Method of producing a mineral fiber product

Details Method of producing a mineral fiber product Method of producing a mineral fiber product

1976-11-30

1981-02-17

Smith, William F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With classifying, separating or screening of pulp

162145, 162152, 162158, 209 3, D21B 100

Patent

active

042513200

ABSTRACT:
The disclosure relates to the production of a mineral fiber product for example to replace asbestos fibers in different products. In the method of production, at most 7% by weight of mineral fibers is dispersed in water which contains a wetting agent, undispersible material being then separated and the dispersion being then mechanically dewatered to a dry content of from 30 to 70% by weight and a fiber density of from 200 to 400 kg/m.sup.3. In a subsequent, separate stage, the fibers are redispersed in water substantially without the addition of wetting agent, are provided with possible additives such as cellulose fibers, are shaped, dewatered and dried.

REFERENCES:
patent: 3055498 (1962-09-01), Megumi
patent: 3300372 (1967-01-01), Bauer
patent: 3865315 (1975-02-01), Roberts et al.
Derwent Abstract of Belgian Pat. No. 838373.

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