During the storage process of food vacuum packaging machines, there are many reasons for the deterioration of the contents. The most common reason is that the film barrier function and the sealing performance of the packaging bag are poor. For the former, it is necessary to fully consider the efficiency and thickness of each layer of material when designing the packaging bag, so as to obtain sufficient barrier function. The tightness of the food vacuum packaging machine packaging bag refers to the characteristics of the packaging bag to prevent other substances from entering or the contents from escaping. In this way, in the production process of food packaging bags, due to the relatively large number of production links, heat sealing leakage, compression, or cracks or micropores in the material itself may occur, thereby forming small holes or weak points of internal and external communication. . This will have a very negative impact on the food, and directly affect the quality of the product, especially the small holes. It is easy to cause the food part to be directly exposed to the air, and it loses the freshness of the packaging bag.
Food vacuum packaging machine is very important for sealing performance, precaution and post-mortem inspection. By strengthening after-the-fact inspections and timely discovering seal defects, it is undoubtedly used as a reference for precautionary measures. Under normal circumstances, the instant noodles are immersed in water and a vacuum is drawn to the outside world. If there is a leak in the packaging bag, there is a bubble like a tire leak, so the leak can be clearly found. The commonly used method for measuring the sealing performance is a test device with a vacuum. The pipeline includes a gas source connection pipe, a vacuum pipe connected to a vacuum source, and an atmospheric gas exhaust pipe. It is used to measure the accuracy of the vacuum in the vacuum chamber and the control device must not be lower than the standard level.