ISO 11540:2014

SLOVENSKI STANDARD
SIST ISO 11540:2015
01-marec-2015
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SIST ISO 11540:1995
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Writing and marking instruments - Specification for caps to reduce the risk of
asphyxiation
Instruments pour l'écriture et le marquage - Spécifications pour les capuchons afin de
réduire le risque d'asphyxie
Ta slovenski standard je istoveten z: ISO 11540:2014
ICS:
97.180 Razna oprema za dom in Miscellaneous domestic and
trgovino commercial equipment
97.190 Otroška oprema Equipment for children
SIST ISO 11540:2015 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ISO 11540:2015

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SIST ISO 11540:2015
INTERNATIONAL ISO
STANDARD 11540
Second edition
2014-03-15
Writing and marking instruments —
Specification for caps to reduce the
risk of asphyxiation
Instruments pour l’écriture et le marquage — Spécifications pour les
capuchons afin de réduire le risque d’asphyxie
Reference number
ISO 11540:2014(E)
©
ISO 2014

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SIST ISO 11540:2015
ISO 11540:2014(E)

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© ISO 2014
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ii © ISO 2014 – All rights reserved

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SIST ISO 11540:2015
ISO 11540:2014(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Terms and definitions . 1
3 Requirements . 1
3.1 General . 1
3.2 Cap size . 1
3.3 Ventilated caps air flow . 2
3.4 Test report . 2
4 Identification . 3
Annex A (normative) Test for air flow . 4
Annex B (informative) Design guidance for pen caps vent area . 6
Bibliography . 7
© ISO 2014 – All rights reserved iii

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SIST ISO 11540:2015
ISO 11540:2014(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 (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 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 10, Technical product documentation.
This second edition cancels and replaces the first edition (ISO 11540:1993), which has been technically
revised.
iv © ISO 2014 – All rights reserved

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SIST ISO 11540:2015
ISO 11540:2014(E)

Introduction
If a child inhales a pen cap it might become lodged below the larynx and block the trachea. The risk of
asphyxiation can be reduced if the pen cap is ventilated or too large to enter the airway. Children have
to be actively discouraged from sucking, chewing, or putting pen caps in their mouths. A way of avoiding
the risk of inhalation of caps of writing and marking instruments is to manufacture products without
caps whenever possible. However, if caps are essential, the provisions of ISO 11540 minimize risk by
specifying the design and performance of ventilated caps which reduce the likelihood of inhalation and
delays asphyxiation pending medical intervention.
ISO/TC 10 recognizes that while it is possible to identify the age range of the children who are most
at risk, it is not possible to identify with certainty any writing instruments with detachable caps that
would never be accessible to children and hence never pose a risk. It is, however, acknowledged that
certain products (i.e. writing and marking instruments which are designed or only intende
...