1. The main function is to remove oxygen.
In fact, the fresh-keeping principle of vacuum packaging is not complicated. One of the most important links is to remove the oxygen in the packaged products. Just take out the oxygen in the packaging bag and food, and then seal the packaging to avoid air entry, so there will be no oxidation reaction, so as to achieve the fresh-keeping effect.
The use and use of vacuum packaging machine is conducive to preventing food deterioration. Its principle shows that the moldy deterioration of food is mainly caused by the activities of microorganisms, and most microorganisms need oxygen to survive. Vacuum packaging is based on this principle,
The oxygen in the packaging bag is pumped out to make the microorganism lose its living environment Vacuum packaging can not inhibit the propagation of anaerobic bacteria and the deterioration and discoloration of food caused by enzyme reaction, so it also needs to be combined with other auxiliary methods, such as cold storage, quick freezing, dehydration, high-temperature sterilization, irradiation sterilization, microwave sterilization, salting, etc.
2. Prevent food oxidation.
Because there are a lot of unsaturated fatty acids in fat foods, they are oxidized by oxygen, which makes the food taste and deteriorate. In addition, oxidation also causes the loss of vitamin A and vitamin C, and the unstable substances in food pigments are affected by oxygen to darken the color. Therefore, deoxidization can effectively prevent food deterioration and maintain its color, aroma, taste and nutritional value.
3. Inflation link.
The main function of vacuum inflatable packaging is not only the oxygen removal and quality assurance function of vacuum packaging, but also the functions of compression resistance, gas resistance and preservation, which can more effectively keep the original color, aroma, taste, shape and nutritional value of food for a long time. In addition, vacuum packaging is not suitable for many foods, but vacuum inflatable packaging must be used. Such as crunchy and fragile food, easily caked food, easily deformed and oily food, food with sharp edges and corners or high hardness that will puncture the packaging bag, etc.
After the food is vacuum inflated and packaged by the food vacuum packaging machine, the inflation pressure in the packaging bag is greater than the atmospheric pressure outside the packaging bag, which can effectively prevent the food from being crushed and deformed under pressure and does not affect the appearance of the packaging bag and the printing decoration.
Vacuum inflatable packaging is filled with nitrogen, carbon dioxide, oxygen single gas or mixed gas of 2-3 gases after vacuum. Nitrogen is an inert gas, which plays a filling role to keep the positive pressure in the bag, so as to prevent the air outside the bag from entering the bag and protect the food.
Oxidized carbon gas can be dissolved in various fats or water to form carbonic acid with weak acidity, and has the activity of inhibiting molds, spoilage bacteria and other microorganisms. Oxygen can inhibit the growth and reproduction of anaerobic bacteria and keep fruits and vegetables fresh and colorful. High concentration of oxygen can keep fresh meat bright red.
Qingdao Advanmatch packaging is a modern private enterprise specializing in the production of plastic composite color printing flexible packaging. Our product positioning is to provide high-quality high-end flexible packaging products for animal husbandry, agriculture, food, dairy, daily chemical, industrial and other industries. At present, the main products include quick-frozen food packaging bags, high-temperature cooking aluminum foil bags, high-temperature cooking bags, high-end pesticide packaging bags, vacuum bags, coiled materials, and general packaging bags.
We can provide a variety of packaging forms: octagonal sealed bag, trilateral sealed bag, middle sealed bag, quad seal pouch/bag, plastic film roll stock/roll film stock, zipper bag, stand up pouch/bag and spout pouches, special-shaped bag, special-shaped stand up bag, special-shaped bag with window etc.
Our company always adheres to the service concept of customer first, always adheres to the corporate mission of “LOWER YOUR OPERATING COSTS, INCREASINE YOUR PRODUCTIVITY AND POSITIVELY IMPACT YOUR BOTTOM LINE”, and always grasps the spirit of “innovation creates value”. We wish you to go hand in hand to create brilliance!
Post time: Aug-30-2022