Kaida Front Screen Lamp / Front Through Lamp Bezel

Challenge:
The main challenge was to control the two-shot molding process. The mold needed to ensure accurate positioning between the first-shot and second-shot parts, while maintaining strong bonding, clean parting lines, and stable surface quality. Any deviation in mold alignment, material temperature, or injection parameters could lead to flash, poor bonding, color mixing, shrinkage, or visible defects.

Solution:
We optimized the mold structure and parting line design to improve the positioning accuracy between the two shots. The gate layout, hot runner system, cooling channels, and injection parameters were carefully adjusted to ensure stable filling and consistent bonding. During mold trials, we fine-tuned the material temperature, mold temperature, injection pressure, and holding time to reduce defects and achieve a clean appearance with reliable two-shot molding performance.