What Is Vacuum Packing?

Also known as decompression packaging, the air in the packaging container is completely extracted and sealed to maintain a highly decompressed state in the bag. The scarcity of air is equivalent to the effect of hypoxia, which makes microorganisms have no living conditions to achieve fresh fruit and no disease. purpose. Applications include vacuum packaging in plastic bags, aluminum foil packaging, glassware, plastic and its composite packaging. Packaging materials can be selected according to the type of article. Because fruits are fresh foods, they are still breathing, and high levels of hypoxia can cause physiological diseases. Therefore, vacuum packaging of fruits is less common.

Vacuum packaging

Also known as decompression packaging, the air in the packaging container is completely extracted and sealed to maintain a highly decompressed state in the bag. The scarcity of air is equivalent to the effect of hypoxia, which makes microorganisms have no living conditions to achieve fresh fruit and no disease. purpose. Applications include vacuum packaging in plastic bags, aluminum foil packaging, glassware, plastic and its composite packaging. Packaging materials can be selected according to the type of article. Because fruits are fresh foods, they are still breathing, and high levels of hypoxia can cause physiological diseases. Therefore, vacuum packaging of fruits is less common.

Chinese name

Vacuum packaging

Function

Protect products from pollution,

begins at

1940s

Features

Guarantee the value and quality of the product

Vacuum packaging is a product that protects the product from environmental pollution and prolongs the shelf life of food, which can increase the value and quality of the product. Vacuum packaging technology originated in the 1940s. Since 1950

1. The purpose is to reduce the oxygen content in the package, prevent the mildew of the packaged food, maintain the color and aroma of the food, and extend the shelf life.

2. Of course, vacuum packaging has an important role in food. But it has an extraordinary effect in the processing of clothing items.

3. Compared with ordinary packaging methods, vacuum packaging reduces the space occupied by items. It also has the advantages of being moisture-proof, dust-proof, and bacteria-proof, making it easier to transport clothing items.

4. Greatly reduces the possibility of losses caused by some accidents.

Vacuum, a term translated from the Latin vacuum, is meaningless. In fact, vacuum should be understood as a space where the gas is thinner. In a given space, the state of a gas below one atmospheric pressure is collectively called a vacuum. The degree of gas thinning under vacuum is called degree of vacuum, and is usually expressed by pressure. Therefore, vacuum packaging is not actually completely vacuum. The vacuum degree in food containers packed with vacuum packaging technology is usually 600-1333Pa. Therefore, vacuum packaging is also called decompression packaging or exhaust packaging.

An important part of vacuum packaging is deoxidation, which is helpful to prevent food spoilage. The principle is relatively simple, because the mold s spoilage of food is mainly caused by the activity of microorganisms, and the survival of most microorganisms (such as mold and yeast) Oxygen is needed, and vacuum packaging uses this principle to remove the oxygen in the packaging bag and food cells, causing the microorganisms to lose their "living environment". The experiment proves that when the oxygen concentration in the packaging bag is 1%, the growth and reproduction speed of the microorganisms drops sharply, and the oxygen concentration is 0.5%, and most of the microorganisms will be inhibited and stop breeding. (Note: Vacuum packaging cannot inhibit the deterioration and discoloration of food caused by the proliferation of anaerobic bacteria and enzyme reactions, so it needs to be combined with other auxiliary methods, such as refrigeration,

There are many types of vacuum packaging machines, and the following factors should be considered in the selection.

a) Packaging speed. In order to improve production efficiency, you can choose a double-chamber or multi-chamber vacuum packaging machine to improve the overall production progress.

b) Whether the packaged items need to be filled with other protective gases. Optional multi-functional vacuum packaging machine with inflatable device.

c) the vacuum requirements of the packaged items. If the packaged goods need to be stored under high vacuum conditions, you need to choose a cavity vacuum packaging machine.

d) the requirements of the packaged product on the vacuum packaging machine.

