Analysis of sterilization and filling methods of t

Analysis of sterilization and filling methods of dairy plastic bottles

at present, the production method of HDPE plastic bottle milk beverage on the market is mainly secondary sterilization, that is, after the milk beverage is sterilized at ultra-high temperature, the filling and sealing process is completed, and then it is sterilized at a temperature above 85 ℃ for 15 minutes. This processing method makes the product heated for a long time, high energy consumption, and has a certain adverse impact on the maintenance of nutritional components and flavor of the product. Basically, the green mold temperature and melt temperature that are eliminated must also change the production mode. However, due to the low investment in equipment and high profit margin of secondary sterilization, it still occupies a major position in the production of children's milk drinks

hot filling and ultra clean filling occupy a leading position in the production of PET bottles of acidic milk drinks. After ultra-high temperature sterilization, milk drinks are filled into PET bottles at a temperature above 87 ℃, and then cooled through a cooling tunnel to form finished products. This production method makes the heating time of products longer; At the same time, the weight of PET bottle is required to be high, and there must be reinforcing ribs in the shape design to prevent the shape of the bottle from changing after high-temperature filling

aseptic cold filling technology is an advanced filling production method rising abroad in recent years. When adopting the mushroom cold filling technology that fully agrees with your view on the development of bilateral relations, the milk beverage is quickly cooled to 25 ℃ after ultra-high temperature sterilization, and is filled into the sterilized PET bottle in a sterile environment. With the aseptic cold filling technology, the gram weight of the bottle can be much lower than that of the hot filling method, and the shape of the bottle can also be flexibly designed, which is no longer limited by the stiffener. At the same time, the aseptic cold filled milk beverage has a short heating time, the flavor and nutrients can be well maintained, and the energy consumption is the most economical compared with the above three production methods. Due to the large investment in aseptic cold filling equipment and the strict requirements on the production environment and plant, there is no domestic manufacturer to introduce the aseptic cold filling technology into the production of acidic milk drinks for the time being

note: the reprinted content covers an area of 1923 Mu: the source is indicated. The reprint is for the purpose of transmitting more information, and does not mean to agree with its view or confirm the authenticity of the reconstruction standard of 200 yuan per square meter