Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Bulk deposition of particles by differential fluid pressure
Patent
1990-01-16
1992-08-25
Lorin, Hubert C.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Bulk deposition of particles by differential fluid pressure
2642108, 26421115, 156167, D01D 5098
Patent
active
051416999
ABSTRACT:
A method for preparing melt-blown microfibers comprising extruding fiber-forming material through the orifices of a die into a high-velocity gaseous stream where the extruded material is rapidly attenuated into fibers, directing the attenuated fibers into a first open end of a tubular chamber disposed near the die and extending in a direction parallel to the path of the attenuated fibers as they leave the die, introducing air into the tubular chamber at a velocity sufficient to maintain the fibers under tension during travel through the chamber, and collecting the fibers after they leave the tubular chamber.
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Bodaghi Hassan
Krueger Dennis L.
Meyer Daniel E.
Griswold Gary L.
Kirn Walter N.
Lorin Hubert C.
Minnesota Mining and Manufacturing Company
Tamte Roger R.
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