Common Issues in Closure Panel Hem Seal Applications
In the fast-paced world of automotive manufacturing, precision is everything — especially when it comes to adhesive dispensing for closure panel hem seals. Yet, this application remains one of the most challenging on the production line.
Engineers are often faced with difficult-to-control variables: complex part geometries, material inconsistencies and ever-tightening production tolerances. The result? A host of recurring problems that cost both time and money.
Known Dispensing Problems with Closure Panel Manufacturing
From excess material waste to production delays, here are some of the most frequent headaches engineers face during hem sealing operations:
🔹 Overfilling the Hem Flange
Due to inconsistent application, many lines rely on excess adhesive to ensure full coverage — which wastes material and drives up costs.
🔹 Bead Skips and Neckdowns
When adhesive flow is interrupted, it can lead to incomplete sealing. These failures often go undetected until late in the process, resulting in costly, labor-intensive rework.
🔹 Damaged or Clogged Nozzles
Bent or clogged nozzles not only halt production but also require constant maintenance or replacement — a major source of unscheduled downtime.
🔹 Material Buildup Leading to Line Stoppages
Adhesive accumulation on the nozzle can interfere with part clearance, damage the surface or apply material in unwanted locations, forcing emergency stops and cleanup.
🔹 Lack of Traceability
Without a system for tracking adhesive application, quality assurance becomes reactive instead of proactive, increasing risk and uncertainty.
A Smarter Way to Seal
At Coherix, we’ve developed solutions to tackle each of these issues head-on. Our Closure Panel Hem Seal Application Brochure outlines how our precision dispensing technology helps manufacturers:
✔ Apply adhesives with exact volume and placement
✔ Eliminate rework through real-time monitoring and control
✔ Extend nozzle life and reduce maintenance
✔ Maintain production throughput with minimal interruptions
✔ Enable full traceability for every part, every time
If your team is tired of dealing with closure panel frustrations, you’re not alone — but now, there’s a better way forward.