EN ISO 17228:2006
(Main)Leather - Tests for colour fastness - Change in colour with accelerated ageing (ISO 17228:2005)
Leather - Tests for colour fastness - Change in colour with accelerated ageing (ISO 17228:2005)
Over time, the surface colour of leather and the leather itself change due to ageing and to the action of the surroundings on the leather. The purpose of the various ageing procedures described in ISO 17228:2005 is to obtain an indication of the changes that could occur when leather is exposed to a certain environment for a prolonged time. The test conditions to be used depend on the type of leather and its intended use.
Leder - Farbechtheitsprüfungen - Farbänderung durch beschleunigtes Altern (ISO 17228:2005)
Im Laufe der Zeit verändert sich die Oberflächenfarbe von Leder und das Leder selbst durch Altern und das Einwirken der Umgebungen auf das Leder. Die verschiedenen Alterungsverfahren in der vorliegenden Internationalen Norm haben den Zweck, einen Hinweis auf Veränderungen zu erhalten, die auftreten könnten, wenn Leder über eine längere Zeit einer bestimmten Umgebung ausgesetzt ist. Die anzuwendenden Prüfbedingungen werden von der Lederart und dem vorgesehenen Verwendungszweck bestimmt.
Cuir - Essais de solidité des teintures - Changement de couleur avec vieillissement accéléré (ISO 17228:2005)
Au fil du temps, la couleur de surface du cuir et le cuir même s'altèrent en raison de leur vieillissement et de l'influence du milieu environnant sur le cuir. Les méthodes d'essai de vieillissement décrites dans l'ISO 17228:2005 ont pour objectif de décrire les dégradations susceptibles de se produire lorsque le cuir est longtemps exposé à un certain milieu. Les conditions d'essai préconisées dépendent du type de cuir et de l'usage auquel il est destiné.
Usnje – Preskušanje obstojnosti barve – Sprememba barve pri preskusu pospešenega staranja (ISO 17228:2005)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2006
Usnje – Preskušanje obstojnosti barve – Sprememba barve pri preskusu
pospešenega staranja (ISO 17228:2005)
Leather - Tests for colour fastness - Change in colour with accelerated ageing (ISO
17228:2005)
Leder - Farbechtheitsprüfungen - Farbänderung durch beschleunigtes Altern (ISO
17228:2005)
Cuir - Essais de solidité des teintures - Changement de couleur avec vieillissement
accéléré (ISO 17228:2005)
Ta slovenski standard je istoveten z: EN ISO 17228:2006
ICS:
59.140.30 Usnje in krzno Leather and furs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 17228
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2006
ICS 59.140.30
English Version
Leather - Tests for colour fastness - Change in colour with
accelerated ageing (ISO 17228:2005)
Cuir - Essais de solidité des teintures - Changement de Leder - Farbechtheitsprüfungen - Farbänderung durch
couleur avec vieillissement accéléré (ISO 17228:2005) beschleunigtes Altern (ISO 17228:2005)
This European Standard was approved by CEN on 19 May 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17228:2006: E
worldwide for CEN national Members.
Foreword
The text of ISO 17228:2005 has been prepared by the Fastness Tests Commission of the International Union
of Leather Technologists Chemists Societies (IUF Commission, IULTCS). It is based on Method IUF 412 of
the International Union of Leather Technologists and Chemists Societies and has been taken over as EN ISO
17228:2006 by Technical Committee CEN/TC 289 “Leather” the secretariat of which is held by UNI.
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 December 2006, and conflicting national standards shall be withdrawn
at the latest by December 2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.
Endorsement notice
The text of ISO 17228:2005 has been approved by CEN as EN ISO 17228:2006 without any modifications.
INTERNATIONAL ISO
STANDARD 17228
IULTCS/IUF
First edition
2005-07-15
Leather — Tests for colour fastness —
Change in colour with accelerated ageing
Cuir — Essais de solidité des teintures — Changement de couleur avec
vieillissement accéléré
Reference number
ISO 17228:2005(E)
IULTCS/IUF 412:2005(E)
©
ISO 2005
ISO 17228:2005(E)
IULTCS/IUF 412:2005(E)
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ii © ISO 2005 – All rights reserved
ISO 17228:2005(E)
IULTCS/IUF 412:2005(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 17228 was prepared by the Fastness Tests Commission of the International Union of Leather
Technologists and Chemists Societies (IUF Commission, IULTCS). It is based on IUF 412 published in J. Soc.
Leather Tech. Chem., 86, pp. 325-331, 2002, and declared an official method of the IULTCS in May 2003.
IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to further the
advancement of leather science and technology. IULTCS has three Commissions, which are responsible for
establishing international methods for the sampling and testing of leather. ISO recognizes IULTCS as an
international standardizing body for the preparation of test methods for leather.
ISO 17228:2005(E)
INTERNATIONAL STANDARD
IULTCS/IUF 412:2005(E)
Leather — Tests for colour fastness — Change in colour with
accelerated ageing
1 Scope
Over time, the surface colour of leather and the leather itself change due to ageing and to the action of the
surroundings on the leather. The purpose of the various ageing procedures described in this International
Standard is to obtain an indication of the changes that could occur when leather is exposed to a certain
environment for a prolonged time. The test conditions to be used depend on the type of leather and its
intended use.
