MATERIALS | POLYOLEFINS
Right: Borealis and Topas are teaming up to develop a new material for capacitor film, combining PP and COCs
close the gap between conventional and high- temperature plastics – by allowing the use of polymeric film capacitors at endurance tempera- tures up to 140°C. EPN is targeted to be suitable for use on biaxially oriented polypropylene (BOPP) film-processing machines. “Energy transformation and transmission must become more efficient and affordable. Meeting this challenge is the goal of our co-operation with Topas,” said Anton Wolfsberger, director of strategic polyolefins business projects at Borealis. EPN will be used in electric mobility units,
particularly when higher endurance temperature resistance and consistent frequency control are needed – such as in electric vehicles and high- speed trains. Keisuke Goto, general manager of corporate
strategy at Polyplastics – the main shareholder of Topas – added: “It is exciting to develop a solution that will become a cornerstone for the transition of the energy supply system.”
BOPP barrier Cosmo Films has developed a metallised BOPP film with a high moisture and oxygen barrier. With a thickness range of 15 and 18 microns, the film is suitable for adhesive lamination, which provides a good heat seal strength and allows cold seal adhesive reception on the non-metallic side. The film can also be used as a sandwich layer in multi-layer laminate structures. Packaging made from the film can be used for food and personal care applications that require a high moisture barrier.
It is aimed at applications such as flexible
packaging for lamination, packaging of biscuits, snacks, bakery products, chocolates and personal care products suchas shampoo sachets. “This addition to our range of barrier films
improves the shelf life of the packaged product and helps create mono-material, eco-friendly struc- tures,” said Pankaj Poddar, CEO of Cosmo Films. In addition, Cosmo has modified its BOPP-based
direct thermal printable (DTP) top-coated film. Adding a proprietary coating enables the formation of an image or impression on the film upon contact with the heated print head of a thermal printer. The film is designed for niche applications including information labelling (such as airport baggage tags), inventory tracking and frozen food labelling. The non-tearable, cost effective, and film offers a matte finish. With no need for extra expensive equipment, the film is available in thicknesses of 70, 75 and 95 microns.
22 FILM & SHEET EXTRUSION | April 2022
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.sabic.com �
www.polivouga.pt �
www.huhtamaki.com �
www.novachem.com �
www.reifenhauser.com �
www.hp.com �
www.cadeldeinking.com �
www.karlville.com �
www.dowpackaging.com �
www.profol.com �
www.innoviafilms.com �
www.ti-films.com �
www.mondigroup.com �
www.ami.international �
www.exxonmobilchemical.com �
www.borealisgroup.com �
www.polyplastics.com �
www.cosmofilms.com �
www.uni-konstanz.de
www.filmandsheet.com
Polar research Researchers in Germany have used polar groups to modify the structure of polyethylene – making it more degradable without affecting physical properties. A team at the University of Konstanz has managed to incorporate keto groups – a carbon and an oxygen molecule – into the PE chain. This is by using a catalyst that is “compatible with the carbon monoxide that is used as a reagent for producing keto groups”, said the researchers. A key factor was to limit the number of keto
groups that are introduced, in order to retain physical properties. However, the number of groups is enough to improve degradability: when exposed to simulated sunlight, the material displayed a slow chain degradation, said the researchers. The work was published in the journal Science.
IMAGE: BOREALIS
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