SIST EN ISO 3035:2025

SLOVENSKI STANDARD
01-oktober-2025
Valoviti karton - Ugotavljanje ploskovne odpornosti (ISO 3035:2025)
Corrugated fibreboard - Determination of flat crush resistance (ISO 3035:2025)
Wellpappe - Bestimmung des Flachstauchwiderstandes (ISO 3035:2025)
Carton ondulé - Détermination de la résistance à la compression à plat (ISO 3035:2025)
Ta slovenski standard je istoveten z: EN ISO 3035:2025
ICS:
85.060 Papir, karton in lepenka Paper and board
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 3035
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2025
EUROPÄISCHE NORM
ICS 85.080.30 Supersedes EN ISO 3035:2011
English Version
Corrugated fibreboard - Determination of flat crush
resistance (ISO 3035:2025)
Carton ondulé - Détermination de la résistance à la Wellpappe - Bestimmung des Flachstauchwiderstandes
compression à plat (ISO 3035:2025) (ISO 3035:2025)
This European Standard was approved by CEN on 24 July 2025.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3035:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 3035:2025) 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 2026, and conflicting national standards
shall be withdrawn at the latest by February 2026.
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 3035:2011.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 3035:2025 has been approved by CEN as EN ISO 3035:2025 without any modification.

International
Standard
ISO 3035
Fourth edition
Corrugated fibreboard —
2025-07
Determination of flat crush
resistance
Carton ondulé — Détermination de la résistance à la
compression à plat
Reference number
ISO 3035:2025(en) © ISO 2025
ISO 3035:2025(en)
© ISO 2025
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 3035:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Sampling . 2
7 Conditioning . 2
8 Preparation of test pieces . 2
9 Procedure . 2
10 Calculation and expression of results . 4
11 Precision . 4
12 Test report . 4
Annex A (informative) Precision . 5
Bibliography . 7

iii
ISO 3035:2025(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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, in collaboration with the European Committee
for Standardization (CEN) Technical Committee CEN/TC 172, Pulp, paper and board, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 3035:2011) which has been technically
revised.
The main changes are as follows:
— 5.1: NOTE has been deleted because beam deflection compression devices are not in the scope of
ISO 13820:2021 anymore;
— Clause 11 “Precision” has been added;
— precision data from Cepi-CTS have been updated.
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.

iv
ISO 3035:2025(en)
Introduction
Fibreboard shipping containers can be subjected to compressive forces in the thickness direction as part
of the manufacturing process, as well as during shipment or storage. These forces can compress the flute
structure and reduce the structural integrity (stacking strength) of the corrugated material. Resistance to
this type of crushing is an important measure of the performance characteristics of the container.

v
International Standard ISO 3035:2025(en)
Corrugated fibreboard — Determination of flat crush
resistance
1 Scope
This document specifies a method for the determination of the flat crush resistance of corrugated fibreboard
used in the manufacture of shipping containers.
This document is applicable to single-faced and single-wall (double-faced) corrugated fibreboard.
This document is not applicable to double-wall (double-double-faced) corrugated fibreboard and to
microflute corrugated fibreboard, since the end-point of the test is not clearly defined or observable.
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 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 13820:2021, Paper, board and corrugated fibreboard — Description and calibration of fixed platen
compression-testing equipment
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology
...