1、May 2017 English price group 9No 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 59.140.30!%eBt“2663181www.din.deDIN E
2、N ISO 17232Leather Physical and mechanical tests Determination of heat resistance of patent leather (ISO 17232:2017);English version EN ISO 17232:2017,English translation of DIN EN ISO 17232:2017-05Leder Physikalische und mechanische Prfungen Bestimmung der Wrmebestndigkeit von Lackleder (ISO 17232:
3、2017);Englische Fassung EN ISO 17232:2017,Englische bersetzung von DIN EN ISO 17232:2017-05Cuir Essais physiques et mcaniques Dtermination de la rsistance la chaleur des cuirs vernis (ISO 17232:2017);Version anglaise EN ISO 17232:2017,Traduction anglaise de DIN EN ISO 17232:2017-05SupersedesDIN EN I
4、SO 17232:200904www.beuth.deDocument comprises 14 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.05.17 DIN EN ISO 17232:2017-05 2 A comma is used as the decimal marker. National foreword This document (EN ISO 17232:2017) has be
5、en prepared by Technical Committee IULTCS “International Union of Leather Technologists and Chemists Societies” in collaboration with Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy). The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DI
6、N Standards Committee Materials Testing), Working Committee NA 062-05-51 AA “Requirements and physical test methods of leather and its starting products”. The “Zwik method” described in Clause 5 and A.3 is also known as the “Zwick”-Verfahren in Germany. The DIN Standards corresponding to the Interna
7、tional Standards referred to in this document are as follows: ISO 2418 DIN EN ISO 2418 ISO 2419 DIN EN ISO 2419 Amendments This standard differs from DIN EN ISO 17232:2009-04 as follows: a) Clause 3 “Terms and definitions” has been included and therefore, all subsequent clauses have been renumbered;
8、 b) in 3.4 (now 4.4) and 4.4 (now 5.4), the test conditions for the procedure have been rendered more precise; c) in 3.4.4 (now 4.4.4), the distinction between standard test conditions and extended test conditions has been included; d) in 3.5 e) (now 4.5 e) and 4.5 d) (now 5.5 d), the reference to a
9、 specific standard atmosphere has been deleted; e) in Annex A, sources for apparatuses for method B have been included; f) the standard has been editorially revised. Previous editions DIN EN 13540: 2003-04 DIN EN ISO 17232: 2009-04 DIN EN ISO 17232:2017-05 3 National Annex NA (informative) Bibliogra
10、phy DIN EN ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location DIN EN ISO 2419, Leather Physical and mechanical tests Sample preparation and conditioning DIN EN ISO 17232:2017-05 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
11、 EN ISO 17232 February 2017 ICS 59.140.30 English Version Leather - Physical and mechanical tests - Determination of heat resistance of patent leather (ISO 17232:2017) Cuir - Essais physiques et mcaniques - Dtermination de la rsistance la chaleur des cuirs vernis(ISO 17232:2017) Leder - Physikalisch
12、e und mechanische Prfungen - Bestimmung der Wrmebestndigkeit von Lackleder (ISO 17232:2017) This European Standard was approved by CEN on 5 January 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the sta
13、tus 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 official versions (English, French, G
14、erman). 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 of Austria, Belgium, Bulgaria, Croa
15、tia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turk
16、ey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. R
17、ef. No. EN ISO 17232:2017 EEuropean foreword .31 Scope . 52 Normative references 53 Terms and definitions . 54 Method A Lastometer method . 54.1 Principle 54.2 Apparatus 54.3 Sampling and sample preparation .64.4 Procedure 64.5 Test report . 75 Method B Zwik method. 75.1 Principle 75.2 Apparatus 75.
