How to fix T-shirt Bag Making Machines errors

When your T-shirt bag making machine malfunctions—for example, severe off-center cutting, weak sealing, or sudden shutdowns—production grinds to a halt, and frankly, this can cause significant financial losses. The key isn't finding a one-size-fits-all solution; you need targeted troubleshooting. First, carefully check the power supply and the materials you're using. Then adjust the critical components—tension control, heat sealing device, and all other key equipment. Finally, check the electrical system. If the problem persists, Lingfeng's customized maintenance plans and CE-certified parts are your best option. Below are the most common problems and practical steps you can take to resolve them.

Let me give you a real-world example: a snack packaging factory found that their machine was producing crooked bags—some edges were curled like a crumpled old map. It turns out this is quite common when the tension control fails or the guide rollers are not properly aligned. We once conducted a comparative test, and machines equipped with Lingfeng's adaptive tension system had a 92% lower misalignment rate than standard models. That's a huge difference.

Here's how to fix it: First, check the film roll—uneven thickness is often the culprit. Then calibrate the tension control: tighten any loose springs or adjust the air pressure. Next, realign the guide rollers using a laser level to ensure they are perfectly parallel. Don't forget to clean the photoelectric sensors—their lenses often accumulate dust, which can blind the machine's "eyes" and prevent proper alignment.

For weak sealing problems, the following methods are effective: First, check the heating element for buildup—remove any buildup with a brass brush. Then adjust the sealing temperature and pressure according to the material you are using. HDPE requires 120-150℃, but what about biodegradable PLA? You'll need 160-180℃. If the sealing blades are worn, replace them—Lingfeng's imported alloy blades last three times longer than ordinary blades. And use a digital thermometer to ensure the temperature sensor is working correctly.

Machine unexpectedly shutting down? In most cases, it's an electrical fault. We encountered a similar case where a hardware store's machine repeatedly shut down during operation—our technicians eventually traced it to a tripped PLC switch. The advantage of LingFeng machines lies in their built-in fault code display, so you don't have to guess the cause of the malfunction.

Quick Preventive Maintenance Tips: Follow LingFeng's 500-hour maintenance checklist. Lubricate the drive chain, clean the material hopper, and check all sensors. User feedback indicates that doing so can reduce downtime by 67% – definitely worth a try.

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