Molding Process
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White Marks Appearing on PBT Parts After Solvent Wiping
Fenómeno del problema
White marks appear on PBT products after wiping with alcohol, etc.
Análisis de la causa
The solvent slightly erodes the PBT surface, producing surface roughening or precipitation of low-molecular substances, showing white.
Solución
Avoid wiping with solvents; use a neutral cleaning agent; anneal the product to reduce stress.
Conclusión clave
White marks from solvent wiping of PBT are a manifestation of surface sensitivity.
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