SIST EN ISO 7263-2:2019

SLOVENSKI STANDARD
SIST EN ISO 7263-2:2019
01-april-2019
1DGRPHãþD
SIST EN ISO 7263:2011
9DORYLWLSDSLU'RORþDQMHSORVNRYQHRGSRUQRVWLSRODERUDWRULMVNHPRYDORYOMHQMX
GHO%RYDORYOMHQMH,62
Corrugating medium - Determination of the flat crush resistance after laboratory fluting -
Part 2: B-flute (ISO 7263-2:2018)
Wellenrohpapier - Bestimmung des Flachstauchwiderstandes an labormäßig gewelltem
Wellenpapier - Teil 2: B-Welle (ISO 7263-2:2018)
Papier cannelure - Détermination de la résistance à la compression à plat après
cannelage en laboratoire - Partie 2: Cannelure B (ISO 7263-2:2018)
Ta slovenski standard je istoveten z: EN ISO 7263-2:2019
ICS:
85.060 Papir, karton in lepenka Paper and board
SIST EN ISO 7263-2:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 7263-2:2019

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SIST EN ISO 7263-2:2019


EN ISO 7263-2
EUROPEAN STANDARD

NORME EUROPÉENNE

January 2019
EUROPÄISCHE NORM
ICS 85.080.30 Supersedes EN ISO 7263:2011
English Version

Corrugating medium - Determination of the flat crush
resistance after laboratory fluting - Part 2: B-flute (ISO
7263-2:2018)
Papier cannelure - Détermination de la résistance à la Wellenrohpapier - Bestimmung des
compression à plat après cannelage en laboratoire - Flachstauchwiderstandes an labormäßig gewelltem
Partie 2: Cannelure B (ISO 7263-2:2018) Wellenpapier - Teil 2: B-Welle (ISO 7263-2:2018)
This European Standard was approved by CEN on 19 November 2018.

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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7263-2:2019 E
worldwide for CEN national Members.

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SIST EN ISO 7263-2:2019
EN ISO 7263-2:2019 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 7263-2:2019
EN ISO 7263-2:2019 (E)
European foreword
This document (EN ISO 7263-2:2019) 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 July 2019, and conflicting national standards shall be
withdrawn at the latest by July 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 7263:2011.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 7263-2:2018 has been approved by CEN as EN ISO 7263-2:2019 without any
modification.

3

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SIST EN ISO 7263-2:2019

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SIST EN ISO 7263-2:2019
INTERNATIONAL ISO
STANDARD 7263-2
First edition
2018-12
Corrugating medium — Determination
of the flat crush resistance after
laboratory fluting —
Part 2:
B-flute
Papier cannelure — Détermination de la résistance à la compression
à plat après cannelage en laboratoire —
Partie 2: Cannelure B
Reference number
ISO 7263-2:2018(E)
©
ISO 2018

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SIST EN ISO 7263-2:2019
ISO 7263-2:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

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SIST EN ISO 7263-2:2019
ISO 7263-2:2018(E)

Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Sampling . 4
7 Conditioning . 4
8 Preparation of test pieces . 4
9 Procedure. 5
9.1 General . 5
9.2 Testing immediately after fluting . 5
9.3 Testing after 30 min of reconditioning . 5
9.4 Fluting and testing . 5
10 Expression of results . 6
10.1 Flat crush resistance . 6
10.2 Flat crush resistance index . 6
11 Test report . 6
Annex A (informative) Maintenance of fluting rolls (horizontal type) . 8
Annex B (informative) Precision data . 9
Bibliography .11
© ISO 2018 – All rights reserved iii

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SIST EN ISO 7263-2:2019
ISO 7263-2:2018(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 (see 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 (see 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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, Subcommittee
SC 2, Test methods and quality specifications for paper and board.
This document cancels and replaces ISO 7263:2011, which has been technically revised.
This document adds a version of the test method covering the use of a B-flute fluter, expanding the
flexibility of the technical approach using the same general methodology. Prior to this revision of
the method, ISO 7263 allowed only for the use of A-flute equipment. That method is maintained as
ISO 7263-1.
The main changes compared with ISO 7263:2011 are as follows:
— ISO 7263 has been divided into two parts due to technical developments to allow both A-flute
(Part 1) and B-flute (Part 2) performance to be tested;
— Clause 1: the scope has been modified;
— Clause 2: normative references have been changed;
— 5.2: measurements for B-flute have been added;
— 5.3: description of rack and comb has been modified;
— 5.3: Figure 3 has been added;
— 5.5: description of flat crush tester has been modified;
— Clause 7 has been modified;
— Clause 7: this document requires conditioning of samples where testing will be carried out
immediately after fluting, not only where test pieces will be reconditioned before testing;
— Clause 8 has been modified;
iv © ISO 2018 – All rights reserved

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SIST EN ISO 7263-2:2019
ISO 7263-2:2018(E)

— 9.2: for testing immediately after fluting the time between fluted test piece discharge and initial
application of force has been increased to a more realistic level;
— Clause 11: precision with more detailed description of precision data according to ISO/TR 24498
and TAPPI T 1200 has been moved to informative Annex B;
— Test report is now Clause 11 and has been updated;
— Annex B: precision data according to ISO/TR 24498 and TAPPI T 1200 has been added.
A list of all parts in the ISO 7263 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
© ISO 2018 – All rights reserved v

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SIST EN ISO 7263-2:2019
ISO 7263-2:2018(E)

Introduction
The flat crush resistance of laboratory-fluted corrugating medium is regarded as a property indicating
the potential flat crush resistance of corrugated fibreboard made from that medium. The corrugated
medium is fluted by passing it between heated rollers. Two different test procedures are used:
a) the fluted corrugating medium is compressed immediately after fluting (i.e. 15 s to 25 s after
fluting);
b) the fluted corrugating medium is conditioned for 30 min to 35 min under standard laboratory test
conditions before being compressed.
Since considerable advantages are claimed for both procedures and both are widely used, the ISO 7263
series describes both procedures. Procedure a) generally gives considerably higher results than those
obtained with procedure b). The differences in results are claimed to be caused by the lower moisture
content (and thus higher stiffness) of the unconditioned fluted corrugating medium, and/or the change
in flute profile which occurs during the conditioning period.
[6]
ISO 7263-1 describes the testing method for the A-flute geometry.
This document describes the testing method for the B-flute geometry.
The option of using an A- or B-flute geometry is to be determined by the producer and/or the end-use
customer; it is not required for any particular flute structure.
A method for determining the flat crush resistance of manufactured corrugated fibreboard is given in
[3]
ISO 3035 .
vi © ISO 2018 – All rights reserved

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SIST EN ISO 7263-2:2019
INTERNATIONAL STANDARD ISO 7263-2:2018(E)
Corrugating medium — Determination of the flat crush
resistance after laboratory fluting —
Part 2:
B-flute
1 Scope
This document describes a method for the determination of the flat crush resistance of a corrugating
medium after laboratory fluting using a B-flute geometry.
The procedure is applicable to any corrugating medium intended to be used, after fluting, in the
manufacture of corrugated board.
NOTE ISO 7263-1 describes a method to determine the flat crush resistance using an A-flute geometry.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 187, Paper, board and pulps — Standard atmosphere for conditioning and testing and procedure for
monitoring the atmosphere and conditioning of samples
ISO 13820, Paper, board and corrugated fibreboard — Description and ca
...