Challenge:
The main challenge was to achieve a high-gloss appearance while ensuring stable two-shot molding performance. The photometric lens required accurate positioning and reliable bonding between the two shots, while maintaining good surface clarity and appearance consistency. 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, sink marks, or uneven gloss.
Solution:
We optimized the two-shot mold structure, positioning system, gate layout, and cooling system to ensure accurate alignment and stable bonding between the two shots. High-precision machining and fine polishing were applied to the visible surface to achieve the required high-gloss finish. During mold trials, we fine-tuned the mold temperature, material temperature, injection speed, holding pressure, and cooling time to reduce defects and ensure a stable appearance and optical quality.
Share your 2D/3D drawing, material requirements, annual volume and project timeline. Our engineering team will review the manufacturability and provide mold solution suggestions.