
The plastics industry fully supports recycling of many of its products.
Although it is a common perception that plastics are neither recycled nor re-used, there are long-established and highly successful plastic recycling schemes in place. For example, industry already recycles more than 500,000 tonnes of plastic packaging including about 150,000 tonnes of household plastic bottles. This is recycled into a number of products, such as damp proof membranes, dustbin bags and long-life, durable products such as litter bins and now even fashion clothing. And new EU legislation makes it possible to bring used food and drinks bottles back into food contact packaging applications.
Advances in recycling technologies are giving us the options of mechanical recycling or chemical/feedstock recycling for plastics packaging.
Mechanical recycling is straightforward and very well-established for single polymers and enables us to return waste material into high added-value products. Bottle recycling is a prime example.
But mechanical recycling is technically and economically difficult with mixed plastics packaging which may carry residues of the products they contain. Think or our ready meals we enjoy every day.
Mechanical recycling is straightforward and very well-established for single polymers and enables us to return waste material into high added-value products. Bottle recycling is a prime example
For mixed plastic waste, trials partly funded by WRAP are currently taking place in the UK to determine whether recent advances in plastics sorting technology make it technically, economically and environmentally feasible to mechanically recycle non-bottle mixed plastics household packaging – food trays, yoghurt pots, margarine and ice cream tubs – into useful, high-value, second life products.
Another option is to use established processes to manufacture lower value, wood substitutes which are weather-proof and hard-wearing. The technology has existed for some time but the economics have to be right and the demand for applications such as leisure and conservation areas in woodland, wetland and coastal areas has to be high.
There are now other increasingly important recycling options. An Austrian steel plant is currently chemically recycling plastics for use in its production processes. And oil refineries are developing viable feedstock recycling processes which take plastic back into oil, for example for lubrication or into naphtha or other chemical intermediaries.
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