Avoid Hot Melt Adhesive Degradation During Downtime

In today’s manufacturing industry, a high original equipment effectiveness (OEE) percentage is crucial to a company’s success. According to Ignition, an OEE of 85% is considered world-class performance. However, downtime is unavoidable at times. For example, during holidays, breaks and scheduled maintenance, the equipment line must be stopped. While planned downtime doesn’t as negatively impact OEE as unplanned downtime, it’s still important to decrease it as much as possible. One way to do this is by avoiding hot melt adhesive degradation.

Avoid Hot Melt Adhesive Degradation

Hot melt adhesives can degrade with extended time at elevated temperatures when an equipment line is not running. During this time, the adhesive is left stagnant to “age” in the equipment. This degradation can negatively affect adhesive:

  • Appearance
  • Processability
  • Performance

Bostik offers guidelines on how to properly setback the equipment’s temperature to avoid hot melt adhesive degradation during equipment downtime.

Temperature Setback Guidelines

Length of Downtime Temp. Reduction for All Zones
0-2 hours None
2-12 hours Reduce by 30°C from Run Temp.
Optional* 12-24 hours Reduce all to 100°C
Greater than 24 hours Turn off**

*This is an alternative to complete shutdown for 12-24 hour duration.

**Bostik understands that production facilities may have followed other setback procedures for significantly longer periods of downtime in an attempt to minimize start-up related issues. However, Bostik cannot endorse this practice without additional research.

By following these guidelines, it’s likely that hot melt adhesives will maintain performance after an equipment downtime. For more information on the suggested guidelines, contact a Bostik expert today.

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