The fluid contained within the Dyne pens supplied by Dyne Testing is based on the ISO 8296 method for measuring the surface energy of polyethylene film and offers the valve tip applicator type pen and not the “Felt Tip Pen” type which tend to produce too much fluid during testing and create possible inaccuracies. The exact surface energy (Dyne level) can be determined by applying a range of increasing or decreasing values of Dyne test fluid. Should the Dyne test liquid reticulate or draw back into droplets in less than 1 second then the surface energy of the substrate is lower than that of the liquid itself. If the Dyne test fluid remains as a film for 3 seconds, the substrate will have a minimum surface energy of that ink value, expressed in mN/m (Dynes). When the Dyne level test fluid is applied to the surface, the liquid will either form a continuous film on the surface or pull back into small droplets. A chemical reaction between the test fluid and the substrate invalidates results altogether. paper) and causes swelling, results will indicate unrealistically easy wetting. For example, if the test fluid permeates a fibre substrate (e.g. It is critical that the test fluid does not alter the surface properties of the substrate. Determining the surface energy can be easily achieved by use of Surface Energy Test Pens and Inks (Dyne level testing).ĭyne test fluids perform well on most non-absorbent materials. Low surface energy of polymer-based substrates often leads to poor adhesion of inks, glues and coatings. Offering customers a choice of Dyne test solutions, Dyne Testing strive to provide first class, value for money products and services delivered by a great team of people who care.įor optimum adhesion when printing, gluing or coating on various substrates, it is necessary to obtain a high surface energy. Dyne Testing is fast becoming the most well recognised and trusted supplier of Dyne test pens and inks in the UK and overseas for countless applications throughout industry.
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