Instruction in the vacuum bag is small for you

In the past two years, the popularity of vacuum bag, to attract the attention of many people. And they also want to buy a vacuum bag, used for packing food. So how to choose and buy the vacuum bag? What is the principle of vacuum bag? Might as well listen to the professional packaging analytic together! # # vacuum bag small knowledge vacuum packing food sack, pulled out of air inside the bag, to the expected after vacuum degree, complete sealing process. Vacuum packing food sack, draw out the air in the bag to the expected after vacuum degree, and blended into nitrogen or other gases, and then complete the sealing process. Vacuum bag also called vacuum packaging, is take out all the air in the container seal, maintain bag at high stress state, the rare air of low oxygen effect, make no microorganisms living conditions, in order to achieve the purpose of fruit fresh, disease-free corrosion occurs. The current application of plastic bag vacuum packing, the aluminum foil packing, glassware, etc. Can choose according to item packaging materials. Because the fruit is fresh food, is still in the respiration, altitude hypoxia can cause physiological diseases, therefore, less fruit class use vacuum packing. At present, the vacuum bag is mainly used in food packaging, food such as meat, grain processing and easy oxidation of food, can also be used for mechanical parts, instruments and feather products, fur products such as fluffy products packaging. As people living standard gradually improve, as well as the improving of the quality of life, vacuum bag in contemporary people's life is now the dominant position of the integral, it is a typical field of vertical and packaging technology, plays an irreplaceable role. http://www。 kxpack。 Com vacuum packing bag, simple and clear to say it is oxygen is the most important role, so as to prevent food spoilage. The principle of vacuum packing bag is very simple. Food metamorphism is the main reason causing mold caused by microbial activity, and microorganisms, Such as mold and yeast) Survival is need oxygen, vacuum packing is using this principle, the packaging and food within the cell oxygen smoke, lose microbial 'survival environment'. At the same time, it also prevents the food make sour food, deterioration due to oxidation, to achieve the effect of food storage and preservation for a long time. Food vacuum packaging materials, the performance of a direct impact on the changes of the storage life of food and taste. In vacuum packing, choose good packaging material is the key to the success of packaging. Main material of food vacuum bag since it comes to vacuum packaging materials, it is essential to the material classification, the following is suitable for vacuum packing of the material characteristics: one, the PE is suitable for the use of low temperature, RCPP suitable for high-temperature cooking; Second, PA is to increase physical strength, durable thorn performance; Third, AL foil is to increase the blocking performance, shading; Four, PET, increase mechanical strength and stiffness. Then according to the demand, combination, all kinds of performance, there are transparent, in order to increase the blocking performance using PVA water resistant high barrier coating. Vacuum bag several compound type is commonly: PA/PE, PA/RCPPPET/PE or PET/RCPP also has three layers, four layers, in order to increase the material quality performance: PET/PA/PEPET/AL/RCPPPA/AL/RCPPPET/PA/AL/RCPP is oxygen, the main function of the vacuum bag to prevent food spoilage, its principle is simple, because food metamorphism causing mold mainly caused by the activity of microorganism, and most microorganisms ( Such as mold and yeast) Survival is need oxygen, and vacuum packing is using this principle, the packaging and food within the cell oxygen smoke, lose microbial 'survival environment'. Experimental results show: when the concentration of oxygen in the packaging 1% or less, microbial growth and reproduction rate fell sharply, oxygen concentration 0 or less. 5%, most microbes will be reined in and stop breeding. （ Note: vacuum packing can inhibit anaerobic bacteria breeding and enzyme reaction caused by food metamorphism and discoloration, so still need to combine with other auxiliary methods, such as cold storage, frozen, dehydrated, high temperature sterilization, irradiation sterilization, microwave sterilization, salting, and so on. ) Vacuum deaeration besides inhibiting microbial growth and reproduction, another important function is to prevent the oxidation of the food, because the oil kind food contains A lot of unsaturated fatty acid, by the effect of oxygen oxidation, sour food, deterioration, in addition, the oxidation also make vitamin A and C loss, volatile substances in food pigment by the role of oxygen, make the color darker. So oxygen can effectively prevent food spoilage, maintain its color, aroma, taste and nutritional value. In addition to the main function of vacuum packaging vacuum packaging quality of deoxidization function, main and compressive strength, the air resistance, the preservation effect, can more effectively to make food for a long time to keep the original color, aroma, taste, shape, and nutritional value. The use of vacuum packing bag features ( Shantou packing, professional production of various kinds of packing) 1, high separation: using different high separation performance co-extrusion film, plastic material of oxygen, water, carbon dioxide, odor such as blocking effect. 2, stable performance, oil resistant, resistant to moisture, resistant to low temperature freezing, with good quality, fresh, odour, can be used for vacuum packing, aseptic packaging, inflatable packaging. 3, low cost, relative to the glass packing, the aluminum foil packing and other plastic packaging, to achieve the same barrier effect, co-extrusion film has great advantage on cost. Because of its simple process, the products of thin film production cost compared with the dry type composite film and other composite membrane can reduce 10 - 4, flexible specifications: 20% of different products can meet your different needs.
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