Scanning multi-element process coatings analyzer by EDXRF

Featuring advanced third generation energy dispersive X-ray fluorescence (EDXRF) technology, the Rigaku NEX LS represents the next evolution of scanning multi-element process coatings analysers for web or coil applications.

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Energy dispersive X-ray fluorescence (EDXRF)

To deliver superior analytical performance and reliability, the EDXRF measuring head assembly was derived from the established Rigaku NEX Series high-resolution benchtop instrumentation. With their proven technology, the Rigaku NEX LS delivers rapid, non-destructive, multi-element analyses — for coat weight, coating thickness and/or composition — for elements from aluminum (₁₃Al) through uranium (₉₂U).

Coating thickness and composition

Rigaku NEX LS is specifically designed to service web and coil applications, with the ability to perform multi-element composition, coat weight or coating thickness. The measuring head is mounted on a rigid beam and is equipped with a linear traversing mechanism positioned over a roller so that the head-to-surface distance is constant. Where needed, elemental composition of a coating is measured directly. In contrast, coat weight (or coating thickness) may be measured directly (where counting rate for an element is proportional to thickness) or indirectly by measuring attenuation of some substrate element (where counting rate is negatively correlated to thickness).

Silicone release coatings

Benchtop EDXRF spectrometers have long been a familiar technology for release coatings, converters, vacuum formed plastics manufacturers and other industries using silicone oils as barrier layers, release coatings or denesting agents. Real-time scanning, for tighter process control tolerances, takes EDXRF technology for silicone coatings analysis to the next level. Silicone coatings are applied to plastic and paper substrates to modify the release characteristics of a product (like labels) or packaging. If too little silicone is applied or if there are areas of the web where the silicone coating is missing, the adhesive release properties will be adversely affected in release applications or the denesting characteristics of the vacuum formed plastic will be compromised causing product rejection or disruption in manufacturing and other downstream processes. If too much silicone is applied, the cost of the manufactured roll increases, reducing profitability and in some cases impacting acceptance and performance of the end product.

Coating thickness and composition

In addition to analyzing liquid streams, the Rigaku NEX OL is designed to service web and coil applications, with the ability to perform multi-element composition and/or coating thickness. Typically a head is mounted in a fixed position over a roller so that the head to surface distance is constant.

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Since its inception in 1951, Rigaku has been at the forefront of analytical and industrial instrumentation technology. Today, with hundreds of major innovations to their credit, the Rigaku Group of Companies are world leaders in the fields of general X-ray diffraction (XRD), thin film analysis (XRF, XRD and XRR), X-ray fluorescence spectrometry (TXRF, EDXRF and WDXRF), small angle X-ray scattering (SAXS), protein and small molecule X-ray crystallography, Raman spectroscopy, X-ray optics, semiconductor metrology (TXRF, XRF, XRD and XRR), X-ray sources, computed tomography, nondestructive testing and thermal analysis. With Rigaku's vast understanding of X-ray and its complementary technologies as a foundation, our true strength is seen in an unparalleled willingness to collaborate with customers. By promoting partnerships, dialog, and innovation within the global scientific and industrial communities, Rigaku demonstrates a relentless commitment to providing our client markets with fully integrated solutions. The company and its employees are dedicated to developing and supplying universities, industry, and government labs with the ultimate in customer-focused integrated solutions across a wide variety of disciplines, including structural proteomics, nanoengineering research, general purpose X-ray diffraction (XRD) and spectroscopy (XRF), materials analysis and quality assurance. Whether supplying the tools to create better semiconductor chips, enabling drug discovery, improving production line quality, or exploring the new frontier of nanotechnology, Rigaku products and services lead with innovation. Rigaku employs over 1,100 people worldwide in operations based in Japan, the U.S., Europe and China. We value our people. Our value comes from them. Close collaboration between our users and employees sets the direction and focus of our work, allowing us to address customers' needs and stay close to the market place.


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