Challenge
An automotive interior functional part required higher stiffness, stable dimensions and acceptable impact strength while keeping a lightweight PP-based material direction. The part also needed a stable injection molding process window for repeated production trials.
Material Solution
The material direction used a modified PP compound with mineral reinforcement, impact modifier balance and processing stabilizer support. The review focused on stiffness, shrinkage, warpage risk, low odor direction and assembly tolerance.
Key Engineering Controls
- Balanced stiffness and impact strength for automotive interior functional parts.
- Controlled shrinkage and dimensional stability for assembly tolerance.
- Modified PP direction instead of unnecessary engineering plastic over-specification.
- TDS review, molded sample testing and process-window validation before scale-up.
Outcome
The customer received a clearer PP compound direction for trial validation, including what properties to compare in TDS review and what molding risks should be checked during sample evaluation.