![[Industry News] PP Nonwoven Industry Remains Under Pressure with Rigid Costs, Weak Demand, Low Margins and Reduced Operating Rates](https://file.cdnfile.io/upload/p/5375/image_other/2026-06/u-227394995-1191471325-fm-253-fmt-auto-app-138-f-jpeg.webp)
0102030405
Why PP fiber turns yellow?
2026-06-25
Main Causes of PP Fiber Yellowing
1
Thermal oxidation during processing
High processing temperatures accelerate oxidative degradation of polypropylene, leading to color change.
2
Catalyst residue in PP resin
Residual catalyst from polymerization can trigger continuous oxidation reactions, causing yellowing over time.
3
UV exposure
Outdoor exposure or storage under sunlight leads to photo-oxidation and color fading.
4
Improper antioxidant system
Insufficient or unbalanced stabilizer systems cannot effectively protect PP molecular chains.
5
Poor raw material stability
Low-quality or unstable PP resin increases the risk of discoloration.
🔹 How to Prevent Yellowing
- Use anti-UV and anti-oxidation masterbatch
- Neutralize catalyst residues
- Optimize processing temperature
- Improve stabilizer formulation
Conclusion
PP fiber yellowing is a combined result of processing, formulation, and environmental factors. A well-designed anti-aging and anti-UV system is essential for stable fiber quality.
Yancheng Ruize Masterbatch Co., Ltd & Jiangsu Trumps Chemical Fiber Technology Co., Ltd.
Contact: Christina Xie
Mobile: +86 13914649079
Email: ruize@risencolor.com
Website: https://www.trumpsfiber.com/
Address: Room 1706, Building 5, Financial City, No.5 Century Avenue, Yancheng, China
Mobile: +86 13914649079
Email: ruize@risencolor.com
Website: https://www.trumpsfiber.com/
Address: Room 1706, Building 5, Financial City, No.5 Century Avenue, Yancheng, China