18、3 Sampling and sample preparation . 85.4 Procedure 95.5 Test report . 9Annex A (informative) Sources of apparatus 10Contents PageDIN EN ISO 17232:2017-05 EN ISO 17232:2017 (E) 2Foreword .4European foreword This document (EN ISO 17232:2017) has been prepared by Technical Committee IULTCS “Internation
19、al Union of Leather Technologists and Chemists Societies“ in collaboration with 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
20、the latest by August 2017, and conflicting national standards shall be withdrawn at the latest by August 2017. 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 for identifying any or
21、 all such patent rights. 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, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic
22、of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17232:2017 has been
23、 approved by CEN as EN ISO 17232:2017 without any modification. DIN EN ISO 17232:2017-05 EN ISO 17232:2017 (E) 3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards
24、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 pa
25、rt in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particu
26、lar the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of t
27、his document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see ww
28、w .iso .org/ patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to
29、 the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to further the advancement of leather science and techno
30、logy. 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 17232 was prepared by the European Committee for
31、Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of which is held by UNI, 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 technica
32、l cooperation between ISO and CEN (Vienna Agreement).It is based on IUP 38 published in J. Soc. Leather Tech. Chem., 84 (7), p. 403, (2000), and declared an official method of the IULTCS in March 2001.This second edition cancels and replaces the first edition (ISO 17232:2006), which has been technic
33、ally revised with the following changes: the test conditions in 4.4.4 have been clarified; a reference to specific standard conditions in 4.5 e) and 5.5 d) has been removed.DIN EN ISO 17232:2017-05 EN ISO 17232:2017 (E) 4 1 ScopeThis document specifies two methods for determining the heat resistance
34、 of patent leather.Method A makes use of a modified lastometer, while Method B uses the “Zwik” apparatus. Both methods are applicable to patent leathers for all end uses.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitu
35、tes requirements 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 2418, Leather Chemical, physical and mechanical and fastness tests Sampling locationISO 2419, Leather
36、 Physical and mechanical tests Sample preparation and conditioningEN 15987, Leather Terminology Key definitions for the leather trade3 Terms and definitionsFor the purposes of this document, the terms and definitions given in EN 15987 apply.ISO and IEC maintain terminological databases for use in st
37、andardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp4 Method A Lastometer method4.1 PrincipleA perforated test piece is distended by a specified amount. The surface is heat
38、ed and any damage to the patent finish is noted.4.2 Apparatus4.2.1 Test machine, including the parts described in 4.2.1.1 to 4.2.1.4.NOTE An example of a suitable apparatus available commercially is given in Annex A.4.2.1.1 Clamp, capable of holding the test piece around its edge leaving free a cent
39、ral circular area of diameter (25,0 0,1) mm. The design of its clamping system shall ensure that the test piece does not slip under the test conditions and neither stretches nor compresses the central area as it is clamped. The boundary between the free and clamped area shall be sharply defined.4.2.
40、1.2 Plunger, terminating in a steel ball of diameter (21,0 0,1) mm.DIN EN ISO 17232:2017-05 EN ISO 17232:2017 (E) 5 4.2.1.3 Mechanism for thrusting the steel ball, without rotation against the test specimen.4.2.1.4 Mechanism for monitoring the distension of the steel ball, (travel from zero) to an a
41、ccuracy of 0,05 mm.4.2.2 Press knife, conforming to the requirements of ISO 2419 for cutting test pieces of suitable dimensions for the test machine.4.2.3 Sewing machine needle, sharp and undamaged, PCL size 80, either fitted into holder suitable for use by hand or into sewing machine.NOTE Other siz
42、ed needles are used if they are more appropriate to the sewing used in the shoe production.4.2.4 Hot air blower, capable of maintaining a temperature of (100 5) C or (125 5) C.4.2.5 Temperature measuring device, reading to 1 C.4.2.6 Stopwatch, reading to 1 s.4.2.7 Soft rubber mat, minimum thickness
43、10 mm.4.3 Sampling and sample preparation4.3.1 Sample in accordance with ISO 2418. Cut three test pieces by applying the press knife (4.2.2) to the patent surface.If there is a requirement for more than two hides or skins to be tested in one batch, then only one sample needs to be taken from each hi
44、de or skin, provided that the overall total is not less than three test pieces.4.3.2 If the test piece is to be perforated by hand, place the test piece on the soft rubber mat (4.2.7) with the patent surface uppermost. Using the sewing machine needle (4.2.3) fitted into a holder, pierce a hole verti
45、cally through the centre of the test piece so that the hole is within 1,0 mm of the centre. Pierce four further holes through the test piece with each hole (5,0 0,5) mm from the first hole so that the first holes form a simple (Greek) cross. Ensure that the needle penetrates through the leather into
46、 the soft rubber mat.4.3.3 If the test piece is to be perforated by machine, perforate through the centre using the needle fitted into a sewing machine (4.2.3) running at normal speed but without the thread and set at 6 stitches/10 mm.4.3.4 Condition the test piece in accordance with ISO 2419. Carry
47、 out the test in the standard atmosphere.4.4 Procedure4.4.1 Set the instrument so that the plunger is set at zero or minimum distension.4.4.2 Tightly clamp the test piece into the instrument so that the ball end of the plunger (4.2.1.2) acts on the reverse side of the test piece.4.4.3 Force the ball
48、 end of the plunger into the test piece until the test piece is distended by 7,5 mm 0,05 mm as shown on the distension scale (4.2.1.4). Examine the test piece and note any damage.DIN EN ISO 17232:2017-05 EN ISO 17232:2017 (E) 6 4.4.4 Place the sensor of the temperature measuring device (4.2.5) at a distance of 1,5 mm 0,5 mm above the dome of the distended test piece. Using the hot air blower (4.2.4), raise
