The Formulating PVC Products

Before PVC can be made into products, it has to be combined with a range of special additives. The essential additives for all PVC materials are stabilisers and lubricants; in the case of flexible PVC, plasticisers are also incorporated.

Other additives which may be used include fillers, processing aids, impact modifiers and pigments. Additives will influence or determine the mechanical properties, light and thermal stability, colour, clarity and electrical properties of the product.

Once the additives have been selected, they are mixed with the polymer in a process called compounding. One method uses an intensive high-speed mixer that intimately blends all the ingredients. The result is a powder, known as a ‘dry blend’, which is then fed into the processing equipment.

for more, pls contact：mandyzhang@novistagroup.com