GAC Tail Lamp Protective Cover 2

Challenge:
The main challenge was to ensure stable two-shot molding while maintaining a consistent textured appearance on the tail lamp protective cover. 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, cooling balance, or molding parameters could cause 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 improve molding stability and bonding accuracy. The mold texturing process was carefully controlled to ensure clear grain definition and consistent texture depth. During mold trials, mold temperature, material temperature, injection speed, holding pressure, cooling time, and clamping force were fine-tuned to achieve stable two-shot molding performance and uniform textured surface quality.