1、The main role is to remove oxygen.
In fact, the principle of vacuum packaging preservation is not complicated, one of the most important link is to remove the oxygen within the packaging products. The oxygen within the bag and food is extracted, and then sealed packaging to avoid the entry of air, there will be no oxidation, so as to achieve the effect of preservation.
The use of vacuum packaging machine to help prevent food spoilage, its principle is because food mold spoilage is mainly caused by the activities of microorganisms, and most of the microorganisms need oxygen to survive, the oxygen in the bag to pump out, so that microorganisms lose the living environment.
But vacuum packaging can not inhibit the reproduction of anaerobic bacteria and enzymatic reactions caused by food spoilage and discoloration, so it also needs to be combined with other preservation methods, such as refrigeration, flash-freezing, dehydration, high-temperature sterilization, irradiation sterilization, microwave sterilization, salt pickling, etc..
2、 to prevent food oxidation.
Because of the large number of unsaturated fatty acids in oil and grease food, will be subject to the action of oxygen and oxidation, so that the food tastes bad, spoiled.
In addition, oxidation will also make vitamin A and vitamin C loss, food coloring in the role of unstable substances by the action of oxygen, will make the food color darkening. Therefore, oxygen removal can effectively prevent food deterioration, and maintain its color, flavor, taste and nutritional value.
3、 the link of inflatable.
The main role of vacuum inflatable packaging in addition to oxygen preservation function, there are mainly anti-pressure, gas barrier, freshness, etc., can more effectively maintain the original color, aroma, taste, shape and nutritional value of the food for a long time.
In addition, there are many foods should not use vacuum packaging, but must be used vacuum inflatable packaging. Such as crisp and fragile food, easy to lump food, easy to deform the oil food, sharp edges or high hardness will pierce the bag of food.
Food by the food vacuum packaging machine vacuum inflatable packaging, inflatable pressure inside the bag is greater than the atmospheric pressure outside the bag, can effectively prevent the food pressure broken deformation, and does not affect the appearance of the bag and printing and decoration.
Vacuum inflatable packaging in the vacuum and then filled with nitrogen, carbon dioxide, oxygen, a single gas or a mixture of 2-3 gases. Among them, nitrogen is an inert gas, play a filling role, so that the bag to maintain positive pressure, in order to prevent the air outside the bag into the bag, the food to play a protective role.
Carbon oxide gas can be dissolved in various types of fat or water, forming a weak acidic carbonic acid, has the activity of inhibiting microorganisms such as mold, spoilage bacteria. Oxygen has the ability to inhibit the growth and reproduction of anaerobic bacteria, keep the freshness and color of fruits and vegetables, and high concentration of oxygen can make fresh meat keep its bright red color.
Dingli Packaging is a modern company specializing in the production of plastic laminated color printing flexible packaging.
Our products are positioned to provide high quality and grade flexible packaging products for fisheries, agriculture, food, cosmetics, beverage, daily life and other industries.
At present, our main products are food packaging bags, high-temperature steaming aluminum foil bags, high-temperature steaming bags, pet food packaging bags, vacuum bags, rolled films, and general-purpose packaging bags.
We can provide a variety of packaging forms: 8 side seal bags, 3side seal bags, back seal bags, side gusset bags, roll film, zipper bags, stand-up bags and stand-up zipper bags and stand-up bags with spout, shaped bags, shaped stand-up bags, shaped bags with window , etc.
Our company service concept is "customer first!"
Our corporate mission is "let your brand to the world because of packaging"
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Post time: Apr-19-2022