SIST EN ISO 22568-4:2022

SLOVENSKI STANDARD
01-marec-2022
Nadomešča:
SIST EN ISO 22568-4:2019
Ščitniki nog in stopal - Zahteve in preskusne metode za sestavne dele obutve - 4.
del: Nekovinski vložki, odporni proti prediranju (ISO 22568-4:2021)
Foot and leg protectors - Requirements and test methods for footwear components - Part
4: Non-metallic perforation resistant inserts (ISO 22568-4:2021)
Fuß- und Beinschutz - Anforderungen und Prüfverfahren für Schuhkomponenten - Teil 4:
Nichtmetallische Einlagen mit Widerstand gegen Durchstich (ISO 22568-4:2021)
Protecteurs du pied et de la jambe - Exigences et méthodes d'essais pour les
composants de chaussure - Partie 4: Inserts anti-perforation non métalliques (ISO 22568
-4 :2021)
Ta slovenski standard je istoveten z: EN ISO 22568-4:2021
ICS:
13.340.50 Varovanje nog in stopal Leg and foot protection
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 22568-4
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2021
EUROPÄISCHE NORM
ICS 13.340.50 Supersedes EN ISO 22568-4:2019
English Version
Foot and leg protectors - Requirements and test methods
for footwear components - Part 4: Non-metallic
perforation resistant inserts (ISO 22568-4:2021)
Protecteurs du pied et de la jambe - Exigences et Fuß- und Beinschutz - Anforderungen und
méthodes d'essais pour les composants de chaussure - Prüfverfahren für Schuhkomponenten - Teil 4:
Partie 4: Inserts anti-perforation non métalliques (ISO Nichtmetallische Einlagen mit Widerstand gegen
22568-4 :2021) Durchstich (ISO 22568-4:2021)
This European Standard was approved by CEN on 12 October 2021.

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, 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22568-4:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 22568-4:2021) has been prepared by Technical Committee ISO/TC 94
"Personal safety -- Personal protective equipment" in collaboration with Technical Committee CEN/TC
161 “Foot and leg protectors” the secretariat of which is held by BSI.
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 June 2022, and conflicting national standards shall be
withdrawn at the latest by June 2022.
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 22568-4:2019.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 22568-4:2021 has been approved by CEN as EN ISO 22568-4:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 22568-4
Second edition
2021-12
Foot and leg protectors —
Requirements and test methods for
footwear components —
Part 4:
Non-metallic perforation resistant
inserts
Protecteurs du pied et de la jambe — Exigences et méthodes d'essais
pour les composants de chaussure —
Partie 4: Inserts anti-perforation non métalliques
Reference number
ISO 22568-4:2021(E)
ISO 22568-4:2021(E)
© ISO 2021
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 22568-4:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements for non-metallic perforation resistant inserts . 2
4.1 General . 2
4.2 Resistance to perforation. 2
4.3 Flexing resistance . 3
4.4 Stability against ageing and environmental influence . 3
4.5 Electrical resistance . 3
5 Test methods for the non-metallic perforation tests . 3
5.1 Determination of perforation resistance . 3
5.1.1 Method PL: with conical nail 4,5 mm diameter . 3
5.1.2 Method PS: with conical nail 3,0 mm diameter . 3
5.2 Determination of flexing resistance . 3
5.2.1 Apparatus . 3
5.2.2 Sampling . 4
5.2.3 Test procedure. 5
5.2.4 Results . 5
5.2.5 Test report . 5
5.3 Test methods for the assessment non-metallic perforation resistant inserts
in critical environment . 6
5.3.1 Sampling . 6
5.3.2 Effect of high temperature . 6
5.3.3 Effect of acid sweat . . 6
5.3.4 Effect of alkali sweat . 6
5.3.5 Effect of fuel oil . 6
5.3.6 Results . 6
5.3.7 Test report . 6
5.4 Determination of the electrical resistance . 7
5.4.1 Testing procedure . 7
5.4.2 Test report . 7
6 Marking . . 8
Annex A (normative) Method PL: perforation resistance with the conical nail 4,5 mm
diameter . 9
Annex B (normative) Method PS: Perforation resistance with the conical nail 3,0 mm
diameter .13
Bibliography .18
iii
ISO 22568-4:2021(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 94, Personal safety — Personal protective
equipment, Subcommittee SC 3, Foot protection, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 161, Foot and leg protectors, in accordance with
the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 22568-4:2019), which has been
technically revised
The main changes are as follows:
— Table 2, changes in the type names from X and Y to PL and PS, new requirements (“tent effect” and
minimum value of 950 N);
— new nail, see Figure B.1 (conical shape instead of pyramidal);
— new definition in 3.2;
— Figure B.3 new dimension of the nail;
— Annex C and the reference material have been deleted.
