As a seasoned supplier of tissue making machines, I understand the importance of keeping these complex pieces of equipment running smoothly. Tissue making machines are the backbone of the tissue production industry, whether it's for Paper Towel Making Machine, Toilet Paper Roll Making Machine, or Toilet Roll Making Machine. In this blog, I'll share some insights on how to troubleshoot common problems that may arise in a tissue making machine.
1. Poor Paper Quality
One of the most common issues faced in tissue production is poor paper quality. This can manifest in various ways, such as uneven thickness, rough texture, or inconsistent softness.
Uneven Thickness
- Possible Causes: Uneven pressure distribution in the pressing section, worn-out rollers, or improper adjustment of the headbox.
- Troubleshooting Steps: First, check the pressure gauges on the pressing section to ensure that the pressure is evenly distributed across the width of the paper. If the pressure is uneven, adjust the pressure settings accordingly. Next, inspect the rollers for signs of wear and tear. Worn-out rollers can cause uneven pressure and affect the paper thickness. Replace any damaged rollers. Finally, examine the headbox to make sure that the pulp is being evenly distributed onto the forming wire. Adjust the headbox settings if necessary.
Rough Texture
- Possible Causes: Low-quality pulp, improper refining of the pulp, or a dirty forming wire.
- Troubleshooting Steps: Start by evaluating the quality of the pulp. Make sure that the pulp meets the required specifications in terms of fiber length, strength, and cleanliness. If the pulp quality is poor, consider using a different source of pulp or improving the pulp preparation process. Check the refining process to ensure that the pulp is being properly refined. Over - refining or under - refining can result in a rough texture. Adjust the refining parameters as needed. Additionally, clean the forming wire regularly to remove any debris or contaminants that may be causing the rough texture.
Inconsistent Softness
- Possible Causes: Incorrect chemical additives, improper drying conditions, or variations in the fiber composition.
- Troubleshooting Steps: Review the chemical additives used in the tissue production process. Make sure that the softening agents are being added in the correct proportions and at the right stages of the process. Adjust the chemical dosing system if necessary. Check the drying conditions, including the temperature and humidity levels in the dryer section. Inconsistent drying can lead to variations in softness. Optimize the drying parameters to ensure uniform drying. Analyze the fiber composition of the pulp to ensure that it is consistent. Variations in fiber length, type, or blend can affect the softness of the tissue.
2. Machine Vibrations
Excessive machine vibrations can not only affect the quality of the paper but also cause damage to the machine components and reduce the machine's lifespan.
Possible Causes
- Loose bolts or fasteners, misaligned rollers, unbalanced rotating parts, or a worn - out motor.
Troubleshooting Steps - Conduct a visual inspection of the machine to check for any loose bolts or fasteners. Tighten all the bolts and fasteners to the recommended torque settings. Next, use alignment tools to check the alignment of the rollers. Misaligned rollers can cause vibrations and uneven wear. Adjust the roller alignment as needed. For unbalanced rotating parts, such as pulleys or shafts, use a balancing machine to correct the imbalance. If the motor is suspected to be the cause of the vibrations, inspect the motor for any signs of damage or wear. Check the motor bearings and belts. Replace any faulty motor components.
3. Paper Breakages
Paper breakages can be a major headache in tissue production, leading to downtime and reduced productivity.
Possible Causes
- Low paper strength, improper tension control, a damaged forming wire or press felts, or a blockage in the pulp flow.
Troubleshooting Steps - Evaluate the paper strength by conducting strength tests. If the paper strength is low, adjust the pulp composition, refining process, or chemical additives to improve the strength. Check the tension control system to ensure that the paper is being pulled through the machine with the correct tension. Incorrect tension can cause the paper to break. Adjust the tension settings as required. Inspect the forming wire and press felts for any signs of damage, such as holes or tears. Replace any damaged components. Finally, check the pulp flow system for any blockages. Clean the pipes, valves, and pumps to ensure a smooth flow of pulp.
4. Jammed Rollers
Jammed rollers can halt the production process and cause significant delays.
Possible Causes
- Foreign objects in the rollers, excessive build - up of pulp or debris on the rollers, or a mechanical failure in the roller drive system.
Troubleshooting Steps - Stop the machine immediately when a roller jam is detected. Do not attempt to remove the jam while the machine is running. First, try to identify and remove any foreign objects that may be causing the jam. This may require disassembling some parts of the machine. Use appropriate tools to carefully remove the foreign objects. Next, clean the rollers to remove any pulp or debris build - up. Use a cleaning solution and a soft brush to clean the rollers thoroughly. If the jam is due to a mechanical failure in the roller drive system, such as a broken belt or a damaged gear, replace the faulty components.
5. Electrical Issues
Electrical problems can disrupt the normal operation of the tissue making machine and pose a safety risk.
Possible Causes
- Faulty electrical connections, a malfunctioning control panel, or a damaged motor controller.
Troubleshooting Steps - Start by checking all the electrical connections for loose or corroded wires. Tighten any loose connections and clean or replace any corroded wires. Use a multimeter to test the electrical continuity and voltage at various points in the circuit. If you suspect a problem with the control panel, check the display and the input/output signals. Reset the control panel if necessary. If the issue persists, consult the machine's electrical schematic and use diagnostic tools to troubleshoot the control panel further. For a damaged motor controller, check the controller for any error codes. Refer to the manufacturer's manual for instructions on how to diagnose and repair the motor controller. In some cases, it may be necessary to replace the motor controller.
Conclusion
Troubleshooting common problems in a tissue making machine requires a systematic approach and a good understanding of the machine's components and processes. By regularly inspecting the machine, following proper maintenance procedures, and quickly addressing any issues that arise, you can minimize downtime, improve the quality of the tissue produced, and extend the lifespan of the machine.
If you are experiencing persistent problems with your tissue making machine or are considering purchasing a new machine, we are here to help. Our team of experts has extensive experience in tissue machine technology and can provide you with the support and solutions you need. Whether you are looking for a Paper Towel Making Machine, Toilet Paper Roll Making Machine, or Toilet Roll Making Machine, we can assist you in finding the right equipment for your needs. Contact us to start a conversation about your tissue production requirements and let's work together to optimize your production process.
References
- "Tissue Paper Manufacturing Technology" by John Smith
- "Troubleshooting Guide for Paper Machines" published by the Paper Industry Association
- Manufacturer's manuals for tissue making machines