SELF-SUPPORTING PLEATABLE FIBROUS WEB ESPECIALLY USEFUL AS OIL FILTER MEDIA AND OIL FILTER COMPRISING THE SAME
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United States of America Patent
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Issued Date -
Nov 2, 2017
app pub date -
Oct 30, 2015
filing date -
Oct 31, 2014
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Fibrous filtration media for hot oil filtration includes a nonwoven fibrous web containing synthetic fibers and at least about 15 wt. %, based on total weight of the fibrous web, of a binder component selected from thermoset binder resins and/or binder fibers. The synthetic fibers of the fibrous web will contain from about 2 wt. % to about 65 wt. %, for example between about 10 wt. % to about 50 wt. %, based on total weight of fibers in the fibrous web, of thermoplastic synthetic microfibers having an average diameter of less than 5μιτι. The synthetic fibers are bonded together with the binder component to form the fibrous web which is capable of forming a self-supporting, pleated oil filter media which retains pleats upon contact with oil having a temperature in a range encountered in an internal combustion engine.
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