NON-ASBESTO FLEXIBLE SHEET MATERIAL

摘要

Non-asbestos flexible sheet material suitable for use as thermal insulation in domestic gas-fired boilers is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the followng ingredients in the following proportions by dry weight: the maximun content of combustible ingredients (including cellulose fibres and starch) in said slurry being 10% by dry weight.