Masterbatch controls fogging in BOPP and CPP films

21-Nov-06

Ampacet has introduced an antifog masterbatch which controls the formation of water droplets in packaging films made of oriented polypropylene (BOPP) and cast polypropylene (CPP). The new antifog, HYDROCLEAR 2, offers immediate and long-lasting control of droplet formation in packaging for pre-cut salads and other fresh produce, as well as in hot food packaged before it cools down, such as fresh bread and meat cooked in a store. In reducing water droplet formation, HYDROCLEAR 2 antifog agent preserves film clarity and thus package shelf appeal. It also reduces the contact between water droplets and food to help avoid early spoilage. This masterbatch meets food contact regulations in both U.S. and Europe. Cold fog testing on a 30µm multilayer extruded film containing 5% HYDROCLEAR 2 found that the antifog agent prevents droplet formation within 15 minutes after a package is placed in a refrigerator at 4°C. The tests also showed that the package remained clear of droplets for at least four weeks, even if the film it is made of is three months old. Additional tests show that the antifog agent also has good hot-fog properties, preventing droplet formation in fresh-food packages containing hot food as the contents come to room temperature. (Press release)