Method of making a half shell

A method for producing a half-shell comprising an insert member for a high-pressure vessel using a mould having a first mould section forming a female mould, the method comprising:

• laying a pre-heated first plastic sheet on the first mould section;
• pressing or adhering, via one or more of a partial vacuum or a pressure, the first plastic sheet onto the first mould section;
• positioning the plastic of the first plastic sheet in areas behind a back-taper of the insert member at a lateral distance from the insert member, or positioning the insert member, after the pressing or adhering, so that plastic of the first plastic sheet is disposed in areas behind the back-taper of the insert member at the lateral distance from the insert member;
• and
• pressing or adhering, via a slide, partial vacuum, or pressure, the plastic of the first plastic sheet behind the back-taper and laterally distanced from the insert member, onto the insert member so that a space behind the back-taper of the insert member is filled with the plastic, wherein the mould comprises a second mould section forming a male mould, and the second mould section is run onto the first mould section, in order to form an internal contour of the half-shell.