Dyne Testing, Dyne Pens and Test Inks

Dyne Testing is another term for measuring surface energy which is a simple quality test that can be done in seconds and lets you know information about the surface including the cleanliness and the likelihood of adhesion for processes such as printing and bonding.

You may see the inks used to measure the energy of a surface referred to by various names including test inks, dyne pens, surface energy inks, quick test pens and jumbo test pens. All work on the technique of placing a known and controlled test fluid onto an unknown surface and observing the results. It helps us to determine the surface free energy – also known as the dyne level and is measured in millinewtons per meter or dynes per centimetre and is commonly referred to as dynes.

Why Use Dyne Testing?

Dyne tests are a great indicator of how your material will perform with adhesion processes like coating, printing or painting; for example, if you need 40 dynes for your process, and your normal 40 test ink results in a failure, you’ll know the print quality will be poor. All of the inks we make are made in accordance with ISO8296, ASTM D2578 and TAPPI T698 standards which are common in manufacturing plants globally.

While the standards focus on polymers being tested, it is very common for this method to be used on any material – especially metals and composite materials. The standards give a standard manufacturing method and a standard measuring technique which is suggested for polymer films. The same method can be applied to any material.

How It Works

The basic principle behind test inks is which has more energy – the solid pulling the liquid towards itself, or the liquid trying to be a perfect sphere and beading up.

The liquid will either spread to form a consistent film across the surface or bead up into droplets.

If the liquid stays as a film, the dyne level is at least the value on the pen/ bottle. Move up to find the point where it beads up, this is a fail. In the video the material passes at 30 dynes and fails at 34 dynes. The surface energy is therefore 30-34 dynes.

Dyne Pens and Dyne Inks on display by Tantec UK

Dyne Inks, Dyne Pens, Type A & Type B

There are a few different types of these quality tools, each with their own reason to use them. If you’re unsure, you can read our blog articles to help guide you to which is best for you.

You can also get in touch to send us samples of your material free of charge so we can look at the required values you need and give some feedback on the different products available.

Other Methods

Dyne testing using pens and inks is a quick and simple method, often used lineside for frequent checks.

Other methods such as contact angle are available but are usually more lab based. There are mobile versions for high performance lineside testing.

These systems give a lot more information about the surface and are very accurate, storing images and data for future reference.

Photo of quality testing for plasma and corona treatment
ebble shop logo on blue background

Buy Online

Dyne Inks and Pens are available to buy online now. Most orders are shipped same or next working day or are available for quick collection from our Worcestershire based factory.

All our products can be bought through our central shop Ebble.Shop

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