Injection Molding
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Material Shortage of LDPE Injection Molded Products
Problem Phenomenon
Material shortage at thin-wall ends.
Cause Analysis
Insufficient injection speed/pressure, poor venting, and thin wall thickness.
Solution
①Increase speed and pressure; ②vent; ③enlarge the gate; ④raise mold temperature.
Key Takeaway
For material shortage, increase speed first, then check venting.
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