PROCEDURE FOR THE MANUFACTURE OF HEAT-INSULATED COMPOSITION PROFILES FOR WINDOW FRAMES OR SIMILAR PARTS, METAL PROFILES FOR USE OF THE PROCEDURE AND DELIVERY TOOLS FOR THE EXERCISE OF PROCESSING

摘要

1. Method for the production of thermally-insulated composite sections for window frames or the like, which have at least two metal section parts (1, 2), which are connected with each other through at least one intermediate piece (15) of thermally insulating material, in which the two metal section parts are firstly integrally connected with each other by at least one connecting cross-piece (3) of the same material, and at least one channel (11), preferably open to the exterior, being formed and being filled with the thermally insulating material forming the intermediate piece, and in which, after hardening of the insulating material, the connecting cross-piece is separated at predetermined, weakened separation points (20) and removed, characterised in that the connecting cross-piece is continuously subjected to a tensile load, acting in the plane of the connecting cross-piece and transversely to its longitudinal extent, in the transition zone (20) between the connecting cross-piece and the metal section parts connected therewith in the longitudinal direction, and is thereby continuously separated from the metal section parts.