Patent ID: 8720732

Claim:
A plastic fuel tank comprising an upper wall, a lower wall and at least two compartments, said compartments being established by a dividing wall comprising a part of the tank upper and lower walls, said dividing wall having at least one communication means enabling free flow of liquids between the at least two compartments and at least one communication means enabling free flow of vapors between the at least two compartments, said communications means enabling free flow of liquids and said communication means enabling free flow of vapors occupying less than 80% of the dividing wall when viewed along a contact line of said dividing wall, the at least 20% remaining of said dividing wall being constituted by at least one kiss point formed by welding together a multiplicity of contact points of the upper and lower walls, wherein there are at least two kiss points and centers of gravity of the respective at least two kiss points are substantially aligned.