Adopts ISO1974:2012, which specifies a method for determining the (out-of-plane) tearing resistance of paper. It can also be used for boards having a low grammage if the tearing resistance is within the range of the instrument.
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
5.2
6 Sampling
7 Conditioning
8 Preparation of test pieces
9 Adjustment and calibration of apparatus
10 Procedure
11 Calculation and expression of results
11.1 Tearing resistance
11.1.1 For readings given as tearing resistance
11.1.2 For readings given as scale readings
11.2 Tear index
11.3 Coefficient of variation
12 Test report
Annex A
A.1 Inspection
A.2 Levelling
A.3 Zero adjustment
A.4 Pendulum friction
A.5 Pointer friction (if applicable)
A.6 Tearing length
Annex B
B.1 Calibration by means of check masses
B.2 Calibration by means of check masses with tongues
