Nonwoven metal fabric and method of making same
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United States of America Patent
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Jul 1, 2003
Grant Date -
Jun 27, 2002
app pub date -
Oct 26, 2001
filing date -
Nov 7, 2000
priority date (Note) -
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Abstract
The present invention provides a nonwoven metal fabric for various uses, such as a filter used for purification of exhaust gas from automobiles or semiconductor manufacturing gas, a catalyst carrier of fuel cell, and so forth, in which the corrosion resistance is improved without compromising the property in terms of pressure loss. The nonwoven metal fabric of the present invention is formed with the metal fibers wherein the relation of the fiber diameter Da at the surface part of the gas inlet side and the fiber diameter Db at the central part of the thickness direction is expressed as the equation Da.gtoreq.1.5.times.Db and the fiber diameter Da at the surface part of the gas inlet side is not less than 15 .mu.m and not more than 60 .mu.m.
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