Nitrogen packing machine is relative to vacuum packing machine developed. The packing medium of vacuum packing machine is generally bag, and the bag or packing film bears the difference of atmospheric pressure of closed container, with good elasticity. However, if the box is packed at a certain height after vacuum, the pressure difference between the box and the outside will cause the box to be deformed after sealing after the box leaves the packing mold. Therefore, people use the air pressure in the box filled with inertial gas to balance the inside and outside pressure sealed by nitrogen filling. It is not difficult to see that the nitrogen-filled packaging machine is filled with a single nitrogen, which has the same fresh-keeping effect on food as the vacuum packaging machine.

Moreover, if the bread is packed in vacuum, it will be less beautiful. The main reason is that the bread filled with nitrogen can prevent damage and deformation. The effect of preservation is very good, therefore, bread packaging is mostly filled with nitrogen bread packaging machine.

Bread packing machine relative to other kinds of fresh packaging machine, the effect is comparable, the price is relatively low