Since the birth of PET bottled beverage medium temperature filling technology in China, the filling production line using this technology has matured in a few years and has formed a certain market scale. The technology is based on the temperature limit of ordinary PET bottles. Through the matching filling production line, filling environment and subsequent processes, the product preservation is achieved without adding any preservatives. Through production practice, it has been shown that the beverages produced by non-heat-resistant PET bottles have reached the sanitary technical indicators of heat-resistant PET bottled beverages and the relevant national standards. The shelf life of the products has reached more than one year. The technology relies on rational filling system design, perfect packaging disinfection system and air purification system, comprehensive and thoughtful SIP system and CIP system as well as perfect production quality control management.

With the rapid development of China's beverage industry, the medium-temperature filling production line of PET bottled beverages has become an inevitable development. Achieving high-speed filling of PET bottled beverages in medium-temperature filling production lines is not a simple device amplification. Compared with the previous medium and low speed production lines, it is necessary to innovate and break through the empty bottle sterilization before filling and the inverted bottle sterilization process and equipment after filling. After several years of unremitting research and exploration, Jiangsu Xinmeixing has made a breakthrough leap in achieving high-speed PET bottled beverage medium-temperature filling production line, and the whole line equipment level is close to the current world advanced level.

1. The empty bottle sterilization of the medium and low speed production line adopts the conservative disinfection liquid infusion, maintenance and dumping mode. This mode has many equipment links and large area, which is not suitable for the high speed of the production line. It is necessary to optimize the sterilization process of the empty bottle and simplify the sterilization equipment to meet the requirements of high speed of the production line. To this end, Jiangsu Xinmeixing has cooperated with internationally renowned disinfectant production companies to replace the disinfectant used in the early days with safer and more efficient disinfectant, which has changed the sterilization process of the original packaging materials (bottles and caps). That is, the original disinfectant is filled, maintained, and dumped into a disinfectant spray method. The empty bottle is sterilized by inserting the nozzle into the bottle mouth to move the spray disinfectant, and equipped with a high-efficiency spray nozzle imported from the United States. The sterilization is thorough and safe. At the same time, the consumption of the disinfectant of the equipment is greatly reduced, which is only 1/3 of the original process consumption, and has the advantage of greatly saving operating costs. This technology simplifies the packaging material sterilization equipment, reduces the equipment footprint, and most importantly, is more suitable for high-speed medium temperature filling production lines. In addition, the sterilization of the bottle is carried out in a closed environment, the microorganisms are easy to control, the operating environment is fully improved, and the centralized recovery and treatment of the exhaust gas is facilitated, which is environmentally friendly and can protect the operator from the disinfection solution to the greatest extent.

2. The bottle sterilizing of the medium and low speed production line adopts the conveyor belt method with long pouring time. This method covers a large area and needs to be supplemented with artificial righting bottle, which is not suitable for the automation and high speed of the production line. In order to meet the requirements of high-speed production line, Xinmeixing Company borrowed and adopted the inverted bottle sterilization chain mode of high-temperature filling production line. At the same time, in order to meet the sterilization time requirement of the bottle cap, the spray cooling machine was designed as a spray sterilization machine to make up Insufficient sterilization time for the inverted bottle allows the product to be fully sterilized prior to cooling.

In addition, the key equipment of the entire production line (empty bottle sterilizing, rinsing, filling and capping five-in-one machine) has the following characteristics:

Adopting the direct feeding technology of the air feeding channel and the bottle feeding wheel, the bottle feeding wheel adopts the innovative design of the bottle mouth clamping mechanism with the bottle dividing function, which saves the bottle screw and the conveyor chain, and does not need to be replaced when the bottle type is replaced. Adjust any part.