Aseptic packaging

An aseptic package has been sterilised prior to filling with UHT (Ultra High Temperature) treated food, resulting in a product which is shelf stable for over 6 months.

Our method passes flat, unformed packaging material through a heated hydrogen peroxide bath. A hydrogen peroxide concentration of 30% is heated at 70°C for six seconds. Hydrogen peroxide is then eliminated from the packaging material using pressure rollers or hot air.

The environment where food is handled and sealed must also be free of potentially contaminating bacteria. That means filling and sealing machinery must be sterile before packaging and during the production process. This can be achieved using hot air and steam or by combining heat treatment with hydrogen peroxide chemical sterilisation.