Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – With subsequent uniting of the particles
Patent
1995-05-26
1997-07-01
Theisen, Mary Lynn
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
With subsequent uniting of the particles
264423, 264115, 264DIG48, B27N 300
Patent
active
056435070
ABSTRACT:
Filter media is provided. The filter media comprises a web of melt blown microfibers having one surface substantially flat and the other surface having periodic wrinkle-like undulations. A method of making the filter media is also provided. The filter media is useful in electret filters when charged.
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Berrigan Michael R.
Olson David A.
Griswold Gary L.
Hanson Karl G.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Theisen Mary Lynn
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