PVC profile (uPVC, rigid PVC) is the structural extrusion used for windows, doors, or trims. To give a wood-grain look, colour, or texture, a decorative foil can be laminated onto the PVC surface. This foil is typically a multilayer film that provides colour, UV stability, and scratch resistance.

Even though the foil provides decoration and surface protection, the PVC substrate itself must remain stable for decades in outdoor conditions. ALCAMIZER™ (hydrotalcites) products are key stabilizers for this.

Heat stabilization during extrusion & foil lamination, decomposes PVC at 180–200 °C and releasing HCl gas. During profile extrusion and hot foil lamination, ALCAMIZER™ products neutralizes HCl and prevent degradation. This ensures the substrate retains mechanical strength and bonds well to the foil.

Long-term weathering resistance. Coloured foils absorb more solar heat than white surfaces, stressing the PVC underneath. ALCAMIZER™ products provide acid scavenging and thermal buffering, protecting against yellowing, brittleness, and chalking under UV + heat.

Eco-friendly stabilization. Older stabilizers such as lead, cadmium and tin are no longer acceptable due to toxicity and regulation (RoHS, REACH). ALCAMIZER™ products are non-toxic, sustainable replacements.

Maintaining aesthetic Quality. Foiled profiles must stay dimensionally stable (no warping) and avoid discoloration that could show through the foil edges. ALCAMIZER™ products keep the PVC chemically and mechanically sound, ensuring the foil remains well-adhered and attractive.

Synergy with other additives. Formulations also use TiO₂ (UV protection), impact modifiers, lubricants. ALCAMIZER™ products prevent acidic degradation products from interfering with these additives.