Heat seal equipment will vary depending upon the industry served, and it will vary depending upon just what item or items need to be sealed. These factors will determine whether the sealer is going to be affixed to a tabletop or whether it is to be foot operated, or a dozen other variables. It will also determine just how much heat resistance will be required.
Anytime you have a package, its seal is perhaps the most obvious potential weak point. Dangers range from mere rotting or contamination, in the case of foods and pharmaceuticals, to more immediate problems. Some materials are potentially explosive. Nearly all are sensitive to temperature, or to exposure to temperature over time. These considerations make sealing such a vital part of packaging.
There are I-Bar and L-Bar heat seal equipment, both used primarily for shrink film packaging. Many use silicone rubber, in which case the problem is adhering rubber to rubber. Others use metal, and here the problem is a more highly reactive process of adhering metal to metal. Inevitably, there is also the problem of rubber to metal sealing. Each is performed to different standards.
Depending upon the application for the heat seal equipment, it might be necessary not only to control temperature but produce a vacuum, in which case the seal will need to be airtight. Where this is the case, the issue is likely to be either keeping the contents uncontaminated, but, in other cases, preventing contact with oxygen. Again, some substances are flammable or explosive. Silicone rubber is especially effective for these applications, as they’re heat resistant at up to six hundred degrees.
A foot-operated double-impulse sealer might look complicated at first glance, but it’s actually very simple to operate. One will need a timer to time the actual sealing so that it will bind, and if one chooses an automatic machine it won’t even be necessary to go to this trouble. The double-impulse is perfect for industries demanding heavy applications, just as long as they’re not over 24″ wide and 20 mil in thickness.
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 speed is one’s prime consideration, such as in those industrial applications, continuous band sealing is an excellent option. With it, one can move bags down a conveyor belt at 472″ per minute. The bags can be mounted as one requires, whether vertically or horizontally, depending upon the substance and how much space is available. This type uses metal strips which will require just a little warmth to be applied.
Besides these, there the inevitable accessories, which run the gamut from bags to insulation blowing machines to work tables to conveyor belts and more. As we have seen, the sealing machine itself is highly variable to suit any need. Put together, these options form a perfect combination of heat seal equipment.
Based in Toronto, Ontario, this manufacturing company specializes in the duct cleaning equipment. They also sell air duct equipment as well.