Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – With subsequent uniting of the particles
Patent
1997-10-01
2000-05-30
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, 264460, 264115, 264DIG48, B29C 3516
Patent
active
060687991
ABSTRACT:
An electret article can be made by quenching a molten blend containing a polymer and a performance-enhancing additive. The resulting low crystallinity material can be annealed and charged to produce a material for making electret filters having superior oily mist loading performance properties.
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Jones Marvin E.
Mei Betty Z.
Rousseau Alan D.
3M Innovative Properties Company
Hanson Karl G.
Rosenberg Frank
Theisen Mary Lynn
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