1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationLeather Tests for colour fastness Colour fastness to waterBS EN ISO 11642:2012National forewordThis British Standard is the UK implementation of EN ISO 11642:2012. Itsupersedes B
2、S EN ISO 11642:1998 which is withdrawn.The UK participation in its preparation was entrusted to Technical CommitteeTCI/69, Footwear, leather and coated fabrics.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to includ
3、e all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 72960 7ICS 59.140.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British
4、 Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 December 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN ISO 11642:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11642 November 2012 ICS 59.140.30 S
5、upersedes EN ISO 11642:1998English Version Leather - Tests for colour fastness - Colour 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 Stan
6、dard was approved by CEN on 14 November 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 concernin
7、g 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 language made by translation under the responsibility of a CEN member into it
8、s 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, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germa
9、ny, Greece, 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
10、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 11642:2012: EBS EN ISO 11642:2012EN ISO 11642:2012 (E) 2 Contents Page Foreword 3BS EN ISO 11642:2012EN ISO 11642
11、:2012 (E) 3 Foreword 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 International Union of Leather Technologists and Chemists Societies. This European Standard shall be given the stat
12、us 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 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of
13、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 Regulations, the national standards organisations of the following countries are bound to implement this Eu
14、ropean Standard: 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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, S
15、lovenia, 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. BS EN ISO 11642:2012ISO 11642:2012(E) IULTCS/IUF 421:2012(E) ISO 2012 All rights reserved iiiContents Page 1 Sco
16、pe 1 2 Normative references 1 3 Principle . 2 4 Apparatus and materials. 2 5 Test specimens 3 6 Procedure . 3 7 Evaluation 4 8 Precision 4 9 Test report 4 Annex A (informative) Commercial sources for apparatus and materials 5 BS EN ISO 11642:2012INTERNATIONAL STANDARD ISO 11642:2012(E)IULTCS/IUF 421
17、:2012(E) ISO 2012 All rights reserved 1Leather Tests for colour fastness Colour fastness to water 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 d
18、ocuments are indispensable for the application 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 105-A01, Textiles Tests for colour fastness Part A01: General principle
19、s of testing ISO 105-A02, Textiles Tests for colour fastness 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 assessmen
20、t of the degree of staining of adjacent fabrics ISO 105-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, T
21、extiles Tests for colour fastness Part F02: Specification 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 fabri
22、c ISO 105-F05, Textiles Tests for colour fastness Part 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 adjacen
23、t fabric ISO 105-F10, Textiles Tests for colour fastness 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 BS EN ISO 11642:
24、2012ISO 11642:2012(E) IULTCS/IUF 421:2012(E) 2 ISO 2012 All rights reserved3 Principle A leather 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 spec
25、ified time in a suitable apparatus. The leather specimen and adjacent fabric are then dried, and 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 fastn
26、ess testing principles shall be in accordance with those described in ISO 105-A01, taking into account 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 approxima
27、tely 5 kg in mass and approximately 115 mm 60 mm in cross-section fits accurately, so that a uniform 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-piec
28、e and about 1,5 mm thick. The test apparatus shall be constructed so that if the weight-piece is 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 commercial
29、ly is given in Annex A. 4.2 Oven, maintained at 37 C 2 C. 4.3 Adjacent fabrics (see ISO 105-A01). 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
30、 F07. NOTE Examples of suitable commercial sources are given in Annex A. 4.4 Demineralized water, 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 colo
31、ur, in accordance with ISO 105-A02. 4.8 Spectrophotometer or colorimeter for assessing change in 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 appro
32、ximately 5 kPa (50 mbar) within 4 min. BS EN ISO 11642:2012ISO 11642:2012(E) IULTCS/IUF 421:2012(E) ISO 2012 All rights reserved 35 Test specimens 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
33、 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 50 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 sid
34、e 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, carrying 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
35、thoroughly to remove all dust. From the roughened area of the leather, cut out a test specimen measuring approximately 100 mm 40 mm. To test 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 conta
36、ct 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 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.
37、4 For each leather specimen cut out a piece (or pieces) of adjacent fabric (4.3), enough to cover the leather sample measuring approximately 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 fa
38、bric(s) in demineralized water (4.4) in separate containing vessels, using for example bent glass rods to keep them immersed. (If testing more than one specimen simultaneously, several pieces of adjacent fabric may be immersed in the same containing vessel, but each leather specimen shall be immerse
39、d 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 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 coati
40、ng, 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 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 spec
41、imen with a second piece (or pieces) of adjacent fabric. Cover the composite specimen with a second glass or acrylic-resin plate. 6.2 Preheat 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
42、 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 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 p
43、ressure is exerted evenly on it.) Place the loaded apparatus in the oven and leave at 37 C 2 C for 180 min 10 min. BS EN ISO 11642:2012ISO 11642:2012(E) IULTCS/IUF 421:2012(E) 4 ISO 2012 All rights reserved6.3 At the end of the 180 min period, take off the load, remove the composite specimen from th
44、e 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 adjacent fabric(s) in contact only at the point they are fixed together. 7 Evaluation 7.1 When the composite specimen is dry, using D65 illumination a
45、ccording to ISO 105-A01:2010 (Clause 15), visually assess the staining of each kind of fibre in the adjacent fabric(s), using the appropriate grey scale (4.6) in accordance with ISO 105-A03. Also assess the change in colour (4.7) of the leather specimen in accordance with ISO 105-A02. 7.2 Alternativ
46、ely, provided the staining and colour change is even, the grey scale staining and colour difference can be assessed instrumentally (4.8) in accordance with ISO 105-A05 and ISO 105-A04. 8 Precision For the visual grey scale evaluations, an inter-person precision of 0,5 grey scale units is normal. 9 T
47、est report The test report shall include the following information: a) a reference to this International Standard, ISO 11642; b) a description of the type of leather tested and which surface of the leather was tested; c) whether there was a finish and, if so, whether the finish was broken; d) the nu
48、merical grey scale ratings obtained for the staining of the adjacent fabric(s), giving a separate grey scale rating for each of the different types of fibre; e) the numerical grey scale rating obtained for the change in colour of the leather specimen; f) details of any deviations from the procedure
49、specified. BS EN ISO 11642:2012ISO 11642:2012(E) IULTCS/IUF 421:2012(E) ISO 2012 All rights reserved 5Annex A (informative) Commercial sources for apparatus and 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 A suitable apparatus is: the Perspirome
