Joining glass-fibre-reinforced, laminated, plastics components - by cutting back successive plies to form steps which fit steps cut in opposite laminate end, and lap joining free end of reinforcements

摘要

To achieve a positive connection of (glass-fibre) -reinforced plastics laminated mouldings e.g. containers, pipe sections and fittings, the plies are successively cut back at the edges to be joined to form steps receding as viewed from a butt end of the inner plies. This stepping is effected so that the gaps between abutting ply ends increases in an outward direction. The length of each step is many times that of its weight. Reinforcing plies protruding from the ends of the plies overlap the abutting ends of the inner plies and are embedded in a lamina that fills the steps. Used for securely joining plastics laminated components e.g. tanks contg. corrosive substances, large-dia. pipeline sections. Process is relatively simple. Joints have substantial tensile strength whilst being only negligibly thicker than the components themselves.