Modified Atmosphere Packaging Technology

Modified atmosphere packaging machine is a necessary food packaging equipment for large-scale food enterprises, fresh meat, cooked food, fruits, vegetables and other distribution enterprises, and large-scale stores. A box-type modified atmosphere fresh-keeping packaging machine was launched. The basic principle of this packaging is to isolate the food from the outside air with high barrier materials (plastic tray and cover film), and the tray is filled with mixed gas to make the packaged food. Maintain the original flavor and appearance for a long time, and inhibit the growth of various bacteria and microorganisms. The equipment adopts a fully enclosed vacuum replacement method to inflate and freshen food packaging, that is, when the vacuum chamber is fully closed, use a vacuum pump to clean the vacuum chamber. Vacuuming is carried out to form a high degree of vacuum in the vacuum chamber, and then filled with gas suitable for prolonged preservation of food. This packaging method can reduce the residual oxygen content in the container, which is beneficial to accurately control the proportion of various fresh-keeping gases. The gas replacement rate of the fully enclosed vacuum replacement method can reach ≥99%, which effectively solves the traditional flushing compensation method. Due to the high residual oxygen content of modified atmosphere packaging, the fresh-keeping effect is not good, the proportion of gas charged is inconsistent, and the shelf life of fresh-keeping food cannot be grasped and controlled. The proportion of mixed gas can effectively keep the packaged food fresh. The modified atmosphere packaging machine is a new type of food preservation technology. The different roles played by the gas can inhibit the growth and reproduction of most microorganisms that cause food spoilage, and reduce the respiration rate of active food (plant foods such as fruits and vegetables), so as to keep the food fresh and prolong the fresh-keeping period. Zhejiang Mingwei Packaging Machinery Co., Ltd. The modified atmosphere packaging machine, modified atmosphere fresh-keeping packaging machine, and fresh-keeping equipment produced can create stable and high-quality food fresh-keeping packaging for enterprises.

product advantages

1. It adopts electric, gas and machine control, and the programmable controller cooperates with the touch screen to realize the man-machine interface dialogue, and each part of the action and control parameters can be set and modified. The control is convenient and reliable, and the failure rate is low.

2. After the packing box filled with articles is put into the lower mold cavity, the packing process is automatically completed: vacuuming, inflating - hot-pressing sealing - slitting - discharging of the packaged product.

3. The main components such as the frame are made of stainless steel, which meets the requirements of food hygiene.

4. Compact structure, small footprint and easy operation.

5. The shape of the mold can be configured according to the box shape selected by the user.

Application field

Modified atmosphere packaging machine is suitable for: fresh meat, cooked meat products, fish, poultry, shellfish, fruit, coffee, tea, vegetables, bread and other supermarket food delivery. Modified atmosphere packaging has the characteristics of keeping food quality, freshness, color, shape and taste, and is popular in European and American markets.

Application advantages

1. The modified atmosphere fresh-keeping packaging adopts airtight packaging, which will not cause the leakage of vegetable soup and maintain the overall clean appearance.

2. The modified atmosphere fresh-keeping packaging machine adopts vacuuming first and then filling with fresh-keeping gas to inhibit the growth and reproduction of bacteria and maintain the freshness of food for a long time.

3. The sealing film of box-type packaging can be printed in color, and the company information, brand information or product information can be printed on it, which has a good advertising effect.

The spoilage of food is an irreversible process, which is mainly caused by the spoilage of the food itself and the decomposition and consumption of the food by the attached microorganisms. Modified atmosphere packaging can suppress the spoilage and deterioration of food through the reasonable proportion of gas for the main characteristics of different foods and the main reasons for deterioration, so as to achieve the purpose of prolonging shelf life. It is mainly because the microorganisms in the package will decompose and absorb the nutrients of the food and release some toxic and harmful substances when they carry out life activities. Therefore, the combination of sterilization technology and modified atmosphere packaging technology can make food safer and have a longer shelf life.