Using external air supply for its proven high-efficiency heaters, the ‘hot-air’ sealing method eliminates old fashion and expensive sealing bands, allowing a quality seal to the wide variety of thermo weldable materials and polylined multi wallpaper sacks, all at speeds from 6-12m p/Min with great efficiency.Its construction and in its various forms can cope with the most difficult production environment, with every part of the machine accessible for maintenance, experienced labour is not necessary.