Aseptic packaging includes sterilization of packaging materials, aseptic treatment of food in packaging contents and aseptic treatment of packaging environment.
In terms of market application, the continuous growth of the market share of liquid dairy products and non carbonated beverages will bring about a huge market demand for aseptic packaging; in addition, various volatile liquid products, such as white wine and red wine, will gradually enter the downstream application field of liquid packaging boxes with the further improvement of barrier technology. With the progress of aseptic packaging materials and technology, the expansion of downstream application fields will drive the continuous growth of the demand for aseptic packaging. It is widely used in food and beverage industry.
With the rapid development of China's medicine and food industry, paper packaging provides a broad space for development. At present, white cardboard is widely used in medicine, cosmetics, electronic products, clothing, toys, gifts, tobacco and other products packaging. Micro corrugated paper can be widely used in packaging of electronic products, toys, breakfast food and household appliances, while aseptic paper packaging is popular in food and beverage industries.
Under the trend of environmental protection packaging: aseptic paper packaging takes the "fast lane" of development
The advantages of aseptic paper packaging material are outstanding, and it has a good development prospect in China. China's milk is mainly produced in the north, and the consumption of milk in the south is larger than that in the north, so the normal temperature packaging of milk is particularly important. In 2011, the total output value of China's dairy industry reached 236.1 billion yuan, and the consumption of liquid dairy products reached about 20.9 million tons. According to the prediction of the industry, the consumption of liquid dairy products in China will reach 30 million tons in 2015 at a rate of 10% per year. At present, the commonly used sterilization methods of packaging materials mainly include drug sterilization and ultraviolet sterilization, which can be said to be two sharp tools for food packaging to become aseptic.
1、 The fungicide used in the drug sterilization must be a drug with strong bactericidal ability, no corrosion to the equipment, no harmful substances produced in the sterilization process, and little residue in the packaging materials.
At present, the most commonly used bactericide is hydrogen peroxide, commonly known as hydrogen peroxide. The sterilization ability of hydrogen peroxide is related to its concentration and temperature. The higher the concentration and the higher the temperature, the better the sterilization ability. Hydrogen peroxide commonly used for sterilization ranges from 25% to 30% at temperatures of 60 to 65 ℃. The sterilization with hydrogen peroxide should be combined with heating treatment, because the sterilization effect of hydrogen peroxide is better when the hydrogen peroxide is heated and evaporates from the material surface.
To sterilize packaging containers with hydrogen peroxide is to immerse the packaging container in hydrogen peroxide water or spray hydrogen peroxide directly on the packaging container for sterilization, and then conduct thermal radiation on them, so that the hydrogen peroxide remaining on the packaging container and hot air can completely evaporate and decompose into harmless steam and oxygen.
2、 Generally speaking, the sterilization effect of UV is related to the wavelength, irradiance and irradiation time of UV. The strongest effect is when the wavelength is about 250-360 nm.
The principle of ultraviolet sterilization is that the nucleic acid in the microbial cells after ultraviolet irradiation produces chemical reaction, which causes the metabolic disorder of microorganisms and makes them lose the ability of proliferation. Ultraviolet sterilization is one of the more effective methods for aseptic packaging or clean packaging. It has the advantages of no residual chemicals, high safety, simple use and low cost. But compared with hydrogen peroxide, its germicidal efficacy is not very good, so it should be used in combination with other sterilization methods.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
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