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US 12,673,282 B2Granted
Coalescer filter media
AssigneeHollingsworth & Vose Company
InventorsJulia Anuscha Kronawitt, Thomas Petri
Life of this patent
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Abstract
Filter media are generally described. In some embodiments, a filter media has one or more properties that enhance its suitability for use in coalescer filters. For instance, the filter media may have a particularly low pressure drop and/or may have a particularly high efficiency. In some instances, such properties may be obtained without the inclusion of fluorinated materials, government-regulated substances, and/or toxic substances (e.g., PFAS) in the filter media or with the inclusion of no more than de minimis amounts of such substances.
Claims20
A filter media, comprising:
- a fiber web, comprising glass fibers and a resin, wherein:
- the fiber web has a coalescer gamma value of less than or equal to 30,
- the fiber web has a basis weight of greater than or equal to 130 gsm, and
- the fiber web is oleophilic.
1 more element
A filter media, comprising:
- a fiber web, comprising glass fibers, wherein:
- the fiber web has a basis weight of greater than or equal to 130 gsm,
- the fiber web comprises pores,
- pores having a diameter of less than 1.25 microns make up less than or equal to 30% of the pores,
- pores having a diameter of greater than or equal to 1.25 microns and less than 2.5 microns make up greater than or equal to 40% of the pores, and
- a ratio of a number of pores having a diameter of less than 1.25 microns to a number of pores having a diameter of greater than or equal to 1.25 microns and less than 2.5 microns is less than or equal to 1.
3 more elements
Dependencies are inferred from the claim text.