Induction sealer sealing-window setup sheet

What a sealing window means

A sealing window is the range where the induction field gives enough energy to bond the foil liner to the container mouth without burning the liner, distorting the closure or leaving weak edges. The window is found by testing the actual cap, liner, container and conveyor conditions, not by relying on a published machine speed alone.

For production use, the setup record should show the accepted setting and the nearby rejected settings. That gives operators a practical boundary when they return to the line after cleaning or changeover.

Setup fields to capture

Field	Cap outside diameter, cap type, liner construction, container material, neck finish, product, fill level, conveyor speed, head height, power setting and cooling time before checks.
Trial range	Test below target, at target and above target line speed where practical. Record whether each point passed visual, peel and leak checks.
Operator note	Record any handling issue such as unstable bottles, loose caps, liner movement or product contamination around the mouth.

How to use the sheet after installation

Use a separate setup line for each cap and liner group. A contract packer with several customers may need multiple records even when the same machine is used. The aim is to avoid treating one accepted setting as universal across unrelated packs.

• Use validation checks to prove the setting
• Use troubleshooting if results become unstable
• Send the required details for quotation