Fibre board is prepd. from fibres, fillers, binders and other additives in the dry state, pressed into a board without the addn. of water and heated at the temp. the binder becomes effective. The fibres should be partially synthetic to act with the binder when pressed and the binder should be a combination of natural and modified starch and synthetic plastics e.g., melamine, urea phenol or resorcinol resin or powdered water glass, and pref. alkali cellulose fibres.
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