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Iupilon Automotive Door Handle Grades

Injection Molding

1. Pre-Drying
Before injection molding, it's necessary to dry the pellet at 120 ℃, 4~5 hours. When the pellet is dried
by heat circulated oven, the height of the pellet layer should be less than 30mm .

2. Cylinder Temperature
Appropriate resin temperature is 270~280 ℃. The cylinder temperature at the nozzle and front zone is 270~280℃,center and rear zone is 260~270℃ is recommended.

3. Mold Temperature
A mold temperature of 80~90℃ is in the general case.

4.Injection Pressure and Holding Pressure
An injection speed should be adjusted in the range of infection pressure between 100 and 150 MPa.
Holding pressure should be switched at the point of 80~90% of cavity to obtain less residual stress while molding. Holding pressure, which is 50~70% of injection pressure is in the general case.

5.Injection speed
When a hot runner and long nozzle is utilized, low injection speed is recommended at the point of the gate and around the gate to avoid gas generation in the molded parts. Burning of the molded parts sometimes causes in case of a mold whose gas vent is not sufficient.

6. Screw rotation and Screw back pressure?
A screw speed of 50 ~100 rpm is in the general case.
Screw back pressure is recommended 1~3% of injection pressure.


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Product Info.

  • ポリカーボネート樹脂(PC樹脂)ユーピロンノバレックスザンター
  • ポリブチレン テレフタレート樹脂 (PBT樹脂) ノバデュラン
  • ポリアセタール樹脂(POM樹脂)ユピタール
  • 変性ポリフェニレン エーテル樹脂(m-PPE樹脂)ユピエースレマロイ
  • 高性能ポリアミド樹脂(PA樹脂)レニー
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