Troubleshooting & Solutions
Mold Fouling in PU Production: Causes and Fixes
In continuous polyurethane (PU) foam production, mold cleanliness is a critical factor that directly impacts product appearance, production efficiency, and overall manufacturing cost. Whether in shoe soles, automotive interior integral skin parts, seating cushions, or industrial components, manufacturers inevitably face a common challenge at scale — **mold fouling**.
Once deposits accumulate on the mold surface, they lead to difficult demolding, increased defect rates, and more frequent downtime for cleaning. Over time, this disrupts production flow and affects delivery reliability.
This article provides a systematic analysis of the root causes of mold fouling in PU production and offers practical, industry-proven solutions to help manufacturers achieve **stable demolding, lower defect rates, and extended mold life**.