Impulse Heat Sealer IS500

Features & Benefits

• Impulse Heat Sealer IS500 seals bags and layflat tubing up to 500mm wide
• Creates a 2mm-wide seal
• Handles film up to 2 x 150 microns thick
• Cutter-free design suits pre-made bags and pre-cut tubing
• Wide sealing area accommodates larger packaging
• Adjustable sealing time supports different suitable film thicknesses
• Impulse operation heats the element during each sealing cycle
• Manual sealing arm provides straightforward control
• Tabletop design suits packing benches and workstations
• 800W power consumption
• Capable of completing more than 100 seals per shift
• Weighs approximately 5.8kg
• Suitable for compatible polythene bags and layflat tubing
• Supplied as one complete heat-sealing machine
• Available for delivery throughout mainland UK

Common Uses

• Sealing wide polythene bags
• Closing pre-made packaging bags
• Sealing layflat tubing
• Producing custom-length polythene bags
• Packaging larger components
• Protecting products from dust and dirt
• Warehouse packing stations
• Ecommerce order preparation
• Manufacturing and assembly areas
• Stockroom packaging
• Retail product preparation
• Parts and component packaging
• Light production environments
• Repetitive bag-sealing tasks
• General industrial packing

Impulse Heat Sealer IS500 Without Cutter

Our Impulse Heat Sealer IS500 provides a practical way to seal compatible polythene bags and layflat tubing. Its wide sealing area accepts packaging material up to 500mm, or approximately 19.69 inches, across the sealing line.

The 500mm measurement refers to the machine’s maximum sealing length rather than its complete external width. Therefore, the section of the bag or tubing that requires sealing must fit within the 500mm sealing area.

This model does not include an integrated trimming cutter. Consequently, it works particularly well with pre-made bags, pre-cut tubing or packing operations that already use a separate cutting tool.

The machine produces a narrow 2mm seal and handles film up to a stated maximum thickness of 2 x 150 microns. However, material composition, folds and gussets can affect the results. Therefore, test the actual packaging material before beginning regular production.

Impulse Heat Sealer IS500 Specifications

The maximum film thickness refers to two layers of film, each measuring up to approximately 150 microns, 0.15mm or 0.0059 inches.

However, gussets, folds and overlapping sections create additional layers across the sealing line. As a result, the effective thickness may exceed the machine’s stated capacity.

Always test the actual packaging material rather than relying entirely on its nominal micron or gauge measurement.

Understanding the 500mm Sealing Capacity

The Impulse Heat Sealer IS500 creates a straight seal measuring up to 500mm, or approximately 19.69 inches, long.

This wider sealing area makes the machine suitable for bags and tubing that cannot fit comfortably across smaller 200mm, 300mm or 400mm models.

For the best results, position the entire bag opening flat across the sealing bar. Avoid creases, wrinkles and trapped product because these can interrupt the finished seal.

A bag measuring exactly 500mm wide may require careful positioning. Therefore, allow a practical margin whenever possible.

Cutter-Free Impulse Heat Sealer IS500

This model seals packaging without cutting or trimming the film. Accordingly, it suits businesses that regularly use:

• Pre-made polythene bags
• Bags already cut to length
• Pre-cut layflat tubing
• A separate film-cutting station
• Packaging that does not require trimming after sealing

When using continuous layflat tubing, cut the material separately with an appropriate safety cutter or cutting system.

Complete the cutting task on a suitable protected surface. Additionally, keep blades and cutting tools away from the heating element, electrical cable and machine body.

If your packing process requires sealing and trimming at the same workstation, consider whether the IS500C cutter-equipped model would provide a more convenient option.

How the Impulse Heat Sealer IS500 Works

The machine sends a controlled pulse of electrical energy to its heating element when the operator lowers the sealing arm.

The element then heats the packaging material while the arm applies pressure. This combination joins the two compatible film layers and creates the seal.

Once the heating cycle finishes, keep the arm lowered briefly. The additional cooling time allows the material to set while it remains under pressure.

Impulse machines heat during the sealing cycle rather than maintaining continuous heat. Nevertheless, the sealing area can remain hot after repeated operation. Therefore, users must avoid touching the element, sealing bar and surrounding surfaces.

Setting Up the Impulse Heat Sealer IS500

Place the machine on a clean, dry, stable and heat-resistant work surface. Furthermore, allow enough space for the operator, packaging material and products.

Before connecting the machine:

1. Inspect the casing, sealing arm and electrical cable.
2. Check that the heating element remains correctly positioned.
3. Inspect the protective sealing cover for wear or damage.
4. Remove loose packaging and combustible materials from the area.
5. Confirm that the electrical supply matches the machine’s rating label.
6. Position the cable so it cannot create a trip or snagging hazard.
7. Select a low initial timer setting.
8. Test the machine using an offcut of the intended packaging material.

Increase the timer gradually until the machine produces a secure seal. Avoid using more heat than necessary because excessive heat can melt, distort or cut through the film.

