Filter element using corrugated media sheet
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United States of America Patent
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Feb 10, 2009
Grant Date -
Nov 17, 2005
app pub date -
Nov 19, 2002
filing date -
Dec 3, 2001
priority date (Note) -
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Abstract
A corrugated web having tapered flutes is usable in straight-through flow filter elements. The corrugated web can be made by passage between a pair of corrugated rollers having tapered teeth. Methods of making usable corrugated rollers include methods for generating the tapered teeth at the end points and the extension between the end points. Corrugated webs may be made from a variety of media, including certain media that stretches in the machine direction. Methods of forming the corrugated web into filter elements (e.g., air filter elements) includes forming filter media by securing a flat sheet to the corrugated web. The filter media may then be wound into a filter element, including application of sealant during the winding process to close selected flutes.
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