Fibre-reinforced pressure vessel

A method of manufacturing a fiber-reinforced pressure vessel comprising:

• providing an inner vessel for receiving a filling medium made of a thermoplastic material, having an outer face, with at least one valve connection;
• welding a thermoplastic band at least on a portion of the outer face of the inner vessel, wherein the thermoplastic band comprises a fiber reinforcement comprising a carbon fiber containing fiber reinforcement, the thermoplastic band having a matrix material identical with the inner vessel, wherein a fiber composite layer is a layer with several plies of fiber composite material embedded in a thermosetting matrix, and the thermoplastic band has a thermal expansion coefficient lower than that of the inner vessel and is configured to keep any gap which may be created by thermal shrinkage between the fiber composite layer and the inner vessel smaller than would be the case without the presence of the thermoplastic band, and wherein the thermoplastic band and at least an innermost ply of the several plies of the fiber composite layer facing the inner vessel cross each other and are intertwined;
• and
• finishing the pressure vessel by applying a fiber composite layer on the outer face of the inner vessel provided with the thermoplastic band for providing pressure resistance of the pressure vessel.