LDPE '2079851475616104452 Sink Marks

Problem Phenomenon

Depression at thick walls.

Cause Analysis

High shrinkage + insufficient compensation.

Solution

①Increase holding pressure; ②reduce material at thick walls; ③enlarge the gate; ④extend holding.

Key Takeaway

Sink mark = compensation problem.

LDPE; '2079851475616104452; sink mark; holding pressure; thick wall

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