FILTERING MEDIUM COMPRISING MINERAL FIBRES OBTAINED BY MEANS OF CENTRIFUGATION

摘要

The invention relates to a method of producing a filtering medium comprising a mineral fibre felt which is linked to a web. The inventive method consists of the following steps: fibres are formed using an internal centrifuging device comprising a fibre-forming spinner; a precursor of a binder is sprayed onto the fibres; the fibres are positioned on the web; and, subsequently, the assembly comprising the fibres and the web having a controlled thickness is heat treated such as to transform the binder precursor into a binder. The filtering medium thus obtained can be used to produce particularly effective bag filters.