Manufacture of fibrous artefacts

Details Manufacture of fibrous artefacts Manufacture of fibrous artefacts

D - Textiles, Paper

21

F

92/11.1

D21F 11/00 (2006.01) C04B 28/02 (2006.01)

Patent

CA 1049822

ABSTRACT OF THE DISCLOSURE The invention provides a process for producing a fibre-reinforced board product from an aqueous slurry by forming a layer on the surface of a rotary sieve, from which the layer is subsequently removed, the process including the step of forming the aqueous slurry from water, an inorganic binder and from ? to 20% by weight of vitreous fibres (referred to the finished product) together with a minor proportion of auxiliary non-asbestos fibres preferably cellulosic, having a Canadian Standard Freeness in the range 20 - 300°. The process may also include a preliminary step of opening the auxiliary non-abestos fibres to a Canadian Standard Freeness of 20- 300° before forming the slurry.

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