What is vacuum packing machine?
Vacuum packing machine can automatically extract the air inside the bag to achieve a
predetermined degree of vacuum to complete the sealing process. It can also be filled with nitrogen or other mixed gases to complete the sealing process.
Working principle of vacuum packing machine
Vacuum packaging machine is composed of a vacuum system, pumping and sealing system, hot pressure sealing system, electrical control system, and so on. External vacuum packaging machine is the bag into a low vacuum, immediately after the automatic sealing. For some soft food, automatic vacuum packaging machine packaging can reduce the packaging volume, easy to transport and store. The principle of tabletop vacuum packaging machines is to plastic composite film or plastic aluminum foil composite film as packaging materials, solid, liquid, powder, paste-like food, chemicals, electronic components, precision instruments, rare metals, etc. for vacuum packaging or vacuum pumping packaging.
Function of vacuum packing machine
The main role of vacuum packaging is to remove oxygen and to help prevent food spoilage. The principle is relatively simple because food mold deterioration is caused mainly by microbial activities, and most of the microorganisms (such as molds and yeasts) survive the need for oxygen. Vacuum packaging is the use of this principle, the bag and food cells within the oxygen are pumped off so that microorganisms lose the survival of the environment.
Experimental evidence proves that When the oxygen concentration in the bag is ≤ 1%, the growth, and reproduction of microorganisms are on a sharp decline in the rate of oxygen concentration ≤ 0.5%, and most of the microbes will be inhibited and stop reproducing. (Note: Vacuum packaging cannot inhibit the reproduction of anaerobic bacteria and enzyme reactions caused by food deterioration and discoloration, so it is also necessary to combine with other auxiliary methods, such as refrigeration, quick-freezing, dehydration, high-temperature sterilization, irradiation sterilization, microwave sterilization, salt pickling, etc.).
In addition to inhibiting the growth and reproduction of microorganisms, another important function of vacuum deoxidation is to prevent the oxidation of food. Fatty foods contain a large number of unsaturated fatty acids, which are oxidized by the action of oxygen, making the food tasteless and deteriorating, which requires the use of vacuum deoxidation to ensure the freshness of the food. In addition, oxidation also causes the loss of vitamins A and C. The unstable substances in the food pigment are affected by the action of oxygen, which darkens the color. Therefore, deoxidation can effectively prevent food spoilage.
In addition to vacuum packaging has in addition to the oxygen preservation function, vacuum inflatable packaging is mainly anti-pressure, gas barrier, preservation of freshness, and other roles. This function can be more effective in making the food for a long time to maintain the original color, aroma, taste, shape, and nutritional value.
In addition, many foods are not suitable for vacuum packaging and must be vacuum inflatable packaging. Such as crunchy and fragile food, easy to caking food, easy to deform away from the oil food, sharp edges, or high hardness that will pierce the bag of food. Food by vacuum inflatable packaging, the bag inflatable pressure is greater than the bag outside the atmospheric pressure, can effectively prevent the food pressure broken deformation and does not affect the appearance of the bag and printing and decorating.
Vacuum inflatable packaging in the vacuum and then filled with nitrogen, carbon dioxide, oxygen, and other single gas or two or three gas mixture. Nitrogen is an inert gas, filling role so that the bag maintains positive pressure to prevent the bag outside the air into the bag, and the food plays a protective role. Its carbon dioxide can dissolve in all kinds of fat or water, lead into a weak acidic carbonic acid, there is inhibition of mold, rotting bacteria, and other microbial activity. Its oxygen can inhibit the growth and reproduction of anaerobic bacteria and keep the freshness and color of fruits and vegetables, and the high concentration of oxygen can make fresh meat keep its bright red color.
