Analysis of bag explosion in high temperature cooking

As for the phenomenon of bag explosion in high-temperature cooking bags, it is not uncommon. Our technical experts said that the main reason is that the technical level of relevant manufacturers is not good. We asked the cooking bag manufacturers to analyze the causes of bag explosion.

The steaming bag manufacturer said that the steaming bag put water into the bag according to the regulations, and the exhaust was sealed. After careful observation, we found that the air was not discharged completely. The heating process before 100 ℃ shows that the sealed glass ball represents the closed bag. It can be seen that the expansion of the boiled bag is normal during heating. The reasons are analyzed as follows: when entering the water seal at room temperature, the pressure inside and outside the bag is balanced. During the process of heating to 98oC at room temperature, the liquid water itself will expand, and the air in the bag will expand. At this time, the generated water vapor also occupies part of the space, resulting in expansion. At this time, the pressure in the bag will increase. The burst of the bag is caused by the creep of the polymer material at the sealing part under this thermal state, which is not enough to support the pressure. This strength is called the thermal burst strength. It is analyzed that the reason is the strength reduction when heated, which is the normal situation encountered in our production. If the bag is not sealed properly, the bursting strength is very low at normal temperature. It is a defective product in production. Although there is no leakage, it is easier to burst when heated.

The above is the analysis of the cooking bag manufacturer on the reasons for the bursting of the cooking bag. Here, I would like to remind you that you must buy the cooking bag from a regular manufacturer. After Z, Jiangsu Genda Packaging Co., Ltd. wishes you a happy life!