Also known as cap sealing, the induction sealing process is simple. Product containers with raw material and a cap with a foil liner pass through an induction sealer. As containers pass through the sealer, there is a transfer of energy from a controlled electromagnetic field.Induction sealing is a non-contact heating process that welds a foil laminate (called an inner-seal) to the lip of jars and bottles. The sealing process takes place after the filling and capping operation. Capped containers pass under an induction cap sealer mounted over a conveyor.