Latex bound non-asbestos paper.

摘要

Non-asbestos paper alternatives to latex-bound asbestos papers comprise vitreous fibres derived from wool-form material, organic web-forming fibres, unfired ball clay and water-insoluble non-fibrous particulate inorganic filler, the whole being bound together by a cured nitrile rubber; said paper being made by dewatering as a layer on a water-permeable conveyor an aqueous slurry whose solids content comprises by weight vitreous wool-form material 20-40% organic web-forming fibres 5-15%, ball clay 5-20% nitrile rubber 10-20%, and inorganic non-fibrous filler 5-50%, and compressing and drying the layer of dewatered slurry.