Multilayer mineral fibre plates and process and apparatus for the production thereof

摘要

The invention relates to multilayer plates and felts of rock/mineral or glass fibers and a process and apparatus for producing same. Plates and felts of the invention are used in the building industry as heat-insulation materials of preference. They have the advantage of exhibiting significantly improved mechanical properties. <??>Multilayer plates of felts of rock/mineral or glass fibers are fabricated by complementing a basic layer (12) having essentially vertically arranged fibers with at least one additional layer (3,7) having essentially vertically arranged fibers. <IMAGE>