GAC Toyota Tail Lamp Protective Cover

Challenge:
The product required fine and consistent leather texture details on the surface. Because the texture was delicate, any machining error, polishing issue, or unstable molding condition could cause texture loss, uneven surface appearance, or demolding marks. At the same time, the two-shot molding process required accurate positioning, stable material bonding, and clear color separation. Poor sealing or positioning could easily lead to flash, color mixing, bonding defects, or visible parting lines.

Solution:
We optimized the mold surface treatment process to ensure the leather texture was clear, uniform, and repeatable. The texture depth, draft angle, and surface finish were carefully controlled to avoid texture damage during demolding. For the two-shot molding process, we optimized the rotary or positioning structure, sealing area, gate location, and material flow path. During trial molding, mold temperature, injection speed, holding pressure, and cooling time were adjusted to improve bonding strength, prevent flash and color mixing, and maintain stable surface quality.