MANUFACTURE OF MAN-MADE VITREOUS FIBRE PRODUCTS

摘要

A process is provided for making filled mineral fibre products which comprises applying mineral melt to a rotating fiberising rotor and thereby throwing from the rotor as fibres and forming a substantially annular cloud of the fibres, spraying binder into the annular cloud of fibres, carrying the fibres axially from the rotor towards a collector surface and collecting the fibres on the collector surface as a web and the process includes spraying into the substantially annular cloud a slurry which has specific gravity at least 1.1, preferably at least 1.2, and which comprises a substantially stable liquid dispersion of a particulate material in an aqueous binder.