Machines like packaging machines must be reliably grounded to protect personal safety. Each machine comes with a power cable that is connected to the power supply when it leaves the factory. The end lead of the cable has an identification symbol for the power supply and must be connected correctly. Violating regulations may cause electric shock.

The shrink packaging machine and the winding machine both consume a large amount of power, so the input power must be greater than the nominal power on the shrink machine nameplate, otherwise it is easy to burn out the circuit or electrical components.

There are two ways to wrap items with flat film: single flat film and double flat film. The film should be wider than the object, using a double flat film, that is, wrapping it with two films on top and bottom. While the previous packaging is completed with sealing and cutting, the two films are sealed together. Then, the product is pushed into an upright film by machine or hand, and the sealing and cutting mechanism falls in place. The other side of the product is sealed and cut off. The product wrapped in the film shrinks after heat shrinkage, and the two ends of the packaging shrink to form an elliptical opening. When using a single flat film, First, unfold the flat film and feed the wrapped product towards the middle of the film to form a horseshoe shaped wrap, then heat seal and overlap the seal.

When using the shrink packaging machine, first place the products to be shrunk together. After the first pass, there will be film falling on the items to be packaged, but the packaging effect is not very good at this time. After the second pass, the effect will be very good. The plastic film packaging on the outside of food and beer has a very beautiful appearance. The heat shrink machine can also be paired with a disinfection and drying machine to form a complete set of equipment for wrapping bowls and chopsticks.