What are the packaging processes of stretch film vacuum packaging machine

During the packaging process, the stretch film vacuum packaging machine adopts a continuous step method, forming the lower roll of film and sealing the upper roll of film. The lower roll film is pulled in a fixed step distance, passes through the preheating zone and heating zone, is formed by air pressure, vacuum or die, and then filled with material in the filling zone. Next, enter the heat sealing area, cover the upper film downwards, and according to the packaging requirements, perform vacuum pumping or filling with protective gas treatment, and then perform hot pressing sealing. After the heat sealing is completed, the production batch and production date can be printed by spraying. Through horizontal and vertical cutting, packaging products are formed, and the cut edges are collected and cleaned by a film recycling device.