Laboratory Heat Sealer

Laboratory Heat Sealer

Heat Sealer is a consistent tool used to perform sealing on flexible packaging products and other thermoplastic materials using pressure and heat by maintaining high temperatures. Effective Lab Heat Sealer is manufactured under various Test Standards such as ASTM F 2029.

A Laboratory Heat Sealer is an equipment which is used for sealing products, packings, and thermoplastic materials samples. This machine seals the product by using heat.

This can occur with materials having multiple layers, one of which is thermoplastic, or with homogeneous thermoplastic monolayers. Heat sealing machines can be used to fuse dissimilar materials, or to fuse two materials that are similar.

There is a direct contact method of heat sealing in which a constant heating bar is used to heat the specific material.

Model ELI-LHS

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Applications of Heat Sealer

Heat sealing machines have several applications which include: thermally activated adhesives, heat seal connectors, and plastic ports.

In many consumer electronics, heat seal connectors can be used to join LCDs to PCBs. Also, it is used in telecommunication and medical devices.

When heat staking or ultrasonic welding is not an option due to part design requirements or other assembly considerations, heat sealing of products using thermal adhesives is used to hold clear display screens onto consumer electronics products and for other sealed thermo-plastic assemblies or devices.

Heatseal equipment can also be used in the filter media manufacturing and blood test film for the blood. Moreover, in today’s medicine, viruses and some other test strips are used. Films and laminate foils are mostly sealed with heat. Also, in medical wards; bottles, containers and plates are sealed with heat sealing to prevent contamination.

Moreover, in the plastic industry, heat sealer machine for plastic packaging is used. Also, plastic bags and other packaging products are often formed by a heat seal. Fluid bags used in food, medical and bioengineering industries are also sealed with the help of a heat-sealing machine.

Microprocessor based display for accurate test results
EN 31 hard and temper sealing jaw material
Guide rod mechanism for efficient control of sealing
Strong heating jaws for performing tests
Independent adjustment of temperature for upper & lower jaws
Bright LED display for temperature and timer
PID temperature controller for highest level of controls and repeatability
Digital Preset timer
Highly accurate test results under pneumatic pressure control
Single Push button operation after setting PID temperature and time
Strong heating jaws for performing tests
No slippage in case specimen is placed uniformly without any loops

Equipment Range	Ambient to 350ºC
Sealing Temperature Working range	Ambient to 230ºC
Timer	4 Digit Digital
Dwell Heat Seal time	0.1 – 99.9 sec
Sealing Pressure	2 – 6 Bar
Sealing size**	150x 15 mm OR 300x 15 mm
Temperature Controller	4 digit PID
Least Count/Resolution	0.1ºC
Accuracy	± 1ºC
Heat Sensor	Pt-100, Platinum Resistance Temperature Detector (RTD)
Power	220V , Single phase, 50 Hz

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Seal Strength Testing with Laboratory Heat Sealer

The detailed efficiency of Laboratory Heat Sealers is determined by their contracts, specifications, and regulations. Sometimes, periodic subjective evaluations are asked by the quality management system.

For example, a straightforward pull can be used to assess certain seals to identify the failure mechanism and the presence of a bond. Polarized light can be used to better observe certain plastic films by highlighting the heat seal’s birefringence.

On the other hand, seals of sensitive products require thorough protocols of verification and validation. These protocols might use quantitative testing. The testing methods include:

Seal strength per ASTM F88 and F2824

Seal strength tester has a second name which is peel testing. It is done for the measurement of the seal strength with flexible barrier materials. Then, this measurement can be used for the evaluation of opening force as well as the determination of consistency with the seal. Moreover, peel testing is a quantitative measure which can be used in the validation and control of the process.

Burst and Creep per ASTM F1140 and F2054

The package strength and precession are determined with the help of a burst test. The package is pressed until it bursts for conducting the burst test. The data on the burst pressure and the location of the seal failure are included in the results of the burst test. The ASTM F1140 defined that a burst test is covered by this test procedure.

The capacity of a package to withstand pressure for an extended amount of time is determined by the creep test. The pressure is set at roughly 80% of the minimum burst pressure for the creep test.

Vacuum Dye per ASTM D3078

This test is done for the assessment of the integrity of the package. The package is immersed in a clear container that has dye and water in it. Within the container, a vacuum is produced and it is held for a predetermined time. Any packages that have been punctured will draw in dye after the release of a vacuum, exposing the flawed seal.

Faq’s

1: What is a heat sealer used for?

Ans: A heat sealer is a machine which is used to seal packaging, products and thermoplastic materials. In a heat sealer, products are sealed by using heat.

2: What is the heat sealing technique?