Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – With subsequent uniting of the particles
Patent
1994-01-14
1996-04-02
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
264115, 264122, 156167, 428903, B29C 7028
Patent
active
055037828
ABSTRACT:
A method of making a microfibrous sorbent article is provided. The method includes the steps of a) extruding molten thermoplastic fiber forming polymer from multiple orifices in a fiber-forming die, said orifices being aligned along the face of the die; b) attenuating the fibers in a stream of hot air to form a fiber stream of microfibers; and c) collecting said microfibers on a collector having a forming surface, said surface being aligned with said die and substantially parallel to and equidistant from said die such that the fibers form a spirally wound microfibrous sorbent article which is supported on its exterior surface by said forming surface and which is drawn across said forming surface substantially parallel to said die. Also provided is a microfibrous sorbent article prepared according to the method.
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Dyrud James F.
Insley Thomas I.
Meyer Daniel E.
Tamaki Cynthia Y.
Young Donald E.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Theisen Mary Lynn
Truesdale Carole
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