Impulse sealers are a type of sealing machine used to seal plastic bags and other thermoplastic materials. They use an electric current to create a heat seal, which quickly bonds the materials together. Impulse sealers are widely used in the food industry, for packaging and long-term preservation of food products. They are also used in other industries, such as medical and pharmaceutical, to seal products and keep them sterile. Impulse sealers are available in a variety of sizes, from small handheld devices to large industrial machines, and typically come with adjustable temperature and timer settings.