prEN ISO 3035

SLOVENSKI STANDARD
01-junij-2024
Valoviti karton - Ugotavljanje ploskovne odpornosti (ISO/DIS 3035:2024)
Corrugated fibreboard - Determination of flat crush resistance (ISO/DIS 3035:2024)
Wellpappe - Bestimmung des Flachstauchwiderstandes (ISO/DIS 3035:2024)
Carton ondulé - Détermination de la résistance à la compression à plat (ISO/DIS
3035:2024)
Ta slovenski standard je istoveten z: prEN ISO 3035
ICS:
85.060 Papir, karton in lepenka Paper and board
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 3035
ISO/TC 6/SC 2
Corrugated fibreboard —
Secretariat: SIS
Determination of flat crush
Voting begins on:
resistance
2024-04-05
Carton ondulé — Détermination de la résistance à la compression
Voting terminates on:
à plat
2024-06-28
ICS: 85.080.30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
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RECIPIENTS OF THIS DRAFT ARE INVITED
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 3035:2024(en)
DRAFT
ISO/DIS 3035:2024(en)
International
Standard
ISO/DIS 3035
ISO/TC 6/SC 2
Corrugated fibreboard —
Secretariat: SIS
Determination of flat crush
Voting begins on:
resistance
Carton ondulé — Détermination de la résistance à la compression
Voting terminates on:
à plat
ICS: 85.080.30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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BE CONSIDERED IN THE LIGHT OF THEIR
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Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 3035:2024(en)
ii
ISO/DIS 3035:2024(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/DIS 3035:2024(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 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).
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/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.
This fourth edition cancels and replaces the third edition (ISO 3035:2011) which has been technically
revised.
The main changes are as follows:
— the note in 5.1 has been deleted because beam deflection compression devices are not in the scope of
ISO 13820 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/DIS 3035:2024(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
DRAFT International Standard ISO/DIS 3035:2024(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, 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 databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
flat crush
maximum crushing force, applied perpendicular to the surface of the fluting structure, sustained before
complete collapse of the structure
3.2
collapse
point where the sidewalls of the flutes are no longer able to support load because they have suffered
compression damage
Note 1 to entry: At this point, the fluting profile appears similar to that of a mushroom (see Figure 2).
3.3
flat crush resistance
flat crush divided by the area of the test piece under the condition of test
Note 1 to entry: The flat crush resistance is expressed in kilopascals.

ISO/DIS 3035:2024(en)
4 Principle
A test piece of corrugated fibreboard is subjected to an increasing force applied perpendicularly to the
surface by a compression tester having two flat and parallel platens, until the fluting collapses.
The maximum force sustained by the test piece is divided by the test piece area.
5 Apparatus
5.1 Flat crush tester, a motor-driven, fixed platen-type compression testing machine in accordance with
ISO 13820, and also calibrated in accordance with ISO 13820.
5.2 Cutting instrument, with a circularly guided knife to cut test pieces with the cut edges clean and
perpendicular to the facings of the corrugated fibreboard. Commonly used test piece areas include
2 2 2
5 000 mm (79,8 mm ± 0,5 mm in diameter), 6 450 mm (90,6 mm ± 0,5 mm in diameter) and 10 000 mm
(112,8 mm ± 0,5 mm in diameter). When the flat crush resistance is expected to exceed the capacity of the
2 2
crush tester on a 5 000 mm sample, a smaller test piece area (commonly 3 220 mm , 64,0 mm ± 0,5 mm in
diameter) may be used.
Test pieces of other uniform shapes may be used, as long as the test area specifications are complied with,
crushing of the edges is avoided when the samples are cut, and fractional flute counts are avoided.
6 Sampling
Sampling shall be carried out in accordance with ISO 186. If
...