1、January 2013 Translation by DIN-Sprachendienst.English price group 7No 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
2、 59.140.30!$v“1936183www.din.deDDIN EN ISO 20433Leather Tests for colour fastness Colour fastness to crocking (ISO 20433:2012);English version EN ISO 20433:2012,English translation of DIN EN ISO 20433:2013-01Leder Farbechtheitsprfungen Farbechtheit gegen Reiben (ISO 20433:2012);Englische Fassung EN
3、ISO 20433:2012,Englische bersetzung von DIN EN ISO 20433:2013-01Cuir Essais de solidit des coloris Solidit des coloris au dgorgement par frottement (ISO 20433:2012);Version anglaise EN ISO 20433:2012,Traduction anglaise de DIN EN ISO 20433:2013-01www.beuth.deDocument comprises 10 pagesIn case of dou
4、bt, the German-language original shall be considered authoritative.12.12 DIN EN ISO 20433:2013-01 2 A comma is used as the decimal marker. This document (EN ISO 20433:2012) has been prepared by Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy) in collaboration with the International
5、 Union of Leather Technologists and Chemists Societies (IULTCS). 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 A
6、usgangsprodukte. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 105-A01 DIN EN ISO 105-A01 ISO 105-A03 DIN EN 20105-A03 ISO 105-A04 DIN EN ISO 105-A04 ISO 105-X12 DIN EN ISO 105-X12 ISO 2418 DIN EN ISO 2418 ISO 2419 DIN EN ISO 2419 ISO
7、 11640 DIN EN ISO 11640 National Annex NA (informative) Bibliography DIN EN 20105-A03, Textiles Tests for colour fastness Part A03: Grey scale for assessing staining DIN EN ISO 105-A01, Textiles Tests for colour fastness Part A01: General principles of testing DIN EN ISO 105-A04, Textiles Tests for
8、colour fastness Part A04: Method for the instrumental assessment of the degree of staining of adjacent fabrics DIN EN ISO 105-X12, Textiles Tests for colour fastness Part X12: Colour fastness to rubbing DIN EN ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location D
9、IN EN ISO 2419, Leather Physical and mechanical tests Sample preparation and conditioning DIN EN ISO 11640, Leather Test for colour fastness Colour fastness to cycles of to-and-fro rubbing National foreword EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 20433 October 2012 ICS 59.140.30 Eng
10、lish Version Leather - Tests for colour fastness - Colour fastness to crocking (ISO 20433:2012) Cuir - Essais de solidit des coloris - Solidit des coloris au dgorgement par frottement (ISO 20433:2012) Leder - Farbechtheitsprfungen - Farbechtheit gegen Reiben (ISO 20433:2012) This European Standard w
11、as approved by CEN on 30 September 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 alteration. Up-to-date lists and bibliographical references concerning suc
12、h 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 language made by translation under the responsibility of a CEN member into its own
13、 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, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, G
14、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMU
15、NG 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 20433:2012: EContents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Principle . 4 4 Apparatus and materials. 5
16、5 Test specimens 5 6 Procedure . 5 7 Evaluation 5 8 Precision 6 9 Test report 6 Annex A (informative) Apparatus and materials 7 Bibliography 8 EN ISO 20433:2012 (E) DIN EN ISO 20433:2013-01 2Foreword This document (EN ISO 20433:2012) has been prepared by Technical Committee CEN/TC 289 “Leather” the
17、secretariat of which is held by UNI, in collaboration with 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 or by endorsement, at the latest by April 2013,
18、 and conflicting national standards shall be withdrawn at the latest by April 2013. 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 all such patent rights. Ac
19、cording to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germa
20、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. EN ISO 20433:2012 (E) DIN EN ISO 20433:2013-01 3 1 Scope This International Standard spec
21、ifies a method for determining the amount of colour transferred from the surface of coloured leather to other surfaces by rubbing with a white cotton cloth. Two tests are carried out, one with a dry rubbing cloth and one with a wet rubbing cloth. The method is applicable to all types of coloured lea
22、ther. Since after treatments of the leather as well as surface finishes can affect the degree of colour transfer, the test can be made before and/or after such treatments. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refe
23、rences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 105-A01, Textiles Tests for colour fastness Part A01: General principles of testing ISO 105-A03, Textiles Tests for colour fastness Part A03: Grey sca
24、le for assessing staining ISO 105-A04, Textiles Tests for colour fastness Part A04: Method for the instrumental assessment of the degree of staining of adjacent fabrics ISO 105-F09, Textiles Tests for colour fastness Part F09: Specification for cotton rubbing cloth ISO 2418, Leather Chemical, physic
25、al and mechanical and fastness tests Sampling location ISO 2419, Leather Physical and mechanical tests Sample preparation and conditioning 3 Principle Specimens of leather are rubbed with a dry or wet rubbing cloth attached to a cylindrical finger that is moved to and fro under controlled conditions
26、. Colour transferred to the white rubbing cloth is assessed with the grey scale for staining. The general colour fastness testing principles shall be in accordance with those described in ISO 105-A01, taking into account that the substrate is leather. EN ISO 20433:2012 (E) DIN EN ISO 20433:2013-01 4
