MATERIALS | POLYOLEFINS
It’s a wrap Taghleef Industries has developed LMW2, an ultra-low-density wrap-around label film with high performance. It is designed to offer several advantages over traditional wrap around label films, including: material savings, thanks to its low density; high printing quality; and versatility – being ideal for use in a variety of wrap-around applications, especially carbonated drinks. It also has enough elasticity to resist deformation – when bottles inevitably expand due to carbonation. The film was tested together with several partners for bottling performance.
PP pouch Borealis has helped to develop a mono-material pouch – containing over 95% PP – that is designed for recycling. The high barrier packaging can be produced by blown and cast film extrusion processes.
Using conventional adhesion lamination,
producers have previously obtained pouch laminate materials containing around 90% PP. However, by pooling their respective areas of expertise, Borealis and its development partners have raised this to over 95%. It meets the Ceflex (Circular Economy for
Flexible Packaging) definition of ‘fully compatible with mechanical recycling PP’ – making it a cost- saving alternative to conventional pouch formats made of various materials, it says.
“Our aim is to uphold the integrity and quality of
packaging materials while ensuring that these convenient formats are more and more circular,”
Right: A new material called Stelora, from Borealis and Topas, has been used in a capacitor film
IMAGE: TERICHEM TERVAKOSKI
said Peter Voortmans, global commercial director consumer products at Borealis. Partners in the project included Mitsui Chemical
Group (for tie resins), Jindal Films (BOPP expertise), Profol (expertise in cast PP films) and Huhtamaki Flexible Packaging (converter).
PP/COC combination Borealis has also launched a new material whose first application is a highly heat-resistant capacitor film. The material, called Stelora, was developed with
Topas – which makes cyclic olefin copolymer (COC). Stelora combines COCs – a relatively new class of polymer – with polypropylene (PP). The result is a material called ethylene-propylene- norbornene (EPN) that can be used in advanced applications. It offers a sustainable alternative to conventional engineering polymers, says Borealis. Its first commercially available application is within a highly heat-resistant capacitor film. The dielectric capacitor film made offers all of the benefits of the equivalent made using PP as a dielectric, but with performance enhancements such as higher heat resistance, superior electrical properties at high temperatures, and increased efficiency. Stelora-based film is compatible with existing
converting lines, so can be processed by customers without the need for investment in new equipment, infrastructure or assets. “Stelora combines enhanced sustainability with
elevated performance and we are confident that, in a short time, it will replace existing engineering polymers in a range of applications,” said Ilkka Pentillä, CEO of Tervakoski Films, a long-standing Borealis customer of capacitor grades.
Clean PE Repsol has launched a range of ultra-clean polyethylene – designed to replace hard-to-recycle multi-material structures. The new range comprises two HDPE UltraClean
grades, two mLLDPE UltraClean grades and one EBA UltraClean material – which allow customers to design different types of single-material recyclable structures. The new PE range improves processability over
alternatives on the market by allowing higher stretch ratios and improving the performance of the final products, it says. The material achieves a stretch ratio up to 40% higher than non-ultra-clean grades, allowing the materials to be used in applications with maximum orientation and differentiated mechanical properties, according to Repsol.
36 FILM & SHEET EXTRUSION | January/February 2024
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