Material Analysis
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Large batch differences in melt index of blends
Problem Phenomenon
The melt index of different batches of the same formulation differs by more than 30%
Cause Analysis
Raw material resin molecular weight fluctuates between batches; the recycled material addition proportion is not fixed; granulation process parameters change
Solution
Establish a raw material incoming inspection system (controlling molecular weight fluctuation); fix the recycled material proportion and source; stabilize granulation process parameters
Key Takeaway
Melt index differences directly affect the '2079851475616104452 process window and product consistency
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