Borealis BorPure RG466MO and RJ377MO copolymers

Borealis has released two new-generation BorPure materials for transparent food containers that offer a step change in organoleptics, a 10% reduction in cycle times and energy, and a CO₂ reduction of up to 4 tonnes per year for the converter.

BorPure RG466MO and BorPure RJ377MO are high-transparency polypropylene random copolymers targeted primarily at the different market segments of house- and kitchenware (RG466MO) and thin wall packaging (RJ377MO). Based on Borealis Nucleation Technology, the high-melt flow rate and high-purity materials meet market preferences towards no tainting of taste and odour of food.

BorPure RG466MO delivers a change in taste and odour performance. It also offers a combination of good stiffness/impact balance, low warpage, good anti-static behaviour and ease of moulding for complex shapes, which together make it a suitable solution for food storage containers used in the kitchen and around the house.

BorPure RJ377MO combines its organoleptic properties with high transparency, drop impact, top load and de-nesting performance. This allows manufacturers to create thin wall containers and lids that can be stacked easily inside and on top of one another without cracking. Typical applications benefiting from such performance include packaging for salads, sauces, dairy and convenience meals, transparent packaging for houseware as well as caps and closures.

Both grades’ high crystallisation speeds and ease of moulding and de-moulding allow for fast production and short cycles, therefore creating the potential for high output in the injection moulding process. For example, when tested on a 2-cavity-cup-mould, the high throughput achieved with BorPure RG466MO resulted in more than 450 cups/h (850 mL cup - 0.37 mm thickness).

Packaging converters can take advantage of a reduction in cooling time due to faster crystallisation thus reducing the energy by 10%. This creates up to 5% lower CO₂ emissions during production, generating both cost savings and environmental benefits.