Method for producing a polar-cap reinforcement for a pressure vessel, and pressure vessel having polar-cap reinforcement

A pressure vessel having an inner vessel and an outer layer of reinforcing fibers wound onto the inner vessel, wherein the inner vessel has a cylindrical central region and two curved polar-cap regions, which close openings of the cylindrical central region,

• characterized in that the outer layer of reinforcing fibers comprises polar-cap reinforcement comprising circumferential windings in at least one curved polar-cap region of the inner vessel, wherein producing the polar-cap reinforcement comprises:
• providing a shaping tool in the form of at least one curved, dome-shaped polar-cap region having a winding axis which extends along the longitudinal axis of the polar-cap region;
• and
• producing at least one polar-cap reinforcement on the shaping tool in that a preimpregnated fiber tape having a thermoplastic matrix is placed on the at least one polar-cap region and, wherein the preimpregnated fiber tape is wound onto the at least one polar-cap region as a circumferential winding with a continuous axial offset, wherein a lateral extent B of the preimpregnated fiber tape extends along the winding axis of the shaping tool and an energy of a heat source is coupled in between the preimpregnated fiber tape supplied and a respective placement zone of the preimpregnated fiber tape, as a result of which, in the region of said placement zone, at least the fiber tape to be placed and already-placed fiber tape fuse and are then consolidated.

A pressure vessel having a cylindrical central region and two curved polar-cap regions, which close openings of the cylindrical central region,

• characterized in that the at least one polar-cap reinforcement comprises circumferential windings and forms a curved polar-cap region of the pressure vessel, wherein producing the polar-cap reinforcement comprises:
• providing a shaping tool in the form of at least one curved, dome-shaped polar-cap region having a winding axis which extends along the longitudinal axis of the polar-cap region;
• and
• producing at least one polar-cap reinforcement on the shaping tool in that a preimpregnated fiber tape having a thermoplastic matrix is placed on the at least one polar-cap region and, wherein the preimpregnated fiber tape is wound onto the at least one polar-cap region as a circumferential winding with a continuous axial offset, wherein a lateral extent B of the preimpregnated fiber tape extends along the winding axis of the shaping tool and an energy of a heat source is coupled in between the preimpregnated fiber tape supplied and a respective placement zone of the preimpregnated fiber tape, as a result of which, in the region of said placement zone, at least the fiber tape to be placed and already-placed fiber tape fuse and are then consolidated.