NF EN 21974 : 1994

Superseded

PAPER - DETERMINATION OF TEARING RESISTANCE (ELMENDORF METHOD)

Superseded date

06-01-2012

Published date

01-12-2013

Publisher

Association Francaise de Normalisation

Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Apparatus
6 Sampling
7 Conditioning
8 Preparation of test pieces
9 Procedure
10 Calculation and expression of results
11 Precision
12 Test report
Annexes
A Description, adjustment and maintenance of single
tear testers
B Calibration of apparatus
C Units
Figure
A.1 Elmendorf-type tearing apparatus

Describes a method for determining the tearing resistance of paper. Can be used for light boards if the tearing resistance is within the range of the instrument. Does not apply to corrugated fibreboard, but may be applied to the components of such boards. Not suitable for determining the cross direction tearing resistance of highly directional paper. Includes normative references, definitions, principle, apparatus, conditioning, preparation of test pieces, procedure, calculation and expression of results, precision and test report.

DocumentType	Standard
PublisherName	Association Francaise de Normalisation
Status	Superseded
Supersedes	NFQ 03 011 : 1972

Standards	Relationship
I.S. EN 21974:1994	Identical
EN 21974 : 1994	Identical
UNE-EN 21974:1996	Identical
DIN EN 21974:1994-09	Identical
UNI EN 21974 : 1995	Identical
BS EN 21974:1994	Identical

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