INDUCTION SEALING

When a product contained in a rigid container requires a seal to prevent product leakage and/or a tamper evidence seal, the most common method of achieving this is through inductive sealing. This process involves generating an energy current through a coil contained in a thermoplastic head designed to accommodate a variety of closure dimensions. The induction sealing process generally revolves around a laminated insert placed into the closure during the manufacturing process this insert consists of a pulpboard carrier, a wax layer, a foil layer and an emulsion that when exposed to the non-contact inductive energy seals to the surface are of the container. The same energy, which creates heat, melts the wax layer leaving the pulpboard carrier inside the cap and the foil layer seals the product inside the container.

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