How should I determine the correct sealing temperature for a packaging machine?
• Set the baseline from the film supplier's heat-seal curve at the peak seal-strength temperature.
• Run a gradient test in 5°C steps on a heat-seal tester, measuring peel strength and actual jaw temperature.
• Adjust heat-seal pressure and dwell time together; higher temperature cannot fix insufficient pressure.
• Base settings on actual dwell time at line speed; raise temperature 10-20°C when speed increases.
• Validate continuous sealing at FAT: no channel leaks, stringing, or film shrinkage.
• Run a gradient test in 5°C steps on a heat-seal tester, measuring peel strength and actual jaw temperature.
• Adjust heat-seal pressure and dwell time together; higher temperature cannot fix insufficient pressure.
• Base settings on actual dwell time at line speed; raise temperature 10-20°C when speed increases.
• Validate continuous sealing at FAT: no channel leaks, stringing, or film shrinkage.