Filter element with high temperature polymer retaining straps and method of manufacture
AssigneeBHA Altair, LLC
InventorsCynthia Marie Polizzi, Vishal Bansal, Bryan David Yetter
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Abstract
A filter element includes a filtration media formed into a tubular configuration. The filtration media includes a plurality of circumferentially spaced apart pleats. The filter element includes at least one retaining strap extending circumferentially around the filtration media to limit movement of the filtration media The at least one retaining strap has a ratio of flow direction tensile modulus to perpendicular direction tensile modulus of 1.5 or less. A method of fabricating a filter element is also provided.
Claims20
A filter element including:
- a filtration media formed into a tubular configuration and including a plurality of circumferentially spaced apart pleats;
- and
- at least one retaining strap extending circumferentially around the filtration media to limit movement of the filtration media, the at least one retaining strap having a ratio of flow direction tensile modulus to perpendicular direction tensile modulus of 1.5 or less.
A method of fabricating a filter element, the method including the steps of:
- providing a filtration media formed into a tubular configuration and including a plurality of circumferentially spaced apart pleats;
- extruding a polymer extrudate through an extrusion flow channel;
- and
- applying the polymer extrudate to extend circumferentially around a portion of the filtration media to form a retaining strap that extends circumferentially around the filtration media to limit movement of the filtration media, the retaining strap having a ratio of flow direction tensile modulus to perpendicular direction tensile modulus of 1.5 or less.
Dependencies are inferred from the claim text.