What is an Aluminum Foil Induction Can Sealing Machine?
Since an aluminum foil induction can sealing equipment is used in sealing containers using an aluminum foil, some also call them as:
- Aluminum can sealer machine/equipment
- Aluminum sealer machine/equipment
- Aluminum can seamer machine/equipment
These packaging machines are used to hermetically seal glass and plastic jars, cans, and bottles via induction sealing to extend product shelf life, prevent leaks, and most especially to provide tamper-evident seals. Aluminum foil induction can seamer machines are available in electrically-powered, handheld, and manual designs for sealing various closure sizes.
What is Induction Sealing?
Induction sealing is a non-contact method of bonding materials made from thermoplastics through electromagnetic induction which generates eddy currents to heat the materials. In the packaging industry, this process is used to hermetically seal a container cap having a foil laminate sealable by heat. In the case of our Aluminum Foil Induction Sealer Equipment, the foil laminate is an aluminum heat induction liner.
What is an Aluminum Heat Induction Liner?
You’ve seen these things covering bottle and jar containers when you open a packaged product such as peanut butter or bottled medicines. An aluminum heat induction liner is a silver foil at the opening of a container that proves that the packaged product is tamper-evident. They require an aluminum foil induction can sealing equipment to properly seal these liners to the can.
Moreover, a typical aluminum heat induction liner inside a cap is a multi-layered seal made up of the following strategically situated and designed layers:
- A pulp paperboard layer
- A wax layer
- An aluminum foil layer
- A polymer layer
The topmost layer, which is the pulp paperboard layer, nests against the lid’s inside part and is spot-glued to it. Followed by a layer of wax used to bind the pulp paperboard layer to the third layer, the aluminum foil, which is the layer that adheres to the container. The last layer at the bottom is the polymer layer which looks like a plastic film.
These four layers work together in order to achieve the necessary dynamics for a successful induction process to produce an airtight seal.