Hollow body and method for manufacturing this hollow body

摘要

A multilayer hollow article is made by welding together hollow molded pieces. The article includes barrier layer(s). Each barrier layer includes a barrier material and an internal layer of liquid crystal polymer. Independent claims are included for the following: (a) manufacturing the above article includes forming each piece in several stages and then welding them together. Each piece is made by placing a film of barrier material on a concave molding surface and covering it with a convex molding surface to shape the film. Then the mould surfaces are moved apart slowly so that the film remains on the concave surface. Thermoplastic is then injected into the mould to form a layer over the shaped film. The finished piece is then removed from the mould. (b) manufacturing the above article includes forming each piece in several stages and then welding them together. Each piece is made by molding it in thermoplastic and then painting the barrier layer onto the concave surface of the piece.