Borouge, has entered a new market for its multimodal PP for blown film. Based on Borealis Borstar® technology which allows application-specific tailoring of material properties, Borouge has supplied multimodal Borclear™ polypropylene (PP) and Steripeel™ PP to provide the performance layers in the innovative M-Vent microwaveable pouch produced by TPN FlexPak.

The M-Vent Pouch is a new concept with an innovative sealing feature that allows it to 'breathe out' while its contents cook in a microwave oven. This novel self-venting attribute provides for the safe and reliable release of steam from inside the pouch without requiring partial opening or puncturing before placing in the microwave.

The primary challenges were that the food contact material offered excellent organoleptic properties, preserving food flavour and odour, and that it provided outstanding seal and peel characteristics to enable the self-venting process and giving easy opening.