Vacuum packaging is to seal the materials after the air in the packaging bag is extracted, so as to achieve the purpose of keeping fresh and long-term preservation of the packaged objects, and is convenient for transportation and storage. Vacuum packaging equipment is a machine that removes the air inside the container after the product is put into the packaging container, reaches a predetermined vacuum degree (usually about 2000~2500Pa) and completes the sealing. It can also be filled with nitrogen or other mixed gas, and then complete the sealing process.
Vacuum packaging technology has been around since the 1940s. Until the middle and late 50s, 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 all kinds of 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 food, textile, electronics and other industries.
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 process can effectively inhibit bacterial reproduction, slow down the spoilage of food, and increase the shelf life of food; In the hardware industry, vacuum-packed hardware accessories can isolate oxygen, so that the accessories do not oxidize and rust.
The structure of vacuum packaging equipment is different, and the classification method is also different. Usually, it can be divided into mechanical extrusion type, intubation type, chamber type, etc. according to different packaging methods; according to the way the packaged items enter the chamber, it can be divided into single-chamber, double-chamber, thermoforming, conveyor belt, rotary vacuum chamber According to the movement mode, it can be divided into intermittent type and continuous type; according to the relationship between the packaged product and the packaging container, it can be divided into vacuum body packaging and vacuum inflatable packaging.
Post time: Dec-05-2022
