Injection Molding
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Color Difference in PCTG '2079851475616104452
Problem Phenomenon
Color differences occur between batches of PCTG colored products or within the same batch.
Cause Analysis
The addition amount of color masterbatch fluctuates or is unevenly dispersed, the regrind ratio is inconsistent, and processing temperature fluctuations affect the pigment stability.
Solution
Use a metering pump to accurately add the color masterbatch; stabilize the processing temperature and the regrind ratio; use heat-resistant pigments.
Key Takeaway
PCTG color difference requires process stability and a precise color matching system.
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