A double impulse sealer is a fine choice for heavy-duty, industrial applications so long as they are not more than twenty-four inches wide and twenty mil thick. Fortunately, they are also easy to use, and the machine doesn't need to be automatic. A foot-operated machine will suffice for any job, and working it is extremely simple even though it will be necessary to use a timer.Most machines assume larger-scale jobs and are either stand-alone or at least table-mounted, but many are portable.

Portable types come in all the usual varieties, from clam shell sealers to ultrasonic. Hand sealers are perhaps the most basic type, and are useful for poly bags as well as any sort of thermoplastic substance.When there is so much work to do that bags are run along a conveyor belt, and one is essentially operating a factory, there's nothing faster than continuous band sealing.

These use metal strips which, fortunately, require little warming. Speed typically runs up to four hundred and seventy-two inches per minute. They can be set to mount the bags vertically or horizontally - whichever is most efficient, or suits the substance to be packaged.

On top of this, there is a wide range of peripheral equipment, from the conveyor belts to work tables. Nearly every machine comes with, or without, a cutter attached. It goes without saying that the bags themselves are part of heat sealing equipment.