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Product characteristics of vacuum packaging bags

by:Supouches Packaging     2022-08-06
The main function of vacuum inflatable packaging is not only the deoxygenation and quality preservation function of vacuum packaging, but also anti-pressure, gas blocking, fresh-keeping and other functions, which can more effectively maintain the original color, aroma, taste, shape and shape of food for a long time. nutritional value. In addition, there are many foods that are not suitable for vacuum packaging and must be vacuum inflated. Such as crunchy and fragile food, food that is easy to agglomerate, food that is easy to deform and lose oil, food with sharp edges and corners or high hardness that will pierce the packaging bag, etc. After the food is vacuum-packed, the inflation pressure inside the bag is stronger than the atmospheric pressure outside the bag, which can effectively prevent the food from being crushed and deformed under pressure without affecting the appearance and printing and decoration of the bag. The vacuum inflatable packaging is filled with nitrogen, carbon dioxide, oxygen single gas or a mixture of two or three gases after vacuum. Its nitrogen is an inert gas, which plays a filling role to maintain a positive pressure in the bag to prevent the air outside the bag from entering the bag, and has a protective effect on the food. Its carbon dioxide can be dissolved in various fats or water, resulting in weak acid carbonic acid, which has the activity of inhibiting microorganisms such as mold and spoilage bacteria. Its oxygen can inhibit the growth and reproduction of anaerobic bacteria, maintain the freshness and color of fruits and vegetables, and high concentration of oxygen can keep fresh meat bright red. Advantages of using vacuum packaging bags High barrier: Co-extrude films with high barrier properties of different plastic materials to achieve high barrier effects on oxygen, water, carbon dioxide, odor, etc. Stable performance: oil resistance, moisture resistance, low temperature freezing resistance, quality preservation, freshness preservation, odor preservation, can be used for vacuum packaging, aseptic packaging, inflatable packaging. Low cost: Compared with glass packaging, aluminum foil packaging and other plastic packaging, to achieve the same barrier effect, co-extruded film has a greater cost advantage. Due to the simple process, the cost of the film products produced can be reduced by 10-20% compared with dry composite films and other composite films. 4. Flexible specifications: it can meet your different needs for different products. High strength: The co-extruded film has the characteristics of stretching during the processing process. After the plastic is stretched, the strength can be increased accordingly. It is also possible to add nylon, polyethylene and other plastic materials in the middle to make it have a composite strength that exceeds that of ordinary plastic packaging. There is a phenomenon of delamination and peeling, good flexibility and excellent heat sealing performance. Small volume ratio: The co-extruded film can be vacuum shrink-packed, with a volume-to-volume ratio of nearly 100%, which is unmatched by glass, iron cans and paper packaging. No pollution: no binder is added, no residual solvent pollution problem, green and environmental protection. Moisture-proof + anti-static + explosion-proof + anti-corrosion + heat insulation + energy saving + single perspective + UV isolation + low cost + small capacity ratio + no pollution + high barrier effect.
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