Importance

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Abstract

A method of preparing a starting material for the subsequent manufacture of a finished product such as a board, from a feedstock selected from the group consisting of a lignocellulosic material, exfoliated vermiculite, expanded perlite or a mixture of two or three thereof, includes the steps of providing the feedstock in the form of substantially dry finely divided lignocellulosic fibres or substantially dry finely divided exfoliated vermiculite or expanded perlite particles or a mixture thereof; mixing the feedstock with a suitable amount of a thermosetting resin in finely divided dry powder form and a suitable amount of the hydraulic binder in finely divided dry powder form; and optionally subjecting this starting material to suitable conditions of temperature and pressure to cause the thermosetting resin to set to form a cohesive product thereafter, there may be provided to the cohesive product, water in an amount sufficient for the hydration of the hydraulic binder so that the hydraulic binder sets to form the finished product.

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First Claim