PROCESS AND APPARATUS FOR PREPARATION OF A MINERAL FIBRE PRODUCT.

摘要

The present invention relates to a process for the preparation of a mineral fibre board, and such a board having a dynamic elastic modulus which is substantially equal to the static elastic modulus in the order of magnitude. The process comprises provision of a primary web, compression of the primary web, doubling of the primary web under formation of a secondary web, curing of an added binder and optional compression of the secondary web.