Adopts ISO5636-3:2013, which specifies the Bendtsen method for determining the air permeance of paper and board using the Bendtsen apparatus. It is applicable to papers and boards which have air permeances between 0.35μm/(Pa.s) and 15μm/(Pa.s) when tested with the Bendtsen apparatus.
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1
5.2
5.3
5.4
5.5
5.6
5.7
6 Sampling
7 Conditioning
8 Preparation of test pieces
9 Calibration
9.1 Variable-area flow-measuring device
9.2 Electronic flow-measuring device
10 Procedure
11 Calculation and expression of results
11.1 Calculation of air permeance
11.2 Reporting the results
11.3 Standard deviation and coefficient of variation
12 Test report
Annex A
A.1 Checking variable-area flowmeters with capillary tubes
A.2 Checking calibration of variable-area flowmeters
