COLOURS | MATERIALS
LYB announced a collaboration with Dacia for
the exterior design of the All-New Dacia Duster model. Exterior parts such as bumpers, trims, and body side mouldings across the model use “Starkle,” which uses a CirculenRecover PP com- pound containing 20% rPP, derived from PIR diverted from the manufacturing process of goods such as flexible packaging, LYB explains. Circulen- Recover polymers offer a mould-in-colour special effect with particles to highlight the use of recycled content. “It serves as a powerful demonstration that recycled materials can be both aesthetically pleasing and high-performing,” said Damien Laplane, Cross Car Line & Brand Experience Leader at Dacia, in the press release. The latest from Chroma Color is ChromaFresh, a scented colour concentrate line that offers masking of unwanted odors from recycled materials used in consumer products. It can also be used in automo- tive, healthcare, and pet products to promote a sense of cleanliness and freshness.
PCR carriers
PCR carriers for colour masterbatches can help companies meet recycled content goals, but they
do pose some practical challenges. One issue for polyolefins is that, because of the type of materials typically collected and recycled, PCR often has higher viscosity than what is typically used for masterbatches. Degradation is a risk, if the antioxi- dants have already been consumed through the first lifecycles (also see feature on in-line rheometry on page 23 in this issue). Another issue is that PCR is typically already coloured, so the masterbatch must over-colour the existing colour. Technologies that allow sorting of colour-speci- fic PCR can provide a better PCR source for a colour masterbatch, said Jim Wright at ColorTech, although variability can be an issue. The most widely available PCR is mixed colour, which results in dark grey. “It is difficult to overcome a dark gray when you want to formulate vibrant colours, such as fire engine red,” said Wright. He suggested that conversations throughout the supply chain may eventually lead to greater acceptance of adjusting a colour to enable use of mixed PCR. At Aimplas in Spain, a project evaluated the development of colour masterbatches using a carrier resin of previously coloured PCR. Luis Roca
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