Method for treating synthetic pulp particles, and pulp particles

Details Method for treating synthetic pulp particles, and pulp particles Method for treating synthetic pulp particles, and pulp particles

1987-01-28

1989-12-05

Chin, Peter

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With chemical or physical modification of liberated fiber

1621573, D21D 500

Patent

active

048850578

ABSTRACT:
A method for treating synthetic pulp particles, which includes treating a slurry of synthetic pulp particles having a Schopper-Riegler freeness of more than 30.degree.SR by a concentration provided with a rotary filter bed to lower the freeness not more than 30.degree.SR, water-washing the synthetic pulp particles in the state where the freeness is not more than 30.degree.SR, and dispersing the synthetic pulp particles in water to restore the freeness to more than 30.degree.SR.

REFERENCES:
patent: 2999788 (1961-09-01), Morgan
patent: 4013751 (1977-03-01), Davis et al.
patent: 4049492 (1977-09-01), Lare
patent: 4519873 (1985-05-01), Amano et al.
patent: 4724046 (1988-02-01), Yamamoto et al.
European Search Report Appln. No. EP 87 10 0777, with Documents of Interest Attached (4 patents).

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