This method for fixing a base with at least one element of a liner (24) of a tank (22) for a pressurised fluid comprising a liner (24) in particular comprises forming at least one element of the liner (24) by rotational moulding or by extrusion blow moulding of a polymer on the walls of a mould, the polymer being heated so as to be malleable, and in particular cooling the polymer so as to secure the second portion (40) of the base (34) to the polymer.

The invention relates to a method for the production of a bladder accumulator (10) which separates two media chambers (16, 18) from one another in a storage housing (12) by means of a bladder body (14), comprising at least the following production steps:extruding a plastic tube over the bladder body (14);shaping the plastic tube with the integrated bladder body (14) in a molding tool that corresponds to a predeterminable plastic core container (20), andwinding at least one plastic fiber from the outside on the plastic core container (20) for the purpose of creating the storage housing (12).

The present invention relates to a method for manufacturing an internal shell of a composite type IV reservoir delimiting an internal cavity intended to accommodate a pressurized fluid and comprising at least one metal baseplate allowing connection between said internal cavity and the outside of the internal shell, said baseplate or baseplates being secured to the internal shell, said method comprising the following steps: a) a step of applying at least one adhesive layer of a first polymer to the part or parts of the metal baseplate or baseplates intended to be in direct contact with the material of which the internal shell is made; b) a step of incorporating said baseplate or baseplates thus coated into a mould the internal cavity of which is of a shape that corresponds to the shape of the internal shell that is to be obtained; c) a step of forming, on the internal wall of the mould and on the part or parts of the baseplate or baseplates intended to be in contact with the material of which the internal shell is made, at least one layer of a second polymer different from said first polymer and adhering to the first polymer, thus forming the aforementioned internal shell equipped with the aforementioned baseplate or baseplates.

A pressure vessel for storing gaseous fuel has a vessel wall which surrounds an interior, wherein one or more ribs are formed on the vessel wall. A pressure vessel system, particularly for a motor vehicle, includes at least two such pressure vessels. A method is disclosed to form the ribs on the vessel wall of the pressure vessel.

A high pressure media storage vessel including a wall made of at least one layer with barrier and piezoelectric properties.

A boss is configured for attachment to a liner of a pressure vessel. The boss includes a port, a neck and a flange. The port has a longitudinal axis and connects an interior and exterior of the pressure vessel. The flange includes an outer edge at a farthest radial extent from the longitudinal axis; an exterior side on a first side of the outer edge; and an interior side on an opposed second side of the outer edge. The interior side includes a first radially inner annular groove and a second radially outer annular groove. Each of the first and second annular grooves has a width at its opening that is equal to or greater than a width at its base. An assembly includes a liner having a first opening and a first boss attached to the liner at the first opening.

A storage tank for compressed substances includes a shell, a first layer of reinforcement material applied around the outside facing surface of the shell, an intermediate material provided on an outside facing surface of the first layer of reinforcement material, and a second layer of reinforcement material provided around at least an outside facing surface of the intermediate material.

A hollow roto-moulded article, having an inner wall defining an interior of the article and integrally formed structure with the inner wall, the integrally formed structure protruding away from the interior of the article, the article formed of a first layer including one or more thermoplastic polymers, and a second layer including one or more fibrous materials.