Theory:

Induction cap sealing is a non-contact process by which a foil disk or "seal" is bonded to a container.  First, the caps are supplied with an aluminum foil induction innerseal, ready to load into the capper. The container is then filled and capped by the existing process, using the caps that are pre-lined with the induction innerseal.  This method is widely used to hermetically seal plastic and glass containers to provide tamper evidence, preserve freshness and prevent leakage.

The machine GIS-3000 has already passed a patent application.