Extrusion & Post
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LDPE '2079851475616104452 Mold Sticking
Problem Phenomenon
Soft LDPE parts are strained and deformed during demolding.
Cause Analysis
LDPE is soft and easily stretched and deformed during ejection; small draft angle and poor cavity polishing aggravate it.
Solution
①Increase draft angle; ②polish the cavity; ③reduce holding pressure; ④extend cooling to improve rigidity; ⑤enlarge ejection area.
Key Takeaway
Soft material demolding = draft angle + polishing + ejection area.
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