Firefly CHMSL Housing

Challenge:
The main challenge was to achieve stable two-shot molding while maintaining a consistent textured appearance on the CHMSL housing. 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, we fine-tuned the mold temperature, material temperature, injection speed, holding pressure, cooling time, and clamping force to achieve stable two-shot molding performance and uniform textured surface quality.