There are many practical techniques for stretch film packaging operation. Firstly, the correct wrapping method is to start from the bottom of the item and wrap it upwards in a spiral pattern. Each stretch film should cover 50% -70% of the previous circle to ensure the tightness and stability of the packaging and prevent the item from shaking during transportation. For articles with irregular shapes, the sharp edges and corners can be wrapped with cushion materials such as bubble film or foam, and then the stretching film is wound to avoid the stretching film being punctured.

Controlling the stretching force is also crucial, and the stretching degree of the stretching film should be adjusted according to the weight and shape of the item. For lighter items, the stretching degree can be controlled at 50% -80%, which can save stretch film and ensure packaging effect; For heavier items, the stretching degree can be appropriately increased to 100% -150% to enhance the fastening force of the stretching film. However, it should be noted that excessive stretching can cause the stretching film to become thinner, reduce its strength, and easily lead to rupture. Therefore, it is necessary to maintain uniform force during the stretching process to avoid local excessive stretching.

The finishing operation is equally important. When the stretch film is wrapped around the top of the item, it can be horizontally wrapped several times to fix the top opening and prevent the stretch film from loosening. Then carefully cut the stretch film with scissors or blades, with a flat cut to avoid burrs and prevent them from scratching items or personnel during subsequent handling. In addition, during the packaging process, a stretch film winding machine can be used as an auxiliary operation. The winding machine can automatically control the stretching force and winding speed, improving packaging efficiency and quality, especially suitable for large-scale packaging operations. Mastering these packaging operation skills can not only improve packaging efficiency, but also ensure the firmness and aesthetics of packaging, effectively protecting the safety of items during transportation and storage.