2 Normative references
The following referenced documents are indispensable for the application 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-A01, Textiles — Tests for colour fastness — Part A01: General principles of testing
ISO 105-A02, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour
ISO 105-A03, Textiles — Tests for colour fastness — Part A03: Grey scale for assessing staining
ISO 105-A04, Textiles — Tests for colour fastness — Part A04: Method for the instrumental assessment of
the degree of staining of adjacent fabrics
ISO 105-A05, Textiles — Tests for colour fastness — Part A05: Instrumental assessment of change in colour
for determination of grey scale rating
ISO 2418, Leather — Chemical, physical and mechanical and fastness tests — Sampling location
ISO 2419, Leather — Physical and mechanical tests — Sample preparation and conditioning
3 Principle
A test specimen of leather is exposed to at least one of the three following conditions:
heat (Clause 6);
heat and humidity (Clause 7);
cycles of different temperature and humidity (Clause 8).
One or more of these procedures may take place simultaneously. The change in colour of the specimen is
assessed with the standard grey scale and, if applicable, any changes in the finish or appearance are noted.
These procedures can be used to prepare the leather specimen for other physical or fastness tests after
accelerated ageing.
NOTE Accelerated-ageing tests are for guidance only and they may not necessarily be representative of long-term
use at ambient temperatures.
ISO 17228:2005(E)
IULTCS/IUF 412:2005(E)
The general colour fastness testing principles shall be in accordance with those described in ISO 105-A01,
taking into account that the substrate is leather.
4 Apparatus and materials
Normal laboratory apparatus and the following:
4.1 Oven, fitted with a central rack, capable of maintaining a temperature within ± 2 °C of the defined
temperature. The oven should have a vent, preferably with a circulating fan, and an inside made of inert
materials.
4.2 Climate chamber, fitted with a central rack, capable of maintaining a temperature within ± 2 °C of the
defined temperature and a relative humidity within ± 5 % of the defined relative humidity.
4.3 Suitable system for holding the specimen and preventing contact with the oven or climate chamber
sides.
4.4 Grey scale for assessing change in colour, complying with ISO 105-A02, or an instrumental
system for assessing change in colour, complying with ISO 105-A05.
4.5 Grey scale for assessing staining, complying with ISO 105-A03, or an instrumental system for
assessing staining, complying with ISO 105-A04.
5 Test specimens
5.1 Prior to cutting out specimens, condition the piece of leather in accordance with ISO 2419.
5.2 Cut out two representative test specimens measuring not less than 100 mm × 100 mm.
If the piece of leather available for testing is a whole hide or skin, then the specimens shall be taken in
accordance with standard procedures given in ISO 2418.
NOTE If other properties, such as dimensional change, are to be measured, then larger test specimens, for example
300 mm × 300 mm, may be used.
6 Ageing by heat alone
6.1 Principle
The purpose of this procedure is to simulate prolonged ageing by the application of heat. Two different types
of change can be involved:
a) the change in colour of the substances in the leather;
b) the evaporation of volatile substances or the migration of substances, leading to a change in the colour
and/or other properties of the leather or finish.
As both the exposure time and the temperature can be varied, this procedure can be used for a variety of
purposes, including preparing specimens for other tests.
6.2 Procedure
6.2.1 Pre-heat the oven (4.1) to the desired temperature (see 6.2.3).
2 © ISO 2005 – All rights reserved
ISO 17228:2005(E)
IULTCS/IUF 412:2005(E)
6.2.2 Place one test specimen (the reference specimen) in a place where it is protected from light and kept
under standard conditions (see ISO 2419).
6.2.3 Hang the other test specimen with a clip from, or place it on, the holder (4.3) in the middle of the oven
such that the air has free access to both sides.
Unless specified otherwise, age the specimen under one of the sets of conditions indicated in Table 1.
Table 1 — Ageing by heat
Method Conditions for ageing by heat Recommended use
6A 24 h ± 1 h at 60 °C ± 2 °C General-purpose ageing conditions
6B 24 h ± 1 h at 100 °C ± 2 °C Specifically for yellowing of individual products in undyed leather
6C 72 h ± 2 h at 60 °C ± 2 °C Extended general-purpose ageing
6D
72 h ± 2 h at 100 °C ± 2 °C Ageing of automotive leather
6E Extended ageing of automotive leather
168 h ± 2 h at 90 °C ± 2 °C
6F 168 h ± 2 h at 50 °C ± 2 °C Extended ageing at moderate temperature
6G 168 h ± 2 h at 70 °C ± 2 °C Extended ageing at elevated temperature
The sets of conditions given in Table 1 have been selected to provide a range of conditions for different
applications. If other conditions are used, then they shall be clearly noted in the test report.
6.2.4 After the period of time has elapsed, remove the test specimen from the oven. Allow the specimen to
cool. Then recondition both the test and the reference specimen under standard conditions for 24 h.
6.2.5 Either visually assess the colour difference between the aged specimen and the reference specimen
using the appropriate grey scale in accordance with ISO 105-A02 (4.4) or ISO 105-A03 (4.5) or alternatively,
assess the grey scale colour difference instrumentally in accordance with ISO 105-A05 or ISO 105-A04.
NOTE In the case of undyed leather, the change in colour
...
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