Apparatus for coating fibers with thermoplastics

Details Apparatus for coating fibers with thermoplastics Apparatus for coating fibers with thermoplastics

1990-12-21

1992-08-04

Lusignan, Michael

Coating apparatus

Projection or spray type

Applying solid particulate material

118312, 239 79, 239135, B05B 700, B05C 500, B05C 1900

Patent

active

051349590

ABSTRACT:
A process for forming a thermoplastic resin coating on glass fibers comprises heating a thermoplastic resin powder until molten and applying it to the glass fibers. The coated fibers can then be heated and drawn into a desired shape which also removes resin. Then the coated fibers are cooled to make a preform. The coated fiber preform can then be molded. Several resin layers with glass fibers of varying lengths can be deposited to make a graded preform. Apparatus for forming a thermoplastic resin on glass fibers sprays hot thermoplastic powder on the glass fibers. The coated fibers can then be heated such as by IR lamps and then drawn through a die which has a spigot to remove excess plastic. Alternately, a plurality of plastic and glass fiber layers can be deposited on a veil.

REFERENCES:
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patent: 3677471 (1972-07-01), Deakin
patent: 3715076 (1973-02-01), Kenderi
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patent: 4614678 (1986-09-01), Ganga
patent: 4716072 (1987-12-01), Kim
patent: 4743413 (1988-05-01), Galichon
R. L. Stadterman et al., "Thermoplastic Composite-Products and Applications", Tappi Journal, vol. 71, No. 9, Sep. 1988, pp. 145-147.

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