Components that can exhibit low smoke, toxic fume and burning characteristics, and their manufacture

Abstract

A component such as a basic building panel comprises a first layer of phenolic resin impregnated glass fibre, a second layer of the same material and a block of foamed phenolic resin therebetween. The panel was formed in a mould shaped to form a flange around the panel, the flange being formed by adherence of the edges of the first and second layers to each other. The panel is made by placing a layer of settable phenolic resin impregnated glass fibre mat in the mould, applying a foamable mixture of phenolic resin to said first layer and covering the foamable resin with a second layer of settable phenolic resin impregnated glass fibre mat before closing the mould. Foaming of the phenolic resin starts very quickly and when more or less completed, the mould is passed into an oven to set the phenolic resin in the outer layers.

Dependencies are inferred from the claim text.