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1、BRITISH STANDARD BS EN ISO 14268:2002 Incorporating Corrigendum No. 1 Leather Physical and mechanical tests Determination of water vapour permeability The European Standard EN ISO 14268:2002 has the status of a British Standard ICS 59.140.30 ? BS EN ISO 14268:2002 This British Standard, having been
2、prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 10 January 2003 BSI 22 October 2003 ISBN 0 580 41059 5 National foreword This British Standard is the official English
3、 language version of EN ISO 14268:2002. It is identical with ISO 14268:2002. It supersedes clause 24 of BS 3144:1968, which is deleted by amendment. The UK participation in its preparation was entrusted to Technical Committee TCI/69 Footwear and leather, which has the responsibility to: A list of or
4、ganizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Corr
5、espondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not
6、 of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developmen
7、ts and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 6, the Annex ZA page and a back cover. The BSI copyright date displayed in this document in
8、dicates when the document was last issued. Amendments issued since publication Amd. No. DateComments 14794 Corrigendum No. 1 22 October 2003Incorporating corrected EN ISO foreword page and adding Annex ZA page EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14268 December 2002 ICS 59.140.30
9、 English version Leather - Physical and mechanical tests - Determination of water vapour permeability (ISO 14268:2002) Cuir - Essais physiques et mcaniques - Dtermination de la permabilit la vapeur deau (ISO 14268:2002) Leder - Physikalische und mechanische Prfungen - Bestimmung der Wasserdampfdurch
10、lssigkeit (ISO 14268:2002) This European Standard was approved by CEN on 8 June 2002. 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
11、and bibliographical references concerning such national standards may be obtained on application to the 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 responsibi
12、lity of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Net
13、herlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2002 CENAll rights of exploitation in any form and by any means reser
14、ved worldwide for CEN national Members. Ref. No. EN ISO 14268:2002 E I NESO 41:8622002 (E) 2 CORRECTED 2003-09-24 Foreword This document (EN ISO 14268:2002) has been prepared by Technical Committee CEN/TC 289 “Leather“, the secretariat of which is held by UNI, in collaboration with the International
15、 Union of Leather Technologists and Chemists Societies (IULTCS). It is based on Method IUP 15 of the 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 endorsem
16、ent, at the latest by June 2003, and conflicting national standards shall be withdrawn at the latest by June 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech
17、 Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 14268:2002 has been approved by CEN as EN ISO 14268:2002 without any modifications. N
18、OTE Normative references to International Standards are listed in Annex ZA (normative). EN ISO 14268:2002 Reference number ISO 14268:2002(E) IULTCS/IUP 15 INTERNATIONAL STANDARD ISO 14268 IULTCS/IUP 15 First edition 2002-12-15 Leather Physical and mechanical tests Determination of water vapour perme
19、ability Cuir Essais physiques et mcaniques Dtermination de la permabilit la vapeur deau EN ISO 14268:2002 IS:86241 O2002(E) DPlcsid Fremia ihTs PDf File mc yanotiae nmdebt dedyfepca.se Icca ncnadrow eitA hebods licisnelop gnic,y tihs file mirp eb yatniv ro dewede btu slahl ton ide ebtlnu desse tt eh
20、yfepaces wihce era hml era deddebicsnede to i dnasntlalt no deeh comuptfrep remroign tide ehti.gn Iwod nnlidaot gnihs fil,e trapies ccatpe tiereht nsnopser ehiiblity fo ton ifnriignA gnebods licsneilop gnic.y I ehTStneC Olar Scerteiraat ccatpes no ailbytili ni htsi .aera Ai ebods a tedarmfo kra Aebo
21、d SystemI snctaropro.de teDials fo ts ehfotwcudorp erats sut dec ortaee tihs PDf Filc ef eb nai dnuot nlareneG eh Ifnler otait evt of ehil;e teh PDc-Frtaeimarap noteres wretpo eimizf deirp rotnign. Evc yresah era t neebkat nesne ot eruaht tf ehili es siutlbaf esu roI yb eSO memidob rebse. In teh lnu
22、ikletneve y ttah a lborpem leratign ti ot is fnuo,d lpsaee ifnrom ttneC ehlar Secrteirata at tsserdda eh igleb nevwo. ISO 2002 Athgir lls serevr.de selnUs towrehise specfi,dei trap on fo this ilbupctanoi may cudorper ebtu ro deziliyna ni de fomr yb ro nam y,snae lecetinorc m roecinahcal, inclidutohp
23、 gnocpoiym dna gnicrfoilm, wittuoh repmissii now nritif gnrom ietreh ISa Ot tserdda ehs lebwo I roSOs membre ydob it neh ctnuoo yrf ttseuqer eh.re ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mial coirypthgis.o gro We bwww.is.o gro ii I SO 2
24、002 Allr ithgsr esedevr EN ISO 14268:2002 ii IS:86241 O2002(E) I SO 2002 All irthgs ersedevr iii Contents Page Foreword iv 1Scope 1 2Normative references 1 3Principle1 4Apparatus .1 5Sampling and sample preparation.2 6Procedure .3 7Expression of results 4 8Test report 4 Annex A (informative) Sources
25、 of apparatus 5 Annex B (informative) Water vapour number6 EN ISO 14268:2002 iii IS:86241 O2002(E) vi I SO 2002 All irthgs ersedevr Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Inte
26、rnational Standards 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 wi
27、th ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technic
28、al committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn t
29、o 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 patent rights. ISO 14268 was prepared by the Physical Test Commission of the International Union of Leather Technologists and Chemists S
