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ISO 5628:2019-ed.3.0
Paper and board — Determination of bending stiffness — General principles for two-point, three-point and four-point methods
Translate name
STANDARD published on 14.5.2019
The information about the standard:
Designation standards: ISO 5628:2019-ed.3.0
Publication date standards: 14.5.2019
SKU: NS-948829
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: International technical standard
Category: Technical standards ISO
The category - similar standards:
Annotation of standard text ISO 5628:2019-ed.3.0 :
Description / Abstract: 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].
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