Fluid barrier face mask
First Claim
1. A fluid barrier face mask to be worn upon the face of a wearer and for providing filtering including the following, at least one layer of pre-bonded composite material formed by the combination of at least one layer of flexible plastic material and a layer of non-woven plastic fabric and with the flexible plastic material formed from openwork flexible plastic material for providing a plurality of perforations for allowing for the free passage of air through the openwork plastic while at the same time the at least one layer of pre-bonded composite material provides a barrier to the passage of fluids, and a layer of filter material for filtering impurities in the air and with the at least one layer of pre-bonded composite material and the layer of filter material molded together to form the face mask to the desired configuration to provide for filtering of impurities in the air while at the same time providing a barrier to the passage of fluids.
2 Assignments
0 Petitions
Accused Products
Abstract
A face mask to be worn upon the face of a wearer and for providing filtering of particular impurities in the air, including at least one pre-bonded composite layer formed by a combination of flexible plastic material and a non-woven fabric and with the pre-bonded composite layer molded generally to conform to the contours of the face of the wearer and forming a flexible support carrier for filter material and with the one pre-bonded composite layer providing a plurality of perforations through the one pre-bonded composite layer for allowing the free passage of air through the one pre-bonded composite layer while preventing the passage of liquid from a position outside the face mask, and a separate layer of filter material supported by the one pre-bonded composite layer and with the filter material filtering out the particular impurities in the air.
36 Citations
16 Claims
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1. A fluid barrier face mask to be worn upon the face of a wearer and for providing filtering including the following,
at least one layer of pre-bonded composite material formed by the combination of at least one layer of flexible plastic material and a layer of non-woven plastic fabric and with the flexible plastic material formed from openwork flexible plastic material for providing a plurality of perforations for allowing for the free passage of air through the openwork plastic while at the same time the at least one layer of pre-bonded composite material provides a barrier to the passage of fluids, and a layer of filter material for filtering impurities in the air and with the at least one layer of pre-bonded composite material and the layer of filter material molded together to form the face mask to the desired configuration to provide for filtering of impurities in the air while at the same time providing a barrier to the passage of fluids.
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9. A method of making a fluid barrier face mask to be worn upon the face of a wearer and for providing filtering including the following steps,
providing at least one layer of flexible plastic material formed from openwork flexible plastic material for providing a plurality of perforations for allowing for the free passage of air through the openwork plastic, providing a layer of soft non-woven plastic fabric, pre-bonding the at least one layer of flexible plastic material and the layer of soft non-woven plastic fabric to form a composite layer with the flexible plastic material providing a plurality of perforations for allowing for the free passage of air through the openwork plastic while at the same time the pre-bonded composite material provides a barrier to the passage of fluids, providing a layer of filter material for filtering impurities in the air, providing male and female molding members having a mold configuration conforming generally to the contours of the face of the wearer, moving the composite layer and the layer of filter material between the male and female molding members, and pressing the male and female molding members together to form the face mask to the desired configuration by molding the at least one composite layer including the openwork flexible plastic material to form a support layer to carry the layer of filter material to form the face mask which allows for the free passage of air through the openwork plastic while at the same time the pre-bonded composite material provides a barrier to the passage of fluids.
Specification