Running a plastic bag manufacturing factory in busy industrial hubs like Lagos, Ota, or Onitsha requires your machinery to run without unexpected stops. When your production line is running smoothly, your business profits increase. However, one of the most common issues that slows down Nigerian factories is when the plastic film begins to wrinkle, fold, or drift to one side on the rubber rollers. This film deviation on the bag making machine leads to rejected bags, wasted raw materials, and lost production hours. Understanding why your bag making machine behaves this way and training your team to handle it will keep your factory efficient and competitive.

When your blown film starts moving to the left or right instead of feeding straight into the sealing section, the problem usually stems from uneven tension or poorly aligned rollers on the bag making machine. In many Nigerian factories, operators lack structured technical training and often skip checking the alignment when loading a new heavy film roll onto the bag making machine. If one side of the rubber roller exerts more pressure than the other, the plastic film will naturally pull toward the tighter side. To solve this deviation, your machine operators must check the air pressure of the pneumatic cylinders or manually calibrate the spring tension on both ends of the bag making machine feeding roller. Ensuring that both sides have identical gripping pressure forces the film to travel down the exact center of the bag making machine.

Film wrinkling on the feeding section happens when the automatic or manual tension control is set incorrectly for the specific thickness of your material on the bag making machine. If your local operator sets the unwinding tension too loose, the film will sag and create large folds as it passes over the guide bars of the bag making machine. If the tension is too tight, the film stretches unevenly, creating small, sharp wrinkles that ruin the final heat-sealing quality. When changing from high-density polyethylene to low-density polyethylene film on your bag making machine, your operators must reset the magnetic powder brake or manual tension knobs. The goal is to keep the film completely flat like a sheet of paper without overstretching the material before it hits the welding line of the bag making machine.

Most mechanical errors on the factory floor happen simply because the team does not understand how a bag making machine handles the relationship between film thickness and roll alignment. When you employ new operators, they often throw a new heavy film roll onto the unwinding shaft without aligning it to the center line of the bag making machine. Creating a simple visual center mark on the floor or on the machine frame helps operators load the film roll perfectly straight into the bag making machine every single time. Investing an hour to teach your operators how to test tension by feeling the film with their hands will prevent hundreds of kilograms of premium material from ending up in the waste bin.

If your current machinery requires constant manual adjustment every ten minutes, your tension control components or rubber rollers are likely worn out. Upgrading to a modern bag making machine equipped with an automatic web guiding system or high-quality pneumatic expansion shafts can save your business thousands of Naira in daily waste. Contact our engineering support team today to discuss upgrading your plastic bag making machine setup. We provide factories across West Africa with durable bag making machine options, reliable spare parts, and practical technical guidance to ensure your production lines run smoothly twenty-four seven.