GAC Tail Lamp Protective Cover 1

Challenge:
The main challenge was to achieve stable two-shot molding while maintaining a clean and consistent textured appearance on the tail lamp protective cover. The part required accurate positioning and reliable bonding between the two shots, while the textured surface needed to be clearly replicated with uniform grain depth and stable gloss. Any instability in mold alignment, material flow, cooling balance, or molding parameters could lead to 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, cooling time, and clamping force were fine-tuned to achieve stable two-shot molding performance and uniform textured surface quality.