PMMA Injection Uneven Melt Temperature

Problem Phenomenon

Local yellow streaks, uneven transparency.

Cause Analysis

Uneven plasticization, hot runner temperature deviation.

Solution

①Hot runner point-by-point calibration; ②Stabilize back pressure; ③Clean dead corners.

Key Takeaway

Temperature uniformity = transparency uniformity.

PMMA; melt temperature; hot runner; uniformity

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