How To: Heat Induction Sealing
Heat induction sealing is a process of using heat, generated by an electromagnetic field, to weld an aluminum foil seal to the top of a bottle or other container. Used commonly in the packaging of food products and pharmaceuticals, its airtight seal improves product shelf life and prevents leakage. It also provides assurance to consumers that the product hasn't been opened or tampered with prior to purchase. Although induction sealing requires specialized equipment, there are handheld models available.
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Instructions
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Choose the type and size of liner and cap you require for the container you want to seal. Your contents and the material your container is made of will determine the type of liner that is most appropriate. The liner will be placed inside the cap with the aluminum side facing outward.
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Fill your container with the substance you want induction sealed and close the cap. Turn the cap until it is firmly closed and the liner is in contact with the lip of the container.
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Select the appropriate sealing time on your handheld induction sealer. Check the specifications of your liners and your induction sealer's operation manual to determine the proper time. The size of the container, the liner type and container type will all influence the time needed to make a seal.
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Place the cap beneath the heating unit and activate the induction sealer. The machine will automatically turn off based on the time you set.
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Open the cap and test that the liner is firmly sealed to the container and that the liner has not been damaged by overheating.
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References
- Photo Credit pill bottles image by igor kisselev from Fotolia.com
