Method of manufacturing fiber-reinforced articles or plastics material

Claim 1

In a method of manufacturing a fiber-reinforced shaped article of plastics material for pipeline systems, the article including an inner casing of injection-molded thermoplastic material, the inner casing having tubular ends, and an outer casing of a fiber winding impregnated with synthetic resin, the method including winding a dry glass fiber fabric tape in accordance with a given program onto the inner casing, the tape being wound onto the inner casing so that at least the entire surface thereof is covered, immersing the article formed of the inner casing and the tape wound thereon into a resin bath while a negative pressure is maintained, the resin bath containing an ultraviolet light-setting resin, subsequently subjecting the resin bath to atmospheric pressure, the improvement comprising inserting a bushing in each tubular end, prior to winding the tape onto the inner casing, mounting the bushings on a support mandrel, closing the tubular ends by means of cover caps after the tape has been wound on the inner casing, wherein at least one of the cover caps includes a venting hose, such that the interior of the article is connected to the ambient pressure acting on the resin bath, removing the impregnated article from the resin bath and hardening the resin by means of ultraviolet light while the article is simultaneously rotated.