Flowability

Flowability シークレット カジノ SUMIKAEXCEL PES improves greatly as the cylinder temperature, injection pressure, and wall thickness シークレット カジノ molded products increase. However, mold temperature does not have a major impact. If mold release failure, glass fiber floating or weld cracking occurs, it is recommended to increase the mold temperature to 160°C or higher.

Apparent Melt Viscosity

The apparent melt viscosity シークレット カジノ SUMIKAEXCEL PES is as follows.

Molding シークレット カジノ Relatively Thick-Walled Products

This section focuses on the flow characteristics at a wall thickness シークレット カジノ 3mm.

Effect シークレット カジノ Cylinder Temperature

When the cylinder temperature increases, the melt viscosity シークレット カジノ the resin decreases and the flowability improves. The bar flow length improves by 30 to 60% when it is set 20°C higher.

Figure 4-2-3 Temperature Dependence シークレット カジノ Bar Flow Length

Effect シークレット カジノ Injection Pressure

The bar flow length improves by 10 to 20% when the injection pressure is set 20 MPa higher. High-pressure シークレット カジノing is generally recommended, but carefully check for シークレット カジノ release defects and residual stress due to overpacking. Select appropriate conditions by setting the secondary pressure.

Figure 4-2-4 Dependence シークレット カジノ Bar Flow Length on Injection Pressure (4100G)

Effect シークレット カジノ Injection Speed

Injection speed does not have a significant effect on the bar flow length.

Figure 4-2-5 Dependence シークレット カジノ Bar Flow Length on Injection Speed (4100G)

Effect シークレット カジノ Product Wall Thickness

Flow length increases sharply with wall thickness. When the wall thickness is 1.5mm or higher, flowability can be improved 40 to 70% by increasing the wall thickness by 0.5mm.

Figure 4-2-6 Effect シークレット カジノ Wall Thickness on Bar Flow Length (4100G)

Molding シークレット カジノ Thin-Walled Products

This section describes the flow characteristics at wall thickness シークレット カジノ 0.1 to 0.7mm.

Effect シークレット カジノ Cylinder Temperature

Flowability improves as the cylinder temperature increases, but this effect decreases when the wall thickness is 0.3mm or less. Considering the effects シークレット カジノ thermal degradation, a temperature シークレット カジノ up to about 380°C is suitable.

Figure 4-2-9 Cylinder Temperature Dependence
(Thickness: 0.3mm)

Effect シークレット カジノ Product Wall Thickness

The flowability depends on the wall thickness, so please pay attention to this when designing your product.

Effect シークレット カジノ Injection Pressure

Thin-wall flowability tends to be greatly affected by injection pressure. Injection pressure シークレット カジノ at least 100MPa is recommended. However, it is required to determine the proper injection pressure by taking product appearance and residual stress into consideration.

Effect シークレット カジノ Injection Speed

Thin-wall flowability is not affected by injection speed so much. If the injection speed is too high, it may cause defects such as burns.

Effect シークレット カジノ Mold Temperature

Thin-wall flowability is not affected by シークレット カジノ temperature so much. However, it is recommended to raise the シークレット カジノ temperature to at least 160°C if problems such as sticking in the シークレット カジノ, poor surface appearance, or low weld strength occur.