Blowing gases in electroblowing process

Details Blowing gases in electroblowing process Blowing gases in electroblowing process

2004-11-05

2010-12-07

Tentoni, Leo B (Department: 1742)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Extrusion molding

C264S085000, C264S103000

Reexamination Certificate

active

07846374

ABSTRACT:
The present invention is directed to a method for preparing a nanofiber web by feeding a polymer solution, which has at least one polymer dissolved in at least one flammable solvent to a spinning nozzle, discharging the polymer solution from the spinning nozzle into a blowing gas or gas mixture that will not support combustion, wherein the blowing gas exits a jet at a lower end of the spinning nozzle, to form polymer nanofibers and collecting the polymer nanofibers on a collector under the spinning nozzle, wherein an applied high voltage differential is maintained between the spinneret and the collector.

REFERENCES:
patent: 7297305 (2007-11-01), Andrady et al.
patent: 2005/0073075 (2005-04-01), Chu et al.
patent: WO 03/015927 (2003-02-01), None
patent: WO 03/080905 (2003-10-01), None
patent: WO 2005/026398 (2005-03-01), None
patent: WO 2005/033381 (2005-04-01), None

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