For an automotive interior systems client, their A-pillar acoustic and sealing component faced persistent manufacturing challenges that affected both performance and production efficiency.
The original single-shot molded design failed to meet the OEM’s requirements for cavity filling and NVH (noise, vibration, harshness) reduction. The client’s previous supplier struggled with inconsistent bonding between the hard structural substrate and the soft foam layer, leading to delamination during assembly. Additionally, the manual post-foaming process was slow, labor-intensive, and resulted in uneven expansion, causing fit issues and high rejection rates.
After evaluating several specialized mold makers, the client chose our team for our proven expertise in complex dual-shot and multi-material molding. We engineered a custom two-shot mold with an integrated rotating core system. The process first molds the rigid black structural frame, then the mold indexes to a second station where the thermally reactive foam material is injected. This eliminates secondary operations entirely.
We also optimized the mold’s venting and heating control to ensure uniform foam expansion when the part is installed in the high-temperature paint shop. The final component delivers reliable acoustic sealing, reduces assembly labor, and meets the strict dimensional and performance standards of the automotive OEM.
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