Using the Impulse Heat Sealer IS500

First, place the product inside the bag while leaving enough unused material above it to create the seal.

Next, remove excess air where appropriate and flatten the bag opening. Make sure the sealing area remains free from moisture, grease, dust and loose product.

Position the material evenly across the sealing bar. Then lower the arm firmly to begin the sealing cycle.

After the heating cycle finishes, keep the arm closed for a short cooling period. Finally, raise the arm and remove the bag carefully.

Inspect each seal before using the completed pack. If the seal separates easily, increase the setting slightly or allow more cooling time. Conversely, reduce the setting if the film burns, wrinkles, sticks or melts excessively.

Adjusting the Sealing Time

Different film types and thicknesses require different timer settings. Therefore, one setting will not suit every compatible bag or tube.

Thin film generally requires a shorter heating cycle. Meanwhile, thicker film or material containing additional layers may need a longer setting.

Begin with a low setting and make small adjustments. Allow each test seal to cool before checking its strength.

Excessive heat may:

• Melt through the film
• Create brittle seals
• Distort the bag opening
• Cause the material to stick
• Damage the protective cover
• Shorten the element’s service life

Insufficient heat may leave gaps or weak sections. Consequently, gradual adjustment produces better results than immediately selecting a high setting.

Impulse Heat Sealer IS500 for Layflat Tubing

Layflat tubing allows users to produce bags in different lengths from one continuous roll. The 500mm sealing capacity makes this model suitable for wider compatible tubing.

Because the machine does not contain a cutter, users must cut the tubing separately.

A typical bag-making process involves:

1. Measuring the required bag length.
2. Cutting the tubing squarely with a suitable tool.
3. Positioning one end across the sealing bar.
4. Completing the first seal.
5. Allowing the sealed end to cool.
6. Filling the newly created bag.
7. Positioning the open end across the machine.
8. Completing and inspecting the second seal.

Allow additional material for the top and bottom seals when calculating the required length. Furthermore, leave enough clearance around the product to prevent it from entering the sealing area.

Sealing Pre-Made Bags

The cutter-free Impulse Heat Sealer IS500 suits compatible pre-made bags because users only need to close the open edge.

Place the product completely inside the bag. Then flatten the unused section so both film layers sit evenly across the sealing bar.

Keep the product away from the sealing line. Otherwise, it may prevent the arm from closing evenly or damage the packaging.

Powders, liquids and small components can contaminate the sealing area. Therefore, leave sufficient unused bag length and keep the open section clean.

Testing Completed Seals

Inspect the completed seal before relying on it for storage, handling or distribution.

A suitable seal should appear reasonably straight and continuous. It should not contain visible gaps, burnt sections, deep wrinkles or trapped product.

Once the seal has cooled, apply gentle pressure to the bag. Then check whether the sealed section opens, peels or allows air to escape.

For valuable, hygiene-sensitive, powdered or liquid products, create a suitable documented testing process. Visual inspection alone may not confirm package integrity.

The machine’s ability to join the film does not automatically mean the finished package is airtight, watertight or leakproof.

Impulse Heat Sealer IS500 Productivity

The stated sealing output exceeds 100 seals per shift. However, actual productivity will depend on:

• Bag dimensions
• Film thickness
• Timer setting
• Cooling time
• Product loading speed
• Operator experience
• Inspection requirements
• Material positioning
• Machine condition
• The complete packing process

Therefore, treat the stated output as a general indication rather than a guaranteed production rate.

For regular packing work, organise the bags and products before sealing. In addition, position the machine at a comfortable working height and keep the surrounding area clear.

Choosing Suitable Bags and Tubing

Use the Impulse Heat Sealer IS500 with compatible heat-sealable polythene packaging that remains within the stated width and thickness limits.

Not every plastic material responds to impulse sealing in the same way. Material composition, recycled content, coatings and laminations can all affect the required setting and finished seal.

Before ordering packaging, consider:

• Bag or tubing width
• Individual layer thickness
• Number of layers across the seal
• Gussets and folds
• Product dimensions
• Product weight
• Sharp corners
• Storage conditions
• Transport requirements
• Required barrier properties
• Food-contact requirements

Choose the packaging according to the complete application rather than the machine capacity alone.

Wide Packaging Applications

The wider 500mm sealing area can accommodate large bags, covers and tubing within the machine’s film-thickness limits.

A single continuous seal may provide a neater result than attempting to join several shorter seals. Moreover, it reduces the risk of leaving an unsealed section between overlapping sealing positions.

However, large or heavy products may pull against the film while the operator completes the seal. Therefore, support the packaged item so its weight does not drag the bag away from the sealing bar.

For bulky products, arrange the workstation so the bag opening remains level with the machine.

Impulse Heat Sealer IS500 Safety Information

Only trained and authorised users should operate the machine. Read the supplied instructions before installation, adjustment, cleaning or maintenance.

