The hot air (convection): uses ambient air, which is transmitted to heating capsules where it is heated. This hot air is then blown onto the bag for the sealing process. It is limited to open mouth pillow PE bags

The band (conduction): where fixed heating elements heat the bag by direct contact through a pair of bands. It closes a large number of bag types: open mouth pillow PE/ foil bag, open mouth gusseted PE/ foil bag, uneven thickness PE bag i.e. handles, zip, bubble bags.

The radiant sealer (radiation): the bag moves between a pair of heating elements. It is designed for paper/ Aluminium with inner glue/ PE bag, uneven thickness i.e. handles

No doubt, the Saxon sealers will answer your need.