EN ISO 11644:2003
(Main)Leather - Test for adhesion of finish (ISO 11644:1993)
Leather - Test for adhesion of finish (ISO 11644:1993)
Migrated from Progress Sheet (TC Comment) (2000-07-10): Meeting on 971204/05: TD revised (TA/971219) ++ UAP to be launched on ISO 11644 and its amendment when approved (TA/981211)++TCforecasts updated (TC forecasts updating exercise.sj 00-10-25)++ Track changed from ENQ+FV to UAP upon receipt of the document (NT/020926).
Leder - Prüfung der Haftfestigkeit von Zurichtungen (ISO 11644:1993)
1.1 In Abhängigkeit von der Art und Weise, wie das Leder zugerichtet wurde, kann die Haftfestigkeit der Zurich-tung am Leder über die gesamte Fläche oder einen Teil davon so gering sein, dass sich die Zurichtung beim Gebrauch vom Leder löst. Bei aus mehreren Schichten bestehenden Zurichtungen kann die Trennung zwi-schen den Schichten auftreten, zum Beispiel zwischen der Pigmentschicht und der Grundierung. Diese Inter-nationale Norm legt ein Verfahren zur Ermittlung der Haftfestigkeit der Zurichtung am Leder oder der Haftfestigkeit zwischen zwei aneinander grenzenden Schichten der Zurichtung fest.
1.2 Dieses Verfahren ist für alle zugerichteten Leder mit einer glatten Oberfläche gültig, die an einen Träger geklebt werden können, ohne dass der Klebstoff in die Zurichtung eindringt. Einleitende Versuche können notwendig sein, um abzuklären, ob diese Bedingungen gelten.
Cuir - Essai de l'adhésion du finissage (ISO 11644:1993)
Usnje – Preskus vezave dodelavnih nanosov (ISO 11644:1993)
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Usnje – Preskus vezave dodelavnih nanosov (ISO 11644:1993)Leder - Prüfung der Haftfestigkeit von Zurichtungen (ISO 11644:1993)Cuir - Essai de l'adhésion du finissage (ISO 11644:1993)Leather - Test for adhesion of finish (ISO 11644:1993)59.140.30Usnje in krznoLeather and fursICS:Ta slovenski standard je istoveten z:EN ISO 11644:2003SIST EN ISO 11644:2004en01-maj-2004SIST EN ISO 11644:2004SLOVENSKI
STANDARD
SIST EN ISO 11644:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN ISO 11644July 2003ICS 59.140.30English versionLeather - Test for adhesion of finish (ISO 11644:1993)Cuir - Essai de l'adhésion du finissage (ISO 11644:1993)Leder - Prüfung der Haftfestigkeit von Zurichtungen (ISO11644:1993)This European Standard was approved by CEN on 10 July 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 11644:2003 ESIST EN ISO 11644:2004
EN ISO 11644:2003 (E)2CORRECTED
2003-09-24ForewordThis document (EN ISO 11644:2003) has been prepared by Technical Committee CEN/TC 289"Leather", the secretariat of which is held by UNI, in collaboration with the International Union ofLeather Technologists and Chemists Societies (IULTCS).It is based on Method IUF 470 of the International Union of Leather Technologists and ChemistsSocieties.This European Standard shall be given the status of a national standard, either by publication ofan identical text or by endorsement, at the latest by January 2004, and conflicting nationalstandards shall be withdrawn at the latest by January 2004.According to the CEN/CENELEC Internal Regulations, the national standards organizations ofthe following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland andthe United Kingdom.Endorsement noticeThe text of ISO 11644:1993 has been approved by CEN as EN ISO 11644:2003 without anymodifications.NOTE
Normative references to International Standards are listed in annex ZA (normative).SIST EN ISO 11644:2004
EN ISO 11644:2003 (E)3Annex ZA(normative)Normative references to international publicationswith their relevant European publicationsThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to or revisions ofany of these publications apply to this European Standard only when incorporated in it byamendment or revision. For undated references the latest edition of the publication referred toapplies (including amendments).NOTE Where an International Publication has been modified by common modifications, indicatedby (mod.), the relevant EN/HD applies.PublicationYearTitleENYearISO 105-A021993Textiles - Tests for colour fastness -Part A02: Grey scale for assessingchange in colourEN 20105-A021994ISO 24182002Leather - Chemical, physical andmechanical and fastness tests -Sampling locationEN ISO 24182002ISO 24192002Leather - Physical and mechanicaltests - Sample preparation andconditioningEN ISO 24192002ISO 36961987Water for analytical laboratory use -Specification and test methodsEN ISO 36961995SIST EN ISO 11644:2004
SIST EN ISO 11644:2004
INTERNATIONAL STANDARD 11644 IULTCSMJF 470 First edition 1993-12-15 Leather -Test for adhesion of finish Cuir - Essai de I’adhkion du finissage Reference number ISO 11644:1993 (E) llJLTCS/IUF 470, 1993 Edition SIST EN ISO 11644:2004
ISO 11644:1993(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. Esch 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. 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. International Standard ISO 11644 was prepared by the Fastness Tests Commission of the International Union of Leather Technologists and Chemists Societies (IUF Commission, IULTCS). lt is based on IUF 470 published in J. Sec. Leather Tech. Chem., 74, pp. 155-160 (19901, and declared an official method of the IULTCS in September 1991. Annexes A and B of this International Standard are for information only. 0 ISO 1993 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-l 211 Geneve 20 l Switzerland Printed in Switzerland SIST EN ISO 11644:2004
