Steam heat-treatment method for polybenzazole fiber

Plastic and nonmetallic article shaping or treating: processes – Treating shaped or solid article – By a temperature change

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26421117, D01F 626, D01D 1002

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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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