Coating processes – Direct application of electrical – magnetic – wave – or... – Electrostatic charge – field – or force utilized
Patent
1992-03-09
1994-04-12
Bell, James J.
Coating processes
Direct application of electrical, magnetic, wave, or...
Electrostatic charge, field, or force utilized
427209, 427211, 4273741, 427486, 427185, B05D 100
Patent
active
053024192
ABSTRACT:
An improved flexible towpreg article and a method of production therefor. The improved flexible towpreg article comprises a prepreg which comprises reinforcing filaments and matrix forming material comprising recycled plastics; the reinforcing filaments being substantially wetout by the matrix forming material such that the towpreg plies have a low void content compared to the multiply towpreg. The method of production for the improved flexible towpreg article includes the steps of spreading the reinforcing filaments; coating the reinforcing filaments with the matrix forming material in a manner causing interfacial adhesion of the matrix forming material to the reinforcing filaments; forming the prepreg by heating the matrix forming material contacting the reinforcing filaments until the matrix forming material liquefies and coats the reinforcing filaments; and cooling the prepregs in a manner such that substantial cohesion between neighboring towpreg plies is prevented until the matrix forming material solidifies.
REFERENCES:
patent: 4714642 (1987-12-01), McAliley et al.
patent: 4804509 (1989-02-01), Angell et al.
patent: 5073416 (1991-12-01), Arokian et al.
Bell James J.
Georgia Tech Research Corporation
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