When purchasing, dry and non-corrosive materials such as solids and granules can be packaged with aluminum alloy. For soups with high salt and acid content, stainless steel or aluminum-magnesium alloy can be used. . The sealing ring is generally made of silicone rubber, black rubber, and a few low-end products are made of foamed rubber. Silicone rubber has high temperature resistance, corrosion resistance, good sealing performance, and long service life. Foam rubber has poor sealing performance, easy to fall off, and short service life.

Eliminates part of the air (oxygen) in the packaging container, which can effectively prevent food spoilage.

The use of packaging materials with excellent barrier properties (air-tightness) and strict sealing technology and requirements can effectively prevent the exchange of packaging contents, which can avoid weight loss and taste loss of food and prevent secondary pollution.

The gas inside the vacuum packaging container has been eliminated, which accelerates the conduction of heat, which can improve the thermal sterilization efficiency, and avoid the packaging container from being broken due to the expansion of the gas during heating and sterilization.

1.Pickled bacon products: sausage, ham, bacon, plate duck, etc.

2.Pickled vegetables: mustard, dried radish, kohlrabi, pickles, etc.

3.Bean products: dried tofu, vegetarian chicken, bean paste, etc.

4, cooked food products:

Small single-chamber vacuum packaging machine is mainly used for vacuum packaging of small objects, mainly medicine, candy food.

Evacuation capacity:	20m3 / h
Work cycle:	15-40 seconds / time
size:	500 × 530 × 1000mm
Voltage:	220V 50HZ
power:	1.0KW

A brief analysis of the future prospects of vacuum packaging technology.

I. High efficiency: The production efficiency of vacuum packaging machine has developed from several pieces per minute to dozens of pieces. The production of thermoforming-filling-sealing machine can reach more than 500 pieces / minute.

Automation: The TYP-B series rotary vacuum chamber packaging machine produced by a Japanese company has a multi-station with a relatively high degree of automation. The machine has two turntables for filling and vacuuming. The filling turntable has 6 stations, which completes bag feeding, feeding, filling and pre-sealing until the packages are sent to the vacuuming turntable. The vacuum turntable has 12 stations, that is, 12 vacuum chambers, completes the vacuum and seals until the output of the finished product. The production efficiency can reach 40 bags / min. It is mainly used for packaging soft canned food.

Second, single-machine multi-function: to achieve multi-function on a single machine can easily expand the scope of use. To achieve single machine multi-function, a modular design must be adopted. Through the transformation and combination of functional modules, it becomes a different type of vacuum packaging machine suitable for different packaging materials, packaging items, and packaging requirements. Typical products are multi-station bag-making vacuum packaging machines produced by the German Bosch company's HESSER factory. The bag-making, weighing, filling vacuum, sealing and other functions can be completed on a single machine.

Third, the assembly line: When the production line needs more and more functions, concentrating all the functions on a single machine will make the structure very complicated, and the operation and maintenance are not convenient. At this time, several machines with different functions and matching efficiency can be combined into a more complete production line. Such as fresh fish developed by French CRACE-CRYOYA and ISTM companies, vacuum packaging production line and textile vacuum packaging system developed by Sweden Shuhong International Co., Ltd. and Swedish Textile Research Institute.

4. Adopting new technology: In the packaging method, a large number of inflatable packaging is used instead of vacuum packaging, and the three aspects of inflatable components, packaging materials and inflatable packaging machines are closely combined; in control technology, more computer technology and micro Electronic technology; in the aspect of sealing, apply heat pipe and cold sealing technology; install advanced devices directly on vacuum packaging machines, such as computer-controlled high-precision combination of coarse particles; on rotary or vacuum packaging machines, apply advanced high-speed Arc surface cam indexing machinery, etc. The adoption of all these new technologies makes the vacuum packaging machine more efficient and intelligent.

Vacuum packaged products have been widely used in people's lives. Vacuum-packed products have many advantages, such as good quality and freshness, anti-corrosion and anti-rust, small space occupation, easy to carry and so on. Vacuum packaging has a wide range of applications and has penetrated into all walks of life and is welcomed by everyone. ^[1]