Method and tool for producing a pressure container and pressure container
A pressure vessel having an inner container made of thermoplastic plastic, and at least one metal part embedded in the inner container. A collar that includes the metal part is formed on the inner container, the collar being configured such that it is gas-tight with respect to the metal part.
1. A method for producing a pressure vessel comprising an inner container made of thermoplastic plastic, the method comprising:
blow-molding the inner container from a preform in a tool; and
embedding, during the blow molding, at least one metal part in the inner container,
wherein the blow molding of the inner container includes forming a collar on the inner container so as to be gas-tight with respect to the at least one metal part, the collar including the at least one metal part.
2. The method of claim 1 , wherein the blow molding of the inner container includes sealing the collar from the at least one metal part by a flexible sealing element.
3. The method of claim 1 , wherein the inner container, at the collar, is axially separated outside a seal against the at least one metal part.
4. The method of claim 1 , wherein the at least one metal part comprises a valve receptacle.
5. The method of claim 1 , wherein the at least one metal part has a non-rotationally symmetric shape, so that as a result of being embedded in the inner container, the at least one metal part serves as a positive-locking anti-twist device.
6. The method of claim 1 , wherein the at least one metal part has moldings so that positive-locking axial displacement protection is provided.
7. The method of claim 1 , wherein, before the blowing molding of the inner container, the at least one metal part is fitted on an injector for the injection of a gas.
8. The method of claim 7 , wherein the at least one metal part is fitted onto an adapter which is rotatable and axially fixed on the injector.
9. A method for producing a pressure vessel comprising an inner container made of thermoplastic plastic, the method comprising:
blow-molding the inner container; and
embedding at least one metal part in the inner container,
wherein the blow molding of the inner container includes forming a collar on the inner container to be gas-tight with respect to the at least one metal part.
10. A method for producing a pressure vessel comprising an inner container made of thermoplastic plastic, the method comprising:
blow-molding the inner container; and
embedding, during the blow molding, at least one metal part in the inner container,
wherein the blow molding of the inner container includes forming a collar on the inner container, the collar including the at least one metal part.