Manufacturing method for plastic fuel tank for automotive vehicle, involves welding peripheral and border regions of film into fuel tank wall and around accessory projected out from wall

摘要

A film (22) with a peripheral region (28) and a border region (30) around the opening is placed on a fuel tank wall (10). The projection (24) of the accessory (14) e.g. vent valve, on the tank wall juts out of the film through the opening. The peripheral and border regions are welded on the tank wall and around the accessory, respectively, by laser or infrared radiation.