MATERIALS | ADDITIVES
Milliken’s DeltaMax performance modifier. At Aaron’s exhibition stand, Robert M. Tocci, VP, said the launch of the Jet-Flo compound was part of the company’s strategy to produce higher value recycled compounds and branch out from the commodity products it has been making until now. “We’ve got to be making a compound as good as
Tests by BYK have found that recycled PP from battery cases can be used in high end applications when its Recyclostab 451 stabiliser is added Source: BYK
restoring recyclate to perform as well as virgin polymers has benefits that include an increase in value, as they can be used in thin- or thick-walled products that have a longer life and may be recycled again. Inch said: “BYK has a toolbox of materials to improve the life of the plastics article.” BYK has developed Recyclostab additives for the purposes of restabilising recyclate in new compounds. Inch presented an example of PP car battery cases which can be reused in high end applications with the addition of Recyclostab 451. This additive improves the long-term thermal stability of PP recyclate and also minimizes the negative effect of acid residues. Inch presented other additives to restore
recyclate (and often also used in compounding virgin polymers). BYK-P 4200 is a VOC stripping additive which forms micro foam in the compound- ing extruder and this collapses in the vacuum degassing stage and is extracted along with VOCs. PolyAd PR010 is “a very effective material” for recycling polycondensation polymers such as PET, he said. The additive acts as a stabiliser, chain extender, property modifier and melt strength enhancer. Inch also presented BYK’s Scona compatibilisers and coupling agents, showing how additives can also improve the property of poly- mers beyond their first use. (See Plastics Recycling World’s March-April 2019 issue for more on compatibiliser additives.) Milliken and its customer Aaron Industries gave a clear demonstration in Cleveland of how additives and recom- pounding can help a recycler expand its products and reach new customers. At Plastics Recycling World Expo, Aaron Industries launched Jet-Flo Polypro, a high melt flow recycled PP compound it produces using
16 PLASTICS RECYCLING WORLD | July/August 2019
a virgin one,” said Tocci, as Aaron’s customers have been asking for recycled PP that performs better. The company is focusing on housewares manufac- turers and is targeting Jet-Flo at applications such as totes and containers where the compound’s high melt flow enables injection moulding with thinner walls. As these large containers use a lot of material, making them with thinner walls reduces cost for the customer, in addition to the sustainability benefits of using recycled PP, he said. Aaron and Milliken finalised the development of
the Jet-Flo PP compound in seven months. The product is regionally available in eastern parts of the US and Canada and is supplied as pellets in black and grey colors. Milliken also displayed Aaron’s PP tote on its stand in Compounding World World expo, along with the products of two other customers that use its DeltaMax additive. Exxel Polymers is using DeltaMax to make a recycled PP compound and Global Polymers’ PPC-55-BK recycled PP compound, utilising DeltaMax, was shown used for black storage boxes. Milliken, which introduced DeltaMax perfor- mance modifier masterbatches at NPE 2018, said Deltamax m100 melt flow modifier can raise melt flow by as much as five times while maintaining impact performance and stiffness in PP impact copolymer (ICP). DeltaMax i300 impact modifier increases impact strength by as much as three times by optimising rubber dispersion and domain size.
Below: At Plastics Recycling World Expo in May, Aaron Industries launched Jet-Flo Polypro, a high melt flow recycled PP compound that uses Milliken’s DeltaMax performance modifier. The compound is suited for thin wall moulding of totes
www.plasticsrecyclingworld.com
PHOTO: MILLIKEN
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