Combined vapour and particulate filter

Details Combined vapour and particulate filter Combined vapour and particulate filter

B - Operations, Transporting

01

D

B01D 39/08 (2006.01) B01D 39/16 (2006.01) B01D 39/20 (2006.01) B01D 46/10 (2006.01) B01D 53/02 (2006.01) B01D 53/04 (2006.01)

Patent

CA 2401513

With reference to figures (1 and 2), a personal respirator (1) has a face mask (2) and is provided with a filter unit (3) comprising a canister (4) housing contiguous layers (5) of novel filter material (6). The filter material (6) is suitable for both particulate and vapour filtration, and comprises a composite of first and second groups (10, 11) of chopped fibres, the fibres of the first group (10) having a relatively large diameter (about 7 x 10-6m) and the second group (11) having a relatively small diameter (about 0.5 x 10-6m).

Ainsi que présenté sur les figures (1) et (2), un respirateur personnel (1) comportant un masque facial (2) est pourvu d'une unité filtre (3) qui comprend une cartouche (4) renfermant des couches contiguës (5) d'un nouveau matériau filtrant (6). Ce matériau filtrant (6), qui permet à la fois de filtrer les particules et la vapeur, comporte un composite constitué d'un premier et d'un second groupe (10, 11) de fibres coupées qui se caractérisent en ce que les fibres du premier groupe (10) possèdent un diamètre relativement important (de l'ordre de 7x10?-6¿m) et celles du second groupe (11) possèdent un diamètre relativement faible (de l'ordre de 0,5x10?-6¿m).

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