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To Determine Suitable Sealing Parameters Of Films — sealing temperature, sealing time and sealing pressure — of plastic films, flexible packaging laminates and multilayer pouches under controlled, repeatable laboratory conditions.
International Equipments is a leading manufacturer, supplier and exporter of Laboratory Heat Sealers in India. Built at our Mumbai facility, our Heat Sealer is a precision table-top instrument used to determine the optimum heat-sealing parameters of plastic films, flexible packaging laminates and multilayer pouches.
Selecting the right sealing parameters is critical for any flexible packaging product. Set the temperature too low and the seal fails; too high and the film burns, melts through or weakens around the seal. Our Heat Sealer gives the film, laminate or pouch developer a repeatable way to evaluate every combination of temperature, dwell time and pressure — producing test seals that are then peel-tested to find the parameter window that gives consistently strong, leak-tight, attractive seams on the production sealing machine.
★ CLIENT USING THIS MODEL
A Laboratory Heat Sealer — also called a Lab Heat Sealer, Bar Sealer, Sealing Tester or Pouch Sealer — is a small bench-top instrument that creates controlled heat-sealed test specimens from plastic film, multilayer laminate or pouch material. Two heated sealing jaws (typically one fixed and one moving) come together onto the film with precisely controlled temperature, pressure (from a pneumatic cylinder) and dwell time. The result is a uniform, repeatable seal — exactly the kind needed to study and optimise sealing parameters before committing to a production-machine setting.
Unlike a production-floor heat sealer (where the sealing parameters are usually fixed by mechanical hardware and difficult to vary), the laboratory Heat Sealer lets the developer or QC engineer dial in any combination of temperature (up to 200°C with 0.1°C resolution in our model) and dwell time. The resulting test seals are then peeled apart on a Peel Tester to determine which parameter window delivers the target seal strength. This evidence-based approach is the standard methodology in every well-equipped flexible packaging R&D and QC lab.
Our Laboratory Heat Sealer is built around two independent temperature zones (one for each jaw — upper and lower) with auto-tuned PID controllers covering ambient to 200°C at 0.1°C resolution. Independent control of upper and lower jaw temperatures is essential when working with multilayer laminates where one side may need a different temperature than the other — for example, an aluminium-foil-backed laminate where the foil side conducts heat faster than the film side.
The sealing action is pneumatic — one fixed jaw and one movable jaw closing under controlled air pressure. Pneumatic actuation (rather than spring or manual lever closure) gives consistent, repeatable sealing pressure on every test seal, which is critical for parameter-window studies. The standard sealing area is 150 mm × 20 mm — wide enough to cut multiple peel-test strips from a single seal, and long enough to mimic the seam geometry of typical pouch and sachet packaging.
Table-top mounting and a 50 mm daylight (the open space between the jaws) make the instrument fast and easy to load — even thick laminate samples slip in without effort. The 230 V single-phase 15-ampere power supply makes the Heat Sealer compatible with any standard Indian or export laboratory power point.
The Heat Sealer is purpose-designed to work hand-in-hand with the Digital Peel Tester. Together they form the standard ASTM F 88 seal-strength testing workflow used in the flexible packaging industry — the Heat Sealer creates controlled, repeatable test seals at any combination of temperature and dwell time, and the Peel Tester (or our Tensile Testing Machine for higher loads) measures the peel force needed to open those seals.
The matched pair gives you a complete sealing-parameter optimisation laboratory, with consistent dimensional compatibility between the test seal and the peel-test specimen. Most flexible packaging QC labs and R&D centres invest in both instruments together. We commonly supply the matched set as a package quotation with a single commissioning visit — please mention this in your enquiry.
Contact International Equipments today for a personalised quotation. Tell us your film type (single-layer film, multilayer laminate, foil-backed pouch) and the test standard you follow (ASTM F 88, ISO 11607) — our team will share pricing, delivery timeline, and the matched Heat Sealer + Peel Tester package option for the complete ASTM F 88 seal-strength workflow.
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