The working principle of the semi-automatic heat shrink packaging machine is to use pneumatic driving force to drive the product from the loading and unloading area to the heat shrink area, and the horizontal sealing strip (pneumatic driving and temperature are electronically controlled) is cut and sealed with film At this point, the product enters the channel and begins to heat shrink This semi-automatic heat shrink packaging machine is an ideal choice for packaging small and medium-sized products.