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BS ISO 8791-4:2021

BS ISO 8791-4:2021

$142.49

Paper and board. Determination of roughness/smoothness (air leak methods) – Print-surf method

Published By Publication Date Number of Pages
BSI 2021 24
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This document specifies a method for determining the roughness of paper and board using an apparatus which conforms to the Print-surf method, as defined in this document. It is applicable to all printing papers and boards with which it is possible to form a substantially airtight seal against the guard lands of the measuring head.

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
8 5 Apparatus
5.1 Print-surf tester (two types)
9 5.2 Principal components of the system
13 5.3 Measuring system
6 Sampling
7 Condition
8 Preparation of test pieces
9 Procedure
14 9.6.1 Variable-area flowmeter type
9.6.2 Impedance type
10 Calculation
15 11 Precision
12 Test report
16 Annex A Calculation of roughness in micrometres
17 Annex B (normative) Maintenance of Print-surf roughness testers
19 Annex C (normative) Calibration of variable-area flowmeters
21 Annex D (informative) Precision
22 Bibliography

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BS ISO 8791-4:2021
$142.49