FIELD: personal demand items.
SUBSTANCE: shaped respirator as a filtering face mask, containing a case with the shaped mask, including at least one filter layer and having the rear open side with the perimeter and the face seal, being connected to the perimeter of the mentioned mask body and extending inwardly from the mentioned mask body perimeter, terminating at the inner edge of the face seal. The mentioned face seal contains at least one water steam permeable layer, which pushes off the aqueous liquid as well.
EFFECT: purification degree increase.
23 cl, 4 dwg
Authors
Dates
2017-07-24—Published
2014-01-08—Filed