Abstract:
Plastics are widely used in various industries for their versatility, lightweight properties, and ease of manufacturing. Plastic injection molding is a key process in producing high-quality, complex plastic parts, allowing for mass production with precision and efficiency. However, challenges such as warpage and shrinkage defects during cooling can significantly affect the dimensional accuracy and performance of molded parts. Warpage occurs when uneven cooling causes internal stresses, leading to deformation, while shrinkage results from material contraction as it cools. These defects are influenced by factors like material properties, mold design, and process parameters. Various techniques, including optimization of molding parameters and innovative approaches like in-mold decoration and microcellular injection molding, have been developed to minimize these issues. This paper explores advancements in warpage control with emphasizing their impact on product quality and manufacturing efficiency. Case study shows the modelling of warpage defect with nonlinear regression analysis developed by full factorial design (FFD).
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