Co-refining of aramid fibrids and floc

Details Co-refining of aramid fibrids and floc Co-refining of aramid fibrids and floc

1983-06-15

1984-09-18

Chin, Peter

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With plural or specified mechanical defibering step

162 9, 162146, 1621573, 241 21, 264140, D21B 104

Patent

active

044722419

ABSTRACT:
An aqueous slurry of 0.2 to 2.0 weight percent aramid fibrids and aramid floc in a weight ratio of 0.25 to 20, respectively, is refined in a disc refiner having grooved facing plates with surface dams, the distance between the facing plates being 0.20 to 1.0 mm.

REFERENCES:
patent: 2999788 (1961-09-01), Morgan
patent: 3240437 (1966-03-01), Horstman
patent: 3745645 (1973-07-01), Kurth et al.
patent: 3756908 (1973-09-01), Gross
patent: 4039154 (1977-08-01), Peterson
patent: 4237081 (1980-12-01), Murphy et al.

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