1、BS EN ISO11644:2009ICS 59.140.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDLeather Test foradhesion of finish (ISO11644:2009)This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 30 June2009. BSI 2009ISBN 978
2、0 580 58151 9Amendments/corrigenda issued since publicationDate CommentsBS EN ISO 11644:2009National forewordThis British Standard is the UK implementation of EN ISO 11644:2009.It supersedes BS EN ISO 11644:2003 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCom
3、mittee TCI/69, Footwear, leather and coated fabrics.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance wi
4、th a British Standard cannot confer immunityfrom legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 11644May 2009ICS 59.140.30 Supersedes EN ISO 11644:2003 English VersionLeather - Test for adhesion of finish (ISO 11644:2009)Cuir - Essai dadhrence du finissage (ISO 11644:2009) L
5、eder - Prfung der Haftfestigkeit von Zurichtungen (ISO11644:2008)This European Standard was approved by CEN on 6 May 2009.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 withou
6、t any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language mad
7、e by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France,
8、Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNG
9、Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 11644:2009: EBS EN ISO 11644:2009EN ISO 11644:2009 (E) 3 Foreword This document (EN ISO 11644:2009) has been prepared by Te
10、chnical Committee CEN/TC 289 “Leather”, the secretariat of which is held by UNI, in collaboration with Technical Committee ISO/TC IULTCS “International Union of Leather Technologists and Chemists Societies“. This European Standard shall be given the status of a national standard, either by publicati
11、on of an identical text or by endorsement, at the latest by November 2009, and conflicting national standards shall be withdrawn at the latest by November 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC sh
12、all not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 11644:2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, B
13、ulgaria, 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 the United Kingdom. BS EN ISO 11644:2009ISO
14、11644:2009(E) IULTCS/IUF 470:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle. 1 5 Apparatus and materials 2 6 Preparation of test specimens 4 7 Conditioning of the test specimens 5 8 Proced
15、ure 6 9 Test report . 9 Annex A (informative) Commercial sources for apparatus and materials . 10 Annex B (informative) Precision data from interlaboratory collaborative trial 11 BS EN ISO 11644:2009ISO 11644:2009(E) IULTCS/IUF 470:2009(E) iv ISO 2009 All rights reservedForeword ISO (the Internation
16、al 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 e
17、stablished 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 standard
18、ization. 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 vo
19、ting. 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 su
20、ch patent rights. ISO 11644/IUF 470 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, in collaboration with the Fastness Tests Commission of the International Union of Leather Technologists and Chemists Societies (IUF Commision, IULTCS), in acc
21、ordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). It is based on IUF 470 published in J. Soc. Leather Tech. Chem., 74, pp. 155-160, 1990, and was declared an official method of the IULTCS in September 1991. IULTCS, originally formed in 1897, is a world-wide
22、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 bod
23、y for the preparation of test methods for leather. This second edition cancels and replaces the first edition (ISO 11644:1993), which has been technically revised. This new version is a general update of the procedures, including an alternative adhesive and electronic evaluation of the force. BS EN
24、ISO 11644:2009ISO 11644:2009(E) IULTCS/IUF 470:2009(E) ISO 2009 All rights reserved vIntroduction Prior to the first edition of this International Standard in 1993, a similar test method to that specified here, using an expoxy adhesive and metal adherent-plates had been in use in the leather trade f
25、or many years, but was never 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 pr
26、esent. Finishes with insufficient adhesion to the adhesive also occur quite frequently. In spite of these drawbacks, this old method was used regularly and was referred to in many specifications. The method specified in this International Standard eliminates most of these drawbacks. The adhesives us
27、ed in this method harden quickly and there is no time for them to penetrate even quite thin finishes unless the finish has open cracks in it. While adhesion to most finishes is sufficient, a few cases still exist in which the adhesion is insufficient and either a different adhesive has to be used or
28、 the surface lightly roughened. As the adhesive does not penetrate, it is quite possible to test different layers of a multi-layer finish separately. Such a finish can be tested several times until all the layers have been removed from the leather. It would be advisable for specifications to make al
29、lowance for this fact. A strip of hard PVC is used as the adherent-plate; this gives good adhesion under wet conditions. Wet adhesion can therefore be measured easily. Experience has shown that this “real” wet-adhesion value is often lower, a fact that must also be considered when drawing up specifi
30、cations based on this method. BS EN ISO 11644:2009BS EN ISO 11644:2009INTERNATIONAL STANDARD ISO 11644:2009(E)IULTCS/IUF 470:2009(E) ISO 2009 All rights reserved 1Leather Test for adhesion of finish 1 Scope This International Standard specifies a method for measuring the adhesion of the finish to le
