We manufacture soups and hot-fill our product into plastic cups (Polypropylene with Oxygen Transmission rate 3.4cc/cup/24hr/atm @77F). The water vapor transfer rate is .007g/24hr @100+RH 98%.
The hot fill procedure helps sterilize the cups and improves shelf life of the product.
Can we use Nitrogen Flush (modified atmospheric packaging )in addition to hot fill process to increase our shelf life? Can these two methods be used together?