Rigidized fibre filter element

Details Rigidized fibre filter element Rigidized fibre filter element

D - Textiles, Paper

04

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D04H 1/54 (2006.01) B01D 39/16 (2006.01) B29C 61/00 (2006.01) B29C 61/02 (2006.01) B29C 61/06 (2006.01)

Patent

CA 2087070

A rigidized fibre filter element is produced from a precursor fibre web according to various methods. The precursor fibre web contains heat-shrinkable fibres or binder fibres or both. The web is exposed to temperatures sufficiently elevated to cause shrinkage of the fibres or melting of the binder. After cooling the web, the filter elements produced are self-supporting, and may have densities up to 500 kg/m3 to improve filtration while retaining good functional characteristics for operating pressure drop and air permeability. Rigidized fibre filter elements can be constructed of one material, and thus may be suitable for recycling. 14

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