3. Extrusion of PVC window profiles

3.1 General information. Products to be extruded

The range of profiles contained in a system offers a wide variety of geometries covering a range of linear masses from a few tens of grams/metre to several kilograms/metre.

In addition, flexible sealing lips (single or multiple) are typically found co-extruded on frames, sashes and glazing beads.

Similarly, the need to diversify colors has led some manufacturers to co-extrude colored layers of PMMA (polymethyl methacrylate) a few tenths of a millimeter thick on the appearance faces of main profiles.

The manufacturer may also produce baseboards or spandrel panels in partitioned PVC or expanded PVC with compact skins.

Finally, the ever-increasing...