Filter media including a filtration layer comprising synthetic fibers
First Claim
1. A filter media, comprising:
- a non-woven web comprising;
first synthetic fibers having an average fiber diameter of greater than or equal to about 15 microns, wherein the weight percentage of first synthetic fibers of all fibers in the non-woven web is greater than or equal to about 40 wt. %; and
second synthetic fibers having an average fiber diameter of greater than or equal to about 0.5 microns and less than about 15 microns, wherein the weight percentage of second synthetic fibers of all fibers in the non-woven web is less than or equal to about 50 wt. %, and wherein the surface average fiber diameter of the non-woven web is greater than or equal to about 13 microns and less than or equal to about 17 microns and is measured using the formula;
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Accused Products
Abstract
Filter media comprising a filtration layer comprising synthetic fibers (e.g., pleatable backer layer) and related components, systems, and methods associated herewith are provided. In some embodiments, the filtration layer comprising synthetic fibers may be a non-woven web comprising a blend of coarse and fine diameter fibers. The filtration layer comprising synthetic fibers may be designed to have desirable performance properties without compromising certain mechanical properties, such as the pleatability of the media. In some embodiments, a filter media, described herein, may comprise the filtration layer comprising synthetic fibers and an efficiency layer. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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Citations
19 Claims
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1. A filter media, comprising:
a non-woven web comprising; first synthetic fibers having an average fiber diameter of greater than or equal to about 15 microns, wherein the weight percentage of first synthetic fibers of all fibers in the non-woven web is greater than or equal to about 40 wt. %; and second synthetic fibers having an average fiber diameter of greater than or equal to about 0.5 microns and less than about 15 microns, wherein the weight percentage of second synthetic fibers of all fibers in the non-woven web is less than or equal to about 50 wt. %, and wherein the surface average fiber diameter of the non-woven web is greater than or equal to about 13 microns and less than or equal to about 17 microns and is measured using the formula; - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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2. A filter media, comprising:
a non-woven web comprising; first synthetic fibers having an average fiber diameter of greater than or equal to about 15 microns, wherein the weight percentage of first synthetic fibers of all fibers in the non-woven web is greater than or equal to about 40 wt. %; and second synthetic fibers having an average fiber diameter of greater than or equal to about 0.5 microns and less than about 15 microns, wherein the weight percentage of second synthetic fibers of all fibers in the non-woven web is less than or equal to about 50 wt. %, wherein the surface average fiber diameter of the non-woven web is greater than or equal to about 13 microns and less than or equal to about 17 microns and is measured using the formula;
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19. A wetlaid non-woven web, comprising:
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first synthetic fibers having an average fiber diameter of greater than or equal to about 15 microns, wherein the weight percentage of first synthetic fibers of all fibers in the wetlaid non-woven web is greater than or equal to about 40 wt. %; and second synthetic fibers having an average fiber diameter of greater than or equal to about 0.5 microns and less than about 15 microns, wherein the weight percentage of second synthetic fibers of all fibers in the wetlaid non-woven web is less than or equal to about 50 wt. %, and wherein the surface average fiber diameter of the wetlaid non-woven web is greater than or equal to about 13 microns and less than or equal to about 17 microns and is measured using the formula;
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Specification