1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 2419:2012Leather Physical and mechanical tests Sample preparation and conditioning (ISO 2419:2012)BS EN ISO 2419:2012 BRITISH STANDARDNational forewordThis British Stan
2、dard is the UK implementation of EN ISO 2419:2012. It supersedes BS EN ISO 2419:2006, which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e T C I / 6 9 , F o o t w e a r , l e a t h e r a n d c o a t e d f a b r i c s .A list of organizations
3、 represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978
4、 0 580 71951 6ICS 59.140.30Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 February 2012.Amendments issued since publicationDate T e x t a f f e c t e dEUROPE
5、AN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2419 February 2012 ICS 59.140.30 Supersedes EN ISO 2419:2006English Version Leather - Physical and mechanical tests - Sample preparation and conditioning (ISO 2419:2012) Cuir - Essais physiques et mcaniques - Prparation et conditionnement des chanti
6、llons (ISO 2419:2012) Leder - Physikalische und mechanische Prfungen - Probenvorbereitung und Konditionierung (ISO 2419:2012)This European Standard was approved by CEN on 31 January 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giv
7、ing 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 off
8、icial 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 o
9、f 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
10、 Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 2419:2012:
11、 EBS EN ISO 2419:2012 EN ISO 2419:2012 (E) 3 Foreword This document (EN ISO 2419:2012) has been prepared by Technical Committee CEN/TC 289 “Leather”, the secretariat of which is held by UNI, in collaboration with Technical Committee IULTCS “International Union of Leather Technologists and Chemists S
12、ocieties”. 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 August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility th
13、at some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 2419:2006. According to the CEN/CENELEC Internal Regulations, the national standards organizat
14、ions 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, Portuga
15、l, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN ISO 2419:2012ISO 2419:2012(E) IULTCS/IUP 1 and IUP 3:2012(E) ISO 2012 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standa
16、rds 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 organ
17、izations, 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 i
18、n 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 %
19、 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 2419 was prepared by the European Committee for Standardiza
20、tion (CEN) Technical Committee CEN/TC 289, Leather, in collaboration with the Physical Test Commission of the International Union of Leather Technologists and Chemists Societies (IUP Commission, IULTCS), in accordance with the Agreement on technical co-operation between ISO and CEN (Vienna Agreement
21、). It is based on IUP 1 and IUP 3 originally published in J. Soc. Leather Trades Chemists, 42, p. 382 (1958) and 42, p. 386 (1958) respectively and declared official methods of the IULTCS in 1959. Updated versions were published in J. Soc. Leather Tech. Chem., 82, p. 199 (1998) and further revisions
22、 published in J. Soc. Leather Tech. Chem., 84, p. 241 (2000) and reconfirmed as official methods in March 2001. A further revision of IUP 3 was published in J. Soc. Leather Tech Chem., 83, p. 337 (2002) which was confirmed as an official method in May 2003. IULTCS, originally formed in 1897, is a wo
23、rld-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 sampling and the testing of leather. ISO recognizes IULTCS as an international standard
24、izing body for the preparation of test methods for leather. This fourth edition cancels and replaces the third edition (ISO 2419:2006), which has been technically revised and includes the alternative tropical standard atmosphere (3.2.3). BS EN ISO 2419:2012BS EN ISO 2419:2012INTERNATIONAL STANDARD I
25、SO 2419:2012(E)IULTCS/IUP 1 and IUP 3:2012(E) ISO 2012 All rights reserved 1Leather Physical and mechanical tests Sample preparation and conditioning 1 Scope This International Standard specifies the preparation of leather for physical and mechanical testing together with standard atmospheres for co
26、nditioning and testing. It is applicable to all types of dry leather. 2 Terms and definitions For the purposes of this document, the following terms and definitions apply. 2.1 atmosphere ambient conditions defined by the parameters temperature and relative humidity 2.2 standard atmosphere atmosphere
27、 maintained within prescribed tolerances, in which a sample is kept for a given period of time before being subjected to testing 2.3 conditioning operation designed to bring a sample into a specified condition in relation to temperature and relative humidity by keeping it for a given period of time
28、in the standard atmosphere with free access of moving air to all surfaces 3 Standard atmospheres 3.1 Reference standard atmosphere The reference standard atmosphere shall have a temperature of 23,0 C and a relative humidity of 50,0 %. 3.2 Alternative standard atmospheres 3.2.1 General Alternative, b
29、ut not equivalent, atmospheres may be used only if the parties involved agree on their use. In case of dispute, the reference standard atmosphere shall be used. 3.2.2 Specific standard atmosphere The alternative specific standard atmosphere shall have a temperature of 20,0 C and a relative humidity
30、of 65,0 %. BS EN ISO 2419:2012ISO 2419:2012(E) IULTCS/IUP 1 and IUP 3:2012(E) 2 ISO 2012 All rights reserved3.2.3 Tropical standard atmosphere The alternative tropical standard atmosphere shall have a temperature of 27,0 C and a relative humidity of 65,0 %. 3.3 Tolerance zone for standard atmosphere
31、s The tolerance for temperature is 2,0 C. The tolerance for relative humidity is 5,0 %. 4 Design of press knives The design of press knives is shown in Figure 1. The internal surfaces shall be perpendicular to the plane which contains the cutting edge. The angle formed between the internal and exter
32、nal surfaces of the press knife at the cutting edge shall be approximately 20, and the wedge of this angle shall be of a depth (d) exceeding the thickness of the leather. NOTE Hardened, knife-grade steel is suitable for press knives. Figure 1 Design of press knives 5 Preparation of test pieces Prepa
33、re test pieces by applying the press knife to the grain surface (or simulated grain surface) if present. If no grain or simulated grain is present, apply the press knife to either surface. If preferred, leather may be conditioned (see Clause 6) before test pieces are prepared. 6 Conditioning Conditi
34、on the sample by keeping it in one of the standard atmospheres specified in Clause 3. Support the sample to allow free access of air to all surfaces, keeping the air in motion around it (see 2.3). Condition the test pieces for a minimum of 24 h prior to testing. The 24 h conditioning is for dry leat
35、hers. Leathers with high moisture contents should be dried prior to conditioning. BS EN ISO 2419:2012ISO 2419:2012(E) IULTCS/IUP 1 and IUP 3:2012(E) ISO 2012 All rights reserved 37 Testing Carry out the testing in the same standard atmosphere as that in which the test piece was conditioned unless ot
36、herwise specified in the individual test method. 8 Test report The test report shall include the following: a) reference to this International Standard, i.e. ISO 2419; b) the details of the alternative atmosphere, if used, for conditioning and testing; c) details of any deviations from this Internat
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