Research Article
Experimental-Based Optimization of Injection Molding Process Parameters for Short Product Cycle Time
Table 4
Effect of process parameters on the on the product defect and the product cycle time.
| Process parameters | Warpage | Volumetric shrinkage | Comment |
| Injection speed | Opposing effect | Opposing effect | Reducing the injection speed decreases the warpage and vol. shrinkage but increases the cycle time | Cooling time | Increasing the cooling time decreases the warpage and vol. shrinkage but increases the cycle time | Packing time | Increasing the packing time decreases the warpage and vol. shrinkage but increases the cycle time |
| Injection pressure | Assisting effect | Assisting effect | Increasing the injection pressure decreases the warpage and vol. shrinkage while decreasing the cycle time | Mold temperature | Reducing the mold temperature decreases the warpage and vol. shrinkage and decreases the cycle time | Melt temperature | Reducing the melt temperature decreases the warpage and vol. shrinkage and decreases the cycle time |
| Packing pressure | Not clear | Not clear | Increasing the packing pressure decreases the warpage and vol. shrinkage; however, from Figure 4c, the effect on the cycle time is not clear |
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