Towpregs from recycled plastics by powder fusion coating and met

Details Towpregs from recycled plastics by powder fusion coating and met Towpregs from recycled plastics by powder fusion coating and met

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.

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