After high temperature sterilization, food packaging aluminum foil bag burst?

Aluminum foil bags commonly used in instant food packaging, such as beef, chicken feet, duck palm, bean curd meat, soy foods, etc. Ready-to-use food is usually use high temperature sterilization, for aluminum foil bag natural needless to say, resistance to high temperature above 121 ℃. But sometimes, after high temperature sterilization, aluminum foil bag will happen there will be a bulge bag, the phenomenon of broken bags. Encounter this kind of situation, what should we do? How to solve this problem. Packaging on the basis of their own experience, has the following point of view, each reader might as well have a look. First of all, we have to analysis can resistance to high temperature of 121 ℃ aluminum foil food packaging happen bulge bag, bag. This is a question of hot and cold air pressure in high temperature sterilization in furnace, aluminum foil bags generally in the middle of the furnace, the temperature higher than the edge, the aluminum foil thermal conductivity is very good also, bags inside air is heated, bag pressure higher than space pressure inside the furnace. Differential pressure will foil bags hold up, causing a bulge bag phenomenon. When the pressure difference is greater than the heat seal strength of the packaging bags, aluminum foil bag would be broken bag. By analyzing the reasons, we can find to solve the problem of the aluminum foil bag burst, the key lies in the aluminum foil bag of residual gas and heat sealing strength. Aluminum foil bag of residual gas is likely to be vacuum residue too much gas, it is possible that the aluminum foil bubble. Distinguish method: open the bulge bag aluminum foil bag flat out, see if there is a summon the bag surface. There is a compound quality problem, no problem is vacuum. Compound quality problems require aluminum foil bag suppliers to improve, strengthen the composite after detection of bubbles. Vacuum problems lead to aluminum foil bag burst have two situations: 1, vacuum way, pump, vacuum corner will cause gas residue too much; This kind of situation to improve the way of vacuum. If don't improve, also can choose better heat sealing strength aluminum foil bag, prevent broken bag phenomenon, after being cooled, repeated pressure, eliminate the phenomenon of flat bulge bag. 2, aluminum foil bag is too thick, flexible is bad, can't fit well with fillings, lead to excessive residual gas. This need to choose a thinner and more soft, better fit the aluminum foil bag. If after high temperature sterilization, aluminum foil bag broken bag phenomenon more, less bulge bag. This needs to solve the problem of aluminum foil bag heat sealing strength, heat sealing layer, adjust heat sealing parameters, Settings, all is the solution to increase the intensity of heat sealing. Above is solved after high temperature sterilization, food packaging aluminum foil bag burst problem, hope useful for you friends. 【 Food packaging 】 Tags: aluminum foil bag
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