Continuous Heat Sealers: Continuous heat sealers are designed to speed up the packaging operation by staying at a constant temperature throughout their use so that the seal that is applied is consistent and correct for each and every pack. Some of our machines are called ‘Continuous Band Sealers’ - the band element is the conveyor mechanism built into the machine so that bags can be loaded individually and automatically sealed, landing on a conveyor or packing bench upon completion ready to be shipped.