Process for the manufacture of mineral fibre compositions.

摘要

A process for the production of a glass or other mineral fibre composition in which glass or other mineral fibre is melted, the molten glass or mineral is forced through a plurality of openings to produce fibres, the hot fibres are sprayed with a water dispersion of a binder and the fibres are dried at an elevated temperature, the binder comprising a gelatinised starch sulphamate product and a hydrophobic agent such as a silicone. The gelatinised starch sulphamate may be preformed by reacting a starch with a sulphamate salt or may be formed in situ by spraying onto the hot fibres a water dispersion of pregelatinised starch and a sulphamate salt. In this latter case part of the pregelatinised starch may be replaced by native starch.