Heat sealers are used to seal a wide range of packaging products from food, pharmaceutical, hardware and other materials into thermoplastic bags. The heat sealed packaging ensures that your product is tamper proof, air and water tight and hygienic. There are two basic technologies for heat sealing machines; Impulse Heat Sealers and Constant Heat Sealers both types of machines are available as a hand heat sealer, portable hand held sealer, foot heat sealer, industrial heat sealer and band sealers.
Impulse Heat Sealers
Impulse heat sealing machines have one or two heating elements which are covered by a layer of PTFE or Teflon fabric type material which prevents the bag sticking to the sealer.
The heating elements are not continuously heated; heat is only generated only when the jaws are closed and current flows. When the bag is placed in the impulse heat sealer, the jaws are closed and pressure maintained for the time of the seal (while the light is on). Then pressure is held for about 2 seconds to allow the seal to cool.
Hand sealers are great for low usage and in some cases for medium usage they don’t take up much space and can be moved around easily. Many of the hand sealers incorporate the Impulse, With Cutter
Foot pedal sealers are great for low-medium usage they allow sealing to be operated with hands free to aid lifting or positioning your product, the .
Double Foot Operated Impulse Sealers (X2) have a heating element on both the top and bottom jaws which makes these sealers suitable for thicker material and industrial use.
Direct Heat Sealers
The jaws of direct heat sealers or constant heat sealers heat up to pre set temperatures and are better suited for bags and packaging products having different properties and melting points, such as; foils (side gusseted foil coffee pouches), waxed, coated papers, cellophane and polypropylene laminates. Many direct heat sealers are Crimp Heat Sealers giving a deeper seal of more than 10mm and are for increased strength.
If you require an industrial sealer the semi-automated heat sealer machine the Continuous band sealers can provide the solution which operate with a conveyor system for high volumes.
Packsealer has been established since 2000 and offers guidance in choosing the right heat sealer machine for your packaging, send us a sample bag and we will test it. We hold a complete range of spares for our own machines and other similar for ongoing support.
Vacuum Sealers combine the heat sealer with a vacuum pump to remove the air from your packaging.