MATERIALS | COMPATIBILISERS
Right: Stretch film contains 30% PCR,
made possible by creating a blend with Dow’s Revo- loop, which contains 70% PCR
Dow says it is aiming to help film and packaging
producers meet challenges in using recycled content in their products with its recently-launched Revoloop, a technology platform that enables mechanical recycling and also includes a new line of resins incorporating high PCR content levels. “Revoloop stands for a single-pellet solution that enables a simpler PCR process integration for film producers, thanks to the resin’s consistent quality and processability performance,” says Dow. “There is no sacrifice in the material quality and functional- ity in the final application. Furthermore, the resins’ optimised mechanical properties enable the incorporation of PCR into demanding applications and without increasing material thickness.” Initially developed for use in secondary and
tertiary packaging, new developments show the potential for use in other non-food contact applica- tions, says the company. Examples for the commer- cial use of Revoloop include collation shrink films with Revoloop XZ 89169.00, artificial turf applica- tions with Revoloop XZ 98612.00 and the latest development, Revoloop XZ 98615.00, a grade containing 70% PCR, which enables the production of high-performance machine stretch wrap film containing more than 30% PCR. Technologies within the Revoloop platform
include RecycleReady, which incorporates Retain polymer modifiers. A stand-up pouch made with Retain polymer modifiers was the first package of its kind with barrier film that can be recycled in a PE recycling stream when it was introduced several years ago. “When combined with other polyethyl- ene resins in a flexible packaging structure contain- ing a barrier layer such as PA or EVOH, the Retain compatibiliser offers a recyclable solution with enhanced optics and mechanical properties for films with barrier characteristics,” the company says. “Retain uses innovative recycle compatibiliser technology developed by Dow. Polar components are coated and encapsulated and disperse well. With further blending, resulting resins allow
converters to fabricate new recycled films without sacrificing physical or optical properties – and in some cases possibly improve upon them.” Dow has a second range of polymers for
recycling, Fusabond functional polymers, which can be added during the recycling-compounding step of multilayer films containing non-polar and polar components compatibilising the two phases and leading to improved processing, optics and mechanical properties.
Maleic anhydride grafts Acti-Tech compatibiliser 16MA11F is the latest addition to Nordic Grafting Company’s portfolio. It is based on a Vistamaxx semicrystalline copolymer from ExxonMobil, grafted with maleic anhydride (MA). NGC, a licensee of ExxonMobil technology, says the new additive, which is compliant with the EU 10/2011 food contact regulation, offers recyclers and processers an easy-to-add and universal compatibiliser for blends containing various diverse
Gel in PE recyclate without compatibiliser added 32 PLASTICS RECYCLING WORLD | May/June 2022
Gel in PE recyclate with 10 w% Yparex 0H17 added
www.plasticsrecyclingworld.com
IMAGE: YPAREX
IMAGE: DOW
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