Keep hands away from the heating element and sealing surfaces. Additionally, secure loose clothing, jewellery, lanyards and long hair before operating the machine.

Use the heat sealer in a clean, dry and well-lit area. Do not operate it near standing water, combustible materials or flammable vapours.

Disconnect the electrical supply before:

• Cleaning the machine
• Inspecting the heating element
• Replacing consumable components
• Removing trapped material
• Carrying out maintenance
• Moving the machine

Never modify the electrical components or bypass safety features. If the cable, plug, casing or operating mechanism becomes damaged, stop using the machine and arrange an inspection by a suitably competent person.

Cleaning and Maintenance

Regular inspection and cleaning can help the machine create more consistent seals.

First, disconnect the electrical supply and allow the sealer to cool completely. Then remove loose film and contamination using a suitable non-abrasive method.

Do not scrape the sealing area with a metal blade. Otherwise, you could damage the protective covering or heating element.

Inspect the machine regularly for:

• Worn heating elements
• Damaged protective covers
• Loose or displaced components
• Film residue
• Cable or plug damage
• Uneven arm movement
• Inconsistent seals

Heating elements and protective sealing covers are consumable components. Their service life will depend on the timer setting, film thickness, operating frequency and maintenance.

Use compatible replacement parts and follow the applicable fitting instructions.

Important Limitations

The Impulse Heat Sealer IS500 closes compatible packaging but does not automatically confirm the suitability of the complete pack.

Do not assume that a finished seal is:

• Airtight
• Watertight
• Leakproof
• Tamper evident
• Sterile
• Food-contact approved
• Suitable for medical products
• Suitable for hazardous substances
• Suitable for vacuum packing
• Validated for controlled environments
• Approved for every transport method

The machine also lacks an integrated cutter. Therefore, continuous layflat tubing requires a separate suitable cutting method.

Always assess and test the finished packaging arrangement before commercial use.

Storing the Impulse Heat Sealer IS500

Disconnect the machine and allow it to cool before storage.

Keep it in a clean and dry location away from moisture, dust, direct heat and accidental impact. Avoid placing heavy objects on the sealing arm, cable or machine body.

Store replacement heating elements and protective covers in suitable packaging so they remain clean and undamaged.

Before returning the machine to service, inspect it and confirm that every component remains correctly fitted.

Also Known As

Customers may also describe this product as:

• 500mm impulse heat sealer
• IS500 bag sealer
• 500mm polythene bag sealer
• Wide tabletop heat sealer
• Manual impulse sealer
• Straight-bar heat sealer
• Layflat tubing sealer
• Plastic bag sealing machine
• Heat sealer without cutter
• Cutter-free bag sealer
• Bench heat sealer
• Polythene sealing machine

These names may describe machines with different capacities, seal widths and operating features. Therefore, compare the complete specification before ordering.

Food Safety Information

The heat sealer itself does not make packaging suitable for direct food contact.

When packing food, select bags or tubing supported by appropriate food-contact documentation. Additionally, consider the food type, storage temperature, contact duration and intended market.

Keep the machine and sealing area clean to reduce contamination risks. However, the sealing process does not sterilise the packaging or its contents.

Businesses remain responsible for assessing the finished pack and following appropriate food-safety procedures.

PPWR Compliance Information

The EU Packaging and Packaging Waste Regulation, Regulation (EU) 2025/40, establishes requirements for packaging placed on the EU market. Further information appears in the European Commission’s packaging guidance.

The Impulse Heat Sealer IS500 functions as packaging equipment rather than packaging material. However, businesses using it to prepare packaging for the EU market should assess the complete packaging format, including the bags, tubing, labels and other components.

This description does not constitute a declaration of PPWR compliance. Please contact us if you require available product information for a particular application.

Material Testing

Sealing performance varies between different bags and films. Therefore, testing the intended packaging material provides the most reliable way to assess compatibility.

Where practical, send us a sample of your bag or layflat tubing so we can discuss its width, thickness and general suitability.

Please contact us before sending material:

• Email: sales@expresspackaging.co.uk
• Telephone: 0121 622 2347

A successful sample seal provides an initial indication only. Users must still test the complete filled package under the intended storage, handling and transport conditions.

Impulse Heat Sealer IS500 Delivery

We can deliver the Impulse Heat Sealer IS500 throughout mainland UK. We supply it as one complete 500mm cutter-free impulse heat-sealing machine.

Please contact us if you need help comparing this model with a cutter-equipped sealer or a machine with a different sealing capacity.

Impulse Heat Sealer IS500 Illustration Only

Product photographs are for illustration purposes. Bags, layflat tubing, cutting tools, workbenches and other accessories are not included unless the product listing states otherwise.

The appearance, controls, labelling and packaging may vary according to the current production model. Therefore, use the written specification to guide your purchase.

Dimensions, weights and performance figures are nominal or approximate. Actual sealing results and productivity depend on the material, settings, operator and working conditions.