Details To Pay Attention To When Purchasing Modified Atmosphere Packaging Machines

Modified Atmosphere Packaging Equipment is a new food preservation technology. It uses a protective mixed gas (usually CO2, N2, O2) to replace the gas in the package. It uses various protective gases to play different roles, inhibits the growth and reproduction of most microorganisms that cause food mold, and reduces the absorption rate of active ingredients, thereby preserving food and increasing its freshness.

It is mainly composed of ultrafiltration device, aeration system, electrical control system, electrical execution system, film cutting system, temperature control system, heat sealing film expansion system, optical control system and mold.

When buying a modified atmosphere packaging machine for fruits and vegetables, the following factors should be considered:

1. The residual amount of o2 in the package. The standard in the industry is that the oxygen content is below 1%, and the lower the value, the better.

2. Gas mixing accuracy. The gas deviation should be less than 2%. If the content is too high, it will cause changes.

3. The mechanical pump plays a very important role in the packaging machine. It is mainly responsible for extracting the air from the small box, and this is the stage that determines whether the extracted air is clean. If it is not clean, there is still some air. Even if the introduced refrigerated air is of high precision, the refrigeration effect cannot be achieved. Therefore, the selection of mechanical pumps depends on the type of mechanical pumps configured by the equipment manufacturer.

4. The sealing flatness and firmness of the equipment should be avoided to prevent wrinkles or bubbles and prevent air leakage.

The insulation performance of food packaging depends on the characteristics of the food itself, and different foods have different insulation performance. On the one hand, the natural barrier of food packaging ensures that various bacteria, dust, light, air and moisture in the environment will not enter the packaged food. On the other hand, it can ensure that the moisture, vegetable oil and aromatic components in the food, as well as the main components of the food quality, will not penetrate outward to ensure that the packaged food will not be affected.

There are also some food packaging materials whose gas barrier should be selective, such as the packaging of fresh fruits and vegetables. By controlling the diameter of the materials, you can selectively pass O2 and CO2, thereby controlling the air absorption strength of the packaged food and maintaining the freshness of fruits and vegetables.