[Chinese Packaging Network News] vacuum packaging machine is: After the bag into a low vacuum, immediately sealed automatically, due to the high degree of vacuum in the bag, the residual air is minimal, inhibit the proliferation of bacteria and other microorganisms, to avoid oxidation of the goods, mildew Change and corruption, at the same time for certain soft goods, after packaging by automatic vacuum packaging machine, can reduce the packaging volume, easy to transport and store.
The principle of desktop vacuum packaging machine is plastic composite film or plastic aluminum foil composite film packaging materials, solid, liquid, powder, paste-like food, food, fruit, pickles, preserved fruit, chemicals, electronic components, precision instrumentation, Rare metals such as vacuum packaging or vacuum inflatable packaging. A: The classification of vacuum packaging machine
Can be divided into desktop vacuum packaging machine, single-room vacuum packaging machine, dual-chamber vacuum packaging machine, vertical vacuum packaging machine, home vacuum packaging machine, pumping vacuum packaging machine and so on a variety of vacuum packaging machine.
II: Work Flow of Vacuum Packing Machine
1. Vacuum: The vacuum chamber is covered and the vacuum pump works. The vacuum chamber starts to vacuum. The vacuum inside the packaging bag is at the same time. The vacuum gauge pointer rises to the rated vacuum level (controlled by the time relay ISJ). The vacuum pump stops working and the vacuum stops. While working in the vacuum, the two-position three-way solenoid valve IDT works, heat-sealed the air chamber vacuum, and the hot-pressing frame remains in place.
2. Heat sealing: IDT is broken, the outside atmosphere enters the heat-sealing air chamber through the upper air inlet hole, and the pressure difference between the vacuum chamber and the heat-sealing air chamber is utilized, and the heat-sealed air chamber is inflated to make it under the hot press rack. Move, press the bag mouth; At the same time, heat sealing transformer work, start sealing; At the same time, the time relay 2SJ work, after several seconds of action, heat seal end.
3, return gas: two two-way solenoid valve 2DT pass, the atmosphere into the vacuum chamber, the vacuum gauge pointer back to zero, hot pressing frame reset by reset spring, vacuum chamber open cover.
4. Cycling: Move the above vacuum chamber to another vacuum chamber, that is, enter the next working process. The left and right chambers work alternately and reciprocally.
Three: The characteristics of vacuum packaging machine
1. For liquid and high-viscosity materials, they can be automatically bagged and filled with high precision at high temperatures. (suitable for external vacuum packaging machine)
2, using extrusion exhaust packaging method. (Inside suction vacuum packaging machine)
3, material corrosion resistance, fully meet the requirements of food hygiene and corrosion.
4, the host structure is solid, a variety of text corresponding to the man-machine interface, simple operation.
5, can be optimally combined with various forms of filling system to obtain the best packaging effect