How to find the cause of quality problems in non-woven products
When a problem occurs, we should analyze the problem from the aspects of man, machine, material, and method, find the cause of the problem, find a countermeasure for the cause, record it, and check the implementation every time it is produced.
1. Let the production-related personnel know that there can be no color difference, let them analyze the causes and countermeasures, and check and control during the production process.
2. Whether there is any problem in the process of adding color masterbatch to the equipment, the color masterbatch mixer is screw type, whether there is a difference between low speed and high speed, it may be inaccurate when it is just turned on. Whether the equipment has been corrected, whether it is actually added in the same proportion each time.
3. Masterbatch quality assurance, UV-resistant pigments, the same color content. The manufacturer must ensure that it is the same formula and the same brand every time. If something goes wrong we will make a claim.
4. There must be samples of standard colors. Every time the machine is turned on, take samples and compare the samples. Only when there is no problem can you start making products. The same is true for downtime transitions. During the production process, we should pay attention to observe the color changes, deal with the problems in time, and cut off the problematic ones. The position where the color masterbatch is added should be cleaned up to prevent debris from falling into the machine and blocking it. Products with different colors of the two dies will also be rejected.
5. The color difference can be seen from the side of the big roll that has just come down, so it is necessary to check and analyze the problem. If I look at the color difference from the side, I will refuse to accept the goods, tell the production and quality management personnel, something goes wrong and we will make a claim.
6. Add 2% khaki masterbatch, the parameter on the equipment screen is 7, the same parameter is guaranteed for the next production, and must not be changed.
7. The recycling input of scrap material, the two extruders should be the same, and the scrap material produced by this product should be added.
8. Standard sample cloth should be required at the production site.
