The trial led to the successful development of what WRAP describes as world leading UK recycling technology that allows post-consumer milk bottles to be recycled back into food contact milk bottles.
It would now like to see plastics processors, packagers and retailers to adopt the new technology.
WRAP plastics technology manager Paul Davidson said: The milk bottles that the UK can produce as a result of this trial represent worlds best practice in plastic bottle milk packaging and will save significant amounts of energy and greenhouse gases, as well as making a major contribution to landfill reduction as the technology spreads through the milk bottling industry.
With consumers positively endorsing the use of recycled content in food packaging, there is a major incentive for more producers to adopt the technology and we want to make the transition from virgin to recycled content milk bottles as smooth as possible by sharing best practice.
The milk bottles contain 30% recycled content and perform identically to virgin residue bottles. The rHDPE bottles have passed UK and European Union and American consumer tests.
WRAPs trial involved Dairy Crest, Nampak and Marks & Spencer and was managed by NexTek.
The report can be downloaded at www.wrap.org.uk/plasticbottles