Gradient Heat Seal Tester For Plastic Packaging ASTM F2029 Lab Heat
Sealer For Coated Oakcaging Film
Application
A Gradient Heat Seal Tester is an essential instrument in the
packaging industry, designed to evaluate the heat-sealing
properties of various materials such as films, laminates, and
packaging components. Ensuring the integrity and strength of heat
seals is crucial in maintaining the quality and effectiveness of
packaging used for a range of products including food,
pharmaceuticals, electronics, and other consumer goods.
The Gradient Heat Seal Tester operates by applying controlled heat
and pressure to a sample material for a set time, simulating the
conditions under which heat seals are formed during the packaging
process. With adjustable temperature, pressure, and time settings,
this tester allows manufacturers to identify the optimal parameters
required for achieving consistent and durable seals.
The term "gradient" in Gradient Heat Seal Tester refers to its
ability to generate a controlled temperature gradient across the
sealing area. This feature ensures that multiple temperature
settings can be tested simultaneously, reducing wait times and
improving overall testing efficiency. As a Multi-Station Heat Seal
Tester, the Gradient Heat Seal Tester enhances productivity by
enabling multiple tests to run at different temperatures
simultaneously.
Standards
The GHS-01 Gradient Heat Seal Tester adheres to ASTM
F2029-16(2021), the standard practices for making laboratory heat
seals to determine the heat sealability of flexible barrier
materials, as measured by seal strength. This standard ensures the
equipment provides reliable and reproducible results in determining
the heat seal properties of packaging materials.
Key Features of the Gradient Heat Seal Tester
Simultaneous Temperature Gradient Testing: The Gradient Heat Seal Tester is capable of creating a
temperature gradient, which allows for testing multiple temperature
settings at the same time, saving valuable time in production
environments.
Precision Control: Equipped with a first-class P.I.D. (proportional integral
derivative) temperature controller, the GHS-01 ensures precise
temperature control and efficient heating, offering a high level of
accuracy in heat sealing.
Aluminum Sealing Jaws: Both the upper and lower sealing jaws are made of high-quality
aluminum, independently heated, ensuring minimal heat loss and
smooth temperature regulation for consistent sealing results.
Accurate Sealing Pressure: The tester employs a three-way guided sealing bar to maintain
uniform sealing pressure during tests, which is critical for
achieving reliable seal strength.
Customization Options: The GHS-01 Gradient Heat Seal Tester allows customization of the
seal jaws in terms of size, shape, and sealing surface/patterns to
suit specific testing requirements.
Safety Features: The tester includes user protection features such as an
anti-scald front cover, a manual and foot switch, and more,
ensuring safe operation during testing.
Main Parameters
| Sealing Temp. | Ambient~250℃ |
| Temp. Gradient | ≤20℃ |
| Deviation | ±0.2℃ |
| Sealing Time | 0.1S~9999S |
| Sealing Pressure | 0.15~0.7 MPa |
| Seal Jaws(mm) | U:40*10 5PCS/L:330 1PCS |
| Gas Input | 0.7 MPa with Ф6 mm Pipe |
| Power | AC 220V 50Hz |
Test Process
The Gradient Heat Seal Tester operates by placing a sample between
two parallel heated sealing jaws with flat surfaces. Once the
desired temperature reaches equilibrium, the upper sealing jaw,
powered by a gas cylinder, is lowered to apply a set pressure on
the sample for the preset duration. After the sealing time
concludes, the upper jaw returns to its original position,
completing the heat seal testing cycle.
Heat Sealing Evaluation
Once the heat sealing process is complete, the seal’s integrity and
strength can be further assessed using methods such as air-leak
tests, dye penetration, visual examination, and microorganism
penetration testing. These evaluations help ensure that the seals
are durable and reliable for use in packaging applications across
various industries.
Why Choose the Gradient Heat Seal Tester?
The Gradient Heat Seal Tester is an advanced, high-precision tool designed to meet the needs of
modern packaging industries. Its ability to conduct
multi-temperature tests simultaneously provides faster results,
making it ideal for industries requiring high throughput. Whether
for food packaging, pharmaceutical products, or electronics, the GHS-01 Gradient Heat Seal Tester ensures that packaging materials meet strict quality control
standards, enhancing the overall integrity and safety of the
product.
