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Accessories: Welding tools and ancillary materials

Every machine requires tools in order to be able to work with it. In HF plastic welding machines, these laser tools are the electrodes, the barrier material for additional electrical insulation, and the tools used to position the product to be welded.

We design and fabricate all necessary tools in-house. This often happens in close collaboration with our customers.

Solutions are sought and high quality and efficient welding and ancillary tools are realised by our experienced toolmakers.

Below are some examples of this:

Ancillaries: Barrier materials

Selection and application of barrier material

A barrier material is almost always used on the table (the lower electrode), and in some cases on the welding electrode (the upper electrode). This barrier material is not heated up by the HF field and has the following functions:

- thermal insulation: preventing heat leaking to the table underneath.

- electrical insulation: reducing the chance of burn-through.

- mechanical: preventing sticking between the material and the table underneath.

There are a number of commonly used barrier materials, the choice of which mainly takes place based on personal preference.

Elephantide	Thermal and electrical insulator. Does not heat up, sticks to welding material.
Melinex	Thermal and electrical insulator. Does not heat up, sticks to welding material.
Teflon cloth and tape	Thermal and electrical insulator. Does not heat up, does not stick to welding material.
Sil-tex	Thermal and electrical insulator. Does not heat up, does not stick to welding material.
Soft-tex	Bridges differences in the thickness of materials to be welded, e.g. with intersecting welds (‘Soft-electrode’).
Flow-tex* and Flow-tape*	Heat up in HF field such that difficult to weld materials can still be welded.

* An exception to the above insulation materials are our Flow-tex and flow-tape. This insulation material insulates both thermally and electrically, but also actually does heat up in the HF field! This can be a solution for generating extra heat with difficult HF-weldable plastics.