Injection Molding
6 visualizações
Obvious surface color difference of PU
Fenómeno do problema
Different parts of PU products have varying color shades, color difference ΔE>5
Análise das causas
Uneven dispersion of color masterbatch; pigment orientation during injection causing uneven color distribution; barrel temperature fluctuation causing color change
Solução
1) Use masterbatch method for color masterbatch to ensure uniform dispersion; 2) Reduce injection speed to reduce pigment orientation; 3) Stabilize barrel temperature ±2°C
Conclusão principal
Color difference is caused by uneven dispersion and orientation; masterbatch method and stable processing are key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!