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Vacuum packaging machine

Vacuum packing or vacuum packaging is a method of packaging that removes air from the package prior to sealing. It involves (manually or automatically) placing a perishable food in a plastic film package, removing air from inside, and sealing the package. Shrink film is sometimes used to have a tight fit to the contents. The intent of vacuum packing is usually to remove oxygen from the container to extend the shelf life of foods and, with flexible package forms, to reduce the volume of the contents and package. ... Single Vacuum Chamber Machines. Single chamber sealers require the entire product to be placed within the machine. Like external sealers, a plastic bag is typically used for packaging. Once the product is placed in the machine, the lid is closed and air is removed. Then, there is a heat seal inside the chamber that will seal the bag, after sealing the bag the chamber is refilled with air by the automatic opening of a vent to the outside. This oncoming pressure squeezes all remaining air in the bag. The lid is then opened and the product removed. Chamber sealers are typically used for low-to-medium-volume packaging, and also have the capability to vacuum seal liquids. [Vacuum packing. Wikipedia]
Vacuum packaging machine
Vacuum packaging machine, vacuum packer,