M00000373
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ISO 8791-2 2nd Edition, September 15, 2013 Paper and board - Determination of roughness/smoothness (air leak methods) - Part 2: Bendtsen method
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Availability date: 07/13/2021
Description / Abstract:
This part of ISO 8791 specifies a method for the determination
of the roughness of paper and board using the Bendtsen
apparatus.
This part of ISO 8791 is applicable to paper and board which
have Bendtsen roughness values between about 5 ml/min and 3 000
ml/min when measured with variable-area type testers and between
about 50 ml/min and 5 000 ml/min when measured with electronic type
testers. It is not suitable for soft papers which allow the land to
make a significant impression on the surface or for
high-air-permeance papers which allow a significant flow of air to
pass through the sheet, or for papers which will not lie flat under
the measuring head.