Vacuum packaging is a packaging that protects products from environmental pollution and prolongs the shelf life of food, which can improve the value and quality of products.
Vacuum packaging technology originated in the 1940s. Since the successful application of polyester and polyethylene plastic films to commodity packaging in 1950, vacuum packaging machines have developed rapidly. Suihua vacuum packaging machine is suitable for the vacuum packaging of food such as poultry and livestock meat, aquatic products, native products, fruit and vegetable deep-processing products soup, etc. It can prevent moisture, oxidation, mildew, and effectively extend the shelf life. This machine is also suitable for the packaging of pharmaceuticals and chemical raw materials, electronic products, metal processing parts and other items.
In the field of people’s life and work, all kinds of plastic vacuum packaging abound. Lightweight, sealed, fresh-keeping, anti-corrosion and anti-rust plastic vacuum packaging covers many fields from food to medicine, knitwear, from precision product manufacturing to metal processing plants and laboratories. The increasing application of plastic vacuum packaging has promoted the development of plastic vacuum packaging machines and put forward higher requirements for them.
The mechanism of vacuum packaging: its purpose is to reduce the oxygen content in the package, prevent the mold and rot of the packaged food, maintain the color and fragrance of the food, and extend the shelf life.
The main function of vacuum packaging is to remove oxygen to help prevent food from spoiling. The principle is also relatively simple. Because food mildew and spoilage are mainly caused by the activities of microorganisms, most microorganisms (such as molds and yeasts) need oxygen to survive. Yes, and vacuum packaging uses this principle to extract the oxygen in the packaging bag and food cells, so that the microscopic objects lose the “survival environment”. Experiments have proved that when the oxygen concentration in the packaging bag is less than or equal to 1%, the growth and reproduction speed of microorganisms will drop sharply. When the oxygen concentration is less than or equal to 0.5%, most microorganisms will be inhibited and stop reproducing.
