A Guide to Heat Induction Sealing

When applied properly, induction sealing provides a hermetic and air-tight seal that is tamper-evident. The U.S. Food and Drug Administration’s (FDA’s) tamper-resistant packaging requirements even stated that seals applied using heat induction to containers produce more reliable tamper-evident packages. Printing QR codes and promotional materials on the heat induction liner foil is even a trend. To help you better understand what induction sealing is including induction sealing machines, we have created this guide for you. So keep on reading to know more! What is Heat Induction Sealing? Heat induction sealing produces hermetically sealed containers in a non-contact process. These containers have closures that include foil laminates which are heated to create a seal. Using heat induction sealing is effective in: Extending the shelf life of products Enhancing the value of your products Preserving freshness Preventing costly leakage Typical inner induction seals begin as multi-laminate liners inside a container closure. The liners are composed of four layers: A pulpboard layer A wax layer A layer of aluminum foil A polymer layer (heat seal film) The polymer layer matches the material the container is made from and can be heated to seal the lip of a container.