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Coating weight measuring: M-Rays, the preferred technology even for opaque materials

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This short video shows a few simple experiments explaining why M-Ray technology is a perfect fit for inline coating weight measuring. Opaque materials such as bariumsulphate, titaniumdioxide or calciumcarbonate do not limit the applicability of the technology. M-Ray technology therefor has a significant advantage compared to X-Ray technologies.


Measuring the weight of challenging coating compounds

Among typical industrial paint additives one commonly finds the compounds of BaSO4, TiO2 or CaCO3. These oxides and salts are typically non solvable in common industrial solvents, making them an excellent additive to create opaque industrial textiles. Instead of dissolving into a paint-solvent they remain in their typical powder state in the paint product, giving rise to a paint suspension. The microscopic particles make it very hard for light to pass through, creating the opaque behavior one typically wants. The physical principle of 'diffuse reflection' explains why these materials are so hard to pass by light and to some extent by X-ray waves as well. Furthermore, the presence of heavy atoms such as Barium (Ba), Titanium (Ti) and Calcium (Ca) are significant blockers for X-ray waves as well. The use of X-ray is therefor not preferred in the fields of quality control for textile coatings or high-density plastic sheets.

Significant advantage compared to X-Ray technologies

Is Hammer-IMS's M-Ray technology able to pass through these difficult compounds? Let's do a test with BaSO4, commonly known as 'Blanc fixe'. BaSO4 is well-known in the medical world as being the best choice to block x-rays completely. BaSO4 is therefor the best candidate to prove the abilities of M-Ray technology. In the video you will now see two experiments.

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