method for punching an attachment to a plastic fuel tank and a plastic fuel tank

摘要

method for punching an attachment to a plastic fuel tank and plastic fuel tank method for punching an accessory (4) to a plastic fuel tank, whereby: - the accessory (4) is equipped with a at least one hole (5) that goes straight through the fitting (4); at least something of the plastic from which the tank wall (1) is made is molten; - some of the molten plastic is forced through the hole (5) of the fitting without being detached from the rest of the molten plastic; the projecting molten plastic is shaped (8) to obtain a self-forming plastic rivet, and is allowed to solidify; the size and shape of the hole (5) and / or solidified plastic (8) such that the fitting (4) is mechanically attached to the tank by at least some of the solidified plastic (8), the punching attachment of the fitting (4 ) occurring at the time of manufacture of the tank (1) by molding a split preform or at least two parts.