B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
18/6, 154/53.01,
B65H 75/02 (2006.01) B65H 75/20 (2006.01) B65H 75/50 (2006.01)
Patent
CA 1235867
ABSTRACT OF THE DISCLOSURE The disclosure concerns a non-thermal expand- ing spool for use in oxidation of green spun carbon fibers, subsequent to fiber spinning and prior to car- bonization. The spool is a hollow tube formed of a mandrel from a multi-ply, multi-directional woven graph- ite cloth impregnated with thermosetting resin, e.g. polyimide. Then a plurality of hoop fiber filaments are wrapped around it which also become impregnated with the thermosetting resin. The resulting tube or spool is then baked or cured at elevated temperatures. The baked spool is then provided with a large number of geometrically or randomly disposed holes or openings.
460669
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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