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ISO 5628

Paper and board — Determination of bending stiffness — General principles for two-point, three-point and four-point methods

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Organization: ISO
Publication Date: 1 May 2019
Status: active
Page Count: 18
ICS Code (Paper and board): 85.060
scope:

This document specifies three test methods for determining the bending stiffness of paper and paperboard. The test methods differ in the type of loading mode, thus giving rise to the two-point, three-point and four-point bending test methods.

For paper and paperboard in a low thickness range, the two-point bending method and the three-point bending method are suitable.

For corrugated fibreboard and board with a higher thickness, the four-point bending method is recommended.

The measurement conditions are defined in such a way that the test piece is not subjected to any significant permanent deformation during the test, nor is the range of validity of the formulae for calculating the bending stiffness exceeded.

In these bending tests, the test pieces of paper and board are regarded as "beams" as defined by the science of the strength of materials, see Reference [2].

Document History

ISO 5628
May 1, 2019
Paper and board — Determination of bending stiffness — General principles for two-point, three-point and four-point methods
This document specifies three test methods for determining the bending stiffness of paper and paperboard. The test methods differ in the type of loading mode, thus giving rise to the two-point,...
January 15, 2012
Paper and board - Determination of bending stiffness - General principles for two-point, three-point and four-point methods
This International Standard specifies three test methods for determining the bending stiffness of paper and paperboard. The test methods differ in the type of loading mode, thus giving rise to the...
November 15, 1990
Paper and Board - Determination of Bending Stiffness by Static Methods - General Principles
A description is not available for this item.

References

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