Apparatus and high speed method for coating elongated fibers

Details Apparatus and high speed method for coating elongated fibers Apparatus and high speed method for coating elongated fibers

1993-02-19

1994-05-10

Owens, Terry J.

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

427174, 427180, 427195, 427565, 118 33, 118309, 118612, 118672, B05D 312

Patent

active

053105826

ABSTRACT:
An apparatus and method for uniformly coating a fiber or tow of fibers (10) with a powder at relatively high speed to produce a prepreg. The apparatus uses an elongated chamber (401) in a container (400) for confining the fiber which is coated by an aerosol of powder dispensed from a powder dispensing apparatus (500) in counter-current mode. A fiber tensioning apparatus (300) for the fiber maintains the proper tensioning of the fibers spread by a speaker (201) below the fibers on roller bars (203) so that the uniformly spread fibers are fed to the chamber (401). A heater apparatus (600) fuses the powder to the fiber and then is taken up on a spool (700).

REFERENCES:
patent: 3197324 (1965-07-01), Brooks
patent: 5042111 (1991-08-01), Iyer et al.
patent: 5042122 (1991-08-01), Iyer et al.
patent: 5102690 (1992-04-01), Iyer et al.
patent: 5123373 (1992-06-01), Iyer et al.
patent: 5128199 (1992-07-01), Iyer et al.
patent: 5213843 (1993-05-01), Working

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