Aseptic filling technology: Tetra Pak packaging machines use ultra-high temperature sterilization (UHT) technology to heat milk to 134°C to 137°C and maintain it for 4 seconds to kill all harmful bacteria and microorganisms. This sterilization method ensures that milk can be stored at room temperature for a long time without refrigeration.
Sterility of packaging materials: Tetra Pak packaging materials undergo strict disinfection treatment during the production process, typically using hydrogen peroxide or electron beam sterilization technology. Hydrogen peroxide sterilization kills bacteria by soaking the packaging materials, while electron beam sterilization destroys the DNA of microorganisms with electron beams to achieve sterilization.
Aseptic filling process: During the filling process, Tetra Pak packaging machines use aseptic air systems and hydrogen peroxide disinfection to ensure that milk does not come into contact with any bacteria during filling. The aseptic environment inside the packaging machine is maintained through precise temperature and pressure control.
The multi-layer structure of packaging materials: Tetra Pak packaging is composed of multiple layers of materials such as paper, aluminum foil and plastic. This structure can effectively block light, oxygen and external contamination, thereby extending the shelf life of milk.
Automation and cleaning of equipment: Tetra Pak packaging machines are equipped with integrated cleaning devices that can automatically clean and disinfect the equipment at preset time intervals. This automated design helps maintain the cleanliness and sterility of the equipment.
Through these strict aseptic measures, Tetra Pak packaging can ensure that milk is not contaminated during the packaging process, thereby providing consumers with safe and healthy products.
