 10.sup.-1 -10.sup.-3 seconds.

REFERENCES:
patent: 3371137 (1968-02-01), Asplund
patent: 3382140 (1968-05-01), Henderson et al.
patent: 3446699 (1969-05-01), Asplund et al.

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