As the push to boost the amount of recycled content used in packaging gathers momentum, blow moulding specialist W.Müller, in Troisdorf, Germany, is exploring technologies that will enable this to be used in the packaging of sensitive applications, such as cosmetics.
In particular, the company is hoping to finds ways to use more post-consumer recycled materials in its blow-moulded packaging solutions, while avoiding the migration issues associated its use.
To that end, W. Müller has tested two different technologies which would allow this to be achieved.
The company produced three different round bottles, each with a volume of 1l. The first was blow-moulded from pure PCR material; the second was made using its proprietary ReCo3 3-layer-co-extrusion system, in which a PCR layer of materials is sandwiched between two virgin layers of plastic. The third bottle was produced from 100% PCR material and shielded on the inside by a plasma coating.