Aseptic packaging systems have fundamentally changed the handling of sensitive liquid foods. Distribution and storage no longer require refrigeration, with the result that the shelf life of the package contents is considerably extended. The need for aseptic packaging is rapidly increasing and the system has proved to be invaluable in the distribution of milk and other products. Today, two thirds of Tetra Pak packages are aseptic. Aseptic packaging systems have played a vital role in providing people all over the world with essential nourishment. Aseptic packaging can be defined as the filling of a commercially sterile product into a sterile container under aseptic conditions and hermetically sealing the containers so that reinfection is prevented. This results in a product, which is shelf-stable at ambient conditions. The term â€œasepticâ€ is derived from the Greek word septicos which means the absence of putrefactive micro-organisms. Aseptic paper comprises of liquid paper board (type of paper) and four or five layers of low-density polyethylene and one thin layer of aluminum foil. The structure of aseptic paper is made by extrusion and laminating machines that combine the paper with the other layers of plastic and aluminium foil. Generally, liquid paper board represents 75% of the total weight of the package. Aluminium foil accounts for 5% of the total weight and polyethylene layer accounts for 20% of the total weight. In practice, generally there are two specific fields of application of Aseptic packaging technology: Packaging of pre-sterilized and sterile products. Examples are milk and dairy products, puddings, desserts, fruit and vegetable juices, soups, sauces, and products with particulates. The second is packaging of non-sterile product to avoid infection by micro-organisms. Examples of this application include fermented dairy products like yoghurt. The demand for aseptic liquid foods is growing, especially in Asia and in Eastern Europe and South America. The fastest growth rate in the emerging markets is particularly China. Aseptic packaging technology will be oriented to high-tech integration, high reliability and high speed and extend its applications to a diversity of industrial sectors. On the other hand, as an important approach to achieve technology advancement in the beverage industry, aseptic cold filling technology will see a rapid growth. The demand is increasing for new aseptic fillers of bottles, paper, and plastic for added value dairy products, both ambient and chilled. Lower total costs of operation and increased system flexibility are the main benefits of aseptic packaging to filling companies. The most rapidly growing application is for plastic pouches and continued growth of around 15% per year is forecast upto 2013 for plastic pouches. Much of this growth will be in China, although there will be an increased use of the pack type in other developing markets. The average annual growth rate (AAGR) for aseptic packaging in the coming year 2013 in packs will be around 5.9% per annum. The leading producers of aseptic paper are Tetrapak, followed by SIG Combibloc and Elopak. The market structure is highly concentrated with the above three organizations (Tetrapak, Combibloc and Elopak). These three units account for almost all liquid carton packaging board demand in the European Economic Association (EEA). Thus aseptic packaging is very well accepted in food service applications worldwide as a safe and high-quality packaging option.