1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 17231:2011Leather Physical andmechanical tests Determination of waterrepellency of garment leather(ISO 17231:2006)BS EN ISO 17231:2011 BRITISH STANDARDNational foreword
2、This British Standard is the UK implementation of EN ISO17231:2011. It is identical to ISO 17231:2006. It supersedes BS EN14340:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/69, Footwear, leather and coated fabrics.A list of organizations rep
3、resented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 72292 9ICS 59.140.30Compliance with a British Standard cannot confer
4、immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 September 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17231 September 2011 ICS 59.140.30 S
5、upersedes EN 14340:2004English Version Leather - Physical and mechanical tests - Determination of water repellency of garment leather (ISO 17231:2006) Cuir - Essais physiques et mcaniques - Dtermination de la rsistance au mouillage superficiel des cuirs pour vtements (ISO 17231:2006) Leder - Physika
6、lische und mechanische Prfungen - Bestimmung der wasserabweisenden Eigenschaften von Bekleidungsleder (ISO 17231:2006) This European Standard was approved by CEN on 18 August 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thi
7、s 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 Centre or to any CEN member. This European Standard exists in three official v
8、ersions (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 the official versions. CEN members are the national standards bodies of Austr
9、ia, Belgium, Bulgaria, Croatia, Cyprus, Czech 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 and United Kingdom. EUROP
10、EAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17231:2011: EBS EN ISO 17
11、231:2011EN ISO 17231:2011 (E) 3 Foreword The text of ISO 17231:2006 has been prepared by International Union of Leather Technologists and Chemists Societies and has been taken over as EN ISO 17231:2011 by Technical Committee CEN/TC 289 “Leather” the secretariat of which is held by UNI. This European
12、 Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2012, and conflicting national standards shall be withdrawn at the latest by March 2012. Attention is drawn to the possibility that some of the elements of
13、 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 14340:2004. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countri
14、es are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sloveni
15、a, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 17231:2006 has been approved by CEN as a EN ISO 17231:2011 without any modification. BS EN ISO 17231:2011ISO 17231:2006(E) IULTCS/IUP 37:2006(E) ISO 2006 All rights reserved iiiForeword ISO (the International Or
16、ganization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been establ
17、ished has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardizati
18、on. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
19、 Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such pa
20、tent rights. ISO 17231 was prepared by the Physical Test Commission of the International Union of Leather Technologists and Chemists Societies (IUP Commission, IULTCS) in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 289 Leather, the secretariat of wh
21、ich is held by UNI. It was published as EN 14340. It is based on IUP 37 published in J. Soc. Leather Tech. Chem., 86 (7), p. 339, 2002, and declared an official method of the IULTCS in May 2003. IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to furt
22、her the advancement of leather science and technology. 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. BS
23、EN ISO 17231:2011BS EN ISO 17231:2011INTERNATIONAL STANDARD ISO 17231:2006(E)IULTCS/IUP 37:2006(E) ISO 2006 All rights reserved 1Leather Physical and mechanical tests Determination of water repellency of garment leather 1 Scope This International Standard specifies a method for determining the repel
24、lency of leather to surface wetting. It is applicable to all leathers intended for use in clothing. The method does not determine the resistance of leather to water penetration. 2 Normative references The following referenced documents are indispensable for the application of this document. For date
25、d 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 location ISO 2419, Leather Physical and mechanical tests Sample prepa
26、ration and conditioning ISO 3696, Water for analytical laboratory use Specification and test methods 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 spray rating measure of the resistance of the surface of a leather to wetting 4 Principle A s
27、pecified volume of distilled or deionized water is sprayed onto a test piece, which has been mounted on a ring and placed at an angle of 45 so that the centre of the test piece is at a specified distance below the spray nozzle. The spray rating is determined by comparing the appearance of the test p
28、iece with descriptive and photographic standards. The mass of water absorbed by the test piece is determined by weighing before and after applying the water spray. BS EN ISO 17231:2011ISO 17231:2006(E) IULTCS/IUP 37:2006(E) 2 ISO 2006 All rights reserved5 Apparatus 5.1 Spray device, as shown in Figu
29、re 1, consisting of a funnel, diameter 150 mm 2 mm, held vertically with a metal spray nozzle (5.2) connected to the end of the stem by flexible tubing of bore about 10 mm. The overall distance from the top of the funnel to the bottom of the nozzle is 190 mm 2 mm. Dimensions in millimetres Key 1 gla
30、ss funnel 150 2 2 ring support 3 rubber tubing 4 spray nozzle 5 stand 6 specimen 7 specimen holder 8 support (e.g. wood) Figure 1 Apparatus for spray test BS EN ISO 17231:2011ISO 17231:2006(E) IULTCS/IUP 37:2006(E) ISO 2006 All rights reserved 35.2 Metal spray nozzle, as shown in Figure 2, with appr
