Vacuum packaging machine
A vacuum packaging machine is a machine that can empty the air inside a container and seal the container to maintain a vacuum state.
Generally speaking, as we mentioned earlier, there are three types of vacuum packaging machines,
External vacuum sealing machine
Chamber vacuum sealing machine
Hot forming vacuum packaging machine
In the category of external vacuum sealing machines, household desktop vacuum sealing machines are very popular in daily use in home kitchens.
There are several world-renowned brands of desktop vacuum sealers, such as Food Saver, and you can also purchase cost-effective alternatives from Chinese factories online. The quality of desktop vacuum sealers made in China is also very good.
In addition to desktop vacuum sealing machines used in household kitchens, there are also vacuum packaging machines used in the food industry, which have a larger output and can meet the requirements of food stores, supermarkets, food processing plants, etc.
Vacuum packaging materials
In addition to vacuum packaging machines, you also need vacuum packaging materials, including plastic bags and thermoformed plastic films.
Plastic bag: used for vacuum sealing of external vacuum sealing machines and chamber vacuum sealing machines;
Plastic film: Thermoformed plastic film is specially made for thermoforming vacuum packaging machines, printed or unprinted.
The breathability and moisture permeability of plastic packaging materials vary with the influence of factors such as polymer molecular structure, film thickness, temperature, and humidity.
After vacuum packaging, the oxygen content in the packaging container or the concentration of each component of the mixed gas will change due to the influence of the storage environment.
The principle of selecting packaging materials is to reduce the impact on the atmospheric environment and achieve the longest shelf life.
· Vacuum packaging bags must have high barrier properties
· Foods rich in fat require plastic bags and films with high oxygen and oil resistance
· Dry grains require high moisture resistance in plastic bags and films;
· In addition, it must have high tensile strength, tear resistance, impact resistance, good chemical stability, and no chemical reaction with the food inside;
· In addition, high temperature resistance can meet the requirements of high-temperature disinfection and low-temperature storage for various products.
· Therefore, when choosing plastic bags and plastic films, we also need to make the right choice based on product characteristics. Only in this way can the quality of vacuum packaging be guaranteed.
So here is a brief introduction to vacuum packaging and related knowledge. If you have any other questions, please feel free to contact us at any time.
