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US 2009/0266759 A1Published application
Integrated nanofiber filter media
AssigneeCLARCOR Inc.
InventorThomas B. Green
Life of this patent
Estimating the term…
Abstract
A filter media is formed from electrospun fine fibers and coarse fibers which are entangled and integrated together into a single fiber composite filter media layer.
Claims29
A filter media, comprising:
- an entanglement of coarse fibers having an average fiber diameter of greater than about 1 micron and fine fibers having an average fine fiber diameter of less than about 0.8 micron, wherein the entanglement of coarse fibers and fine fibers form a single integrated filter media composite layer.
A method of making a filter media, comprising:
- forming a web of coarse fibers having an average fiber diameter of greater than about 1 micron;
- electrospinning fine fibers onto the web of the coarse fibers wherein the fine fibers are entangled with the coarse fibers, the fine fibers having an average fiber diameter of less than about 0.8 micron;
- and
- integrating the entanglement of the coarse fibers and the fine fibers to form a single integrated filter media composite layer.
1 more element
A method of forming a filter media comprising:
- forming a web of coarse fibers prior to completing a filter media substrate, the coarse fibers having an average fiber diameter of greater than about 1 micron;
- and
- electrospinning fine fibers and depositing the fine fibers on the web, the fine fibers having an average fiber diameter of less than about 0.8 micron.
Dependencies are inferred from the claim text.