About high temperature cooking bags pressurized heating high-temperature sterilization process

Cooking bags of food processing process food raw materials, processing, bagging, hot melt sealing, inspection, dry heat sterilization, packaging. Among them, bag filling, sealing, bactericidal three processes have the closest relations with high temperature cooking bags itself. （ 1) Bag first, bagging and the capacity of retort pouch to match, bagging quantity most likely to cause pollution during sealing, don't put large or contents with bones, otherwise affect the sealing, even pierced composite membrane leakage caused by food corruption. Second, maintain vacuum bagging, to prevent the oxidation of the bag of food, Browning and fragrance. Again, when the bag sealed to prevent contamination, if the sealing parts have juice, water, heat sealing sealing part of the inner cause vapor pressure, when pressure pincer-like device to eliminate, instant bubbles and make the sealing part of the expansion, lead to the sealing seal. In addition, the lipid classes and fiber is attached to the sealing parts, sealing area cannot. Pressurize the pressure sterilization and cooling, cause the second pollution and leakage of corruption. To prevent the pollution of mouth, one is the control quantity of bags, from the mouth of at least 3 ~ 100 px; 2 it is filling machine is suitable for product features; 3 it is filling with wing protection inserted bag to prevent pollution; Four is bags need to be able to fully open; Five is that bag can locate. （ 2) Seal generally USES hot melt sealing way: heating temperature is 180 ~ 220 ℃, pressure of 30 n/cm&sup 2; , time for 1 s, cool under pressure. Hot melt sealing should be sealed to prevent wrinkles, one is the mouth to level off; Second, both sides knife to smooth seal, and keep the parallel; Three is to limit the content. （ 3) Heat sterilization cooking bags of food and other food microorganism same type of corruption, heat sterilization process according to the characteristics of retort pouch appropriate correction. High-temperature sterilization process retort pouch pressurized heating high-temperature sterilization process can be divided into intermittent and continuous. Heat medium can be saturated steam, steam & ndash; Air mixed or hot water. As a result of the retort pouch material mechanical strength and the sealing strength is low, so the sterilization equipment back pressure sterilization must be used. For cooking bags, mainly USES the constant pressure the pressure way, this way back pressure control is in the sterilization temperature stage began to pass into the compressed air.