Heat Seal Tester

A laboratory precision instrument for simulating production-line heat sealing and accurately measuring the heat sealability of packaging materials.

Adjustable Temperature Accurate Pressure Controllable Time

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Main Applications

The core mission of a heat seal tester is to simulate real heat sealing conditions and evaluate the heat seal performance of materials, ensuring package seal integrity.

Quality Control

As a gatekeeper before packaging materials and finished goods leave the factory, it verifies whether seal strength meets specifications, preventing cracks and leaks during storage and transit.

Process Optimization

Helps manufacturers determine the optimal sealing temperature, pressure, and dwell time before production, boosting line efficiency and first‑pass yield while reducing scrap rates.

R&D Support

Used in material plants, universities, and research institutes for developing new materials and assessing their heat‑sealing adaptability, driving technological innovation.

Working Principle (The Three Heat‑Sealing Elements)

A laboratory heat seal tester precisely controls temperature, pressure, and time to replicate the actual packaging line process.

Set Parameters

According to the material type, set the desired sealing temperature (room temp +5 °C to 300 °C), pressure (0 – 0.8 MPa), and dwell time (0.01 s to 99.99 h).

Place Sample

Position the film or composite specimen between the upper and lower sealing jaws, ensuring proper alignment.

Execute Seal

The jaws close under the set pressure, heat to the target temperature, and maintain for the set time to complete the sealing action.

Test Strength

After cooling the sealed sample, use a tensile tester to measure the peel force or seal strength of the seal area, evaluating the sealing effectiveness.

Best-Selling Models

SN-RF1E Heat Seal Tester

Designed with a single sealing jaw, this model offers independent adjustment of temperature, pressure, and time. It is ideal for routine film and laminate sealing trials, helping you quickly pinpoint the best process parameters at a cost‑effective price.

Entry-Level High Value Easy Operation Single Seal Jaw

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Touchscreen Operation

SN-RFD1E Heat Seal Tester

Featuring a single‑jaw design and a modern touchscreen interface, this unit also provides independent control over temperature, pressure, and time. Perfect for standard films and composites, it delivers reliable results with simplified operation.

Touchscreen Single-Point Sealer User-Friendly

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Testable Materials & Key Parameters

Suitable for a wide range of packaging materials; broad parameter coverage.

Material Types

Plastic films (PE, PP, PET)
Laminates (aluminum‑plastic, paper‑plastic)
Metallized films
Coated paper
Aluminum foil
Biodegradable films
Medical packaging materials

Parameter Range

Temperature: RT+5°C to 300 °C
Pressure: 0 – 0.8 MPa
Time: 0.01s to 99.99h
Control accuracy: ±0.1°C

Application Fields

Widely used in industries that demand high seal quality.

Food Industry

For flexible plastic food packaging, milk cartons, and cooked food pouches, ensuring tight seals and extended shelf life.

Pharmaceutical Industry

Testing seal strength of blister packs, IV bags, etc., to maintain moisture protection and product efficacy throughout the shelf life.

Daily Chemicals

Quality inspection for tubes and sachets of cosmetics and detergents, preventing leakage and product degradation.

R&D & Quality Inspection

Used by material manufacturers, universities, and testing labs for new material development, process validation, and quality supervision, supporting industry standards evolution.

Flagship Model

SN-RF5E Five-Point Heat Seal Tester

This gradient heat sealer features five independent heating jaws, each with its own temperature setting, allowing you to perform multiple sealing tests at different temperatures in a single run – dramatically improving efficiency. Ideal for complex materials like metallized films and high‑barrier laminates. Its intelligent interface meets the stringent demands of advanced R&D and QC.

5 Independent Sealing Jaws Individual Temperature Control Fully Automatic Ultra-High Efficiency Five-Point Heat Seal Tester

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Standards Compliance

We comply with major international and domestic standards, providing reliable testing results for global customers.

ASTM F2029 QB/T 2358 YBB00122003

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