Process for producing a hollow profile of thermoplastic for window frames or door frames

摘要

The invention relates to a hollow profile of thermoplastic, for window frames or door frames, having a stiffening profile, in particular of metal, which lies in the profile cavity and against which projections of the hollow profile which project into the profile cavity lie in contact. The profiles are formed by inwardly directed deformations in at least one of the hollow profile side walls, which deformations are produced subsequently by heating. <IMAGE>