Production of fibres

Details Production of fibres Production of fibres

1978-03-10

1979-12-11

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

Utilizing centrifugal force or rotating forming zone

264 12, 264164, 264236, B22D 2308

Patent

active

041783360

ABSTRACT:
Formaldehyde resin fibres, in particular urea formaldehyde resin fibres, are produced by introducing a liquid formaldehyde resin and a catalyst into a spinning cup in the presence of cold humid air which inhibits drying and reaction, centrifugally spinning fibres from the cup into the path of hot air currents, at between 50.degree. C. and 100.degree. C., which dry the fibres without curing them, and curing and chemically stabilizing the dry fibres by heating at above 100.degree. C. until they are insoluble in cold water.

REFERENCES:
patent: 1357206 (1920-10-01), Zuller
patent: 2336743 (1943-12-01), Manning
patent: 2433000 (1947-12-01), Manning
patent: 3174182 (1965-03-01), Duncan

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