Importance

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Abstract

A method of preparing a cohesive product having a density of from 250 kg/m.sup.3 to 900 kg/m.sup.3 from a low density feedstock, such as a milled thermoset resin foam, includes the steps of providing the feedstock in the form of substantially dry finely divided particles or fibres, mixing the feedstock with a suitable amount of a thermosetting resin in finely divided dry powder form and a suitable amount of a hydraulic binder in finely divided dry powder form, to give a dry starting material having a compression ratio of at least 2:1, and forming the starting material into a mat and pressing the mat at suitable conditions of temperature and pressure to compress the mat and to cause the thermosetting resin to set to form the 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 a finished product.

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First Claim