Rotating drum accumulator for semi-aligned carbon fibers and pro

Details Rotating drum accumulator for semi-aligned carbon fibers and pro Rotating drum accumulator for semi-aligned carbon fibers and pro

1986-03-13

1988-06-14

Simmons, David

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Automatic and/or material-triggered control

28185, 156441, 4234471, 264 292, D01F 912

Patent

active

047509643

ABSTRACT:
A large number of melt blown carbon fibers from petroleum pitch through a multi-orifice die under continuous formation, are fed onto the periphery of a continuously moving endless conveyor surface whose surface speed is matched to the linear velocity of the melt blown carbon fibers to cause the fibers to be deposited in parallel alignment on the conveyor surface and to be maintained in fiber axial alignment to form a non-woven mat of aligned carbon fibers. The speed of the conveyor surface may be slightly less than the linear speed of the fibers to form a loose fiber mat to facilitate subsequent fiber oxidation and carbonization by permitting gas flow through the aligned fiber mat. The endless conveyor may comprise a cylindrical drum whose surface is perforated to facilitate gas flow and oxidation of the carbon fibers subsequent to non-woven mat formation. The drum circumference may be set to the desired fiber length and the mat severed transversely to permit removal of the aligned fibers of desired length in bundle form.

REFERENCES:
patent: 3051602 (1962-08-01), Schairbaum
patent: 3348107 (1967-10-01), Hamby
patent: 3676242 (1972-07-01), Prentice
patent: 3766003 (1973-10-01), Schuller et al.
patent: 4238175 (1980-12-01), Fujii et al.
patent: 4375446 (1983-03-01), Fujii et al.
patent: 4576810 (1986-03-01), Redick
patent: 4590055 (1986-05-01), Yamada et al.

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