A method of coating a fibre mat with a heat resistant foam material.

摘要

A mineral fibre mat (3) is coated with a fire resistant elastic silicone foam material which straightens the mat in its plane and extends to a uniform depth into the mat. The product may be produced by introducing a foamable liquid composition (2) of materials into a mould (1), by the mat (3) being selected such that it has a density lower than that of the unfoamed composition (2), by the mat being laid on the unfoamed composition in the mould, by the mat (3) being allowed to assume a position of floating equilibrium in the unfoamed composition (2) and by the composition then being allowed to foam up to the intended extent and subsequently cure, after which the composite product is removed from the mould.