Compressed nanofiber composite media

a composite media and nanofiber technology, applied in the field of filter media, can solve the problems of engine damage, engine injector damage, engine flame-out,

Inactive Publication Date: 2011-09-01
CLARCOR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]A compressed nanofiber composite filter media according to various embodiments of the present invention includes at least one substrate and fine fibers carried thereby. Preferably, the compressed filter media includes multiple substrate layers, each of which carrying fine fibers. The multiple substrate and fine fiber layers are compressed together to form the compressed composite filter media. The compressed filter media according to various embodiments of the present invention is particularly well suited for a coalescing media to coalesce water in various hydrocarbon fuels. However, the compressed filter media can also be used in other filtration applications. For example, the compressed filter media can make a very efficient water filter element.

Problems solved by technology

Undissolved water can be harmful to engines.
Diesel engine injectors may be damaged by steam formation, jet turbine engines may flame-out, and gasoline engines may suffer ignition problems.
The presence of wetting agents or surfactants may interfere with the coalescence of water emulsions, especially in diesel fuel or jet fuel.

Method used

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  • Compressed nanofiber composite media
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Examples

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Embodiment Construction

[0049]Prior to turning to the details, some lexicography will be developed to assist in understanding the present invention. As used herein, the term “substrate” is meant to be broad in nature and meant to include any structure upon which fine fibers are carried or deposited. “Substrate” may include conventional formed filter medias such as scrims and the like that may be unwound from media rolls. Such filter medias have a fiber entanglement that typically bonded or secured together mechanically, chemically, adhesively and / or otherwise and thereby have strength such that they cannot be easily torn manually (e.g. a 1 square foot sheet typically holds up to application of tension of 5 lbs force) and have filtrations properties. “Substrate” may also include looser fiber entanglements that may not be bonded together or secured together (e.g. a 1 square foot sheet may fall apart upon application of tension of 5 lbs force). A “scrim” used as herein refers to woven or non-woven fiber entan...

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Abstract

A coalescing media includes a compressed composite filter media comprising substrate layers and hydrophilic fine fiber layers for separating free water emulsified in fuels.

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS[0001]This patent application claims the benefit of U.S. Provisional Patent Application No. 61 / 330,462 filed May 3, 2010; and U.S. Provisional Patent Application No. 61 / 308,488 filed Feb. 26, 2010; and U.S. Provisional Patent Application No. 61 / 383,487 filed Sep. 16, 2010; and U.S. Provisional Patent Application No. 61 / 383,569 filed Sep. 16, 2010, the entire teachings and disclosure of which are incorporated herein by reference thereto.FIELD OF THE INVENTION[0002]This invention generally relates to a filter media, and in particular to a compressed composite media comprising a substrate and fine fibers, and method of making the same.BACKGROUND OF THE INVENTION[0003]Hydrocarbon fuels, such as diesel fuel, jet fuel, and gasoline, can entrain small amount of water. The water may be introduced in the hydrocarbon fuels, for example, by leakage, accidental contamination, or atmospheric condensation. The hydrocarbon fuels can dissolve about 75 t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B01D39/14B01D39/18
CPCB01D2239/025B01D2239/064B01D2239/0695B01D2239/0668B82Y30/00B01D39/1623B01D2239/0631B01D2239/1233B01D39/02B01D69/04B01D69/10B01D69/12
Inventor LI, LEIGREEN, THOMAS B.
Owner CLARCOR INC
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