Process for the manufacture of a glass fibre-reinforced plastics

Details Process for the manufacture of a glass fibre-reinforced plastics Process for the manufacture of a glass fibre-reinforced plastics

1979-03-16

1981-09-08

Cockeram, H. S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

260 37R, 260 37EP, 260 37N, 264176F, 252182, 428304, 4284231, 428480, 528 48, 65 3C, 4284752, C08G 1814, C09K 300, B32B 502, C08K 340

Patent

active

042885639

ABSTRACT:
The process comprises mixing chopped glass fibres with plastics-forming ingredients and moulding or forming the mixture to obtain reinforced plastics articles. The invention lies in the use of chopped glass fibres in filamentary form. Conveniently the glass fibres are first made into a slurry or paste, which forms the aspect of the invention, with a liquid compatible with the plastics-forming ingredients or with all or a part of one or more of the ingredients. The invention includes a novel form of chopped glass fibres formed from glass strand bound with a size containing as the main ingredient one component of a plastics-forming mixture or a derivative thereof. It also includes apparatus for mixing the glass fibre paste or slurry with plastics-forming ingredients by impingement mixing.
The invention is of special use for reinforcing with glass fibres plastics articles, especially polyurethane plastics articles, formed by a Reaction Injection Moulding (RIM) process.

REFERENCES:
patent: 3458138 (1969-07-01), Yankee
patent: 3749638 (1973-07-01), Renaud
patent: 3829016 (1974-08-01), Scharfenberger
patent: 4073840 (1978-02-01), Saidla
patent: 4148854 (1979-04-01), Cordts et al.
patent: 4160073 (1979-07-01), Lloyd-Lucas et al.
"The Manufacturing Technology of Continuous Glass Fibres", by Loewenstein, pp. 19, 192, 198, 211-214 & 217-224 & 228, Elsevier (Amsterdam), 1973.

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