The difference between vacuuming and vacuum in food packaging bag
Food packaging bag vacuuming is vacuum packaging. After the food packaging is placed in the vacuum machine to extract air, the package of a food packaging technology, will be in the food packaging before or after the sterilization operation, there is no difference in essence.
Vacuum packaging and decompression packaging, the air in the packaging container is completely extracted and sealed, and the bag is kept in a state of high decompression. The lack of air is equivalent to the effect of low oxygen, so that there is no living condition for microorganisms, so as to achieve the purpose of fresh fruit and no disease and rot. At present, vacuum packaging in plastic bags, aluminum foil packaging, glassware, plastic self material and composite material packaging are used.
Vacuum packaging can improve the value and quality of products by protecting products from environmental pollution and prolonging the shelf life of food. Vacuum packaging technology originated in 1940s. Since the polyester and polyethylene plastic films were successfully used in commodity packaging in 1950, the vacuum packaging machine has developed rapidly.
In the field of people's life and work, all kinds of plastic vacuum packaging are everywhere. Light, sealed, fresh-keeping, anti-corrosion, anti rust plastic vacuum packaging is widely used in many fields, from food to medicine, knitwear, from precision product manufacturing to metal processing plants and laboratories. The application of plastic vacuum packaging is more and more extensive, which promotes the development of plastic vacuum packaging machine and puts forward higher requirements.
Packaging materials can be selected according to the type of goods. Fruit is a kind of fresh food, which is still breathing. High oxygen deficiency will cause physiological diseases. Therefore, less fruits are packed in vacuum