Radio & High Frequency Welding Services

Radio Frequency / High Frequency welding delivers shaped inflatable and containment products with hermetic seams.

When health and safety are on the line, RF welding services ensure a reliable, airtight bond for essential containment devices. Whether you need to contain liquid, gas or gel, radio frequency welding is the flexible containment solution.

Contact one of our expert engineers to determine if RF Welding/Sealing or HF welding services are the right solution for your project.

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How Radio Frequency Welding Services Work

Also known as Radio Frequency and High Frequency welding, this material bonding process uses electromagnetic energy and pressure to permanently fuse polar thermoplastics. It is a bed-and-press type operation that utilizes a specifically shaped electrode which is typically in the configuration of the desired weld.

When the RF energy passes from the upper tooling and through the material the molecules within the parent materials vibrate rapidly causing the two or more layers of material under the tooling to form a single homogeneous material. An important last step in the bonding process is allowing the newly bonded material to cool under pressure, typically 3-5 seconds. After cooling, the newly bonded area is stronger than the parent material.

The RF welding process can only be used with materials of a polar molecular construction, the most common being PVC and Polyurethane.

Combining High Frequency welding together with our ISO Certified Manufacturing process, you get consistent results whether you need 100 pieces or 100,000. Medical equipment like bellows and rebreather system bladders benefit from its clean process that does not employ any adhesives or solvents.

Benefits of RF welding

Choose RF welding when you need

Consistent quality
Clean manufacturing
Liquid, air, or solids containment
Customized shapes and attachments
Seams stronger than the base material
Shear tear/splitting resistance

Which products are made with RF welding?

Here are some examples of products constructed using Radio Frequency technology:

Inflatable bladders
Patient positioning cushions
Protective bellows and way covers
Flotation devices with inflation tubes
Fluid delivery and collection bags
Gel-filled therapy pads
Plating tank liners

Which materials can be radio frequency welded?

Radio Frequency welding creates strong seams using no additional bonding agents. It can be used to fuse a range of flexible materials including:

PVC
Polyurethane
TPU Coated Nylon / Polyester
TPU & TPE films
EVA
PET & PETG
Polyolefin

What Industries use RF welded products?

Industries that benefit from the Radio Frequency bonding process:

Medical
Health Care
Aviation and Aero Space
Safety and Recreation
Oil & Gas Industry
Pharmaceutical
Agricultural

Frequently Asked Questions

What is RF welding?

RF Welding is an electrical process that permanently bonds a select group of like materials together.

How long does Radio Frequency welding last for products?

When Radio Frequency welds are done properly, they will remain welded as long as the original material lasts.

What are the benefits of Radio Frequency welding services?

RF Welding is a clean process that does not include any additives. RF welded seams will last as long as the product itself lasts.

Is RF welding a good fit for my product?

If your product needs to contain liquid or air and is made from an RF sensitive material, RF welding will work well for your product.

What industries use Radio Frequency welding in products?

Health Care, medical equipment manufacturing, aerospace and food processing to name a few.

What is the thinnest material that can be RF/heat welded?

The thinnest material we can work with is .002″ thick.

The RF welding process can only be used with materials of a polar molecular construction, the most common being Polyvinyl chloride (PVC) and Polyurethane, although many other coated materials such as polyester are feasible. Other commonly welded materials are EVA, PET and PETG.

Choosing the right sealing process

The best sealing process for any application is determined by the materials, product size and configuration. When you need to use materials or components that are not RF sensitive, heat sealing services or solvent bonding can be alternative options.

Thermal impulse welding or heat sealing bonds a wider range of plastic films and plastic coated fabrics than RF/HF welding, The results and applications are very similar.

Solvent bonding is an effective fusion process for a substantial range of plastics and is widely used on fluids and air containment devices in the medical and health care industries.

Our materials experts can help you decide which process is right for your custom manufacturing or production project.