EN ISO 2758:2014

SLOVENSKI STANDARD
01-november-2014
1DGRPHãþD
SIST EN ISO 2758:2003
3DSLU'RORþHYDQMHUD]SRþQHWUGQRVWL,62
Paper - Determination of bursting strength (ISO 2758:2014)
Papier - Bestimmung des Berstdruckes (ISO 2758:2014)
Papier - Détermination de la résistance à l'éclatement (ISO 2758:2014)
Ta slovenski standard je istoveten z: EN ISO 2758:2014
ICS:
85.060 Papir, karton in lepenka Paper and board
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 2758
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2014
ICS 85.060 Supersedes EN ISO 2758:2003
English Version
Paper - Determination of bursting strength (ISO 2758:2014)
Papier - Détermination de la résistance à l'éclatement (ISO Papier - Bestimmung des Berstdruckes (ISO 2758:2014)
2758:2014)
This European Standard was approved by CEN on 14 June 2014.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2758:2014 E
worldwide for CEN national Members.

Contents Page
Foreword .3
Foreword
This document (EN ISO 2758:2014) has been prepared by Technical Committee ISO/TC 6 “Paper, board and
pulps” in collaboration with Technical Committee CEN/TC 172 “Pulp, paper and board” the secretariat of
which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by February 2015, and conflicting national standards shall be withdrawn
at the latest by February 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 2758:2003.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 2758:2014 has been approved by CEN as EN ISO 2758:2014 without any modification.

INTERNATIONAL ISO
STANDARD 2758
Fourth edition
2014-08-15
Paper — Determination of bursting
strength
Papier — Détermination de la résistance à l’éclatement
Reference number
ISO 2758:2014(E)
©
ISO 2014
ISO 2758:2014(E)
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
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ii © ISO 2014 – All rights reserved

ISO 2758:2014(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Calibration . 2
7 Sampling and preparation of test pieces . 3
8 Procedure. 3
9 Expression of results . 4
10 Test report . 4
Annex A (normative) Dimensions of the clamping system . 5
Annex B (normative) Testing the clamps . 7
Annex C (normative) Clamping pressure . 8
Annex D (normative) Calibration of pressure-measuring system . 9
Annex E (informative) Precision .10
Bibliography .12
ISO 2758:2014(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any
patent rights identified during the development of the document will be in the Introduction and/or on
the ISO list of patent declarations received. www.iso.org/patents
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 6, Paper, board and pulps, Subcommittee SC 2,
Test methods and quality specifications for paper and board.
This fourth edition cancels and replaces the third edition (ISO 2758:2001), of which it constitutes a
minor revision. It has been revised to include precision data.
iv © ISO 2014 – All rights reserved

ISO 2758:2014(E)
Introduction
This International Standard is applicable to papers with bursting strengths in the range 70 kPa to
1 400 kPa.
For materials with bursting strengths equal to or greater than 350 kPa (or 250 kPa for the components
[1]
of combined materials), an alternative method, based on similar principles, is specified in ISO 2759
All components of solid and corrugated fibreboard, irrespective of bursting strength, should be tested
according to ISO 2759.
In view of the overlap between the method for testing papers and boards and in the absence of any
commercial agreement, materials below 600 kPa should be tested according to this International
Standard.
NOTE Due to differences in the specification of the apparatus, tests made on the same material using the
procedures of ISO 2759 and this International Standard will not necessarily give the same results.
INTERNATIONAL STANDARD ISO 2758:2014(E)
Paper — Determination of bursting strength
1 Scope
This International Standard specifies a method for measuring the bursting strength of paper submitted
to increasing hydraulic pressure. It is applicable to paper having bursting strengths within the range
70 kPa to 1 400 kPa. It is not intended to be used for the components (such as fluting medium or
[1]
linerboard) of a combined board, for which the method given in ISO 2759 is more suitable.
In the absence of any commercial agreement as to which method should be used for testing the material,
materials with bursting strengths below 600 kPa should be tested according to this International
Standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 186, Paper and board — Sampling to determine average quality
ISO 187, Paper, board and pulps — Standard atmosphere for conditioning and testing and procedure for
monitoring the atmosphere and conditioning of samples
ISO 536, Paper and board — Determination of grammage
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
bursting strength
maximum pressure developed by the hydraulic system in forcing an elastic diaphragm through a circular
area of the paper when the pressure is applied in the manner described in the method
Note 1 to entry: The indicated bursting pressure includes the pressure required to extend the diaphragm during
the test.
3.2
burst index
bursting strength of paper, in kilopascals, divided by the grammage of the paper determined in
accordance with ISO 536
4 Principle
A test piece, placed over a circular elastic diaphragm, is rigidly clamped at the periphery but free to
bulge with the diaphragm. Hydraulic fluid is pumped at a constant rate, bulging the diaphragm until
the test piece ruptures. The bursting strength of the
...