Plastic and nonmetallic article shaping or treating: processes – Treating shaped or solid article – By a temperature change
Patent
1992-12-03
1994-02-22
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Treating shaped or solid article
By a temperature change
26421117, D01F 626, D01D 1002
Patent
active
052884520
ABSTRACT:
This invention aims at improvement of heat-treatment technology for manufacture of large amounts of polybenzazole fibers. The fibers are heat treated using steam as the heat treatment gas in a device that provides for a rapid, cocurrent, countercurrent or both cocurrent and countercurrent flow of steam.
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Brumm Margaret M.
Tentoni Leo B.
The Dow Chemical Company
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