27、4 Apparatus and materials 4.1 Suitable test device, for determining the colour fastness to crocking. The device shall have a rubbing finger consisting of a cylinder of 16 mm 0,1 mm diameter which is driven to carry out a linear reciprocating motion along a 100 mm 5 mm track on the specimen, exerting
28、 a downward force of 9 0,2 N. NOTE An example of a suitable apparatus available commercially is given in Annex A. 4.2 White cotton rubbing cloth, desized, bleached, without finish, complying with ISO 105-F09. The cloth is cut into squares measuring approximately 50 mm 50 mm, for the rubbing finger i
29、n 4.1. NOTE An example of a suitable commercial source is given in Annex A. 4.3 Grey scale for assessing staining, complying with ISO 105-A03. 4.4 Spectrophotometer or colorimeter for assessing staining, complying with ISO 105-A04. 5 Test specimens If the piece of leather available for testing is a
30、whole hide or skin, then first take a sample in accordance with ISO 2418. Two representative leather specimens, each measuring not less than 140 mm 50 mm, are required. One specimen is required for dry rubbing and the other for wet rubbing. Prior to testing, condition the specimens and dry rubbing c
31、loth for at least 24 h under standard conditions in accordance with ISO 2419. 6 Procedure 6.1 Fasten each test specimen securely to the baseboard of the test device so that the surface to be tested is uppermost and the long direction of the specimen follows the track of the device. Test the specimen
32、 by the procedures in 6.2 and 6.3. 6.2 Dry rubbing: Fix the dry rubbing cloth (4.2) in place over the end of the cylindrical finger of the test device (4.1). At a rate of one turn per second, complete 10 turns of the crank to slide the rubbing finger to and fro (10 times to and 10 times fro) in a st
33、raight line along a track 100 mm long on a dry specimen, exerting a downward force of 9 N. After rubbing, remove the cloth. 6.3 Wet rubbing: Establish a technique for preparing a wet rubbing cloth by weighing a conditioned piece of cloth, thoroughly wetting it out in distilled water, squeezing or wr
34、inging it, then reweighing it until the water pick-up is 100 % 5 %. Follow the directions for rubbing given in 6.2 with a fresh leather specimen. After rubbing, remove the cloth and dry it at room temperature. 7 Evaluation Remove dust and fibrous matter retained on the surface of both cotton rubbing
35、 cloths by light brushing or by careful use of the sticky side of clear adhesive tape. Consider only the coloration due to staining by the dye. Back each of the rubbing cloths used in the test with three layers of unused white rubbing cloth and, under suitable illumination, according to ISO 105-A01,
36、 visually assess the staining of the rubbing cloths using the grey scale for staining in accordance with ISO 105-A03 (4.3). EN ISO 20433:2012 (E) DIN EN ISO 20433:2013-01 5 Alternatively, provided the staining on the rubbing cloth is even, the grey scale colour difference can be assessed instrumenta
37、lly (4.4) in accordance with ISO 105-A04. 8 Precision For the visual grey scale evaluations, an inter-person precision of 0,5 grey scale units is normal. 9 Test report The test report shall include the following information: a) a reference to this International Standard; b) a description of the type
38、 of leather tested; c) the numerical grey scale ratings obtained for the staining of the dry rubbing cloth and the wet rubbing cloth; d) details of any deviations from the procedure specified; e) the date of the test. EN ISO 20433:2012 (E) DIN EN ISO 20433:2013-01 6Annex A (informative) Apparatus an
39、d materials Examples of suitable products available commercially are given below. This information is given for the convenience of users of this International Standard and does not constitute an endorsement by ISO of these products. A.1 Crockmeter A suitable test apparatus (4.1), the AATCC Crockmete
40、r, is described in the Technical Manual of the American Association of Textile Chemists and Colorists, Test Method 8-2007. A Crockmeter can be obtained, for example, from James H. Heal & Co. Ltd, Richmond Works, Halifax, West Yorkshire HX3 6EP, England. Website: www.james-heal.co.uk PFI Germany, Tes
41、t and Research Institute, Marie-Curie-Strasse 19, D-66953 Pirmasens, Germany. Website: www.pfi-germany.de Other crocking devices can be used, provided that the same results are obtained as with the apparatus described in 4.1. A.2 Rubbing cloth A suitable white cotton rubbing cloth (4.2) can be obtai
42、ned, for example, from: EMPA Testmaterialien AG, Mvenstrasse 12, CH-9015 St. Gallen-Winkeln, Switzerland. Website: www.empa-testmaterials.ch. SDC Enterprises Limited, Pitcliffe Way, Upper Castle Street, Bradford, BD5 7SG, UK. Website: www.sdcenterprises.co.uk A.3 Abnormal crock images If the crockin
43、g apparatus is not correctly maintained, circular images of the rubbing finger outer edges can be obtained. Details on possible causes and corrective actions are contained in AATCC Test Method 8-2007. EN ISO 20433:2012 (E) DIN EN ISO 20433:2013-01 7 Bibliography Other, related, test methods: 1 ISO 1
44、05-X12, Textiles Tests for colour fastness Part X12: Colour fastness to rubbing 2 AATCC Test Method 8-2007, Colorfastness to Crocking: AATCC Crockmeter Method 3 ASTM D 5053, Standard Test Method for Colorfastness of Crocking of Leather 4 ISO 11640, Leather Tests for colour fastness Colour fastness to cycles of to-and-fro rubbing EN ISO 20433:2012 (E) DIN EN ISO 20433:2013-01 8