0 60 ISO 11644:1993(E) Introduction A test method similar to that specified in this International Standard, using an expoxy adhesive and metal adherend-plates has been in use in the leather trade for many years, but has never been declared an official method by IULTCS or ISO. The adhesive frequently penetrates thin finish films, thus increasing the adhesion value unrealistically, and it is usually not possible to measure wet adhesion, as there is insufficient adhesion to the metal when water is present. Finishes with insufficient adhesion to the adhesive also occur quite frequently. In spite of these drawbacks, this old method has been used regularly and is referred to in many specifications. The new method specified in this International Standard eliminates most of these drawbacks. The polyurethane adhesive used in the new method contains no solvent at the time of application to the finish and thus has a very high viscosity. lt also stays viscous for only a few seconds, and there is no time for it to penetrate even very thin finishes, unless the finish has open Cracks in it. While adhesion to most finishes is sufficient, a few cases exist in which adhesion is insufficient, and a different adhesive has to be used in such cases. As the adhesive does not penetrate, it is quite possible to test dif- ferent layers of a multi-layer finish separately. Such a finish tan be tested several times until all the layers have been removed from the leather. lt would be advisable for specifications to make allowance for this fact. A Strip of hard PVC is used as the adherend-plate, this giving good ad- hesion under wet conditions. Wet adhesion tan therefore be measured easily. Experience has shown that this “real” wet-adhesion value is often lower, a fact that should also be considered when drawing up specifi- cations based on the new method. SIST EN ISO 11644:2004
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INTERNATIONAL STANDARD Q ISO ISO 11644:1993(E) Leather - Test for adhesion of finish 1 Scope 1.1 Depending on the way the leather has been finished, the adhesion of the finish to the leather tan be so low over the whole area, or part of it, that the finish separates from the leather during use. With finishes consisting of several layers, the Separation may occur between the layers, for example between the pigmented layer and the base coat. This Inter- national Standard specifies a method for measuring the adhesion of the finish to the leather or the ad- hesion between two adjacent layers of the finish. 1.2 The method is valid for all finished leathers with a smooth surface which tan be bonded to an adherend-plate without the adhesive penetrating into the finish. Preliminary experiments may be necessary to determine whether these conditions obtain. 2 Normative references The following Standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All Standards are subject to revision, and Parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent editions of the Standards indicated below. Members of IEC and ISO maintain registers of cur- rently valid International Standards. ISO 105-A02:1993, Textiles - Tests for colour fast- ness - Part A02: Grey scale for assessing Change in colour. ISO 2418:1972, Leather - Laboratory samples - Loca tion and iden tifica tion. ISO 2419: 1972, Leather - Conditioning of test pleces for ph ysical tests. ISO 3696: 1987, Wa ter for analytical laboratory use - Specifica tion and test methods. 3 Definition For the purposes of this International Standard, the following definition applies. 3.1 adhesion: The forte required to pull the leather away from its surface finish layer, the forte being ap- plied steadily, at an angle of about 90” to a rigid adherend-plate to which the finished side of the leather has been bonded. 4 Principle The finished side of part of a Strip of leather is bonded to an adherend-plate by means of heat-reactivated adhesive film. Forte is applied to the free end of the Strip to peel the leather from the finish over a given distance, the finish layer remaining on the adherend- plate together with the film of adhesive. The forte required is measured and reported as the adhesion of the finish to the leather. The test is usually carried out on specimens con- ditioned in a Standard atmosphere before testing. If required, the test may additionally be carried out on wetted specimens or on specimens which have pre- viously been subjected to other agencies or prep- arations. 5 Apparatus and materials 5.1 Tensile-testing machine, operating vertically, incorporating the features specified in 5.1 .l to 5.1.4. 5.1.1 An appropriate range of measurable loads. 5.1.2 A Speed of Separation of the clamps of 100 mm/min + 5 mm/min. - SIST EN ISO 11644:2004
ISO 11644:1993(E) 5.1.3 Suitable means for fixing the adherend-plate holder (5.3) to the hook link (5.4). 5.1.4 Provision for recording a forte-distance dia- gram during the test. 5.2 Adherend-plate, comprising a piece of hard PVC), or other suitable material, measuring 70 mm x 20 mm x 3 mm, to which the leather speci- men is bonded. PVC with a high IR absorption is pre- ferred. 5.3 Adherend-plate holder (see figure i), made for instance of aluminium, for holding the adherend-plate, to which the leather specimen has been bonded, in the lower clamp of the tensile-testing machine. 5.4 Hook link, made for instance of steel wire 1 mm to 2 mm in diameter, about 25 cm long, for at- tathing the free end of the leather specimen to the upper clamp of the tensile-testing machine (see fig- Ures 2 and 3). 5.5 Punch, suitable for making a hole 2 mm to 3 mm in diameter in the leather specimen. Dimensions in millimetres Figure 1 - Adherend-plate holder 0 ISO 5.6 Two-component polyurethane adhesive*), comprising a resin and a hardener. Usually 20 g of solid resin is dissolved in 80 g of ethyl acetate and 5 g of hardener is added, unless otherwise instructed by the manufacturer of the adhesive. The adhesive shall be used within 8 h of addition of the hardener, unless otherwise instructed by the manufacturer of the adhesive. 5.7 IR lamp, capable of heating the adherend-plate (5.2) to 80 “C, or oven, capable of maintaining a tem- perature of 85 “C + 3 “C, kept uniform by an air- circulation fan, for instance. 5.8 Weight-piece, of mass 4,5 kg, with a flat base. 5.9 Temperature-indicating substance31, melting at 80 “C, to indicate when the surface temperature of the adherend-plate
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