How to set the injection parameters at the beginning in mold trial
- Jussi Zhong / plastic mold expert in Shenzhen
- 2015年10月14日
- 讀畢需時 1 分鐘
How to set the injection parameters at the beginning in the plastic mold trial:
Method: Don't use hold pressure with one stage shot at the beginning
Temperature: with low resin temperature ( prevent melt resin to decompose in the barrel ) and high mold temperature at first
Pressure: injection pressure and back pressure to set low at the beginning ( prevent melt resin to decompose in the barrel and excessive resin to fill into the gap between the sliders, lifters, core, cavity)
Clamping force: set this force bigger ( prevent the molding flash )
Speed: mold open / close speed should be slow at first ( prevent the mold damaged ), stroke of the filling should be short at the beginning ( prevent the excessive resin filling )
Time: injection time is long and cooling time is also long at the beginning
To set the hold pressure after the plastic parts is full of the cavity. And adjust the hold pressure and hold pressure time from low to high
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