Knowledge about the use of vacuum packing bag

1, pay attention to the storage environment temperature of vacuum packaging effect. All kinds of gas in the air permeability coefficient of packaging materials and temperature have a close relationship. In general, as the temperature increases, the permeability coefficient of packaging materials also correspondingly increases, the greater the gas transmittance of thin films, and therefore the vacuum packaging of food, appropriate under the low temperature storage, if storage at high temperatures, will be because of the increase of ventilation rate and make the food metamorphism in the short run. Vacuum packing food should be in commonly below 10 degrees Celsius storage and circulation. 2, vacuum packaging process operation quality. Hot sealing, vacuum packing, pay attention to the packing materials inside under the sealing parts don't sticky residues such as fat, protein, to ensure the sealing quality, heating sterilization process for vacuum packing, should strictly control the sterilization temperature and sterilization time, avoid packing internal pressure caused by the temperature too high, which can lead to rupture and sealing parts, packaging materials, or because the temperature does not reach the effect of sterilization. In addition, when the vacuum packing must fully extraction, pay special attention to for fresh meat and amorphous food vacuum packaging, cannot remain air-pocket, prevent caused by residual air residual microbial reproduction and make the food deterioration in shelf life. 3, vacuum packing is not suitable for food. Because of commonly used vacuum packaging composite film material, these materials can't packing fragile food, if you are packaging angular, is easy to penetrate. As a result, these food packaging should try not to use vacuum packing technology, and other packaging method.
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