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Borealis unveils new PP grade for closures

Chemical and plastics solutions provider in Austria, Borealis has launched new polypropylene (PP) grade BorPure RF490MO for transparent and non-opaque colored closures. The grade offers a stiffness/impact balance with transparency and optical appeal as a new star in the BorPure family.

The launch of the new random copolymer PP will enable the company to offer packaging converters a saving in cycle time of up to 10%and an energy reduction of up to 5% in the creation of lightweight hinge closures with better optics.

BorPure RF490MO’s benefits derive from the 20-30% higher stiffness levels and dimensional color stability achieved with Borealis Nucleation Technology (BNT).

The grade’s fluidity simplifies processing for a smoother production cycle and enables converters to use 20% lower barrel temperatures than in standard conditions, which allows them to use up to 5% less energy, creating cost and carbon footprint savings.

BorPure RF490MO shows good dimensional stability at color masterbatch changes due to its nucleation technology (BNT). Its enhanced rigidity / impact balance creates better hinge performance over time adding to the improved visuals of the closure.

The grade preserves desired product taste and appearance, is approved for use in food contact applications and its stiffness potentially allows downgauging by 10% without losing overall mechanical properties of the final product at reduced wall thickness.

Borealis Business Unit Moulding vice president Rainer Höfling commenting on the new grade said: "The launch of BorPure™ RF490MO offers closure converters new opportunities to realise the visual and performance requirements of their customers, their own need for improved manufacturing efficiency and the possibility to reduce their environmental impact in one solution."