Injection Molding
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Oil spots on EAA injection molded products
Problem Phenomenon
Oil spots appear on the surface of EAA injection molded products after demolding, release agent residue or lubricant exudation
Cause Analysis
Excessive or unevenly distributed release agent spraying; EAA internal lubricant stearic acid type exudes to the surface; mold lubricating oil seeps into the cavity
Solution
1) Reduce the amount of release agent or switch to dry film release agent; 2) Use internal lubricant instead of external release agent; 3) Seal the mold lubrication parts to prevent oil from seeping into the cavity; 4) Clean the product surface, remove the oil spots and then detect the source
Key Takeaway
Oil spots are caused by external sources of release agent and lubricant; reducing release agent and sealing mold lubrication are the key
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