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真空充气包装是在抽取真空后
真空充气包装是在抽取真空后,再充入氮气、二氧化碳等气体。氮气是惰性气体,起充填作用,使真空袋保持正压,以防止袋外空气进入袋内,对食品起到一个保护作用。二氧化碳有抑制霉菌、腐败细菌等微生物的活性作用。有些如松脆易碎食品、易变形走油食品、有尖锐棱角或硬度较高会刺破真空袋等食品,经真空充气包装后,真空袋内充气压强大于包装袋外大气压强,能有效地防止食品受压破碎、变形,且不影响包装袋外观及印刷装潢。随着真空袋小包装的推广及超市的发展,其适用范围将越来越广泛,有些将逐步替代硬包装。
Vacuum inflatable packaging is to extract the vacuum, and then fill in nitrogen, carbon dioxide and other gases. Nitrogen is an inert gas, which plays a filling role and keeps the vacuum bag under positive pressure, so as to prevent the air outside the bag from entering into the bag, so as to protect the food. Carbon dioxide can inhibit the activity of fungi, spoilage bacteria and other microorganisms. Some foods, such as crispy and fragile food, easy to deform and take oil, with sharp edges or high hardness, will puncture the vacuum bag. After vacuum inflatable packaging, the air pressure inside the vacuum bag is greater than the atmospheric pressure outside the packaging bag, which can effectively prevent the food from crushing and deformation under pressure, and does not affect the appearance of the packaging bag and printing decoration. With the promotion of vacuum bag small packaging and the development of supermarkets, its application scope will be more and more extensive, some will gradually replace hard packaging.
真空除氧除了抑制微生物的生长和繁殖外,另一个重要功能是防止食品氧化,因油脂类食品中含有大量不饱和脂肪酸,受氧的作用而氧化,使食品变味、变质。此外,氧化还使维生素A和维生素C损失,食品色素中的不稳定物质受氧的作用,使颜色变暗。所以,除氧能有效地防止食品变质,保持其色、香、味及营养价值。
In addition to inhibiting the growth and reproduction of microorganisms, another important function of vacuum deoxidization is to prevent food oxidation, which is caused by the oxidation of a large number of unsaturated fatty acids in oil and fat foods, which will cause food to taste and deteriorate. In addition, oxidation also causes the loss of vitamin A and vitamin C, and the unstable substances in food pigments are affected by oxygen, which makes the color dark. Therefore, deoxidization can effectively prevent food deterioration and maintain its color, aroma, taste and nutritional value.

联系方式

  1. 名称:包装材料有限公司
  2. 电话:13313028229
  3. 手机:13313028229
  4. 联系人:刘经理
  5. 地址:xx

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