C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
9/61, 49/8.9
C03B 37/10 (2006.01) D04H 1/00 (2006.01)
Patent
CA 1099926
Abstract of the Disclosure The disclosure relates to the production of a mineral fiber product for example to replace asbestos fibers in different products such as web or sheet-like products. The produced mineral fibers are free from particulate material (pearls), are uniformly dispersible and have superior sheet- forming properties. The mineral fibers can be used as additives with other dispersible fibers such as cellulose, as reinforcing material and in plasterboard for the produc- tion of molded articles such as diffusers for ventilation installations. 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/m3. In a subsequent, separate stage, the fibers are redispersed in water sub- stantially without the addition of wetting agent, are provided with possible additives such as cellulose fibers, are shaped, dewatered and dried.
266969
Cederqvist Nils G.
Dberg Ulf L.
Rockwool Aktiebolaget
Sim & Mcburney
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