Extrusion & Post
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ASA Door and Window Profile Application
Fenómeno del problema
【Problem Phenomenon】Plastic-steel door and window white profiles chalk and discolor after long-term sun exposure
Análisis de la causa
ASA/PVC co-extrusion or ASA surface layer profiles have weather resistance far exceeding pure PVC; colors are rich and long-term stable; the high-end direction of door and window profiles; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solución
High-end profiles choose ASA co-extruded surface layer; ASA layer thickness according to weather resistance years; welded corner strength verification; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Conclusión clave
ASA surface layer profiles resist sun without chalking, doors and windows go high-end; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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