THIN WALL MOULDING | INNOVATION


He says: “To outsmart quick-witted counterfeit-


ers, manufacturers may need to deploy several tactics simultaneously to prevent brand value being diluted, including tamper evident bands, secure closures, snap buttons, barcoded labels and batch codes, and even chemical markers.” For packaging moulders producing thin-walled containers, or caps and closures, by the million, cost effectiveness remains vital. Gough highlights Sumitomo (SHI) Demag’s El-Exis SP range which, the company claims, typically achieves between 3% and 5% greater productivity compared with other packaging machines on the market. The fourth generation EL-Exis SP series is designed to with- stand the higher stresses and injection pressures that are necessary for achieving repeatability in closures and thin-walled packaging products, while maintaining comparable mechanical properties. At the time of writing, access to two new grades


of PP impact copolymer, from Azerbaijan-based Socar Polymer, may be influenced by geopolitical events. However, they are currently marketed to customers in Russia, Turkey and CIS (Russia plus eight former Soviet republics of Armenia, Azerbai- jan, Belarus, Kazakhstan, Kyrgyzstan, Moldova, Tajikstan and Uzbekistan). Socar Polymer’s CB4848 MO and CB 6448


grades are designed for rigid, thin-wall packaging such as caps, closures, and opaque containers, as well as for various housewares, sporting goods, and toys. Containing Milliken Chemical’s Hyper- form HPN additive, the CB 4848 MO (with MFR of 48) and CB 6448 MO (with MFR of 64) grades deliver moulded parts that the company claims


exhibit low shrinkage, improved thermal resistance, superior rigidity, dimensional stability, and a balance between stiffness and impact resistance. Socar Polymer worked collaboratively with


Milliken for a year to provide customers with these reactor grades of heterophasic copolymers, which use no organic peroxides, and are consistent with the company’s “zero-phthalate philosophy”. No catalysts or chemicals containing phthalate compounds are used at any stage of production. This latest collaboration built upon previous cooperation between the companies that led to the introduction of Socar’s first two random copolymer PP grades – RB 4545 MO and RB 6545 MO. Those grades use Milliken’s Millad NX 8000 family of clarifiers to boost clarity in thin wall injection moulded packaging products while maintaining a balance of overall properties. Milliken additives were also involved in the development of a new PP impact copolymer from US-based producer Flint Hills Resources. The American PP manufacturer’s new impact copoly- mer, AP5195-LV PP, is designed to deliver better impact strength, high melt flow and good stiffness. This is achieved using DeltaMax performance modifier from Milliken. “The balanced performance of Milliken’s additive technology enhances the resin architecture of our new AP5195-LV PP impact copolymer,” says Pierre Donaldson, Director of PP R&D for Flint Hills Resources. “By excelling in impact, melt flow and stiffness, our novel PP material can make it easier for converters to produce strong yet lightweight packaging, boost productivity, and reduce energy and plastic use to support environmental efforts. This new grade is an important addition to our portfolio and represents another major milestone in our successful collaboration with Milliken.” Brian Burton, Regional Director of Sales for


Milliken, says: “As one of the first resin suppliers to utilise our newest performance modifier, Flint Hills


www.injectionworld.com March 2022 | INJECTION WORLD 27


Above: Socar’s new compounds for thin wall packaging contain Milliken Chemical’s Hyperform HPN additive


Left: IML labels with unique identifiers, such as a QR code, holo- grams or tags, are other methods that can deter


counterfeiting, says Sumitomo (SHI) Demag


IMAGE: SUMITOMO (SHI) DEMAG


IMAGE: SOCAR


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