Brief developing history of vacuum bag and its common classifications

Vacuum packaging technology originated in the 1940s. Since plastic film was successfully applied to commodity packaging in the 1950s, vacuum packaging technology has developed rapidly. In 1962, Ordal proposed that oxygen impermeable film could inhibit the growth of pathogenic microorganisms, and shelf life for the fresh meat with this kind of packaging could be prolonged; In 1970, Pierson et al. proposed that vacuum packaging created an "ecosystem" for selecting the type and growing level of microorganisms; In 1974, Scopa company first applied MAP (Modified Atmosphere Package, which is a package being vacuumized first and then being filled a certain proportion of mixed gas) to pack meat products; In 1986, Pesis et al. proposed that vacuum packaging is a good fresh-keeping method to maintain the quality and hardness of tomato. With the development of Commerce, the developing and popularizing of storage and preservation technology have been paid more and more attention by producers, operators and consumers. 

At present, there are many kinds of materials being used for vacuum packaging on the market, and plastic film is commonly used. Currently, vacuum bags made with plastic film are widely used, but different packed items with different requirements for vacuum bags, so now there are clear classifications for vacuum bags also. Based on the materials being used, the vacuum bags can be divided into nylon-pe laminated vacuum bags, polyester laminated vacuum bags, aluminum foil laminated vacuum bags, seven-layer co-extruded nylon-pe vacuum bags, and etc; According to the bag type, the vacuum bags can be divided into three-side sealed vacuum packaging bags, gusset vacuum packaging bags, zipper vacuum bags, and etc; Based on the manufacturing process, the vacuum bags can be divided into transparent vacuum bag, printed vacuum bag, embossed vacuum bag, and etc. According to the final use of the vacuum bags, they can be divided into clothing vacuum bag, electronic product vacuum bag, food vacuum bag, frozen food vacuum bag, fresh food vacuum bag, pillow vacuum bag, seafood vacuum bag, retort vacuum bag, and etc.