Yunfeng is a plastic bag making machine and film blowing machine manufacturer in China. 
WeChat/Whatsapp： +86 13780172923
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Yunfeng is a plastic bag making machine and film blowing machine manufacturer in China. WeChat/Whatsapp： +86 13780172923
Following the formal start of production, the film blowing machine in the factory workshop essentially continued operating at full speed to meet the company's planned output. There will be significant body loss while the film-blowing machine operates at full load. Without regular and thorough maintenance, the film-blowing machine's body is prone to rust and other issues that may last for years. Now that you're a technician for a blown film extruder, what are the best practices for routine maintenance? Let's see.
Basic Maintenance Checks
1. Check the machine's temperature every half an hour to ensure it is within the acceptable range. If the temperature is too high or too low, change the setting promptly to ensure the machine's regular functioning and the product's quality.
2. Take a few moments now and then to check the Film Blowing Machine's resistance speed. Notify the control promptly if the speed is determined to be abnormal. This is also important in regulating the final film's thickness and quality.
3. Verify that the folding diameter is up to par and that the modified film thickness is consistent.
4. Verify the pressure in the cylinder that stores air. Reaching the standby pressure is the desired level of pressure, which should not be too high.
5. Be sure the mixer is running smoothly, the raw material ratio is correct, and the mixture is homogeneous.
6. See whether there are any contaminants in the raw materials. 6. Caution is required at this stage. The blown film extruder's critical internal components are vulnerable to damage and product quality degradation caused by hard objects and impurity contamination of the raw materials.
7. Before starting the machine, check the lubricating oil in the air compressor cylinder and reducer. If it is low, supply it promptly to prevent burnout and abnormal heating during operation.
8. Check the temperature and operational state of every motor and heating device in the whole machine. They need to keep track of the time and locate an appropriate moment to halt the unit for processing and correction if issues are detected.
Cleaning Methods
Resin Method
One approach is using a resin cleaner, such as epoxy or polyester resin, to wipe off the machine. The decontamination machine or film extrusion of new machinery often uses this procedure for a while. The technique may be employed because there are a few things that happen throughout the process: materials stay on the screw or screw, the film extrusion speed of materials becomes sluggish, and there is a great variety in color change.
After the resin has been cleaned, the next step is to add the PVC resin that will be made, together with the appropriate external lubricant and calcium powder, to clean the machine even more. After it is deemed clean, the extrudate may be officially put into production.
Non-Resin Method
Materials with a high specific gravity and crushing strength are used in this process. These materials include rice, maize, sawdust, and toilet paper. The PVC resin that is connected to the outermost layer of the screw and the screw barrel is removed by the friction between these substances and the film extrusion when it is heated to the typical film extrusion temperature.
According to experience, the cleaning machine works better with rice because of its strong friction force and firm husks. It is important to open the screw after cleaning the machine using this procedure to inspect its condition. Generally, before making any kind of formal product, you need to clean the machine using the PVC resin cleaning material formula described above.
Manual Cleaning (Complete Cleaning Method of Screw and Barrels)
To remove the readily detachable material while it is hot, the screw is either manually or automatically pulled out once the film extrusion reaches the operating temperature. Once cooled, it is soaked in an organic solvent tank containing acetone or cyclohexanone. The screw's molten attachment is manually removed when it melts and expands. The amount of adherents and gel thickness determine the screw's immersion time.
Consumption steel or stainless steel pipes with a diameter that is slightly bigger than the screw diameter as immersion tanks with one end welded sealed to decrease solvent consumption and make container sealing easier. It is important to follow certain safety protocols while handling containers used for soaking screws: keep the container in a cold, dry area away from any potential heat sources or electrical outlets; close the opening to avoid solvent volatilization; and paste a safety mark on the container.
Conclusion
Maintenance is no doubt a crucial part of the upkeep of your film blowing machine. However, investing in quality blown film extruder is also important and comes before the maintenance stage. To make sure that your machines will run properly in the long term, you need to buy them from reputable manufacturers like Yunfeng. With decades of experience, our manufacturing professionals are at the top of the industry worldwide.
