Receptacle with integrally molded elongated elements

A method of forming a fuel tank may include providing a cavity for forming fuel tanks; inserting one or more elongated elements (30) within the cavity; placing a parison (12) in the cavity proximate to the elongated elements (30); and exerting fluid pressure on the parison (12) thereby deforming the parison (12) and engaging the elongated elements (30) with a surface of the parison (12).