Introduction to the working process and characteristics of vacuum packaging machine

Introduction to the working process and characteristics of vacuum packaging machine

Introduction to the working process and characteristics of vacuum packaging machine

Vacuum packaging machine: After evacuating the packaging bag to a low vacuum, it will be automatically sealed immediately, Due to the high degree of vacuum in the bag, there is very little residual air, which inhibits the reproduction of bacteria and other microorganisms, and avoids oxidation, mildew and corruption of items, At the same time, for some soft items, after being packaged by a fully automatic vacuum packaging machine, the packaging volume can be reduced, which is convenient for transportation and storage.

The principle of the desktop vacuum packaging machine is to use plastic composite film or plastic aluminum foil composite film as the packaging material. Vacuum packaging or vacuum inflatable packaging for solid, liquid, powder, and paste foods, grains, fruits, pickles, preserved fruits, chemicals, electronic originals, precision instruments, rare metals, etc.

1. Classification of vacuum packaging machines:

Can be divided into: desktop vacuum packaging machine, single chamber vacuum packaging machine, double chamber vacuum packaging machine, vertical vacuum packaging machine, household vacuum packaging machine, external pumping vacuum packaging machine and many other vacuum packaging machines.

2. Working process of vacuum packaging machine:

• Vacuum: he vacuum chamber is closed, the vacuum pump works, the vacuum chamber starts to vacuum, the bag is vacuumed at the same time, the pointer of the vacuum gauge rises, reaches the rated vacuum (controlled by the time relay ISJ), the vacuum pump stops working, and the vacuum stops. While working in vacuum, the two-position three-way solenoid valve IDT works to heat seal the vacuum of the air chamber, and the heat press frame remains in place.
• Heat seal: IDT breaks, the outside atmosphere enters the heat-sealed air chamber through the upper air inlet, and the pressure difference between the vacuum chamber and the heat-sealed air chamber is used to inflate and expand the heat-sealed air chamber to make the upper heat press frame move down and press the bag mouth; At the same time, the heat-sealing transformer works, and the sealing begins; at the same time, the time relay 2SJ works, and the heat-sealing ends after a few seconds.
• Return air: Two-position two-way solenoid valve 2DT is open, the atmosphere enters the vacuum chamber, the pointer of the vacuum gauge returns to zero, the heat press frame is reset by the return spring, and the vacuum chamber is opened.
• Cycle: Move the above vacuum chamber to another vacuum chamber to enter the next working process. The left and right chambers work alternately, cyclically.

3. Features of vacuum packaging machine:

• For liquid and high-viscosity materials, high-precision automatic bag filling and packaging at high temperatures. (Suitable for external pumping vacuum packaging machine)
• Using squeeze exhaust packaging method. (Internal pumping vacuum packaging machine)
• The material has strong corrosion resistance and fully meets the requirements of food hygiene and corrosion protection.
• The main machine has a firm structure, a man-machine interface corresponding to a variety of characters, and easy operation of Atlas air compressor accessories.
• It can be optimally combined with various filling systems to obtain the best packaging effect.