The effect of vacuum bag and color design points

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 goal of packaging fresh, disease-free corrosion occurs. Now whether it is food, oil, fruits, vegetables, poultry, aquatic products processing and preservation is basic storage is in a state of low-level, extensive, packaging level at a certain level reflects a national science and technology level and the degree of the rich. According to conservative estimates, horticultural crops postharvest losses almost can satisfy the basic nutrition requirement of two hundred million people. Although there are some chemical preservation methods, but people safe sex there is some concern about chemical preservatives, so physical pollution-free method of modified atmosphere has become research hotspot. Vacuum bag so, the development and popularization of fresh-keeping technology increasingly attention by producers, operators and consumers. The main purpose of the vacuum bag is the oxygen 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 micro physical & other; The survival of the environment & throughout; 。 Characteristics of the vacuum bags, moisture-proof, anti-static, explosion-proof, decay, insulation, ultraviolet light, low cost, small volume ratio, such as no pollution, high separation effect. Now many food manufacturers according to their own food characteristics of the vacuum bag to use color design. The continuation of the emotions of people of color will over time and the aesthetic trend of change and change, so how to grasp the trend of fashion colour, design conforms to The Times of the appearance, strengthen the food vacuum packaging, colour is the call of the force larger bring food vacuum packaging color language features, trust is an important factor of each food companies have to consider. Such as living in the loess plateau and yunnan-guizhou plateau of some ethnic minorities or remote mountainous area people like gaudy some very bright colors, such as vacuum bag color with national, regional, customs, abstinence objective restrictions. The grassland mountain and his life background, bright-coloured color at the same time shows the vigorous vitality and love for life. And ordinary rural residents, mostly preferred, pure and fresh quietly elegant, lively color. Vacuum bags have damaged in transit, also is the enterprise have to attach importance to the problem, vacuum bag breakage basically has the following several reasons: 1, food vacuum packaging design. Such as the net content of contents or volume beyond the scope of soft packaging materials used, in the process of transportation or distribution, slightly affected by external force, torn bags, cracking problems will occur. Generally as a vacuum bag heat sealing layer, the thickness of the material shall be not less than 50 microns thick. 2, the quality of the food vacuum packaging material. Packaging material quality problems lead to the finished product packing sealing cracking problems, generally focus on the following aspects: (1) physical and mechanical properties of the food packaging & ndash; — Such as the tensile force and pull-apart extension, the puncture strength, pendulum impact resistance and peel strength etc. , can be integrated judgment bags toughness, durable thorn, impact resistance and other physical and mechanical properties conform to the packaging, storage stack and transportation needs. （ And contents, packaging, transportation way and the size of the packaging) (2) food packaging sealing & ndash; — Such as blasting pressure test to determine the location of the broken bags and mechanical strength is weak. Such as heat sealing strength test can determine whether heat sealing strength meet the requirements of food contents, and determined the poor heat sealing parts and the effect of heat sealing the evenness. Such as vacuum-packed chicken feet have damaged because of chicken feet are segmentation, some broken jaw bones were very sharp cutting, coupled with the boiling time, the skin contraction, so bare bones, in the process of transportation will bag broken easily. Therefore, durable bags should be considered as the focus of the packaging material combination. Through leakage and sealing strength tester can detect not only the biggest rupture strength, flexible packaging bags can also through the set pressure to test the burst time of packaging, can be designed according to test data stacking structure, further adjustment of heat sealing process parameters to improve the packaging effect, or according to the location of the flexible packaging bags broken packaging structure on the analysis of existing problems.
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