Injection Molding
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HDPE injection molded product color fading
Problem Phenomenon
Color masterbatch colored HDPE parts have uneven color or fading.
Cause Analysis
Uneven color masterbatch dispersion, insufficient temperature resistance (high temperature discoloration), or insufficient light fastness level.
Solution
①Increase back pressure for dispersion; ②select temperature-resistant color masterbatch; ③select light-fast color masterbatch for outdoor parts; ④premix uniformly.
Key Takeaway
For color fading, check the three properties: dispersion, temperature resistance, light fastness.
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