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US 4,635,628 AGranted
Surgical face mask with improved moisture barrier
AssigneeTecnol, Inc.
InventorsVance M. Hubbard, Welton K. Brunson
Life of this patent
Estimating the term…
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AssigneeTecnol, Inc.
InventorsVance M. Hubbard, Welton K. Brunson
Estimating the term…
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.
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.
A face mask with an improved moisture barrier, comprising:
Dependencies are inferred from the claim text.