Advantage of vacuum packing machine
To create the maximum benefit for yourself in the specified time, you have to make sure that your food packaging production line is running well, and there will be no errors in the production process, that in trying to avoid the emergence of errors and the impact of failures to get the maximum benefit for the enterprise. The level of automation is increasing in the manufacturing industry and the range of applications is expanding. Automated operations in the packaging machinery industry are changing the way the packaging process moves and the way packaging containers and materials are processed. The realization of automatic control of the packaging system can greatly improve production efficiency and product quality, significantly eliminating the packaging process printing and labeling and other errors caused by the effective reduction of employee labor intensity and energy and resource consumption. Revolutionary automation has changed the packaging machinery industry's manufacturing methods and product delivery methods. Design, and installation of automatic control of packaging systems, whether from the packaging machinery industry to improve product quality and production efficiency, or from the elimination of processing errors and reduced labor intensity, have shown a very obvious role. Especially for the food, beverage, pharmaceutical, electronics, and other industries are crucial. Automatic devices and systems engineering aspects of the technology are further deepening, and more widely used.
Type of vacuum packing machine
Food vacuum packaging machine
Vacuum sealing machine for food can vacuum pack sausages, meat products, biscuits, and other food products. After packing, the food can prevent mold, preserve quality and freshness, and prolong the storage period of the products, only need to press the vacuum cover to automatically complete the vacuuming and sealing.
Single chamber/double chamber vacuum packaging machine
This type of vacuum sealing machine is very convenient and quick in carrying out a vacuum, the operator only needs to press the vacuum cover to complete the full-automatic process of vacuuming, sealing, printing, cooling, and exhausting.
After packing, the products can prevent oxidation, mold, insect, and moisture, preserve quality and freshness, and prolong the storage period of the products.
Tabletop vacuum packaging machine
Desktop single chamber vacuum packaging machine with good vacuum performance, suitable for food industry meat, sauce products, spices, preserved fruit, grain, soy products, chemicals, herbs and other particles, liquid, and other products for vacuum sealing packaging. Vacuum machine for packing is also suitable for a variety of plastic bags and composite bag vacuum packaging. The machine is small in size, light in weight, low in energy consumption, and suitable for shops, supermarkets, and families. The whole process of vacuuming, sealing, cooling, air intake, and lid opening is controlled automatically.
Tea vacuum packaging machine
Tea vacuum packaging machine is a kind of vacuum packaging machine that uses plastic composite film or plastic aluminum foil composite film as packaging material for all kinds of medicines, grains, fruits, sauces, preserved fruits, aquatic products, local specialties, chemical raw materials, electronic components and military supplies, and so on.
Use of vacuum packing machine
a. Vacuum packing machine should be used at a temperature of -10℃-50℃ and a relative humidity of not more than 85%. There is no corrosive gas in the surrounding air, no dust, and no explosive danger in the environment.
b. To ensure the normal work of the vacuum pump, the vacuum pump motor is not allowed to reverse. The operator should check the oil level frequently, and the normal oil level is 1/2-3/4 of the oil window (not to be exceeded). When there is moisture in the vacuum pump or the oil color becomes black, the oil should be replaced with new oil at this time (generally replaced once in one or two months of continuous work, with 1# vacuum gasoline or 30# gasoline, engine oil can also be used).
c. Impurity filter should be frequently dismantled and cleaned (generally 1-2 months cleaning, such as packaging debris-like objects should shorten the cleaning time).
d. After 2-3 months of continuous work in vacuum wrap machine, the operator should open the back cover of the sliding parts and switch block with lubricating oil, and the heating rod on the various connection activities should be depending on the use of oil lubrication.
e. The decompression, filtration, and oil mist triple 24 should be checked frequently. Make sure that there is oil (sewing machine oil) in the oil mist and oil cup, and no water in the filter cup.
f. Heating bar and silicone strip should be kept clean, not sticking foreign objects, so as not to affect the quality of sealing.
g. On the heating rod, the second layer of sticky paste under the heating sheet plays an insulating role, when there is damage should be replaced in time to avoid a short circuit.
h. Users provide their working gas source and inflatable gas source. The vacuum packaging machine working pressure has been set to 0.3MPa, more appropriate, no special circumstances do not adjust too large.
i. In the process of handling, commercial vacuum packing machine is not allowed to be placed at an angle and impact, not to mention put down handling.
j. Vacuum packaging machine must be installed with a reliable grounding device.
k. Do not put your hands under the heating rod to prevent injury. Cut off the power immediately in case of emergency.
l. When working, the air is energized first and then the power is turned on. When stopping the machine, disconnect the power first and then disconnect the gas.
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