Figure 1 shows an automobile air-conditioning damper. Plastic part is a plate-shaped structure with hinges and bevel gears. The overall size is 74 mm*45 mm*13 mm, and material is ABS (acrylonitrile-butadiene-styrene). After molding, exterior of plastic part is covered with TPU (thermoplastic polyurethane elastomer), ABS has medium fluidity, and molding shrinkage rate is 0.5%.
Gud Mould 