Induction Cap Sealing

Induction Cap Sealing

What is Induction Cap Sealing?

The electromagnetic field generated by the induction sealing system heats the foil/polymer liner placed over the container opening as it passes under the induction coil. This heating melts the polymer, sealing the liner upon cooling.

The food and medical industries require high-speed hermetic sealing between the cap and the container. Our technology is used worldwide for cap sealing.

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Induction cap sealing Benefits 

  • Meets tight production tolerances with precise localized heat to small areas creating pinpoint accuracy

  • Increases production rates with faster heating cycles

  • Reduces defect rates with repeatable, reliable heat

  • Eliminates variability from operator-to-operator, shift-to-shift

  • Maintains metallurgical characteristics of the individual metals

Induction cap sealing

Free Induction cap sealing Application Notes

image: Sealing an Aluminum Cap Seal on a Plastic JugSealing an Aluminum Cap Seal on a Plastic Jug

To heat one aluminum cap seal on a plastic jug for a cap sealing application. The client is replacing past systems that no longer work for their process.

image: Bonding Foil to a Plastic BottleBonding Foil to a Plastic Bottle

It was confirmed that the aluminum heated sufficiently to create a bond between the foil and the bottle, meeting the client’s objective.

image: Sealing Aluminum Caps (Beverages)Sealing Aluminum Caps (Beverages)

Induction delivers the same result time after time, making it ideal for this high-volume manufacturing process. The space-efficient 45 kW EKOHEAT fits nicely into the client's floor plan.

image: Sealing a Plastic ContainerSealing a Plastic Container

An EASYHEAT and a workhead required a minimal footprint, saving the client floor space.

image: Sealing an aluminum disk onto a plastic capSealing an aluminum disk onto a plastic cap

Induction heating enabled the aluminum to seal to the plastic cap quickly without the cap being damaged. The customer desired a quick rate which would make in-sourcing the process worthwhile, and induction heating exceeded the targeted production rate thanks to its fast heating.

image: Heating pre-assembled plastic tube and cap for cap sealing applicationHeating pre-assembled plastic tube and cap for cap sealing application

Customer currently has Ambrell equipment and would like to increase their run rate.

image: Sealing aluminum foil cap to plastic bottleSealing aluminum foil cap to plastic bottle

Coil design can be incorporated to fit a wide range of production setups. Hands-free heating, involves no operator skill for manufacturing and directly heats only perimeter of foil.

image: Cap Sealing 3.5 Lotion ContainerCap Sealing 3.5 Lotion Container

Power is applied directly to the foil; no energy is wasted heating the cap or the surrounding air or parts.

image: Cap Sealing; Shampoo ContainerCap Sealing; Shampoo Container

A three-turn two-position helical coil is used to heat the aluminum foil in a tunnel style assembly. Product (containers) passes easily under the induction coil.

Frequently Asked Annealing Questions

Popular Cap Sealing Note

Popular Cap Sealing Video

Induction cap sealing Resources:

Select from our libraries of materials to help you better understand the benefits cap sealing with induction heating can bring to your process.

Four Ways To Contact Ambrell for Support


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