What is a Heat Sealer and for What Purpose it is used?

It is critical in the packaging industry to utilize the appropriate items to convey materials without causing any damage. As a result, the items should be adequately wrapped to ensure that no errors occur during delivery. A lab heat sealer is a flexible testing machine used to perform sealing on flexible packaging materials and thermoplastic materials by applying heat and pressure at high temperatures. In the packaging industry, items are pressed under a certain pressure to ensure they are not harmed during transportation.

With the help of this lab testing equipment, you can create an impermeable seal. This heat sealer forms the right seal so that materials are delivered without any damage. In this blog, we will discuss more about laboratory heat sealers and how this testing equipment benefits the packaging industry.

What Is Heat Sealing?

Heat sealing is a process that uses heat and pressure to bond two or more thermoplastic materials together. It is also known as thermal sealing or heat welding.

How It Works

Heat is applied to the materials, causing them to melt.

Pressure is applied to force the materials together.

The heat source is removed and the materials cool, forming a seal.

What It’s Used For

Packaging: Sealing bags, films, and containers made from thermoplastics.

Medical Devices: Packaging, manufacturing, and assembly of medical devices and equipment.

Electronic Devices: Joining components such as printed circuit boards, liquid crystal displays, and electronic packages.

Types of Heat Sealing

Hot-bar Welding: A direct contact method that uses a heated bar to apply heat to the materials.

Impulse Welding: A method that applies short bursts of energy for sealing.

Continuous Sealing: A method used for ongoing production processes.

Benefits

Creates a secure, airtight, and watertight seal.

Can be used with a wide range of thermoplastic materials.

Introduction to Laboratory Heat Sealers

For a product to be functional and maintain strong barrier characteristics, proper sealing of packaging materials is crucial. Secure sealing extends the shelf life of the packaged item and ensures optimal performance under varying temperature settings. The heat sealer is mainly used in packaging industries and industrial laboratories to seal one thermoplastic to another using heat and pressure.

The direct contact method of heat sealing uses a constantly heated die or sealing bar to apply heat along a specific path to weld the thermoplastics together. This technique is used for various applications, including sealing connectors, thermally activated adhesives, film media, plastic ports, or foil sealing. Typically, the instrument includes a PID controller for high-accuracy temperature control and a dwell timer that can be set for up to 99.9 seconds.

Features of the Seal Testing Instrument

Easy installation.

Low maintenance.

High heating capacity from ambient to 2500°C.

Advanced PID controller for effective temperature control.

Auto tuning function integrated with the PID controller.

Technical Specifications of the heat seal tester

Equipment Range: Ambient to 350ºC

Sealing Temperature Working Range: Ambient to 230ºC

Accuracy: ± 1ºC

Least Count/Resolution: 0.1ºC

Power: 220V, Single phase, 50 Hz

Sealing Size: 150*15 mm or 300*15 mm

Temperature Controller: 4 digit PID

Dwell Heat Seal Time: 0.1 – 99.9 sec

Timer: 4 Digit Digital

Heat Sensor: Pt-100 (Platinum Resistance Temperature Detector)

Sealing Pressure: 2 – 6 Bar

Option to choose one of the two sealing sizes based on requirements.

Additional: Digital Preset Timer and PID temperature controller.

With these features and technical specifications, you can effectively test the heat seal of flexible packaging films. This heat seal tester aids in creating a reliable thermal bond, ensuring that external temperature conditions do not affect the product. Use this lab testing instrument to verify the seal of materials under controlled pressure.

Heat Seal Tester: Ensuring Packaging Integrity

그리고 Heat Seal Tester is an essential tool for guaranteeing packaging integrity. This advanced machinery carefully assesses the material’s ability to retain heat and evaluates seal strength and effectiveness with precise control and analysis. Rely on this tester to uphold quality standards and ensure that products meet industry requirements for security and protection throughout their lifecycle.

Heat Seal Tester, Laboratory Heat Sealer

The Laboratory Heat Sealer can be used to seal specimens for further determination of seal parameters for basic films, laminated films, coating paper, and other heat-sealing laminated films according to the requirements of related standards.

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