Vacuum packaging is to take out the air in the packaging bag and seal the materials to achieve the purpose of preserving freshness and long-term preservation of the packaged objects, which is convenient for transportation and storage. Vacuum packaging equipment is a machine that after putting the product into the packaging container, sucking out the air inside the container, reaching a predetermined vacuum degree (usually around 2000~2500Pa) and completing the sealing. It can also be filled with nitrogen or other mixed gases, and then complete the sealing process.
Since the 1940s, vacuum packaging technology has appeared and been applied. Until the mid-to-late 50 years, the vacuum packaging field gradually began to use polyethylene and other plastic films for packaging. In the early 1980s, with the rapid development of the retail industry and the gradual promotion of small packaging, the technology was applied and developed. Vacuum packaging is suitable for various plastic composite film bags or aluminum foil composite film bags, such as polyester/polyethylene, nylon/polyethylene, polypropylene/polyethylene, polyester/aluminum foil/polyethylene, nylon/aluminum foil/polyethylene, etc. Material. With the continuous improvement of people’s ideological awareness, the application of vacuum packaging machinery has attracted more and more attention from industries such as food, textiles, and electronics.
Principle and classification of vacuum packaging equipment
The structure of vacuum packaging equipment is different, and the classification method is also different. Usually according to different packaging methods, it can be divided into mechanical extrusion type, intubation type, chamber type, etc.; according to the way the packaged items enter the chamber, it can be divided into single chamber, double chamber, thermoforming type, conveyor belt type, and rotary vacuum chamber. According to the type of movement, it can be divided into intermittent and continuous; according to the relationship between the packaged product and the packaging container, it can be divided into vacuum skin packaging and vacuum inflatable packaging.
With the continuous development of science and technology and the continuous improvement of people’s living standards, the application of vacuum packaging technology will become more and more extensive, and the variety, style, performance, and quality of vacuum packaging equipment will change and improve. In the textile and handicraft industry, vacuum packaging can effectively reduce the volume of products and facilitate packaging and transportation; in the food industry, vacuum packaging and sterilization technology can effectively inhibit bacterial growth, slow down the spoilage of food, and increase the shelf life of food; in electronics, In the hardware industry, vacuum-packed hardware accessories can isolate oxygen, so that the accessories will not oxidize and rust.
Post time: Dec-28-2021