a shaped body and a method for producing fiber composite components , wherein the shaped body is formed using a paper and / or cardboard material , at least in part . this makes possible cost - effective manufacture of hollow profiles of any desired length from fiber composite materials , in particular from prepreg materials and / or reinforcing fiber arrangements which are subsequently impregnated with a curable plastics material . the paper and / or cardboard material can be provided with further properties , such as gas - tightness and non - stick properties , by applying suitable functional layers . moreover , the material makes it possible to produce highly dimensionally stable shaped bodies or support cores , in such a way that fiber composite components having highly reproducible spatial dimensions can be produced . in addition , after curing , the shaped bodies can be collapsed in a simple manner by applying a vacuum and thus removed from the fiber composite component without residues .