1、May 2012 Translation by DIN-Sprachendienst.English price group 6No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 59.
2、140.30!$|00“1891313www.din.deDDIN EN ISO 2419Leather Physical and mechanical tests Sample preparation and conditioning (ISO 2419:2012)English translation of DIN EN ISO 2419:2012-05Leder Physikalische und mechanische Prfungen Probenvorbereitung und Konditionierung (ISO 2419:2012)Englische bersetzung
3、von DIN EN ISO 2419:2012-05Cuir Essais physiques et mcaniques Prparation et conditionnement des chantillons (ISO 2419:2012)Traduction anglaise de DIN EN ISO 2419:2012-05SupersedesDIN EN ISO 2419:2006-04www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Docum
4、ent comprises 7 pages04.12 DIN EN ISO 2419:2012-05 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy) in collaboration with IULTCS, the International Union of Leather Technologists and Chemi
5、sts Societies. The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-05-51 AA Anforderungen und physikalische Prfverfahren fr Leder und seine Ausgangsprodukte. Amendments This standard differs
6、from DIN EN ISO 2419:2006-04 as follows: a) tropical atmosphere has been included as an alternative standard atmosphere. Previous editions DIN 53303: 1944-02 DIN 53303-1: 1968-05, 1979-02 DIN EN ISO 2419: 2003-10, 2006-04 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 2419 February 2012 IC
7、S 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 chantillons (ISO 2419:2012) Leder - Physikalische und mechanische Prfungen - P
8、robenvorbereitung 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 giving this European Standard the status of a national standard without any
9、 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 official versions (English, French, German). A version in any other languag
10、e 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 of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark,
11、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 Kingdom. Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN
12、All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 2419:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGThis document (EN ISO 2419:2012) has been prepared by Technical Committee
13、 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 Societies”. This European Standard shall be given the status of a national standard, either by publication of an identical text
14、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 that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible
15、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 organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Cze
16、ch 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 the United Kingdom. Foreword 2DIN EN ISO 2419:2012-05 EN
17、 ISO 2419:2012 (E) 1 Scope This International Standard specifies the preparation of leather for physical and mechanical testing together with standard atmospheres for conditioning and testing. It is applicable to all types of dry leather. 2 Terms and definitions For the purposes of this document, th
18、e following terms and definitions apply. 2.1 atmosphere ambient conditions defined by the parameters temperature and relative humidity 2.2 standard atmosphere atmosphere maintained within prescribed tolerances, in which a sample is kept for a given period of time before being subjected to testing 2.
19、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 in the standard atmosphere with free access of moving air to all surfaces 3 Standard atmospheres 3.1 Reference standard atmosphere
20、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, but not equivalent, atmospheres may be used only if the parties involved agree on their use. In case of dispute, the reference stand
21、ard 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 of 65,0 %. 3DIN EN ISO 2419:2012-05 EN ISO 2419:2012 (E) 3.2.3 Tropical standard atmosphere The alternative tropical standard atmos
22、phere shall have a temperature of 27,0 C and a relative humidity of 65,0 %. 3.3 Tolerance zone for standard atmospheres The tolerance for temperature is r 2,0 C. The tolerance for relative humidity is r 5,0 %. 4 Design of press knives The design of press knives is shown in Figure 1. The internal sur
23、faces shall be perpendicular to the plane which contains the cutting edge. The angle formed between the internal and external 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 Ha
24、rdened, knife-grade steel is suitable for press knives. Figure 1 Design of press knives 5 Preparation of test pieces Prepare 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 eithe
25、r surface. If preferred, leather may be conditioned (see Clause 6) before test pieces are prepared. 6 Conditioning Condition 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 ar
26、ound it (see 2.3). Condition the test pieces for a minimum of 24 h prior to testing. The 24 h conditioning is for dry leathers. Leathers with high moisture contents should be dried prior to conditioning. 4DIN EN ISO 2419:2012-05 EN ISO 2419:2012 (E) 7 Testing Carry out the testing in the same standa
27、rd atmosphere as that in which the test piece was conditioned unless otherwise 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 International Standard. 5DIN EN ISO 2419:2012-05 EN ISO 2419:2012 (E)
