The low viscosity composite film is used, and the materials are placed on the tray or film of the lower formwork. In the vacuum state, the heat generated by the heating plate is sent to the vacuum chamber through the air outlet, and the low viscosity composite film is instantly heated and combined to achieve the effect of vacuum packaging. This kind of packaging is to heat and soften the film and then shrink the packaging. Therefore, there is no phenomenon that the film is punctured when packaging articles with sharp corners and hard thorns, and there is no probability of damage and air leakage.
