IMPULSE HEAT SEAL COMPONENTS
AND HEAT SEAL SUPPLIES

Heat Seal Supplies

There are a number of configurations you may wish to use in setting up your jaw bars. A TOSS Applications Engineer is available to help you design the perfect system. It is necessary to provide a back-up material behind the impulse heat seal band when it is mounted on the heat seal jaw bar or platen. It is also necessary to provide a cushion or facing on the opposite jaw bar or platen face. The selection of the best combination of these components may require some testing to determine which combination of these elements is most effective with the goods to be processed. It is essential that the impulse heat seal band be both electrically and thermally insulated from the jaw bar. The most common materials used for this purpose are PTFE tape, Siglaha®, Polyimide and Durit®.

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Custom Heat Seal Jaw Bars

Made from extruded aluminum, TOSS bars are straight and true to assure uniform force and create perfect seals. Single lengths are available up to twelve feet and can be connected easily for longer applications. Water-cooling is also available. Precision-machined heatseal jaw bar assemblies include jaw end blocks that assure proper heat seal band monitoring and tensioning.

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Current Transformers

The current transformer continuously monitors the current passing through the heatseal band. This, together with voltage monitoring, allows the controller to accelerate heating without overshooting and finally monitors the cooling to determine the optimum moment to open the seal jaws and release the workpiece.

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Power Transformers

Power Impulse Transformers from TOSS are engineered to deliver the optimum voltage for the intended sealing application. Electrically quiet and equipped with multi-tap terminals makes secondary voltage changes quick and easy.

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Straight Impulse Heat Seal Bands

TOSS Alloy-20® Impulse Heatseal Bands are available in over 350 styles, shapes and sizes. Custom designed for any application, new or existing, TOSS Alloy-20 Impulse Heatseal Bands are longer lasting and provide for effective sealing at optimum speeds. TOSS’s Norex® Impulse Heatseal Bands are ideal for sealing applications that require a minimal amount of heat seal band expansion. All TOSS heat seal bands are mounted between a layer of PTFE tape and a layer of PTFE cover strip whenever the operating temperatures are below 250ºC. Polyimide tape and cover strip is used if over 250ºC.

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Contoured Heat Seal Bands

TOSS Alloy-20® Heatseal Bands along with Norex® Impulse Heatseal Bands are also available in custom contoured shapes. Sealing and/ or cutting, TOSS can fabricate your band into an infinite array of shapes to satisfy your every impulse heating need. Bands can be designed with localized treatment to selectively isolate areas of the bands that will remain cool.

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Custom Designed Sealing Presses & Platens

TOSS can provide bench presses and platens on which to mount custom contoured heatseal bands. Optional water-cooling will produce faster operation. Bench presses come complete with control modules that include the Controllers, Transformers, and other components required for convenient control of the press operation and heating cycle.

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Heat Seal Cover Materials

In The Optimum Sealing System, the impulse heat seal band must be electrically and thermally insulated from the jaw bar. TOSS offers a wide selection of PTFE cover cloths and tapes that are available in standard and custom sizes. Other insulating materials available from TOSS include Silicone Rubber, Durit® and Siglaha® (silicone glass).

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Continuous Band Heat Sealer

Driven by a mechanical link to the basic machine, or by servo motor, this constant heat sealing device includes a pneumatic retract to avoid overheating in the stand still condition.

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Hot Air Sealer

TOSS Hot Air Continuous Plastic Seam Sealers are a patented new concept that can be conveniently installed on virtually any machine that requires perfect heat sealing of plastic films, either intermittent or continuous.

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Power Boosters

TOSS Technology can be supplemented with TOSS Power Boosters to accommodate the high power needs of extra large heat seal bands or systems. Using a Power Booster, multiple bands may be connected in series or parallel to be driven by a single controller. Systems can be designed for power supplies of 115, 230, 400, or 480 VAC.

Line Filters

Line Filters minimize the risk of possible interference from power line noise. If your application needs to meet European CE ratings, a TOSS Line Filter will be required.