Förfarande och anläggning för åstadkommande av en primärbana av en mineralfibermatta

摘要

The invention relates to a method for forming the primary web of a mineral fibre mat onto a moving, pervious base by transporting fibres onto the base by means of a stream of air or a corresponding means. In accordance with the invention, the stream of air is adjusted to minimise the pressure difference over the forming base. The invention also relates to an apparatus for the purpose of implementing the method.