Flexible plastic hinge molding method involves molding a fiber reinforced body with separate flap, retraction of a tool punch and injection of flexible plastic between body and flap

摘要

A retractable punch(9) is inserted a specific distance into molding tool cavity(4) opposite the back of intended hinge. The component is then molded in fiber reinforced plastic with a rib(7) on one tool part(2) forming a notch separating a main part and a flap of the component. After punch retraction thermoplastic plastic is injected into the vacated cavity(8) to form a strip hinge connecting the main part and flap of the component. . An Independent claim is included for a component comprising a main part and flap(6) of fiber reinforced plastic joined to each other by injection molding of a hinge in flexible thermoplastic