Cryogenic Finishing

Flash — the thin membrane of excess rubber formed at mold parting lines, is an inherent byproduct of rubber molding. For critical sealing and aerospace components, flash removal must be precise, consistent, and non-destructive to the part surface. CPI employs automated cryogenic deflashing technology that achieves a level of cleanliness and repeatability that manual trimming simply cannot match.

The cryogenic process works by rapidly cooling parts and flash simultaneously using liquid nitrogen. At cryogenic temperatures, the thin flash becomes brittle while the bulk of the part remains dimensionally stable. A controlled blast of cryogenic media then removes the flash cleanly along the intended parting line, leaving a smooth, flash-free surface finish without affecting part geometry or material properties.

This automated approach eliminates operator variability, reduces labor costs, and dramatically improves throughput for high-volume programs. It is particularly well-suited for complex geometries with intricate parting lines, small cross-sections, and tight tolerance features where manual deflashing would risk part damage or inconsistent results. The result is a finished component ready for CMM inspection, assembly, or customer delivery.