Method of making fibreboards by the dry method technique

Details Method of making fibreboards by the dry method technique Method of making fibreboards by the dry method technique

B - Operations, Transporting

27

N

18/1010

B27N 3/04 (2006.01) B27N 3/10 (2006.01)

Patent

CA 1195071

ABSTRACT OF THE DISCLOSURE A method of making fibreboards by the dry method technique where a lignocellulose-containing fibre material is disintegrated into fibres which are dried and formed into a fibre mat which is hot-pressed. Binding between the fibres is obtained by means of a binder which can be added before or after drying. According to the invention the binder is added before drying and the fibres with the binder are dried to have a moisture content substantially lower than that mois- ture content in the material which is suitable for hot-pressing. After drying, moisture is added to the fibre material in a degree such as to attain the moisture content suitable for hot- pressing whereby the tackiness of the binder, which has got lost to a great extent during drying, is restored.

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