Induction sealing

Induction Sealing

An induction sealed bottle.

Induction sealing is a non-contact method of sealing a container with a closure that includes a heat-sealable foil laminate. This process is widely used in the packaging industry to ensure product integrity and prevent leakage.

Process

Induction sealing involves the use of an electromagnetic field to heat a metallic disk, which is typically a foil layer, that is part of the closure. The heat generated by the electromagnetic field melts the heat-sealable layer, bonding it to the container's rim.

Equipment

An induction sealer on a conveyor belt.

The equipment used for induction sealing includes an induction sealer, which can be a handheld device or part of an automated conveyor system. The choice of equipment depends on the production scale and the type of containers being sealed.

Handheld Induction Sealers

A handheld induction sealer.

Handheld induction sealers are portable devices used for small-scale operations or laboratory settings. They are ideal for sealing small batches or for applications where flexibility is required.

Conveyor Induction Sealers

Conveyor induction sealers are integrated into production lines and are used for high-volume sealing operations. They are capable of sealing hundreds of containers per minute, making them suitable for large-scale manufacturing.

Applications

Induction sealing is used across various industries, including food, pharmaceuticals, and chemicals. It is particularly valued for its ability to provide a tamper-evident seal.

Food Industry

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Induction sealing in the food industry.

In the food industry, induction sealing is used to preserve freshness and prevent contamination. It is commonly applied to seal jars, bottles, and other containers holding liquids, powders, or granules.

Pharmaceutical Industry

In the pharmaceutical industry, induction sealing ensures the integrity of medicinal products by providing a hermetic seal that prevents contamination and extends shelf life.

Advantages

Induction sealing offers several advantages, including:

• Tamper evidence: The seal provides a clear indication if the product has been tampered with.
• Leak prevention: The hermetic seal prevents leaks and preserves product quality.
• Extended shelf life: By preventing contamination, induction sealing helps extend the shelf life of products.

History

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Jack Palmer, a pioneer in induction sealing technology.

The development of induction sealing technology can be attributed to advancements in electromagnetic induction and packaging technology. Jack Palmer is often credited with pioneering work in this field, contributing to the widespread adoption of induction sealing in various industries.

Related Pages

• Sealing (mechanical)
• Electromagnetic induction
• Packaging and labeling