desktop vacuum packing machine

In the food industry, vacuum packaging is widely used. Various processed foods (delicatessen) such as chicken legs, ham, sausages, grilled fish fillets, beef jerky, as well as preserved foods like pickled vegetables, tofu products, dried fruits, are increasingly adopting vacuum packaging for preservation.

Features:

• Removing some of the air (oxygen) from packaging or container can effectively prevent food from spoiling or deteriorating.
• Utilizing excellent packaging materials with barrier properties (airtight, impermeable to air) , and employing strict sealing techniques and requirements, effectively preventing the exchange of substances within the packaging can avoid weight loss, flavor loss, and also prevent secondary contamination.
• The removal of gasses from within the vacuum-packaged container accelerates heat condition, which not only enhances thermal sterilization efficiency, but also prevents packaging rupture due to gas expansion during thermal sterilization.
• Front in, right out
• Compression vacuum packing machine adopts the instant heating method from a stationary (fixed) heat box, saving energy.
• Special electric heating arrangement for uniformed heat distribution
• Compact machine body, occupying a small footprint.
• Suitable for small-scale and medium scale production, this desktop vacuum packing machine can be used in conjunction with assembly lines to enhance efficiency.
• Using original imported parts from Taiwan, Japan, and South Korea,  this machine ensures stable and reliable performance.

Vacuum packaging machine uses plastic or plastic-aluminum foil films as packaging material to vacuum package various types of food such as liquids, solids, powders, pastes, as well as grains, fruits, pickled vegetables, dried fruits, chemical products, medical herbs, electronic components, precision instruments, rare metals, etc. Items vacuum-packaged are protected from oxidation, mold growth, insect infestation, deterioration (rot), moisture, thereby extending their shelf life. Particularly suitable for industries such as tea, food, medicine, retail, research institutions, etc., It features an attractive appearance, compact structure, high efficiency, easy operation, and bottom-mounted casters for easy mobility.

How does vacuum packaging maintain freshness

Primarily function of vacuum packaging is to eliminate oxygen, which helps to prevent food spoilage. The principle behind this is rather simple: food spoilage, mainly caused by microbial activity such as mold and yeast, relies on the presence of oxygen, most microorganisms require oxygen for survival. Vacuum packaging operates on this principle by removing oxygen from the packaging and the food, creating an environment where microorganisms cannot survive. Experimental evidence has shown that when the oxygen concentration inside the packaging is ≤1%, the growth and reproduction rate of microorganisms sharply decreases, when the oxygen concentration is ≤0.5%, the majority of microorganisms are inhibited and cease reproduction. (Note: Vacuum packaging cannot inhibit anaerobic bacteria or prevent food discoloration and spoilage caused by enzymatic reactions, thereby it needs to be combined with auxiliary methods such as refrigeration, freezing, dehydration, high-temperature sterilization, irradiation sterilization, microwave sterilization, and salting.)

In addition to the inhibiting growth and reproduction of microorganisms, another crucial function of vacuum deoxygenation is to prevent food oxidation. Due to the high content of unsaturated fatty acids in lipid-rich foods, they are susceptible to oxidation when exposed to oxygen, leading to flavor changes and spoilage. Additionally, oxidation results in the loss of vitamins A and C, besides, the unstable substances in the food colorants are prone to darkening when exposed to oxygen. Therefore, deoxygenation effectively prevents food spoilage.

In addition to the deoxygenation provided by vacuum packaging, vacuum-inflated packaging also primarily serves as a means to resist pressure, block gas, and preserve freshness. This method is more effective in maintaining the original color, aroma, flavor, shape, and nutritional value over an extended period.

Additionally, they are many types of foods that are not suitable for vacuum packaging and must be packaged using vacuum inflated packaging. These include crispy and fragile foods, foods prone to clumping, foods susceptible to deformation and oil leakage, as well as foods with sharp edges or high hardness that could puncture the packaging bag. After food is vacuum inflated packaged, the internal pressure of the packaging bag is greater than the atmospheric pressure outside the packaging bag, effectively preventing the food from crushed or deformed without affecting the appearance and printing decoration of the packaging bag.

