The ISTMETZ Group, a global leader in the development, manufacturing, and sale of UV curing systems, has recently received exciting recognition: its Ink Rub Tester (IRT) has been awarded the prestigious International Print Technology Award for 2012–2013. This award highlights the company’s innovation and technical excellence in the printing industry. Beyond its core UV curing components—such as UV lamps, electronic parts, and optical coatings—the ISTMETZ Group continues to expand its product range. The IRT ink friction tester is one of the standout products in this extended product line, showcasing the company’s commitment to quality and precision.
The IRT Ink Friction Tester is designed to evaluate the degree of cure of UV inks and UV varnishes. It allows for quick and repeatable testing of the curing status of these materials on various surfaces such as coated paper, cardboard, or film. Like traditional methods, the IRT can use both scratch and solvent test techniques. However, it offers significant advantages by ensuring a controlled and stable testing environment. This stability enhances the reproducibility of results, making the data more reliable for quality control in real-world production settings.
In the scratch test method, the IRT maintains a consistent pressure and distance throughout the process. The device uses a weighted system to apply a precise contact pressure and limits the movement of the test probe to exactly 50 mm along the surface. This setup ensures uniform friction conditions and makes it easier to compare results over time. Additionally, the IRT can be customized with different probes and application systems depending on the type of material being tested, offering flexibility for various printing applications.
For the solvent test method, the IRT ensures a fixed amount of solvent and a set number of probe movements. A magnetically controlled dosing pump delivers the exact solvent volume, while the probe moves back and forth across the test area a pre-set number of times. This method allows for accurate evaluation of the resistance of UV inks and varnishes to solvents like isopropyl alcohol, ethanol, and ethyl acetate, providing valuable insights into their performance and durability.
The ability to measure resistance to scratching and solvents using these two methods makes the IRT an effective tool for assessing the level of UV ink and varnish curing. Its user-friendly design, precise control over test conditions, and highly repeatable results make the IRT an ideal solution for quality assurance in UV printing processes. Whether you're looking for a reliable testing instrument or want to improve your production standards, the IRT Ink Friction Tester is a smart choice.
This content is excerpted from Keyin Media's "Printing Technology · Technical Labels", Issue No. 2, 2013. For more articles and updates, please visit the journal channel.
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