WERKWIJZE VOOR DE VERVAARDIGING VAN EEN FILTERMEDIUM, IN HET BIJZONDER VOOR NEVEL- EN STOFVERWIJDERAARS.

摘要

A method of manufacturing a fibre glass filter medium, particularly useful for demisters, and ensuring relatively small flow resistances. The method comprises preliminary cutting the fibre glass into 30-50 mm lengths, and then removing the contaminants by means of elevated temperature. Fibre glass thus pretreated is mixed with 15-40% wt. of polyester fibre, after which a fibrous mat is formed, the mat being compacted and joined by needling and the mat is burnt at a temperature barely sufficient to destruct the admixed polyester fibre.