Vacuum packaging bag first arose in the 1940s, and vacuum packaging bags are widely used to pack meat. In 1957, the predecessor company of Qingdao Advanmatch Packaging Co., Ltd. officially used vacuum packaging bags and commissioned the vacuum packaging machine. Vacuum packaged food has the following history: around 1965, vacuum packaged steamed beans, vacuum packaged snacks, steamed food and pickled food were introduced; After 1967, vacuum packaged dried fish, pickles, frozen dumplings, frozen cod fillets, steamed bread, smoked salmon, smoked salmon, coffee, hamburgers, cooked rice, rice, roast meat, high-temperature cooked food, meatballs, etc. were successively introduced. In Japan, the popularity of vacuum packaging ranks first in the world, while in western countries, except for frozen meat and frozen fish, vacuum packaging of other foods is rare.
Vacuum packaging has the following characteristics:
1.High barrier performances
The film used for vacuum packaging shall be one with good gas resistance, such as various PVDC coating films, PVDC OPP, PVDC pet, PVDC nylon, Eval film, nylon film and PET film, which are suitable for vacuum packaging bag products. Almost all sausage vacuum packaging is processed by using the composite film produced by biaxially stretched nylon film and linear low-density polyethylene. This film has a good quality guarantee period. Almost all down products, down clothes and down quilts are vacuum packed with PVDC film as raw materials, which can reduce the volume during transportation and save freight.
2. pinhole resistance
In addition to considering the barrier property of materials, the second factor in material selection and structure design is pinhole resistance. Only the material structure with excellent pinhole resistance can withstand the friction and pinholes caused by folding during filling and heat-sealing operation, transportation, storage, sales and use. Make the vacuum packaging airtight. The vacuum packaging material made of biaxial tensile nylon film and linear low-density polyethylene film produced by our company has good pinhole resistance, strong toughness and high barrier property.
Post time: Jun-27-2022