1、February 2013 Translation by DIN-Sprachendienst.English price group 8No 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).IC
2、S 59.140.30!$R-“1944710www.din.deDDIN EN ISO 11642Leather Tests for colour fastness Colour fastness to water (ISO 11642:2012);English version EN ISO 11642:2012,English translation of DIN EN ISO 11642:2013-02Leder Farbechtheitsprfungen Farbechtheit gegenber Wasser (ISO 11642:2012);Englische Fassung E
3、N ISO 11642:2012,Englische bersetzung von DIN EN ISO 11642:2013-02Cuir Essais de solidit des coloris Solidit des coloris leau (ISO 11642:2012);Version anglaise EN ISO 11642:2012,Traduction anglaise de DIN EN ISO 11642:2013-02SupersedesDIN EN ISO 11642:1998-12www.beuth.deDocument comprises 12 pagesIn
4、 case of doubt, the German-language original shall be considered authoritative.02.13DIN EN ISO 11642:2013-02 2 A comma is used as the decimal marker. National foreword This document (EN ISO 11642:2012) has been prepared by Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy) in collabo
5、ration with the International Union of Leather Technologists and Chemists Societies (IULTCS). This document is based on IUF 421. The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-05-51 AA A
6、nforderungen und physikalische Prfverfahren fr Leder und seine Ausgangsprodukte. 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-A02 DIN EN 20105-A02 ISO 105-A03 DIN EN 20105-A03 ISO 105-A04 DIN EN ISO
7、 105-A04 ISO 105-A05 DIN EN ISO 105-A05 ISO 2418 DIN EN ISO 2418 ISO 3696:1987 DIN ISO 3696:1991-06 Amendments This standard differs from DIN EN ISO 11642:1998-12 as follows: a) the standard has been editorially revised; b) the procedure has been technically updated; c) Subclause 7.2 has been added
8、allowing the instrumental assessment of the grey scale staining. Previous editions DIN EN ISO 11642: 1998-12 DIN EN ISO 11642:2013-02 3 National Annex NA (informative) Bibliography DIN EN 20105-A02, Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colour DIN EN 20105-A
9、03, 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 colour fastness Part A04: Method for the instrumental assessment of the degree of s
10、taining of adjacent fabrics DIN EN ISO 105-A05, Textiles Tests for colour fastness Part A05: Instrumental assessment of change in colour for determination of grey scale rating DIN EN ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location DIN ISO 3696:1991-06, Water
11、for analytical laboratory use Specification and test methods DIN EN ISO 11642:2013-02 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11642 November 2012 ICS 59.140.30 Supersedes EN ISO 11642:1998English Version Leather - Tests for colour fastness - Colour
12、 fastness to water (ISO 11642:2012) Cuir - Essais de solidit des coloris - Solidit des coloris leau (ISO 11642:2012) Leder - Farbechtheitsprfungen - Farbechtheit gegenber Wasser (ISO 11642:2012) This European Standard was approved by CEN on 14 November 2012. CEN members are bound to comply with the
13、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 such national standards may be obtained on application to the CEN-CENELEC Management
14、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 language and notified to the CEN-CENELEC Management Centre has the same status as
15、 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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Net
16、herlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United 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 exp
17、loitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11642:2012: EContents Page Foreword . 3 1 Scope 4 2 Normative references 4 3 Principle . 6 4 Apparatus and materials. 6 5 Test specimens 6 6 Procedure . 6 7 Evaluation 7 8 Precision 7 9 Test report 7
18、Annex A (informative) Commercial sources for apparatus and materials 8 EN ISO 11642:2012 (E) DIN EN ISO 11642:2013-02 2Foreword This document (EN ISO 11642:2012) has been prepared by Technical Committee CEN/TC 289 “Leather“, the secretariat of which is held by UNI, in collaboration with the Internat
19、ional 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 May 2013, and conflicting national standards shall be withdrawn at the latest by May 20
20、13. 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. This document supersedes EN ISO 11642:1998. According to the CEN/CENELEC Internal
21、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, Germany, Greece, Hungary, Iceland, Irelan
22、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 11642:2012 has been approved by CEN as a EN ISO 11642:2012 without any modification. EN IS
23、O 11642:2012 (E) DIN EN ISO 11642:2013-02 3 1 Scope This International Standard specifies a method for determining the colour fastness to water of leather of all kinds at all stages of processing. 2 Normative references The following referenced documents are indispensable for the application of this
24、 document. For dated references, 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-A02, Textiles Tests for colour fa
25、stness Part A02: Grey scale for assessing change in colour ISO 105-A03, Textiles Tests for colour fastness Part A03: Grey scale 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 10
26、5-A05, Textiles Tests for colour fastness Part A05: Instrumental assessment of change in colour for determination of grey scale rating ISO 105-F01, Textiles Tests for colour fastness Part F01: Specification for wool adjacent fabric ISO 105-F02, Textiles Tests for colour fastness Part F02: Specificat
27、ion for cotton and viscose adjacent fabrics ISO 105-F03, Textiles Tests for colour fastness Part F03: Specification for polyamide adjacent fabric ISO 105-F04, Textiles Tests for colour fastness Part F04: Specification for polyester adjacent fabric ISO 105-F05, Textiles Tests for colour fastness Part
28、 F05: Specification for acrylic adjacent fabric ISO 105-F06, Textiles Tests for colour fastness Part F06: Specification for silk adjacent fabric ISO 105-F07, Textiles Tests for colour fastness Part F07: Specification for secondary acetate adjacent fabric ISO 105-F10, Textiles Tests for colour fastne
29、ss Part F10: Specification for adjacent fabric: Multifibre ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location ISO 3696:1987, Water for analytical laboratory use Specification and test methods EN ISO 11642:2012 (E) DIN EN ISO 11642:2013-02 43 Principle A leather
30、specimen is soaked in demineralized water and a piece of adjacent fabric, also soaked in demineralized water, laid against each side to be tested. The composite specimen is left under pressure for a specified time in a suitable apparatus. The leather specimen and adjacent fabric are then dried, and
31、the change in colour of the specimen and the staining of the adjacent fabric assessed with the grey scales. Leathers with a finish may be tested intact or with the finish broken. The general colour fastness testing principles shall be in accordance with those described in ISO 105-A01, taking into ac
32、count that the substrate is leather. 4 Apparatus and materials Ordinary laboratory apparatus and 4.1 Test apparatus, consisting of a stainless-steel frame, into which a rectangular weight-piece approximately 5 kg in mass and approximately 115 mm 60 mm in cross-section fits accurately, so that a unif
33、orm pressure of 12,5 1,0 kPa can be applied on the composite specimen, placed between rectangular plates of an inert material, e.g. glass or acrylic-resin, of the same length and width as the weight-piece and about 1,5 mm thick. The test apparatus shall be constructed so that if the weight-piece is
34、removed during the tests, the pressure of 12,5 kPa remains unchanged. Other devices may be used provided that equivalent results are obtained. NOTE An example of a suitable apparatus available commercially is given in Annex A. 4.2 Oven, maintained at 37 C 2 C. 4.3 Adjacent fabrics (see ISO 105-A01).
