Abstract: Composite body having a laminate coating at least partially surrounding a core of the composite body, wherein a positive pressure is present at least in a portion of the core that is at least partially surrounded by the laminate coating, or a positive pressure is achievable at least in said portion of the core, in a delamination-free manner. The core is designed at least partially as open-cell foam, and/or a positive pressure is present in at least a portion of the laminate coating or a positive pressure is achievable at least in said portion of the laminate coating, wherein the core is at least partially designed as open-cell foam.