Fire-retardant filter medium and air filter unit

Details Fire-retardant filter medium and air filter unit Fire-retardant filter medium and air filter unit

B - Operations, Transporting

01

D

B01D 39/16 (2006.01) B01D 39/08 (2006.01) B32B 5/26 (2006.01) B32B 27/00 (2006.01) B32B 33/00 (2006.01) E04B 9/02 (2006.01)

Patent

CA 2262821

A fire-retardant, gas-permeable base material is provided at least on one surface of a porous film of polytetrafluoroethylene (PTFE) to provide a filter medium, which is usable for ceiling materials and has an excellent flame resistance, and an air filter unit using the filter medium.

On dépose des matériaux de base perméables au gaz et résistant au feu sur au moins une surface d'un film poreux de polytétrafluoroéthylène (PTFE) pour constituer un milieu filtrant. On utilise ce dernier, parfaitement ininflammable, pour des revêtements extérieurs pour toit. L'invention concerne également un filtre à air utilisant ce milieu filtrant.

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