Chery Tail Lamp Protective Cover 3

Challenge:
The main challenge was to ensure stable two-shot molding while maintaining a consistent textured appearance on the visible surface. The part required accurate positioning and reliable bonding between the two shots, while the texture needed to be clearly replicated with uniform grain depth and stable surface quality. Any instability in mold alignment, material flow, temperature control, or molding parameters could lead to defects such as poor bonding, flash, color mixing, flow marks, weld lines, uneven texture, gloss variation, or deformation.

Solution:
We optimized the two-shot mold structure, positioning system, parting line, gate layout, and cooling system to ensure accurate alignment and stable bonding between the two shots. The mold texturing process was carefully controlled to achieve clear grain definition and consistent texture depth. During mold trials, mold temperature, material temperature, injection speed, holding pressure, and cooling time were fine-tuned to ensure stable two-shot molding performance and uniform textured surface quality.