A list of all parts in the ISO 22568 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.
iv
ISO 22568-4:2021(E)
Introduction
ISO 20345, ISO 20346 and ISO 20347 are related to safety, protective and occupational footwear which
define the performance and required properties of the footwear. On introducing these standards all
national standards relating to perforation resistant inserts were withdrawn leaving the manufacturers
of these items with no means of demonstrating the performance of their products. This document has
been prepared to allow manufacturers to demonstrate the type of the perforation resistant inserts
before being inserted into the footwear.
Non-metallic perforation resistant inserts and materials complying with the requirements of this
document are suitable components of “PPE footwear”.
v
INTERNATIONAL STANDARD ISO 22568-4:2021(E)
Foot and leg protectors — Requirements and test methods
for footwear components —
Part 4:
Non-metallic perforation resistant inserts
1 Scope
This document specifies requirements and test methods for the non-metallic inserts with resistance
against mechanical perforation, intended to function as components of PPE footwear (e.g. as described
by ISO 20345, ISO 20346 and ISO 20347).
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 105-E04: 2013, Textiles — Tests for colour fastness — Part E04: Colour fastness to perspiration
ISO 20344, Personal protective equipment — Test methods for footwear
ISO 20345, Personal protective equipment — Safety footwear
ISO 20346, Personal protective equipment — Protective footwear
ISO 20347, Personal protective equipment — Occupational footwear
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 20345, ISO 20346 and
ISO 20347 and the following apply.
ISO and IEC maintain terminological 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
non-metallic perforation resistant insert
non-metallic footwear component placed (or intended to be placed) in the sole complex or used as an
insole simultaneously in order to provide protection against perforation
3.2
“tent effect”
separation between the layers of the test piece during the testing procedure, some layers are perforated
other not giving, the aspect of the tent to the test piece
Note 1 to entry: The procedure is given in Annex A.
ISO 22568-4:2021(E)
4 Requirements for non-metallic perforation resistant inserts
4.1 General
Depending on the footwear construction, the non-metallic perforation resistant inserts could be in
contact with the wearer foot, therefore the requirements of ISO 20345, ISO 20346 and ISO 20347 should
be taken into account (for example abrasion resistance, water absorption, innocuousness).
Perforation resistant material can be tested in accordance with this document, even in an unshaped
status, if it is intended to be cut and/or shaped by the footwear or sole manufacturer. When shaped
non-metallic perforation resistant inserts are tested in accordance with this document, their suitability
to fit into footwear is not assured, because the dimensional conformity to the footwear depends on the
individual shape of each model of footwear.
Table 1 — Summary of requirements and number of samples
Property Subclause Number of samples Status
Non-metallic material: 1 sample
Resistance to
4.2 or mandatory
perforation
Ready –shaped inserts: 1 sample
Non-metallic material: 1 sample
Flexing resistance 4.3 or mandatory
Ready – shaped inserts: 2 different sizes
Stability against ageing Non-metallic material: 2 samples for each treatment
and environmental 4.4 or mandatory
influence Ready –shaped inserts: 2 samples for each treatment
Electrical resistance 4.5 Non-metallic material: 1 sample optional
NOTE For details, see 4.2 to 4.5.
For each of the required measurements performed in accordance with this standard, a corresponding
estimate of the uncertainty of measurement should be evaluated. One of the following approaches shall
be used:
[2]
— a statistical method, e.g. that given in ISO 5725-2 ;
[4]
— a mathematical method, e.g. that given in ISO/IEC Guide 98-3 ;
[5]
— uncertainty and conformity assessment as given in ISO/IEC Guide 98-4 ;
[6]
— JCGM 100 .
4.2 Resistance to perforation
When the non-metallic perforation resistant inserts are tested in accordance with the applicable
methods described in 5.1, they shall meet one of the two types given in Table 2.
ISO 22568-4:2021(E)
Table 2 — Minimum requirements for the perforation force
Types Test method Requirements
Perforation test (see A.4); the four results reported shall be
“pass” with a force of 1100 N
Type PL See 5.
...