Production & Quality
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MP surface blooming exudation
Problem Phenomenon
MP product surface exudes white frost-like low molecular species, affecting appearance
Cause Analysis
low molecular components in MP migrate to the surface and exude during storage; lubricant or plasticizer supersaturated exudation
Solution
1) select high molecular weight MP to reduce low molecular species; 2) reduce lubricant addition to a reasonable level; 3) clean the product surface then test the source
Key Takeaway
blooming is caused by low molecular migration exudation; selecting a high molecular weight grade is fundamental
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