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MATERIALS | TECHNOLOGY COATINGS


Film adds to food safety


Aptar recently demon- strated its InvisiShield antimicrobial delivery system. It uses Aptar’s propri-


etary three-phase Activ-Polymer platform to mitigate the risk of food-borne illness from pathogens introduced through the supply chain. The material is deployed as an extruded Activ-Film material fixed to the lidding film of a package. After the package is sealed, the InvisiShield system releases a con- trolled amount of chlorine dioxide to reduce pathogens commonly associated with minimally processed foods. n For similar technology, see the smart packaging feature on page 37. � www.aptar.com


POLYOLEFINS Nova launches PE from recyclate


Nova Chemicals has developed a new, mechanically recycled polyeth- ylene resin. The grade, EX-PCR-NC4, allows


converters and brand owners to meet sustainability goals without compromising package perfor- mance – in applications such as shrink film,heavy-duty sacks and protective packaging. The material is made completely


from post-consumer recycled polyethylene (rPE). It is sourced from distribution centre flexible film, which includes a blend of back-of-


www.filmandsheet.com


successfully incorporated our new rPE resin into various end-use formats,” said Anna Rajkovic, circular economy market manager at Nova. Commercial quantities of the grade


are already available. Alan Schrob, mechanical recycling


store stretch and front-of-store consumer drop-off. Source materials are processed to have a low odour. “Through customer trials and


applications development, we have


director at Nova, added: “By utilising rPE, we’re diverting plastic waste from landfills while enabling a fully-recycla- ble new product. We aim to deliver commercial quantities of consistent high-quality rPE products to meet the needs of our customers.” � www.novachem.com


November 2022 | FILM & SHEET EXTRUSION 41 ADDITIVES


Spanish project develops antimicrobial facemasks


A collaborative Spanish research project is devel- oping masks and face shields with antimicrobial properties – to help prevent viral and bacterial infection. The project, called Dotmask, looks at new coatings and plastics obtained from plant extracts that improve the performance of personal protective equipment (PPE). The initiative is coordi-


nated by chemical com- pany Lamberti. Partners include


Aimplas, the Medical Research Institute of La Fe Hospital in Valencia, biotech company ADM Biopolis and mask manu- facturer Airnatech. The materials are being developed to reduce infec- tion from pathogens – which are frequently


transmitted by air. Viruses and bacteria can be particularly hazardous in hospital environments, where they can become resistant to drugs. Existing coatings typically


use inorganic, metal-based additives. However, has some disadvantages, such as a tendency to corrode in some environments and the possible release of active ions – with potential toxic


effect. Plant-based com- pounds could help to overcome these problems. Dotmask is developing materials based on bio- based phenolic compounds with strong antimicrobial activity for integration into PPE. The coatings will be applied to plastic sheet that is used to make protective face shields. � www.aimplas.es


IMAGE: NOVA


IMAGE: AIMPLAS


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