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Roughness & Porosity measuring instruments for the paper, paperboard & corrugated industries including paper mills, converters & printers.
AML covers all the main methods including, Bendtsen PPS Parker Print Surf, Sheffield, Bekk and Gurley.
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Surface roughness is a critical physical property for paper and paper based products both coated and non-coated papers usually have a roughness specification. This is important for the papers printability and also the feel of the finished paper.
All the methods on this page use the air leakage method. Where a critically sized measuring head is used and high precision air flow & pressure regulation devices are used to measure the air leaked by the surface finish of the paper. A rough paper will pass more air than a smooth one.