Vacuum packaging machine and vacuum sealing of living goods are widely used
Hits£º560 Date£º2021/4/2
The vacuum packing seal of the article can be packed by the relevant vacuum packaging machine as the equipment on the vacuum product. The vacuum packaging machine can automatically extract the air in the bag, and finish the sealing process after reaching the predetermined vacuum. Vacuum packaging technology originated in the 1940s. In 1950, polyester and polyethylene plastic films were successfully used in vacuum packaging, and since then, vacuum packaging has been developed rapidly. Vacuum packaging machine is often used in food industry, because after vacuum packaging, food can be antioxidant, thus achieving the purpose of long-term preservation. Vacuum equipment has good sealing and storage, beautiful appearance, convenient operation and maintenance of vacuum equipment, safety and energy saving, low investment cost of equipment foundation engineering. It is widely used in food packaging, such as meat, cereals processing food and food which is easy to be oxidized and deteriorated. It can also be used for packing loose products such as mechanical parts, instruments, down products, wool products, etc., so that the goods can achieve good packaging effect.
One of the important parts of vacuum packaging is deoxidation, which is beneficial to prevent food deterioration. Its principle is also relatively simple. Because of the food mildew decay and deterioration mainly caused by the activities of microorganisms, most microorganisms (such as mold and yeast) need oxygen for survival, while vacuum packaging is needed It is to use this principle to pump out oxygen from the packaging bag and food cells, so that the microorganism will lose the "living environment". The experiment shows that when the oxygen concentration in the bag is less than 1%, the growth and propagation speed of the microorganism will decrease sharply, and the oxygen concentration is less than 0.5%, and most of the microorganisms will be stopped from propagation. (Note: vacuum packaging can not prevent food deterioration and discoloration caused by the reproduction of anaerobic bacteria and enzyme reaction, so it also needs to be combined with other auxiliary methods, such as refrigeration, quick freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salt curing, etc.
One of the variations of vacuum packaging is inflatable packaging. The main function of inflatable packaging is not only the function of deoxidation and quality, but also the functions of pressure resistance, gas resistance and fresh keeping, which can make the food keep its original color, fragrance, taste, shape and nutritional value for a long time. In addition, many foods should not be vacuum packed, but inflatable packaging. Such as crisp and fragile food, easy to agglomerate food, easy to deformation oil food, with sharp corners or high hardness will break the packaging bag food. After the food is packed by the vacuum packaging machine, some gases are filled in, which makes the air pressure inside the package greater than the atmospheric pressure outside the package, which can effectively prevent the food from crushing and deformation under pressure, and does not affect the appearance of the packaging bag and printing decoration.
With the continuous improvement of food hygiene and the requirement of quality of life, vacuum packaging has played an indispensable role in the life of contemporary people. It is a typical field of vertical extension of packaging technology, which plays an irreplaceable role.
One of the important parts of vacuum packaging is deoxidation, which is beneficial to prevent food deterioration. Its principle is also relatively simple. Because of the food mildew decay and deterioration mainly caused by the activities of microorganisms, most microorganisms (such as mold and yeast) need oxygen for survival, while vacuum packaging is needed It is to use this principle to pump out oxygen from the packaging bag and food cells, so that the microorganism will lose the "living environment". The experiment shows that when the oxygen concentration in the bag is less than 1%, the growth and propagation speed of the microorganism will decrease sharply, and the oxygen concentration is less than 0.5%, and most of the microorganisms will be stopped from propagation. (Note: vacuum packaging can not prevent food deterioration and discoloration caused by the reproduction of anaerobic bacteria and enzyme reaction, so it also needs to be combined with other auxiliary methods, such as refrigeration, quick freezing, dehydration, high temperature sterilization, irradiation sterilization, microwave sterilization, salt curing, etc.
One of the variations of vacuum packaging is inflatable packaging. The main function of inflatable packaging is not only the function of deoxidation and quality, but also the functions of pressure resistance, gas resistance and fresh keeping, which can make the food keep its original color, fragrance, taste, shape and nutritional value for a long time. In addition, many foods should not be vacuum packed, but inflatable packaging. Such as crisp and fragile food, easy to agglomerate food, easy to deformation oil food, with sharp corners or high hardness will break the packaging bag food. After the food is packed by the vacuum packaging machine, some gases are filled in, which makes the air pressure inside the package greater than the atmospheric pressure outside the package, which can effectively prevent the food from crushing and deformation under pressure, and does not affect the appearance of the packaging bag and printing decoration.
With the continuous improvement of food hygiene and the requirement of quality of life, vacuum packaging has played an indispensable role in the life of contemporary people. It is a typical field of vertical extension of packaging technology, which plays an irreplaceable role.
