Process for manufacturing a plastic fuel tank

A process for manufacturing a fuel tank having a plastic wall, comprising:

• a) inserting a plastic parison comprising two distinct parts into an open two-cavity mold;
• b) inserting a core inside the parison, the core bearing two parts of a reinforcing element capable of securing two different locations inside the parison;
• c) firmly pressing the parison firmly against the mold cavities;
• d) fixing the two parts of the reinforcing element at the two locations of the parison using the core;
• e) withdrawing the core;
• f) closing the mold again, bringing its two cavities together in such a way as to grip the two parts of the parison around their periphery to weld them together;
• g) injecting a pressurized fluid into the mold and/or creating a vacuum behind the mold cavities to press the parison firmly against the mold cavities;
• h) opening the mold and extracting the tank;
• i) making an opening into the tank wall;
• and
• j) through the opening, putting at least a third part of the reinforcing element in place to link/connect the two first parts together.