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Myths About RF Welding Plastics

Many websites and printed articles have made incorrect statements about RF (HF) welding machines and the materials that RF can and cannot bond together. Plastics Welding Technology wants to set the record straight.

RF Welding involves the concentration of Radio Frequency (aka High Frequency) energy through a metal electrode (a die). Typically, these machines are stabilized to operate at 27.12 MHz.

MYTH #1:
Only polar polymers like Polyvinyl Chloride (PVC) and Polyurethane (PU) and polyolefins with high levels of EVA can be RF welded.

REALITY:
Any RF machine equipped with the PWT RF System is capable of welding polar and non-polar plastics alike. This includes very low-cost and high performance materials.

MYTH #2:
RF machines cannot weld materials thinner than .0055".

REALITY:
PWT RF allows RF machines to weld materials as thin as .00025".

MYTH #3:
The only way to RF weld non-polar plastics is with a buffer system.

REALITY:
Instead of a buffer, PWT RF incorporates a unique durable mechanical catalyst that makes RF energy visible to non-polar materials and weldable in a number substrates, including film, foam, wovens, nonwovens and others. Tearseal and Mandrel Tube welds are possible in many types of materials (buffers cannot do this).

MYTH #4:
A PWT License is too expensive.

REALITY:
PWT licenses are very economical. Typically, license fees range from 5% all the way down to 0.1% of the net selling price of the product. The exact cost is based on the product category being licensed and the volume of product produced. The value that PWT RF provides far surpasses the fees our licensees pay for its use.

MYTH #5:
Plastics Welding Technology is a hard company to work with.

REALITY:
PWT provides RF welding solutions to companies all over the world and offers prospective customers with key development services that include:

In-house Material Weld Testing of customer furnished polymers

Product development, die fabrication and material performance comparisons

Polymer Resource Center allows us to assist in finding the right non-polar material for the job

In addition, PWT offers its customers vital support services that include:

Pilot production at PWT prior to bringing a product on-line in the licensee’s facility

Comprehensive system training

On-site technical service

System improvements allow Licensees to maximize performance of the system

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