COMBINED VAPOUR AND PARTICULATE FILTER

A personal respirator has a face mask and is provided with a filter unit comprising a canister housing contiguous layers of novel filter material. The filter material is suitable for both particulate and vapor filtration, and comprises a composite of first and second groups of chopped fibres, the fi...

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Bibliographische Detailangaben
Hauptverfasser:	PEARS, LAURENCE, ANTHONY, CHINN, MATTHEW, JOSEPH
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY FIRE-FIGHTING HUMAN NECESSITIES LIFE-SAVING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A personal respirator has a face mask and is provided with a filter unit comprising a canister housing contiguous layers of novel filter material. The filter material is suitable for both particulate and vapor filtration, and comprises a composite of first and second groups of chopped fibres, the fibres of the first group having a relatively large diameter (about 7x10m) and the second group having a relatively small diameter (about 0.5x10m).