31、ather or the adhesion between two adjacent layers of the finish. The method is valid for all finished leathers with a smooth surface that can be bonded to an adherent-plate without the adhesive penetrating into the finish. Preliminary experiments might be necessary to determine whether these conditi
32、ons are met. This test method is valid for finished leathers with a finish-coat thickness of at least 15 m. 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,
33、the latest edition of the referenced document (including any amendments) applies. ISO 105-A02, Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colour ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location ISO 2419, Leather Physical an
34、d mechanical tests Sample preparation and conditioning ISO 3696, Water for analytical laboratory use Specification and test methods 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 adhesion force required to pull the leather away from its surf
35、ace finish layer, the force being applied steadily, at an angle of about 90, to a rigid adherent-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 adherent-plate by means of an adhesive film. Force is applied t
36、o the free end of the strip to peel the leather from the finish over a given distance, the finish layer remaining on the adherent-plate together with the film of adhesive. The force required is measured and reported as the adhesion value of the finish. The test is usually carried out on specimens co
37、nditioned in a standard atmosphere before testing. If required, the test may additionally be carried out on wetted specimens or on specimens that have previously been subjected to other treatments. BS EN ISO 11644:2009ISO 11644:2009(E) IULTCS/IUF 470:2009(E) 2 ISO 2009 All rights reserved5 Apparatus
38、 and materials 5.1 Tensile-testing machine, incorporating the following features: a) a force range appropriate to the specimen under test; b) a uniform speed of separation of the jaws of 100 mm/min 5 mm/min; c) suitable means for fixing the adherent-plate holder (5.3) and either the hook link (5.4)
39、or clamp (5.5); d) provision for recording a force-distance diagram during the test. 5.2 Adherent-plate, comprising a piece of hard poly(vinyl chloride) (PVC), or another suitable material, measuring approximately 70 mm 20 mm 3 mm, to which the leather specimen is bonded. PVC with a high infrared (I
40、R) absorption is preferred. 5.3 Adherent-plate holder (see Figure 1), made of any suitable material, for holding the adherent-plate, to which the leather specimen has been bonded, in the lower clamp of the tensile-testing machine. Optionally, the plates can be held firmly by screws through the sides
41、 of the plate holder, see Figure 5. Dimensions in millimetres Figure 1 Adherent-plate holder ( 2 mm for 35 mm, otherwise 1 mm) Either: 5.4 Hook link, made of steel wire 1 mm to 2 mm in diameter, at least 200 mm long, for attaching the free end of the leather specimen to the upper clamp of the tensil
42、e-testing machine (see Figures 2 and 4). The length of the hook link ensures that the angle of peel always remains close to 90. Or: 5.5 Flat-jawed laboratory screw clamp (see Figure 3), suitable for clamping the leather sample with a suitable attachment for connecting the laboratory clamp to the upp
43、er jaw of the tensile-testing machine, see Figure 5. The length of this attachment should be approximately 250 mm long to ensure that the angle of peel remains close to 90. Alternatively, a flat-jawed device fitted directly to a tensile-testing machine, such that a peel angle of 90 can be maintained
44、 throughout the test, may be used. 5.6 Punch, suitable for making a hole 2 mm to 3 mm in diameter in the leather specimen, if using the hook link (5.4). BS EN ISO 11644:2009ISO 11644:2009(E) IULTCS/IUF 470:2009(E) ISO 2009 All rights reserved 3Dimensions in millimetres Figure 2 Hook link Figure 3 Fl
45、at-jawed clamp 5.7 Adhesive, suitable for bonding the leather specimen to the adherent-plate. Types of adhesives found to give satisfactory, reproducible results are a single-component cyanoacrylate adhesive, of the instant adhesive type that hardens and bonds within a very short time to avoid penet
46、ration of the adhesive through the finish layer, and a two-component polyurethane adhesive, comprising a resin and a hardener. For the two-component adhesive, 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 supplier o
47、f the adhesive. The adhesive shall be used within 8 h of adding the hardener, unless otherwise instructed by the supplier. NOTE Examples of suitable adhesives available commercially are given in Annex A. BS EN ISO 11644:2009ISO 11644:2009(E) IULTCS/IUF 470:2009(E) 4 ISO 2009 All rights reserved5.8 I
48、nfrared lamp or oven, capable of heating the adherent-plate (5.2) such that the adhesive is activated. This lamp (oven) is only required if the two-component adhesive is used. 5.9 Weight-piece, of mass approximately 4,5 kg, with a flat base. 5.10 Cleaning solvent, hexane or a mixture of alkanes boil
49、ing within the range of 40 C to 80 C (e.g. petroleum ether), for cleaning the surface of the adherent-plate and the finished side of the leather specimen before bonding. 5.11 Cutter, capable of cutting a specimen of 100 mm 2 mm 10 mm 1 mm from the leather with one stroke. 5.12 Apparatus for wetting the test specimen, comprising the elements specified in 5.12.1 to 5.12.3. This apparatus is only required when wetted leathers are to be tested. 5.12.1 Vacuum-desiccator vessel, or another glass container su