Vacuum inflated packaging involves introducing single gasses such as nitrogen, carbon dioxide, oxygen, or a mixture of two or three gasses after vacuuming. The nitrogen being an inert gas, services the purpose of filling, maintaining positive pressure inside the bag, preventing air from entering the bag from outside, thus providing protection to the food. Carbon dioxide can dissolve in various fats or water, forming a weakly acidic carbonic acid, which inhibits the activity of mold, decay bacteria, and other microorganisms. Oxygen has the ability to inhibit the growth and reproduction of anaerobic bacteria, thus preserving the freshness and the color of fruits and vegetables, high concentrations of oxygen can also maintain the fresh red color of meat.

Classification of vacuum packing machines

The basic purpose of vacuum packaging machines can be categorized into the following 4 types:

• Food vacuum packing machine. This type of vacuum packaging machine requires temperature control before vacuum packaging, and the equipment comes with a built-in cooling system. Therefore, it has high requirements for preservation.
• Medical vacuum packing machine. This type of vacuum packing machine should have a vacuuming form from that allows products to be preserved for a longer period of time. Due to the fact that medical vacuum packing machine should be used in clean and sterile environment, they can also be applied to food packaging with sterile requirements, achieving excellent results.
• Electronic components vacuum packing machine. This type of vacuum packing machine can effectively prevent moisture, oxidation, and discoloration of items packaged with it.
• Tea leaf vacuum packing machine. This is a machine that integrates weighing, external packaging, internal packaging capabilities. The emergency of tea leaf vacuum packaging machines signifies a significant advancement in the standardization of tea leaf packaging domestically, achieving true standardization in tea leaf packaging.

Internal vacuum packing machine

Common classification are: single chamber vacuum packing machine, double chamber vacuum packing machine, tabletop vacuum packing machine, and tea leaf vacuum packing machine. These machines can be used for vacuum packaging of solid liquid, powdered, pasty foods, grains, fruits, pickles, dried fruits, chemical drugs, electronic components, precision instruments, rare metals, and other products. The packaging effect is tight, firm, and aesthetically pleasing.

External vacuum packaging machine

• Relay + vacuum generator
• Relay + high quality vacuum pump
• PLC control + high quality pump
• PLC control + LCD display + high quality pump

All four of the above configurations are prevalently available on the market,  the fourth option is the most convenient to operate, offers the highest level of visualization, and has the lowest maintenance rate among the four options. It is best suited for large or irregularly shaped items.

Machine selection principle

Given a wide variety of vacuum packing machines available, careful consideration of the following factors is essential before making a procurement decision.

• Packaging speed. For the purpose of improving production efficiency, dual-chamber or multi-chamber vacuum packing machine can be chosen to expedite the overall production process.
• Whether the packaged items require filling with additional protective gas should be taken into consideration, multifunctional vacuum packing machine equipped with gas filling devices can be chosen for this purpose.
• The vacuum level requirements of the package items should be considered. If the items need to be preserved under high vacuum conditions, then a chamber vacuum packing machine should be selected.
• The composition and state of the packaged items determine the requirements for the vacuum packaging machine.

To maximize profits within a specified timeframe, it is essential to ensure the smooth operation of your packing production line, minimizing errors and faults during the production process. By doing so, you can mitigate the impact of errors and failures, thus enabling the enterprise to achieve maximum profitability. The level of automation in the manufacturing industry continues to rise, with its application scope expanding. In the packaging machine industry, automated operations are changing the way packaging processes are carried out, as well as the processing methods of packaging container and materials. The packaging machines, integrated with automated control, can significantly improve packaging efficiency and product quality. They help eliminate errors caused by packaging process, printing, and labeling, thereby reducing labor intensity and minimizing energy and resource consumption. The revolutionary automation is changing the manufacturing methods and transportation of products in the packaging machinery industry. The design and installation of automated control packaging systems play a significant role in improving both of the product efficiency and product quality in the packaging machinery industry. They also contribute significantly to the elimination of processing errors and reduction of labor intensity. Especially for industries such as food, beverage, pharmaceuticals, and electronics, automated control packaging systems are crucial. The technology in the automated devices and systems engineering is further advancing and seeing broader applications.