FIELD: process engineering.
SUBSTANCE: invention relates to filtration and may be used for protection of respiratory apparatus. Proposed filter comprises filtration layer for chemical filtration and folded filtration element including medium for filtration of particles and, at least, one medium for chemical filtration. At least, one filtration medium for chemical filtration of filtration element and, at least, one medium for chemical filtration of filtration layer are designed to filter different chemical substances. Device for protection of respiratory organs comprises face mask to cover, at least user nose and mouth. Face mask comprises inner space, filter described above and air intake path for feeding air in said inner space. Note here that said path passes through aforesaid filter.
EFFECT: efficient filtration.
15 cl, 7 dwg, 1 tbl
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Authors
Dates
2013-08-20—Published
2009-12-03—Filed