Method of making a melt-blown filter medium for use in air filters in internal combustion engines and product
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United States of America Patent
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Aug 23, 2005
Grant Date -
Sep 9, 2004
app pub date -
Mar 3, 2003
filing date -
Mar 3, 2003
priority date (Note) -
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Abstract
The present invention involves using a melt-blowing process to make a filter medium defining pores having a pore size of between 3 and 12 microns. The filter medium is made of a thermoplastic polymer and is adapted for use in an internal combustion engine air filter. A profile is used in the melt-blowing process to mold melt blown fibers into the filter medium.
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