How does induction heat sealing work?
Induction sealing, or cap sealing as it is also known, is a simple process.
A foil is placed inside a cap and the container is then passed under an induction sealer after it has been filled.
Heat is applied to the aluminium foil through the cap.
This melts the materiel on the foil onto the neck of the container and creates a hermetic seal
Once the aluminium foil is sealed, the product cannot leak out and germs cannot get in.
To find out more about the induction sealing process, watch the video below:
Benefits – what are the benefits of induction sealing?
Induction sealing has many benefits such as:
Extends shelf life by giving products long-lasting freshness
Prevents leaking and therefore reduces complaints from the end-user
Reduces packaging weight
Protection from counterfeiting and tampering
Increased productivity compared to other methods of sealing such as conduction
Can my product be induction sealed?
99% of all products can be induction sealed in glass and plastic containers. Enercon currently works with companies in the following industries:
Food and beverage
An induction seal can be applied to:
Liquid products like beverages and automotive oil
Hot, ambient or chilled products
Dried products like coffee, herbs and powders
Over the past 40 years, Enercon has sealed everything from wine to water, protein powder to peanut butter and engine oil to olive oil. If you’re unsure if your product can be foil sealed, contact us via the enquiry form
or call +44(0)1296 330542.
Glass - can I seal onto glass containers?
Yes, sealing onto glass is possible.
However, most glass containers are treated when produced so it is essential to order the correct type of foil as the polymer on the foil must match the treating agent used on the glass.
Here at Enercon, we offer customers free application testing to check if the product is suitable before a machine is purchased. Contact us
to find out more.
PET – can I seal onto PET containers?
Yes, sealing onto PET is much easier but again, you must ensure you are using the correct type of foil.
Your foil provider should advise you on this, but if you are unsure, our experts are here to help. Fill in the contact form
or call us today on +44(0)1296 330542.
Product size - how big a container (neck) can I seal?
You can seal containers with a cap diameter of up to 140mm.
Product shape - does my cap have to be round?
No - with the developments in induction sealing, containers no longer need a round neck and cap.
It is possible to seal a variety of shapes from ovals through to the slim-line postal packs that are popular in the pharmaceutical industry.
However, if you have an unusual shaped container, we may advise you to take advantage of our free application testing to ensure you can achieve a perfect seal.
Production speed - how fast can I seal?
At Enercon we have a variety of models to suit all speeds.
Our induction machines range from the hand-held Super Seal Junior, which is ideal for low production volume, through to the Super Seal Max Touch - capable of working at 75 metres per minute.
Different speeds will apply depending on specific needs and types of products. Enercon’s specialists can advise you on choosing a suitable sealer that will match your needs.
Foils - what sorts of foils are available?
There are many options of foils starting with a simple aluminium disc through to digitally printed foils featuring a company’s own branding.
Foils can be peelable with a tab for easy opening too. The strength peel is also variable and can be to your preferred strength.
Again, if your containers are PET or glass, make sure your cap supplier knows the type of material and the treating agent used on the surface as the polymer of the foil must match.
Where do I buy the foils from?
Your current cap manufacturer can advise on delivering your caps with the appropriate foil inserted. If you don’t currently use a cap (or container) we can provide you with a list of manufacturers in your area.
Once you have your caps with foils, all you need is the Enercon induction heat sealer and you are ready to go.
Capless sealing - is it possible to seal foil onto a container without a cap?
Yes, it is possible to seal a foil onto a container without a cap. Please contact us for further information using the contact form
or phone us today on +44(0)1296 330542.
Why Enercon Industries Ltd?
Over the past 40 years, Enercon has established itself as the principal provider of induction foil sealing systems.
From manual hand held cap sealing to high performance production line cap sealers, Enercon offers the most diverse range of induction sealer technology on the market.
Our induction cap sealers are recognised around the world for providing tamper evidence, preventing leaks and preserving freshness with hermetic seals for packagers of food, beverage, pharmaceuticals, health and beauty products, chemicals, agrochemical and household products.
Our after sales service and support is what makes Enercon truly unique – our worldwide network of representatives and distributors offer an unparalleled level of expertise for service and technical diagnostics support to help you whenever you need it.
But you don’t have to take our word for it – click here
to find out what our customers think of us.
Which model is best for me?
There are a number of factors to consider when selecting which model to purchase.
Enercon’s specialists can advise you on choosing a suitable sealer that will match your needs. For further information or advice, fill in the contact form
or phone us today on +44(0)1296 330542.
Does a higher kilowatt (KW) rating increase an induction cap sealer’s performance?
No, a higher KW rating does not necessarily increase an induction cap sealer’s performance.
While it is true that a higher KW rating means the system is more powerful, it doesn’t always result in improved sealing rates.
The most important aspect for performance is how the energy is transferred from one part of the system to another.
This is where our induction sealing machines excel.
Our team of experts have created a unique range of sealing coils that achieve an efficient and effective power transfer from the power supply all the way to the foil seal.
This means our machines will focus the inductive energy towards the container as opposed to all different directions around the coil.
As a result, the equipment’s KW consumption can often be halved, resulting in a reduction in energy costs and providing a more environmentally friendly solution for our customers.