Abstract: Hollow extrusions are formed by initially extruding a plurality of separate strands adapted to form segments of the completed hollow extrusion in their positions corresponding to the locations of those segments in the finished extrusion. Webs between these strands are then formed by feeding an afterflow of the melt at press pressure into the shaping channel in the calibrator downstream from the die zone so that under the pressure of this melt and the melt heat, the webs fuse to the ends of ribs of the separate strands.

Abstract: The invention relates to a spacer profile of an elastically-plastically deformable material with low heat conductivity for a spacer frame to be mounted in the marginal area of at least two spaced-apart panes by forming an intermediate pane space, whereby the spacer profile comprises a chamber which has in one of its walls at least one elastically-plastically deformable reinforcement element extending along the chamber, and whereby the spacer profile has a diffusion-proof layer extending substantially over its entire width and length. In order to produce the profile through cold flexion, the lateral walls of the chamber are each provided with at least one reinforcement element.

Abstract: A spacer profile for a spacer frame to be mounted in an insulating window unit by forming a space between the panes, with a chamber for receiving hygroscopic materials and with at least one contact web to lie against the inner side of a pane, which is connected via a bridge section with the chamber, is characterized i that the profile corpus of the spacer profile consists of an elastically-plastically deformable material with poor heat conductivity, and that at least the contact webs are permanently materially connected with a plastically deformable reinforcement layer.