1. Locate the Film Roll Bracket Find the installation position of the film roll of the wrapping machine, which is usually on the "film rack" at the bottom or side of the equipment and is supported by a rotatable mandrel (also known as the "film reel"). Common Structure: The mandrel may be equipped with an expanding chuck, a spring buckle, or a knob-type fixing device. Loosen the Old Film Roll Expanding Chuck Type: Rotate the knob at the end of the mandrel counterclockwise to make the chuck shrink, and then the old film roll can be removed. Spring Buckle Type: Press or open the buckle, and pull the old film roll out from the mandrel. Knob Fixing Type: Loosen the fixing knobs at both ends of the mandrel, and remove the old film roll (for some equipment, the baffle on one side may need to be removed first). Remove the Remaining Film If there is remaining film on the old film roll, cut it off and clean the remaining part to avoid it getting wrapped around the equipment. 2. Install the New Film Roll Correct Installation Direction Film Roll Direction: Ensure that the winding direction of the film is correct (pull the film out from the outside of the film roll, not the inside). Usually, there will be an arrow mark "Pull Direction" or "Outward" on the film roll to ensure that the film is unwound from the outside. Align the Center: Put the new film roll on the mandrel, and adjust the position to align the center of the film roll with the center of the mandrel to avoid the film shifting during winding due to eccentricity. Fix the New Film Roll Expanding Chuck Type: After putting the film roll on the mandrel, rotate the knob at the end clockwise to make the chuck expand and fix the film roll. Spring Buckle Type: After pushing in the film roll, fasten the buckle to ensure that the film roll cannot shake left and right. Knob Fixing Type: Install the baffles on both sides and tighten the knobs to fix the position of the film roll. Pull out the End of the Film Pull out the end of the film from the outside of the film roll, with a length of about 50-100 cm, which is used to be fixed on the goods or the "film clamping device" of the wrapping machine later (for some equipment, the end of the film needs to be inserted into the slot of the film clamping mechanism). 3. Adjustment and Testing Check the Tension of the Film Roll Manually pull the film to confirm that the tension is moderate (too loose will easily cause the film to wrinkle, and too tight may break the film). If the equipment has a tension adjustment knob (usually near the film rack), rotate it clockwise to increase the tension and counterclockwise to decrease the tension, and adjust it according to the packaging requirements (for example, fragile items require low tension, and heavy items require high tension). Fix the Starting End of the Film Stick the end of the film on the top of the goods or the film clamping device of the wrapping machine (such as the film clamping arm or the adhesive roller), and ensure that the starting position is aligned to avoid shifting during winding. The above is the method of replacing the film roll of the wrapping machine summarized by YUPACK for you. For more information about the wrapping machine, you are welcome to continuously follow the official website of Qingdao YUPACK: www.yupack.com
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