Production & Quality
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EMA surface blooming
Fenómeno do problema
White frost-like low molecular substances exude on EMA product surface, affecting appearance
Análise das causas
Low molecular components in EMA migrate to the surface and exude during storage; lubricant or plasticizer supersaturation exudation
Solução
1) Select high molecular weight EMA to reduce low molecular substances; 2) Reduce lubricant addition to a reasonable level; 3) Clean the product surface and then test to identify the source
Conclusão principal
Blooming is caused by low molecular migration and exudation; selecting high molecular weight grade is fundamental
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