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.