COATINGS & FLOORING
COATINGS & FLOORING
PVC finished articles are mainly produced via calendering or spread coating (plastisol).
In some applications, the combination of PVC with other materials like polyester or glass fibres provide excellent mechanical properties and very good dimensional stability, durability, hygienic properties, stain resistance, weather resistance, heat ageing resistance and aesthetic appearance.
Examples of PVC finished articles are: tarpaulins, tents, hospital and gym floors and wall coverings. Specific types of stabilisers are selected for these applications according to production technology and process conditions. Stabilisers should provide good early colour and heat stability, good transparency (in case of clear wear layer), good printability, low VOC (volatile organic compounds), low phenol and low odour. For foamed PVC formulations, special type of stabilisers used are called kickers. Normally they are liquid based on K and Zn carboxylates of solid ZnO. These products work as heat stabilisers and activate decomposition of PVC blowing agent (usually azodicarbonamide) at low temperatures. Wall covering and flooring industries are normally using kickers