Inflatable flexible packaging vacuum packaging and vacuum applications - vacuum packaging, flexible packaging, applications - plastics industry

The main role of vacuum-packed oxygen removal to help prevent food spoilage, its principles are relatively simple, due to deterioration of food mold rot caused mainly by microbial activity, and most micro-organisms (such as mold and yeast) lives on oxygen , while the vacuum packaging is the use of this principle, the packaging bag and the food's oxygen deprived cells, the microbial lost "living environment." Experimental results show: when the packing bag of the oxygen concentration 1%, the rate of microbial growth and reproduction of the sharp decline in oxygen concentration of 0.5%, the majority of micro-organisms will be inhibited and stop breeding. (Note: Vacuum packaging can not inhibit the enzyme reaction of anaerobic bacteria to multiply and cause food spoilage and discoloration, it needs to integrate with other complementary methods, such as refrigeration, freezing, dehydration, heat sterilization, irradiation sterilization, microwave sterilization, salt pickled, etc..)

Vacuum oxygen removal in addition to inhibit microbial growth and reproduction, another important function is to prevent food oxidation, due to fats and oils in foods rich in unsaturated fatty acids, oxidation by the role of oxygen, so that food than usual, and metamorphic. In addition, the oxide also makes vitamin A and vitamin C loss, food coloring in the role of volatile substances by oxygen, so the color darker. Therefore, deoxygenation can prevent food deterioration, maintaining its color, smell, taste and nutritional value.

Inflatable vacuum packaging vacuum packaging major role in addition to the oxygen removal with durability features, there is also the compressive strength, gas barrier, preservation role, can more effectively make long-term to maintain the original food color, flavor , taste, shape and nutritional value. In addition, many food not suitable for vacuum packaging, which must be vacuum packed inflatable. Fragile foods such as crisp, easy caking of food, easy deformation of the oil away food, there will be sharply higher hardness of edges, or punctured bags of food. Inflated by vacuum packaging of food, the packaging bag filling pressure is greater than the external atmospheric pressure bag can effectively prevent the food under pressure crushing distortion, does not affect the appearance of bags and printed decoration.

Inflatable packaging in a vacuum and then vacuum filled with nitrogen, carbon dioxide, oxygen single gas or 2? Three kinds of gas mixture. Which are inert nitrogen gas, from filling, to maintain a positive pressure bag to prevent the bags outside air into the bag, food plays a protective role. Carbon dioxide gas can dissolve in fats or water to form weak carbonic acid, to inhibit mold, bacteria, and corruption activity. Oxygen inhibits the growth of anaerobic bacteria breeding, keeping fruits, vegetables and fresh color, high concentrations of oxygen can maintain its bright red of fresh meat.

Vacuum packaging Cured products: sausage, ham, bacon, duck, etc.; pickled vegetables: mustard, dried radish, turnip, pickles, etc.; bean products: tofu, vegetarian chicken, red bean, etc.; cooked food products: chicken, duck, sauce beef; convenience food: rice, instant noodles wetlands, ready food, etc.; soft canned: Shimizu bamboo shoots, canned fruit, rice puddings and so on.

Vacuum packed inflatable Tea, nuts, Guazi Ren, pork floss, etc.; fried potato chips, puffed food, fruit and other vegetable chips; Cake, moon cake, etc.; all kinds of powder, food additives; a variety of native products, valuable Chinese herbal medicines; the kinds of dehydrated vegetables.

Vacuum packaging or vacuum packaging used inflatable three-layer composite films or composite films made of thin aluminum triangular sealing bags, composite film thickness is usually in the 60? 96 m between the inner layer which is heat sealing layer, the need for a good seal, thickness in the 50? 80 m between the outer sealing layer, the need for good air tightness and printability, a certain intensity, the thickness of the 10? 16 m between. Common polyethylene film inner layer composite substrate (PE), such as high temperature with high temperature cooking bags are polypropylene (CPP), outer layer oriented polypropylene substrate used (OPP), polyester (PET), nylon (PA) etc. . Some foods such as tea, milk and some other high-fat food, packed with light resistance, to prevent the effects of food by changing the color of light, smell and taste, which is in between the inside and outside the two-matrix composite layer of very thin aluminum foil (AL), the air tightness has also been strengthened.

Vacuum or vacuum packing machine commonly used inflatable cavity and the outside-type two kinds of models. Chamber vacuum packaging machine is divided inflatable vacuum packaging machine and packaging machine. Outside pumping vacuum packing machine has the inflatable packaging and vacuum packaging, and several other functions, so called multi-functional modified atmosphere packaging machine. Buy packaging materials packaging machine according to the shape required, the size of packing capacity, production volume, the manner in which a combination of factors to consider packaging the best consultation before purchasing.

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