MATERIALS | POLYOLEFINS IMAGE: DOW
Right: Dow, W&H and B&B have devel- oped a recyclable MDO-PE bag for pet food packaging
and the use of its Baeropol T-Blends were used during the development phase of new higher-performing PCR resins for film applications. In another project, with Cascades
Flexible Packaging, the technology helps the company to achieve higher-quality recycled content and increase its use in film applications. “We are committed to developing films with a high percentage of recycled content, to improve our carbon footprint and provide higher quality to our customers,” said Fabricio Smillo, technical manager of Cascade Flexible Packaging. “We are collabo- rating closely with Baerlocher team and using T-Blends to increase the oxidative induction time (OIT), melt stability and physical characteristics of various PCR/PIR resin sources.”
Pet projects Mondi has developed recyclable, high-barrier packaging for Norwegian pet food manufacturer Felleskjøpet, that keeps material in circulation and avoids waste. Felleskjøpet is using Mondi’s FlexiBag Recycla-
Below: Felleskjøpet is using Mondi’s FlexiBag Recyclable for its Appetitt range of pet foods
ble, a pre-made mono-material polyethylene (PE) bag, for the relaunch of its Appetitt range of dry cat and dog foods. It will replace the previous multi- layer solution – and is recyclable in existing Norwegian plastic recycling streams. “This partnership was about designing appeal-
ing packaging, meeting the consumer need for convenience and product protection, and helping Felleskjøpet meet its sustainability goals,” said Pal Wikstrom, sales manager for Nordic consumer flexibles at Mondi. A slider enables easy opening and closing for bigger bags, while a handle allows for convenient
transportation. Hege Rosenhaug, product and development manager for pet food at Felleskjøpet, added: “The pet food is protected and kept fresh by the new packaging. This is an important step in our journey towards being a more environmen- tally responsible organisation.” Similarly,Dow – with machine manufacturers W&H and B&B – has developed a recyclable, wide-format MDO-PE bag – which uses only polyethylene (PE) and a minimal layer of EVOH.
The product is aimed at pet food packaging.
The challenge for recycling pet food packaging has been finding ways to maintain the efficiency of packaging production and its final qualities – while relying only a single material. “Packaging recyclability is a challenge that no one company can do alone,” said Romain Caze- nave, packaging EMEA marketing director at Dow Packaging & Specialty Plastics. “Our Elite, Innate and Affinity resins and sealants have helped realise the next generation of recyclable packaging.” The film was produced on a W&H Varex II machine with inline MDO. It has a final web width of 2 x 1260 mm and is optimised to reduce material wastage during production. It was then laminated at industrial scale before being made into bags on B&B’s side-gusseted SFB bag ma- chine. This produced 80 bags per minute, which is comparable to multi-material PET/PE structures.
PP extension Borealis has launched the first polypropylene (PP) grades based on its Borstar Nextension technol- ogy, which it says have superior properties for cast and blown film. The two BorPure film grades – RB787MF and RE539MF – are designed for eco-efficiency and recyclability, says the company. “Borstar Nextension technology will enable the development of novel and more circular solutions for a wide range of applications, especially in the packaging industry,” said Erik Van Praet, vice president of innovation & technology at Borealis. BorPure RB787MF and RE539MF are the first
resins made using the technology, which is now being scaled up. They have been designed for use in flexible packaging applications such as highly transparent thermoformable films, and sheets and lamination films for pouches and lid films. Blown film converters benefit from RB787MF’s
40 FILM & SHEET EXTRUSION | January/February 2023
www.filmandsheet.com
IMAGE: MONDI
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