Many misconceptions exist in terms of the environmental credentials of PVC-U Less than 50% of the feed stock used in the manufacture of PVC is oil-based derivatives, unlike other bulk polymers, such as Low Density Polyethylene and High Density Polyethylene, where oil derivatives are the major ingredient.
PVC primary feed stocks are Common Salt (57%) and Ethylene (43%). In more recent times, the reliance on oil derived ethylene has been further reduced with the production of ethylene from sugar.
With respect to PVC, the ethylene requirement is further reduced by the addition of 50% wood flour. In this regard, Seventrust has made a decision to use wood flour that carries PEFC certification, further enhancing the sustainability credentials.
The recycling of PVC can be handled either directly through Seventrust, taking the benefit of our in-house recycling facility or by using one of our partner members of Recovinyl, who segregate material types on receipt and recycle accordingly.
Currently, very little WPC is entering the recycle market, however, as volumes grow, the industry will inevitably expand its recycling capabilities. The market requirement for recycled quality WPC is far greater than the current availability.
On a more general note with regard to the environmental credentials, Seventrust have exceeded government energy saving targets for the 10th consecutive year, which has resulted in a surplus of over 9,000 tonnes of CO2 (Carbon Credits).