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Development trend of vacuum packaging and sealing machine
Vacuum packaging technology originated in the 1940s. Since 1950, polyester and polyethylene plastic films have been successfully applied to commodity packaging, and vacuum packaging machines have developed rapidly. Its technical development trend is mainly reflected in five aspects: high productivity, automation, multi-function of single machine, production line composition and adoption of related new technologies.

1, high productivity. The capacity of vacuum packaging machine has developed from several pieces per minute to 10 pieces, and the capacity of thermoforming-filling-sealing machine can reach more than 500 pieces per minute.

2. Automation. For example, Zhengzhou Spark 500 double-chamber vacuum packaging machine integrates vacuumizing, sealing, printing and cooling, and is mainly used for packaging tea, peanuts, shrimps, corn and other foods.

3, single machine multi-function. Multi-function can be realized on one machine, and it is easy to expand the scope of use. In order to realize multi-function of single machine, modular design must be adopted. Through the transformation and combination of functional modules, it will become different types of vacuum packaging machines suitable for different packaging materials, packaging items and packaging requirements. The representative product is the spindle wheel multi-station bag-making vacuum packaging machine produced by HESSER factory under BOSCH company in Germany. Its functions of bag-making, weighing, filling, vacuumizing and sealing can be completed on a single machine.

4. Form a production line. When more and more functions are needed, concentrating all functions on one machine will make the structure very complicated and inconvenient to operate and maintain. At this time, several machines with different functions and matching efficiency can be combined into a more complete production line.

5. Adopt relevant new technologies. In the packaging method, inflatable packaging is widely used instead of vacuum packaging, closely combining the research of inflatable components, packaging materials and inflatable packaging machines; In the control technology, more computer technology and microelectronics technology are applied; The application of heat pipe and cold sealing technology in sealing can also directly install advanced devices on vacuum packaging machines, such as installing computer-controlled high-precision combination scales for coarse materials; Application in rotary or vacuum packaging machine, advanced and high-speed arc cam indexing machinery.