Manufacture of calcium hydrosilicate bound fiberboard

Details Manufacture of calcium hydrosilicate bound fiberboard Manufacture of calcium hydrosilicate bound fiberboard

D - Textiles, Paper

21

J

D21J 1/16 (2006.01) C07D 487/04 (2006.01) C07K 9/00 (2006.01) D21J 1/06 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2060746

Calcium hydrosilicate bound fiberboard, in particular double-deck board, is manufac- tured in a process wherein a fiber-binder-filler mixture having a water content of 40 to 45 % by weight and a solids content of 55 to 60 % by weight is prepared by digesting cellulose fibers in an amount of from 2 to 12 % by weight of the solids content with water and mixing them with the binder comprising cement and/or lime hydrate and substances containing reactive calcium silicates and also the fillers to form a thick pasty mixture, whereupon the thick pasty mixture is introduced in a predetermined amount into the frame of a bottom mold of a single-shot press which further includes a top mold, essentially leveled out, formed by closing top and bottom mold, and, via dewatering fabrics and channels in the top and bottom molds, dewatered, compacted and vented, whereupon the raw board thus formed is demolded and autoclaved.

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