(PackagingNews) -- Plastic packaging specialist Nampak is looking to trial milk bottles with 30% recycled content after a university study found that 50% recycled content was a feasible target for HDPE milk bottles.
Using post consumer food grade rHDPE pellets, the experimental work assessed the properties of blends of virgin HDPE with between 10% and 50% rHDPE, and also quantified the effects on material properties of five thermal cycles through an extruder.
The researchers concluded that the recyclate grades studied had very similar properties - including flow behaviour, quality and molecular and chemical structure - to the virgin materials.