METHOD OF MANUFACTURE OF TWO-OR MULTI-LAYER BOUNDED MINERAL FIBRE BOARDS AND INSTALLATION DESIGNED FOR MANUFACTURE OF TWO- OR MULTI-LAYER BOUNDED MINERAL FIBRE BOARDS

摘要

Process for producing mineral fibreboard comprises a fleece of greater than twice the finished product thickness (2 t) being compressed (17) to a first thickness of 0.8-1.5 (preferably 0.9-1.3) t without longitudinal compression to a weight per unit area of W. The fleece is then longitudinally compressed by roller systems (30,32) without pleating to a unit weight of 2-10 W and a thickness of 1-1.3 and preferably 1-1.1 t. The fleece is then tightly held and fed to a bonding oven (25).