Surgical face mask with improved moisture barrier
First Claim
1. In a surgical face mask of the type having a panel for covering the nose and mouth of a wearer, and means for securing the mask to the wearer'"'"'s face, the improvement in said mask comprising a barrier strip disposed across the top inside surface of said panel for restricting the permeation of moisture therethrough, said barrier strip comprising a synthetic resin material layer sandwiched between a polyester foam material layer and said panel.
4 Assignments
0 Petitions
Accused Products
Abstract
A surgical face mask (10) having a pleated panel (12) for covering the nose and mouth of a wearer, and including head straps (16,18,24,26) for securing the face mask (10) to the wearer. A polyester Sontara material (36) is flame laminated and compressed with an open-cell polyester foam (34) to form an integral laminate moisture barrier which is secured across the top of the pleated panel (12). The barrier restricts the moisture content of vapor from permeating the face mask (10) and clouding eyeglasses, or the like. A polyester top border strip (58) is folded around the top edge of the pleated panel (12), and a malleable stay (38) is sandwiched therebetween. The entire combination, including the moisture barrier (32) is heat seal bonded proximate the top edge of the face mask (10) by heat seal bond techniques.
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Citations
12 Claims
- 1. In a surgical face mask of the type having a panel for covering the nose and mouth of a wearer, and means for securing the mask to the wearer'"'"'s face, the improvement in said mask comprising a barrier strip disposed across the top inside surface of said panel for restricting the permeation of moisture therethrough, said barrier strip comprising a synthetic resin material layer sandwiched between a polyester foam material layer and said panel.
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10. A face mask with an improved moisture barrier, comprising:
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a panel constructed of a polyester material for covering a portion of a wearer'"'"'s face; means for fastening said panel to the wearer'"'"'s head; a moisture barrier constructed of a polyester material layer laminated to a polyester open-celled foam layer; a stay; a polyester border folded over the top edge of said panel and sandwiching said stay therebetween; and bonding means bonding said panel, moisture barrier and border together across the top inside surface of said panel and peripherally around said stay with said polyester material layer disposed between said open-celled foam layer and said polyester border. - View Dependent Claims (11, 12)
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Specification