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Heat seal Tester

Heat Seal Tester HST-01 is crafted for the in-depth analysis of heat seal capabilities across a range of materials including films, laminates, polymers, and composites within a laboratory setting. It monitors the three critical sealing parameters—temperature, pressure, and duration—to simulate the sealing operation accurately.
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Application

Heat Seal Tester HST-01  is a lab use equipment designed for examining the heat seal characteristics of various materials, such as plastic films, composite plastic films, paper-plastic combinations, multilayer films, aluminum-coated films, aluminum foils, and foil-laminated composites. It’s also essential for testing the seal integrity of plastic tubes, jelly cup round lids, trays, and coffee capsules.

Test Principle

The heat seal procedure involves positioning a test sample between two heated parallel sealing jaws. Once the set temperature stabilizes, the upper jaw exerts defined pressure for a predetermined period. Upon completion of the sealing time, the jaw reverts, concluding the test.

How is a Heat Seal Tester Helpful?

By finding the ideal combination of heat seal temperature, pressure, and dwell time, this device preempts the optimized settings for production sealing equipment—improving machine efficiency and saving cost.

Technical Features and Benefits

  • PLC Control for Stability: Guarantees industrial-grade steadiness.
  • HMI Interface: Simplifies operations with a touch screen.
  • Aluminum Design: Ensures even heat distribution, minimizing loss.
  • Precision Heating: For optimal sealing results through accurate temperature control.
  • Synchronized Start: Aligns sealing initiation with jaw movement.
  • Uniform Pressure Application: Achieved by a tri-directionally guided sealing bar.
  • Safety Measures: Incorporates anti-scalding protections and manual or foot-switch test initiation.
  • Versatile Sealing Jaws: Tailor-made jaw shapes and sizes to fit specific tests.

Technical Data

Temperature RangeRoom Temp.~300℃
Deviation0.2℃
Sealing Time0.1S~9999S
Sealing Pressure0.15~0.7 MPa
Upper Jaw Sealing Area330*10 mm L*W
Upper Jaw Sealing SurfaceFlat (Standard)
Gas Pressure0.7 MPa
Gas Port SizeФ6 mm
Power SupplyAC 220V 50HZ

FAQ

To optimize heat sealing parameters in plastic film lab testing, a systematic approach focused on testing and adjusting the main variables is essential. These variables include:
    • Temperature: Determine the optimal range that effectively seals the film without burning or weakening it.
    • Pressure: Adjust the sealing pressure to ensure uniform distribution across the sealing surface.
    • Dwell Time: Find the suitable time duration that the pressure and temperature should be applied to create a reliable seal.
    • Sealant Layer Compatibility: Use films with compatible sealant layers that can bond effectively under the chosen conditions.
    • Machine Calibration: Regularly calibrate and maintain the heat seal tester to ensure consistent performance.
To achieve improved heat seal results, focus on the following factors:
  • Material Thickness: Uniform thickness contributes to consistent heat transfer and sealing pressure.
  • Sealant Type: Select a sealant suitable for the specific film type and application requirements.
  • Machine Condition: Ensure all equipment parts function correctly, including the heating element and sealing bar.
  • Environmental Conditions: Monitor and adjust for ambient temperatures and humidity levels which can affect seal properties.
  • Cleanliness: Keep the sealing area free from contaminants that could prevent effective sealing.
ASTM F2029 is the standard practice for determining the acceptability of heat seals created using flexible barrier materials. The standard outlines the test methods required to evaluate the properties of the heat-sealed portion of flexible plastic films and laminates used for packaging. Key aspects include:
  • Preparing Test Specimens: This involves cutting representative samples from the material to be tested.
  • Setting Testing Parameters: The standard provides guidance on setting machine parameters for sealing temperature, pressure, and dwell time.
  • Evaluating Seal Strength: The test measures the force required to separate the sealed area, indicating the seal’s integrity and effectiveness.
    ASTM F2029 provides the framework for validating consistent heat seal performance, ensuring that packaging meets quality control standards and protects the product’s integrity. The Recommended Tester for doing seal strength Tester is Cell Instruments TST-01 Tensile Tester.
*For the most current updates on Cell Instruments’ innovative products, always refer to the latest specifications for any parameter changes.

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FAQ

We are direct manufacturers with our production facility. We control the entire manufacturing process, from design, machining, software, assembly, commissioning, etc., to the final product, ensuring high quality and custom solutions for our clients.

The dispatch time varies based on the product and order size. Typically, we have most common testers on stock and dispatch is available in 1~2 days. It takes us about 3~5 business days to prepare stock. Custom orders may require additional time, which we will communicate during the ordering process.

The most frequent shipping method we use is express courier due to its speed and reliability. Other methods include air freight or sea freight for larger orders, both offering cost-effective solutions for non-urgent deliveries.

Yes, we specialize in customizing products according to our clients’ specifications or a test method. Whether it’s modifying existing products or developing new designs, our team is ready to cater to your unique requirements.

We understand the importance of quality assurance and are happy to provide trial tests for our products. We have the most used testers in our lab that allows you to evaluate the product’s performance and suitability for your needs. Please contact our sales team for more information on setting up a free testing.

In many regions, we offer local service support through our network of partners. These partners are to provide sales, installation, maintenance, and repair services. For specific information about service availability in your area, please contact us directly.

Our products come with a standard one-year warranty covering manufacturing defects. Extended warranty options are also available. Life-long technical support is always available and free of charge. We stand behind our products and are committed to ensuring customer satisfaction through our support services.

We pride ourselves on our research and development capabilities. If you have a specific testing requirement that is not met by existing products, our team of engineers can work with you to develop a custom tester solution that meets your unique needs. Reach out to us with your specifications to start the discussion.

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