Many internet shopping sites, and their delivery carriers, impose conditions on suppliers when it comes to packaging, particularly for liquids or creams.

The usual requirement is that the container has a volume of 1 litre or less and has a double-sealed screw cap.

There are various ways of achieving a double seal – the bottle could be capped and have a shrink-wrap plastic shield over the entire bottle, or the capped container could be placed inside a sealed plastic bag. Both solutions add cost and have environmental impact issues.

The simplest way to achieve a double seal is with induction cap sealing.

All that is needed is a foil liner to be placed inside your existing cap before it is screwed onto the filled container. (It’s common to buy caps with the liners fitted direct from your cap supplier, you don’t have to fit them yourself).

The capped container passes under an induction field and the instantaneous heat melts the plastic on the seal creating an air-tight seal.

The hermetic seal is so strong, it is more likely the container would burst rather than the seal fail.

For a more detailed look at how a heat sealing machine can help you prevent e-commerce packaging leaks, take a look at this video from Selig, a global leader in supplying induction sealing materials for consumer packaging.

Amazon show an induction sealed container as an example of a non-breakable, double-sealed container.

An induction seal will easily pass Amazon’s 125cm drop test.

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Many supermarkets and other outlets also now insist on double-sealed containers.
For more information about how induction cap sealing can meet these demands, contact us


What Our Customers Say



“Before investing in an induction sealer, I was afraid to send my product out, unsure of how they would arrive at my customer’s door. Now I have the confidence to ship my products.”

Jennifer Hardaway, founder of KLEAN Spa


“When you have a seal on your bottle it gives you that reassurance that there is something there between your product and the atmosphere.”

Mark Tooth, Director at Wyepak


“I believe leaks have dropped significantly since we started using the induction sealer and I would recommend Enercon to companies with similar problems.”

Richard Dyson, Managing Director of Greyland


“You can’t put a price tag on dependability. Customer complaints are nearly eliminated and 99% of our problems were solved with the induction sealer – it was a godsend.”

Darryl King, Director of Operations for Floratine
Reliable seal quality at the core of our performance