Heat sealers, otherwise known as bag sealing machines, are machines that seal products, packaging and other thermoplastic materials using heat. These machines can seal much more than many people think two – Not only able to seal two layers of thermoplastic material together but also able to seal together several layers of thermoplastic material and even a range of other materials as long as one layer is thermoplastic. This type of packaging, or ‘bagging’, has in recent years become highly popular, due to many industries realising that it can serve them more than they originally thought.

With many different types of heat sealing available today we are going to be discussing just some of the most common types. These are:

Hot bar sealing – Hot bar sealing is also known as direct contact thermal sealing – it is a type of sealing in which the heated tools are kept at a consistent temperature. These machines typically utilise multiple heated bars or irons that work to form a bond when placed upon material intended to seal.

Continuous heat sealing – Continuous heat sealing is also referred to as band type heat sealing. This type of sealing utilises moving belts over heating elements for maximum effect.

Impulse heat sealing – Impulse heat sealing machines have heating elements (either one or two) of Nichrome placed between resilient synthetic rubber. The heating elements within these machines are not constantly heated, with heat only being generated when current is flowing. This of course means that these machines are as ecofriendly as possible.

Hot melt adhesive – Hot melt adhesives are typically applied in strips. In a lot of cases these are applied to products and bags during manufacturing and then reactivated before bonding.

Hot wire sealing – Hot wire sealing utilises a heated wire that both cuts materials and joins them together with a molten edge bead, able to create truly uniform and tidy packaging.

These are only a few of the heat sealing methods available too – if you own a business and are looking for a packaging/bagging solutions to impress your customers and clients, we highly recommended that you contact your local shrink wrapping supplier today who will be able to discuss your most suitable options.