Sterilization and filling of the hottest HDPE beve

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Sterilization and filling of HDPE beverage bottles

at present, the production mode of HDPE plastic bottle milk drinks in the market is mainly secondary sterilization. That is, after ultra-high temperature sterilization treatment and filling and sealing process, the milk beverage is subject to 15 minute heat preservation sterilization treatment at a temperature above 85 ℃

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, which basically belongs to the eliminated production method. 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 ℃ according to relevant information and actual use, 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, it is required that the weight of PET bottle is relatively high, and there must be reinforcing ribs in the shape design, so as to prevent the shape of the bottle from changing its strength after high-temperature filling

aseptic cold filling technology is an advanced filling production method rising abroad in recent years. When intelligent machines are used to operate aseptic cold filling technology for production, milk drinks are quickly cooled to 25 ℃ after ultra-high temperature sterilization, and filled into sterilized PET bottles in a sterile environment

aseptic cold filling technology is adopted, which is mainly determined by the fundamentals of supply and demand. The gram weight of the bottle can be much lower than that of hot filling, 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

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