35、 Either a) a multifibre adjacent fabric, complying with ISO 105-F10, measuring approximately 100 mm 40 mm, or b) single-fibre adjacent fabrics, complying with the relevant specification in ISO 105-F01 to F07. NOTE Examples of suitable commercial sources are given in Annex A. 4.4 Demineralized water,
36、 grade 3 in accordance with ISO 3696:1987. 4.5 Fine-grained adhesive paper, grade P 180. 4.6 Grey scale for assessing staining, in accordance with ISO 105-A03. 4.7 Grey scale for assessing change in colour, in accordance with ISO 105-A02. 4.8 Spectrophotometer or colorimeter for assessing change in
37、colour and staining, complying with ISO 105-A04 and ISO 105-A05. 4.9 A vessel suitable for evacuation, e.g. vacuum-desiccator. 4.10 Vacuum pump, capable of evacuating the desiccator vessel (4.9) to approximately 5 kPa (50 mbar) within 4 min. EN ISO 11642:2012 (E) DIN EN ISO 11642:2013-02 5 5 Test sp
38、ecimens 5.1 If the piece of leather available for testing is a whole hide or skin, then first take a sample in accordance with ISO 2418. 5.2 If the leather has a finish and is to be tested with the finish broken, prepare the test specimen as follows: Cut out a piece of leather approximately 120 mm 5
39、0 mm and lay it out, finish-side down, on a sheet of abrasive paper (4.5), measuring approximately 150 mm 200 mm, held flat on a work surface. Load the upper side of the piece of leather uniformly with a 1 kg weight. Move the piece of leather approximately 100 mm to and fro on the abrasive paper, ca
40、rrying out 10 to-and-fro cycles. NOTE With practice, the same roughening effect can be achieved holding the abrasive paper in the hand. Brush the roughened area thoroughly to remove all dust. From the roughened area of the leather, cut out a test specimen measuring approximately 100 mm 40 mm. To tes
41、t leather for upholstery application with a surface coating, larger leather pieces, e.g. approximately 110 mm 50 mm can be used to avoid staining caused by contact of water with the leather fibres at the edge. The fact that the finish has been broken shall be mentioned in the test report. 5.3 If the
42、 leather has no finish, or if it has a finish but is to be tested with the finish intact, simply cut out a test specimen measuring approximately 100 mm 40 mm. 5.4 For each leather specimen cut out a piece (or pieces) of adjacent fabric (4.3), enough to cover the leather sample measuring approximatel
43、y 100 mm 40 mm. If both sides are to be tested then another piece(s) of adjacent fabric is required. 6 Procedure 6.1 Immerse the leather specimen and adjacent fabric(s) in demineralized water (4.4) in separate containing vessels, using for example bent glass rods to keep them immersed. (If testing m
44、ore than one specimen simultaneously, several pieces of adjacent fabric may be immersed in the same containing vessel, but each leather specimen shall be immersed in a separate vessel. Place the containing vessels in the vacuum vessel (4.9), produce a vacuum of approximately 5 kPa within 4 min, and
45、hold this vacuum for 2 min. Restore normal pressure. Repeat the procedure a further two times. In the case of testing leather for upholstery with a surface coating, wet the surface with water but do not immerse the leather specimen in water. Lay a piece (or pieces) of adjacent fabric out on a glass
46、or acrylic-resin plate (4.1) and cover it with the leather specimen, with the side under test facing down. If both sides are to be tested, cover the leather specimen with a second piece (or pieces) of adjacent fabric. Cover the composite specimen with a second glass or acrylic-resin plate. 6.2 Prehe
47、at the loading weight-piece in the oven (4.2) at 37 C 2 C for at least 1 h. Place the composite specimen, between the two plates, in the test apparatus (4.1) and load it with the weight-piece. In order to allow excess demineralized water to run off, tilt the apparatus about 30 to each side for a few
48、 seconds. (When testing several composite specimens simultaneously, take care to ensure that each is placed centrally between two plates in such a way that the pressure is exerted evenly on it.) Place the loaded apparatus in the oven and leave at 37 C 2 C for 180 min 10 min. EN ISO 11642:2012 (E) DIN EN ISO 11642:2013-02 66.3 At the end of the 180 min period, take off the load, remove the composite specimen from the apparatus, fix it together at one corner (by stitching or stapling), and dry it by hanging it in air at room temperature, with the specimen and its adjacen
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