First defense nasal screens9/1/2023 The light adhesive allows the secondary outer filter layer 17 to trap larger particles that can be subsequently examined under microscope to determine what someone is being exposed to. An example adhesive is PS-1034A available from Polymer Science Inc., 2787 S. ![]() In an embodiment of the disclosure, the secondary outer filter layer 17 can be sprayed, such as an outer surface thereof, with a very light adhesive. With this exemplary material, smaller partials pass through the secondary outer filter layer 17 to the filter layer 12. In an exemplary embodiment of the disclosure, the secondary outer filter layer 17 can comprise a material such as PS-1025-2a provided by Polymer Science Inc., 2787 S. The secondary outer filter layer 17 can have a lesser filtering efficiency. The secondary outer filter layer may be applied in addition to the filter layer 12. 1-3, a nasal filter of an embodiment of a nasal filter structure in accordance with the disclosure can include a secondary outer filter layer 17. The filter 12 is also preferably designed to be up to 99% percent effective at screening particulate matter and other matter such as respiratory droplets and carcinogens. This fabric is comfortable while also mechanically stable allowing the fabric to be used effectively in the nasal filter disclosed herein. Similarly, transparent nonwoven fabrics could be utilized, which would also reduce the visibility of the nostril filter when worn. As would be appreciated by a person skilled in the art, various color nonwoven fabrics could be utilized so as to match the color of nasal filter as closely as possible to the color and hue of the user's skin, further diminishing the visibility of the nasal filter when worn. The PS-1025 is a ¾ ounce beige colored apertured spunlaced polyester fabric, with a total thickness of 0.003 inches. 47960, the technical disclosure of which is hereby incorporated by reference. An example of a nonwoven fabric is PS-1025 available form Polymer Science, Inc. In an embodiment of the disclosure, the microporous filter can be, for example, a nonwoven spunlaced polyester fabric.
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