HF welding fuses plastic from the inside out using electromagnetic energy, creating molecularly bonded seams that are stronger, cleaner, and more consistent than those produced by heat or adhesive-based methods.
The technology works exceptionally well with PVC, PU, and other polar thermoplastics, making it the preferred choice for industries that work with tarpaulins, medical products, automotive interiors, packaging, and technical textiles.
Because the energy is applied directly within the material, welding happens quickly and without extended cooling phases. This translates into faster production cycles, better throughput, and reduced downtime on the shop floor.
Schirmacher designs and manufactures welding tools and machines tailored to specific customer requirements. Whether you need a standard sliding table machine or a complex inline automated system, the solution is built around your application.
There are no adhesives, solvents, or additional materials involved in the HF welding process. This keeps the process clean, repeatable, and cost-efficient over long production runs.
With over 50 years of field experience and installations across industries worldwide, Schirmacher machines are known for their durability, low maintenance requirements, and consistent performance in demanding production environments.
High frequency (HF) welding, also known as radio frequency or dielectric welding, is a process that uses electromagnetic energy in the 27 MHz frequency range to heat polar thermoplastics from within and fuse them together. It creates strong, durable seams without the need for adhesives or external heat sources.
HF welding works best with polar thermoplastics such as PVC and polyurethane (PU). These materials respond to high-frequency electromagnetic fields, allowing for clean and reliable fusion. Non-polar materials like polyethylene or polypropylene require a different welding process.
HF welding is used across a wide range of sectors including automotive manufacturing, medical technology, orthopaedics, industrial tarpaulins, packaging, conveyor systems, outdoor and defence equipment, and aviation safety products.
Dynotech offers the full Schirmacher product range, including the B2000, B3000, and B10000 series, the ISM and PTP systems, the TSM step protection welding machines, and inline or automatic feeder configurations. We help you identify the right system based on your specific application and production volume.
Yes. Schirmacher designs and manufactures welding tools specifically for each customer's materials and product geometry. From simple flat seams to complex three-dimensional shapes, the tooling is built to match your exact requirements.
HF welding is generally preferred for larger surface areas, flexible materials, and applications requiring airtight or watertight seams. It produces less mechanical stress than ultrasonic welding and achieves more consistent results across thicker or layered materials compared to standard thermal bonding.
Dynotech offers complete after-sales support including machine installation, operator training, process optimisation, spare parts supply, and ongoing technical assistance. Our India-based team ensures that your production stays running with minimal disruption.
Yes. All Schirmacher machines are manufactured in Germany and comply with relevant CE safety standards and international quality requirements, making them suitable for regulated industries such as medical technology and defence.
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