MATERIALS | POLYOLEFINS
Right: Borealis says the first PP grades using its Borstar Nextension technology offer superior properties for cast and blown film
consistent film clarity at high extrusion throughput, low overall migration, low seal initiation temperature, and high seal strength. RE539MF provides cast film converters with benefits including transparency, high stiffness balance with thermal stability, low overall migration and clean surfaces. Other advantages include high packaging line efficiency, packaging integrity and good organoleptics, says the company.
Design collaborations At K2022, ExxonMobil demonstrated how its Exceed S performance polyethylene (PE) can be used in film design – through collaborations with several other exhibitors. Producers have already commercialised bag-in-box liquid packaging, full-PE laminated food packaging and heavy-duty sacks for polymer resins, he said – and 80 projects are undergoing commercial-scale trials. Advantages of the material include its high stiffness and toughness – which help to simplify formulations, improve package durability and reduce film gauge. The material was showcased on a number of
Below: Innovia’s Rayoface CSA46 is aimed at food and beverage,
household and personal care applications
stands at the show. Windmöller & Hölscher ran a five-layer, 40-micron collation shrink film contain- ing 50% PCR. Exceed S 9243 and Enable 4002 were used to ensure that the film delivered acceptable holding force, stiffness, puncture and TD shrink.
In addition, Hosokawa Alpine featured Exceed S PE in high oxygen barrier concepts. These very high PE content (96-97%) MDO PE//PE laminates are alternatives to multi-material structures – which can be difficult to recycle. Exceed and Exact grades were used to deliver high stiffness and packaging integrity.
Cutting carbon impact Innovia Films has developed Rayoface CSA46 – a clear, one-side gloss-coated BOPP film. The product is aimed at food and bever-
age, household and personal care applica- tions. The 46-micron film is around 10% thinner than most facestock films. This gives it a higher yield and reduces its carbon impact compared to thicker coated facestock films, says Innovia. Rayoface CSA film is a high clarity, low haze film giving enhanced product visibility and a ‘no-label look’ appearance. It has a wide print window and is suitable for printing with flexo, gravure, screen offset and letter
42 FILM & SHEET EXTRUSION | January/February 2023
press – as well as with UV, low-migration and water-based inks. “The performance of CSA46 means it has
excellent cold foil adhesion and appearance, allow- ing eye-catching graphics and label designs,” said Alasdair McEwen, product manager for labels.
TF-BOPE gets OK SABIC says that Japan Steel Works (JSW) has validated the use of its LLDPE BX202 material – a linear low-density polyethylene (LLDPE) for processing on tenter frame extrusion equipment for biaxially oriented PE (TF-BOPE) packaging film. The collaboration endorses the use of the material
on JSW film lines, extends the machine supplier’s reach into BOPE film for flexible packaging. JSW has trialled the material on a pilot film manufacturing line in Japan, to prove its perfor- mance. The material combines processability with good mechanical and optical properties – including high transparency and superior impact strength, puncture resistance, tensile strength and stiffness compared to conventional blown PE film of equal thickness, says the company. This offers potential for downgauging and reductions in weight, material consumption and carbon emissions.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.ti-films.com �
www.borouge.com �
www.novachem.com �
www.saperatec.de �
www.henkel.com �
www.wentus.de �
www.chase-plastics.co.uk �
www.baerlocher.com �
www.mondigroup.com �
www.dow.com �
www.wh.group �
www.bub-group.com �
www.borealisgroup.com �
www.exxonmobil.com �
www.innoviafilms.com �
www.sabic.com �
www.jsw.co.jp/en
www.filmandsheet.com
IMAGE: BOREALIS
IMAGE: INNOVIA
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