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Manufacturers welding plastic and industrial fabrics rely upon the quality of PVC welding machinery. As such, today’s assembly lines leverage the power of RF heat sealing technology. Supporting multifaceted industry needs, Thermex-Thermatron offers a variety of dynamic RF Welding Systems. 

With enhanced radio frequency welding equipment capabilities, our technology is designed to make processes more agile. Thermatron RF Sealers produce a strong, uniform seal on a wide range of materials. From packaging and medical to fabric or automotive products, high frequency welding allows you to dial up rapid-fire production speed. RF Welders are typically used to weld or fuse thermoplastic materials such as PVC, polyurethane, PET, and other materials. Thermex-Thermatron offers PVC welders with output power capabilities from 1.2kW to 40kW. Discover how welding plastic with robust heat sealing machines can uplevel the outcome of your materials. 

We can also customize all Thermatron RF Welders based on the unique requirements of an industry’s sealing and heating processes — specifically designed to achieve top efficiency of operations.

RF Welder Products

Learn more about the RF Welders product line:

How does RF Welding work?

Thermex-Thermatron is a leading company in the field of radio frequency (RF) welding machines. Our highly advanced manufacturing facilities utilize cutting-edge technology to produce a wide range of RF welding machines that cater to the diverse needs of our customers. Our machines are designed with precision and undergo rigorous quality checks to ensure top-notch performance and durability. We take pride in our well-trained engineers and technicians who continuously strive to innovate and improve the design and functionality of our products. With a strong commitment to customer satisfaction, we not only manufacture but also offer comprehensive after-sales support to our clients. At Thermex-Thermatron, we are dedicated to providing our customers with reliable, efficient, and versatile RF welding machines that meet the highest standards of quality.


Radio frequency energy is directed through electrodes custom-built to the required shape, making RF Sealing the most versatile of the polymer film sealing methods. RF sealing uses a precise combination of time, pressure, and RF waves to form a stronger, more uniform weld than is possible using other methods. Not all polymers can be dielectrically sealed. 


Essentially, RF Welding works through a five-step process:


Loading Parts 

Joint member is placed into the welding machine to undergo RF heat sealing.

Pressure Application

Through electrodes, pressure is applied to the joint member. Pressure describes force applied to an area. In this case, a fixed electrode at the bottom requires an actuator to drive the upper electrode downwards with the prescribed force.

Electrical Field Application

An electrical field is applied for a designated amount of time while pressure is maintained throughout the process.

Holding Pressure

As pressure is continually applied along with the electrical field, the portions of the joint member directly in contact with the equipment will melt. The liquid polymers will then diffuse into each other at the respective points of contact.

Unloading Parts/Cooling

This process engages through a chemical process of diffusion and solidification to “weld” the members together. At this point, after the joint cools down, the upper electrode is now brought back and parts are unloaded.

RF Welding Applications

We are a leading manufacturer of RF welding machines that are used in a wide range of industries. RF welding, also known as radio frequency welding, is a process that uses high-frequency electromagnetic energy to bond materials together. This technology allows for precise and strong welds, making it ideal for applications in the medical, automotive, and packaging industries. Our machines are used to create products such as medical devices, airbags, and blister packaging, ensuring airtight and leak-proof seals. With our advanced RF welding technology, our machines can also join materials that are traditionally difficult to bond, such as PVC, PET, and multilayer films. We are proud to provide our customers with reliable and efficient machines that meet their specific welding needs.

Benefits of RF Technology

Thermex-Thermatron's state-of-the-art RF welding technology has revolutionized the manufacturing process for various industries. With our advanced equipment, we are able to create strong and durable welds that are essential for industries such as automotive, aerospace, and medical. This technology allows for a wide variety of materials to be welded together, providing a versatile solution for different product designs. Additionally, the precise and efficient nature of RF welding reduces production time and lowers costs for businesses. The consistent and high-quality welds achieved with our technology also ensure reliability and safety for the final products, making it a valuable tool for industries where precision and quality are of utmost importance. Overall, our RF welding technology offers a multitude of benefits, making it a valuable asset for different industries to improve their manufacturing processes. 


The use of high frequency energy has led to a surge in special demands. Both product transport and energy applications need resilient electrical and mechanical devices — primed to meet those changing expectations. As such, the demand for Thermex-Thermatron high frequency welding equipment and systems continues to rise. 

Throughout the world, companies place their trust in the Thermex-Thermatron name for the most reliable RF Welders in the industry. We provide companies with a competitive edge in thermoplastic welding technology. Our engineers have thorough knowledge and expertise — and have applied that understanding to help you deliver the best possible performance and output. 

Strong technical support has always been a top priority for Thermex-Thermatron. Connect with any of our experienced Field Service Engineering and Technical staff — highly qualified and ready to assist you. Our team is available to support you through anything from installation and equipment modification to preventive maintenance and repair. Ask us how we can help you leverage our RF welding equipment, built for you in-house. Additionally, we have the capabilities to help service any non-Thermex-Thermatron equipment.

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