Molding Process
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Internal and external lubricant balance out of balance
Problem Phenomenon
Over- or under-plasticization, products sticky or rough
Cause Analysis
Too much internal lubrication, poor plasticization; too much external lubrication, rough surface
Solution
Adjust internal/external lubricant ratio, build torque rheology curve
Key Takeaway
Lubrication balance is the essence of PVC processing
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