Material Analysis
7 visualizações
Pockmarks/pinholes on product surface
Fenómeno do problema
A large number of tiny holes or pits appear on the surface, with rough hand feel, seriously affecting appearance
Análise das causas
Dispersed phase particles are too large, forming defects on the product surface; gas entrained during melt filling is not compacted; additive decomposition
Solução
Improve the dispersion shear effect of the screw mixing section; reduce injection speed to reduce gas entrainment; increase holding pressure and extend holding time by 50%
Conclusão principal
Surface pinhole defects originate from insufficient dispersion and gas entrainment
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!