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US 8,257,459 B2Granted
Waved filter media and elements
AssigneeHollingsworth & Vose Company
InventorsDavid T. Healey, Richard Gahan
Life of this patent
Estimating the term…
Abstract
Various high performance, high efficiency filter media are provided that are cost effective and easy to manufacture. In particular, various filter media are provided having at least one layer with a waved configuration that results in an increased surface area, thereby enhancing various properties of the filter media. The filter media can be used to form a variety of filter elements for use in various applications.
Claims20
A filter media, comprising:
- a fine fiber filtration layer comprising a plurality of waves having peaks and troughs in a waved configuration, the fine fiber filtration layer comprising fibers having an average diameter of less than 10 microns;
- and
- a coarse support layer comprising a plurality of fibers that holds the fine fiber filtration layer in the waved configuration, the coarse support layer having an air permeability in the range of about 300 CFM to 1000 CFM, wherein the coarse support layer extends across the peaks and into the troughs to fill the troughs,
- wherein the filter media has an overall thickness in the range of about 1.5 mm to 25 mm, an overall basis weight of between 70-1100 gsm, and a dust holding capacity of at least 8 g/ft2.
1 more element
A filter media, comprising:
- a fine fiber filtration layer comprising a plurality of waves having peaks and troughs in a waved configuration, the fine fiber filtration layer comprising fibers having an average diameter of less than 10 microns;
- and
- a coarse support layer comprising a plurality of fibers that holds the fine fiber filtration layer in the waved configuration, wherein the coarse support layer extends across the peaks and into the troughs to fill the troughs,
- wherein the filter media has a DOP alpha value of greater than about 9, an overall basis weight of between 70-1100 gsm, and a dust holding capacity of at least 8 g/ft2.
1 more element
Dependencies are inferred from the claim text.