A Simple Guide to Heat Sealer Machines

Are you looking for a fast and effective way to close bags containing your products? A heat sealer machine for sealing plastic bag is what you need. A heat sealer is a machine that is used to seal plastics and polythene. Available in different types, choosing the right heat sealer will depend on your application.

Bellow, I've listed the main characteristics of heat sealer to help you determine which best fits your needs.

Types

There are two main types of sealers: impulse heat and direct heat.

• Impulse heat - this type of heat sealer machine for sealing plastic bag requires no warm-up time and seal by applying a pulse of energy to the sealing area, followed by cooling. These machines are recommended for any thermoplastic material such as polypropylene or polyethylene, which requires a lower seal temperature. 

• Direct heat - this type keep constant heat in both jaws. Because it uses power as long as the machine is turned on, it has a better heat penetration that allows the seal of thicker materials. This sealer is recommended for materials such as poly film, aluminum foil, gusset bags, waxed paper, mylar, coated kraft papers, cellophane, and other thicker materials.

Size

The size of sealer to choose depends on the width of the material to be sealed. Experts recommend adding 2,5cm to the width of material to be sealed for easier handling. Cutters on the sealer generally trim at slightly less than the width of the sealer arm.

Width of Seal

The width of the seal is determined by the heating elements, which can be round or flat. These heating elements are often interchangeable in most sealers. The round type is mainly used to cut and seal with no excess material above the seal. The flat type comes with two heating elements for faster heat penetration, making them suitable for sealing thicker material.

Heat sealer machines generally feature metal construction to provide industrial quality strength and ensure lasting durability. Most of them are equipped with a plug-in electronic timer and built-in microswitch and warm-up time is not always needed. The variable timer let you seal various types and thickness of plastic films and a signal light and beep is used to indicate when the heat cycle is complete and the seal is done. The number in the model often indicates the size of the sealer and the letter in the model number is used to design the manufacturer and type of sealer.