Respirator including contrast layer
Assignee3M Innovative Properties Company
InventorDean R. Duffy
Life of this patent
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Abstract
Various embodiments of a respirator and a method of making such respirator are disclosed. In one or more embodiments, the respirator includes a mask body and a harness attached to the mask body. The mask body can include an outer cover web, an inner cover web, a filtration layer disposed between the outer cover web and the inner cover web, and a contrast layer disposed between the outer cover web and the inner cover web in a sinus region of the mask body. A portion of the contrast layer can be visible through an outer surface of the outer cover web to form a contrast region of the mask body, where the outer surface of the outer cover web faces away from the filtration layer.
Claims12
A filtering face-piece respirator comprising a mask body and a harness attached to the mask body, wherein the mask body comprises:
- an outer cover web;
- an inner cover web;
- a filtration layer disposed between the outer cover web and the inner cover web;
- and
- a contrast layer disposed between the outer cover web and the inner cover web in a sinus region of the mask body, wherein a portion of the contrast layer is visible through an outer surface of the outer cover web to form a contrast region of the mask body, wherein the outer surface of the outer cover web faces away from the filtration layer wherein a portion of the inner cover web is folded over an upper perimeter segment of the mask body and over a portion of the outer surface of the outer cover web such that the portion of the inner cover web becomes the outermost layer of the mask body in at least a portion of the sinus region of the mask body, wherein the contrast layer is visible through the portion of the inner cover web that is the outermost layer of the mask body.
Dependencies are inferred from the claim text.