M00000604
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ISO 8791-3 3rd Edition, August 1, 2017 Paper and board - Determination of roughness/smoothness (air leak methods) - Part 3: Sheffield method
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Availability date: 07/13/2021
Description / Abstract:
This document specifies a method for the determination of the roughness of paper and board using the Sheffield apparatus.
This document is applicable to papers and boards which have Sheffield roughness values between 10 ml/min and about 3 000 ml/min. It is not suitable for soft papers which allow the lands of the test head to indent the surface, or for high air-permeance papers which allow a significant flow of air through the sheet, or for papers which will not lie flat during the test.