Adopts ISO534:2011 to specify methods for measuring the thickness of paper and board and of calculating the apparent bulk density or the apparent sheet density.
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
4.1
4.2
4.3
5 Apparatus
5.1
5.2
6 Sampling
7 Conditioning
8 Preparation of test pieces
8.1 General
8.2 Single sheet thickness
8.3 Bulking thickness
9 Procedure
9.1 General
9.2 Verification and calibration of micrometer
9.3 Determinations
9.3.1 Determination of single sheet thickness
9.3.2 Determination of bulking thickness
9.3.3 Determination of grammage
10 Calculation and expression of results
10.1 Single sheet thickness
10.1.1
10.1.2
10.1.3
10.1.4
10.2 Bulking thickness
10.2.1
10.2.2
10.2.3
10.2.4
10.3 Apparent density
10.3.1 Apparent sheet density
10.3.2 Apparent bulk density
10.4 Apparent specific volume
10.4.1 Apparent specific sheet volume
10.4.2 Apparent specific bulk volume
11 Test report
Annex A
A.1 General
A.2 Pressure exerted between pressure faces
A.3 Indication error and repeatability of measurement
A.3.1
A.3.2
A.3.3
A.3.4
A.3.5
A.3.6
A.4 Parallelism of pressure faces
A.4.1
A.4.1.1
A.4.2
A.4.3
A.4.4
Annex B
B.1 General
B.2 Precision data from previous edition
B.2.1 Single sheet thickness
B.2.1.1 Repeatability
B.2.1.2 Reproducibility
B.2.2 Bulking thickness
B.2.2.1 Repeatability
B.2.2.2 Reproducibility
B.2.3 Precision of density and specific volume values