31、oximate diameter of 33 mm, having a convex face with 19 holes of 0,9 mm 0,05 mm diameter distributed over the face of the nozzle. The duration of flow for 250 ml 5 ml of distilled or deionized water poured into the funnel shall be 27,5 s 2,5 s. Dimensions in millimetres Key 1 12 holes 0,9 0,05 on a
32、circle 21,4 0,05 2 6 holes 0,9 0,05 on a circle 10 0,05 3 1 hole 0,9 0,05 on centre Figure 2 Spray nozzle 5.3 Test piece holder, consisting of two metal rings which fit into each other. The inner ring is fixed and of outside diameter 150 mm 2 mm. The outer ring is adjustable so that the internal dia
33、meter can be reduced to 150 mm to allow the test piece to be securely clamped between the two rings. When in position for test, the rings rest on a suitable support so that the test piece is at an angle of 45,0 2,5 and with the centre of the clamped area 150 mm 2 mm below the centre of the face of t
34、he metal nozzle. 5.4 Balance, reading to 0,001 g. 5.5 Distilled or deionized water, conforming to the requirements of grade 3 of ISO 3696. 6 Sampling and sample preparation 6.1 Sample in accordance with ISO 2418. Cut three square test pieces of side 182 mm 2 mm ensuring that they are taken from area
35、s free from any holes or other damage. NOTE 1 It may be necessary to trim the wool if a woolled sheepskin is being tested to allow secure clamping of the test piece. NOTE 2 If there is a requirement for more than two hides or skins to be tested in one batch, then only one sample need be taken from e
36、ach hide or skin, provided that the overall total is not less than three test pieces. 6.2 Condition the test pieces in accordance with ISO 2419. 6.3 Weigh the test piece to the nearest 0,001 g. 6.4 Carry out all further operations at a temperature of 20 C 2 C or 23 C 2 C. There is no need for furthe
37、r humidity control. BS EN ISO 17231:2011ISO 17231:2006(E) IULTCS/IUP 37:2006(E) 4 ISO 2006 All rights reserved7 Procedure 7.1 Mount the test piece securely on the test piece holder (5.3) with the face of the leather which would be exposed in wear uppermost. Place the test piece holder in position be
38、low the spray nozzle. 7.2 Pour 250 ml 5 ml of distilled or deionized water (5.5) at the controlled temperature (6.4) into the funnel quickly but steadily so that the spraying is continuous once it has commenced. 7.3 Immediately after the spraying has ceased, remove the holder and test piece and tap
39、two diametrically opposite points of the frame against a solid object, with the plane of the leather almost horizontal and the tested surface downwards. 7.4 Assign to the test piece the spray rating on either the following descriptive scale or the photographic scale in Annex A which best describes t
40、he degree of wetting. Intermediate ratings are not to be attempted. 1 Wetting of the whole of the sprayed surface. 2 Wetting of half of the sprayed surface. This usually occurs through the merging of small, discrete wetted areas. 3 Wetting of the sprayed surface only as small discrete areas. 4 No we
41、tting of, but adherence of small drops to, the sprayed surface. 5 No wetting of and no adherence of small drops to the sprayed surface. 7.5 Examine the reverse side of the test piece and note any wetting. 7.6 Remove the test piece from the holder, blot gently to remove any water droplets which still
42、 adhere and re-weigh to the nearest 0,001 g. 8 Expression of results Calculate the mass of water absorbed, mw, in grams and the percentage of water absorbed, w, using the equations: w21mmm=211()100 %mmwm= where m1is the initial mass of the test piece, in grams; m2is the mass of the test piece after
43、the test, in grams. BS EN ISO 17231:2011ISO 17231:2006(E) IULTCS/IUP 37:2006(E) ISO 2006 All rights reserved 59 Test report The test report shall include the following for each test piece: a) a reference to this International Standard; i.e. 17231:2006; b) the spray rating (7.4); c) the mass of water
44、 absorbed, mw,in grams; d) the percentage of water absorbed, w; e) the standard atmosphere used for conditioning and testing as given in ISO 2419 (i.e. 20 C/65 % RH, or 23 C/50 % RH); f) any deviations from the method specified in this International Standard; g) full details for identification of th
45、e sample and any deviations from ISO 2418 with respect to sampling. BS EN ISO 17231:2011ISO 17231:2006(E) IULTCS/IUP 37:2006(E) 6 ISO 2006 All rights reservedAnnex A (normative) ISO photographic scale Figure A.1 ISO spray test rating chart based on the American Association of Textile Chemists and Co
46、lorists (AATCC) photographic scale NOTE The ISO descriptive scale corresponds to the AATCC photographic scale as follows: ISO 1 = AATCC 50 Wetting of the whole of the sprayed surface. ISO 2 = AATCC 70 Wetting of half of the sprayed surface. This usually occurs through the merging of small, discrete
47、wetted areas. ISO 3 = AATCC 80 Wetting of the sprayed surface only as small discrete areas. ISO 4 = AATCC 90 No wetting of, but adherence of small drops to, the sprayed surface. ISO 5 = AATCC 100 No wetting of and no adherence of small drops to the sprayed surface. BS EN ISO 17231:2011ISO 17231:2006
48、(E) IULTCS/IUP 37:2006(E) ISO 2006 All rights reserved 7Annex B (informative) Sources of apparatus Examples of suitable products available commercially are given below. The recommended apparatus is the spray rating tester, manufactured, for example by: James H. Heal and Co. Ltd1), Richmond Works, Ha
49、lifax, West Yorkshire, HX3 6EP, England; SDL International Ltd1), PO Box 162, Crown Royal, Shawcross St., Stockport, SKI 3JW, England. Copies of the AATCC Standard Spray Test Ratings Chart may be obtained from the American Association of Textile Chemist and Colorists, P O Box 12215, Research Triangle Park, NC 27709, USA. 1) James H. Heal and Co. Ltd and SDL International Ltd are an examples of suppliers of a suitable products available commercially. This informatio