30、ocieties (IUP Commission, IULTCS) in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 289, Leather, the secretariat of which is held by UNI, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). It is based on
31、IUP 15 originally published in J. Soc. Leather Trades Chemists 44, p. 502, (1960) and declared an official method of the IULTCS in 1961. An updated version was published in J. Soc. Leather Tech. Chem. 82, p. 234, (1998) and a further revision published in J. Soc. Leather Tech. Chem. 84, p. 353, (200
32、0) and reconfirmed as an official method in March 2001. This latest revision differs in that it allows preparation of the sample by flexing as an alternative to preparation by abrasion, and now includes the number of test pieces to be taken. EN ISO 14268:2002 iv INTENRATIONAL TSANDADR IS:86241 O2002
33、(E) I SO 2002 All irthgs ersedevr 1 Leather Physical and mechanical tests Determination of water vapour permeability 1 Scope This International Standard describes a method for determining the water vapour permeability of leather and provides alternative methods of sample preparation. It is applicabl
34、e to all leathers below 3,0 mm thickness. ISO 2418Leather - Chemical, physical and mechanical and fastness tests - Sampling location ISO 2419Leather - Physical and mechanical tests - Sample preparation and conditioning ISO 2589Leather - Physical and mechanical tests - Determination of thickness ISO
35、5402Leather - Physical and mechanical tests - Determination of flex resistance by flexometer method 3 Principle The test piece is clamped over the opening of a container which contains a solid desiccant and is placed in a strong current of air in a standard atmosphere. The air inside the container i
36、s constantly agitated by the desiccant which is kept in motion by the rotation of the container. The container is weighed at the start and the end of the test and the mass of moisture which has been absorbed by the desiccant is determined from the difference. 4 Apparatus 4.1Containers, in the form o
37、f jars or bottles, with a neck of internal diameter 30 mm ? 3 mm fitted with a screw top with a circular opening whose diameter is equal to the internal diameter of the neck. Suitable containers typically have a height range of 70 mm to 90 mm. 4.2Test machine, including the following: 4.2.1Verticall
38、y mounted turntable, rotating at 75 r/min ? 5 r/min, capable of holding containers (4.1) with their axis parallel to and 67 mm ? 2 mm from the axis of rotation of the turntable. 4.2.2Fan, mounted in front of the mouths of the containers consisting of three flat blades in planes that are inclined 120
39、 to one another. The planes of the blades pass through the prolongation of the axis of the vertically mounted turntable. The blades are of approximate dimensions 90 mm ? 75 mm and the 90 mm side nearest the mouths of the jars passes them at a distance of 10 mm ? 5 mm. The fan rotates at 1400 r/min ?
40、 100 r/min with the direction of rotation being opposite to that of the vertically mounted turntable. The general arrangement of the turntable and fan are as shown in Figure 1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated
41、 references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 14268:2002 1 IS:86241 O2002(E) 2 I SO 2002 All irthgs ersedevr 4.3Self-indicating silica gel desiccant, particle size 2 mm to 5 mm sieved to r
42、emove small particles and dust, and freshly regenerated by heating in a ventilated oven for at least 16 h at 125 C ? 5 C then cooled to standard temperature in a hermetically sealed vessel. The granular size of the crystals shall be such that they shall not pass through a 2 mm sieve. The silica gel
43、shall not be used if it is warmer than the test piece. NOTE 1Silica gel beads are preferred to granules as they generate less dust. NOTE 2Large volumes of silica gel will only cool slowly in a closed vessel. A long cooling time may be needed to ensure that all the silica gel has cooled to standard t
44、emperature. 4.4Balance, weighing to 0,001 g. 4.5Stop clock, reading to 1 min. 4.6Vernier callipers, reading to 0,1 mm and capable of measuring the internal diameter of the necks of the containers. 4.7Press knife, as specified in ISO 2419, capable of cutting circular test pieces of a suitable size to
45、 allow a good seal at the open end of the container (4.1). 4.8Beeswax. 4.9Abrasive paper, grade P180, as defined in the P-series grain size standard published by the Federation of European Producers of Abrasive Products. Figure 1 General arrangement of test machine (all dimensions in millimetres) 4.
46、10Flex machine, as specified in ISO 5402, if test pieces are to be subjected to flexing prior to test. 5 Sampling and sample preparation Determine the thickness, as specified in ISO 2589, to ensure test pieces are below 3,0 mm thickness. 5.1Sample in accordance with ISO 2418. From the sample, cut th
47、ree test pieces by applying the press knife (4.7) to the grain surface. NOTE 1If there is a requirement for more than two hides or skins to be tested in one batch, then only one test piece need be taken from each hide or skin, provided that the overall total is not less than three test pieces. EN IS
48、O 14268:2002 2 IS:86241 O2002(E) I SO 2002 All irthgs ersedevr 3 5.2Prepare the three test pieces by one of the following methods: a) Cut a square piece of minimum size 50 mm. Place the piece grain upwards on a flat surface, press a piece of P180 grade abrasive paper (4.9) against the leather and dr
49、aw it across the leather 10 times in various directions under a load of about 2 N applied by hand pressure. Cut a circular test piece from the buffed area using the press knife specified in 4.7. b) Flex a sample for 20 000 cycles using the method and apparatus specified in ISO 5402. Cut a circular test piece from the flexed area using the press knife specified in 4.7. c) Cut a test piece using the press knife specified in 4.7. NOTE 2M