1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 14906:2012Leather Leather forautomotive Test methodsand testing parametersBS EN 14906:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation o
2、f EN 14906:2012. Itsupersedes DD CEN/TS 14906:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/69, Footwear, leather and coated fabrics.A list of organizations represented on this committee can beobtained on request to its secretary.This publica
3、tion does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 72630 9ICS 59.140.30Compliance with a British Standard cannot confer immunity fro
4、mlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2012.Amendments issued since publicationDate Text affectedBS EN 14906:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14906 May 2012 ICS 59.140.30 Supersedes CE
5、N/TS 14906:2004English Version Leather - Leather for automotive - Test methods and testing parameters Cuir - Cuir pour lautomobile - Mthodes dessai Leder - Automobilleder - Prfverfahren und PrfparameterThis European Standard was approved by CEN on 27 April 2012. CEN members are bound to comply with
6、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 such national standards may be obtained on application to the CEN-CENELEC Managem
7、ent 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 statu
8、s as the official versions. CEN members are the national standards bodies of 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,
9、 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 exploitation in any form and by any me
10、ans reserved worldwide for CEN national Members. Ref. No. EN 14906:2012: EBS EN 14906:2012EN 14906:2012 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions .64 General principles65 Sampling .66 Conditioning and sampling preparation .77 List of test m
11、ethods .78 Test reports 9Bibliography . 10BS EN 14906:2012EN 14906:2012 (E) 3 Foreword This document (EN 14906:2012) has been prepared by Technical Committee CEN/TC 289 “Leather”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either
12、 by publication of an identical text or by endorsement, at the latest by November 2012, and conflicting national standards shall be withdrawn at the latest by November 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/
13、or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes CEN/TS 14906:2004. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austri
14、a, 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, Turkey and the United Kin
15、gdom. BS EN 14906:2012EN 14906:2012 (E) 4 Introduction This document was prepared by CEN/TC 289 “Leather“ in order to provide the leather and the automotive industries with methods to be used for testing on which sellers and buyers can base their specifications and negotiations. BS EN 14906:2012EN 1
16、4906:2012 (E) 5 1 Scope This European Standard gives guidelines to select the test methods to assess the performance of leather for automotive. This document also specifies the sampling and conditioning procedures of specimens. NOTE Regulations on chemical substances in consumer goods might differ f
17、rom country to country requiring for any given market a special attention to restricted substances. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited
18、 applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 15987:2011, Leather Terminology Key definitions for the leather trade EN 20105-A02, Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colour (ISO 105-A
19、02) EN ISO 105-B06, Textiles Tests for colour fastness Part B06: Colour fastness and ageing to artificial light at high temperatures: Xenon arc fading lamp test (ISO 105-B06) EN ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location (ISO 2418) EN ISO 2419, Leather P
20、hysical and mechanical tests Sample preparation and conditioning (ISO 2419) EN ISO 2420, Leather Physical and mechanical tests Determination of apparent density (ISO 2420) EN ISO 2589, Leather Physical and mechanical tests Determination of thickness (ISO 2589) EN ISO 3376, Leather Physical and mecha
21、nical tests Determination of tensile strength and percentage extension (ISO 3376) EN ISO 3377-1, Leather Physical and mechanical tests Determination of tear load Part 1: Single edge tear (ISO 3377-1) EN ISO 4044, Leather Chemical tests Preparation of chemical test samples (ISO 4044) EN ISO 5402-1, L
22、eather - Determination of flex resistance - Part 1: Flexometer method (ISO 5402-1) EN ISO 9237, Textiles Determination of permeability of fabrics to air (ISO 9237) EN ISO 11640, Leather Tests for colour fastness Colour fastness to cycles of to-and-fro rubbing (ISO 11640) EN ISO 11644, Leather Test f
23、or adhesion of finish (ISO 11644) EN ISO 14087, Leather Physical and mechanical tests Determination of bending force (ISO 14087) EN ISO 14268, Leather Physical and mechanical tests Determination of water vapour permeability (ISO 14268) EN ISO 15700, Leather Tests for colour fastness Colour fastness
24、to water spotting (ISO 15700) EN ISO 15701, Leather Tests for colour fastness Colour fastness to migration into plasticized poly(vinyl chloride) (ISO 15701) BS EN 14906:2012EN 14906:2012 (E) 6 EN ISO 17071, Leather Physical and mechanical tests Determination of fogging characteristics (ISO 17071) EN
25、 ISO 17074, Leather Physical and mechanical tests Determination of resistance to horizontal spread of flame (ISO 17074) EN ISO 17076-2, Leather Determination of abrasion resistance Part 2: Martindale ball plate method (ISO 17076-2) EN ISO 17186, Leather Physical and mechanical tests Determination of
26、 surface coating thickness (ISO 17186) EN ISO 17226-3, Leather Chemical determination of formaldehyde content Part 3: Determination of formaldehyde emissions from leather (ISO 17226-3) EN ISO 17227, Leather Physical and mechanical tests Determination of dry heat resistance of leather (ISO 17227) EN
27、ISO 17228, Leather Tests for colour fastness Change in colour with accelerated ageing (ISO 17228) EN ISO 23910, Leather Physical and mechanical tests Measurement of stitch tear resistance (ISO 23910) ISO 2588, Leather Sampling Number of items for a gross sample ISO 26082-1, Leather Physical and mech
28、anical test methods for the determination of soiling Part 1: Rubbing (Martindale) method 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 15987:2011 and the following shall apply. 3.1 upholstery seat and headrest 3.2 trim armrest, dashboard, trim-panel
29、, steering-wheel, gear-knob 4 General principles This document considers different types of leather intended for automotive upholstery, trims, such as steering-wheels/gear-knobs. 5 Sampling 5.1 Laboratory samples shall be located and identified in accordance with EN ISO 2418. 5.2 The number of leath
30、er samples shall be in accordance with ISO 2588, if not otherwise agreed by the parties. BS EN 14906:2012EN 14906:2012 (E) 7 6 Conditioning and sample preparation Leather samples shall be conditioned and prepared for physical, mechanical and fastness tests in accordance with EN ISO 2419. Leather sam
31、ples for chemical tests shall be conditioned and prepared in accordance with EN ISO 4044. 7 List of test methods The following tables define test methods which should be used to test automotive leather. The parameters to be tested are divided in fundamental properties (Table 1) and complementary pro
32、perties (Table 2). Table 1 List of fundamental properties Basic property PropertyTest method Comments Basic parameters Apparent density, mass per unit area EN ISO 2420 Thickness EN ISO 2589 Surface coating thickness EN ISO 17186 Tensile properties Tensile strength EN ISO 3376 Elongation at break EN
33、ISO 3376 Elongation at defined forces EN ISO 3376 Tear load EN ISO 3377-1 Adhesion of finish EN ISO 11644 Stitch tear resistance EN ISO 23910 Stiffness in bending EN ISO 14087 Durability /wear Flex resistance EN ISO 5402-1 Abrasion EN ISO 17076-2 Ageing Colour change by heat and hydrolytic ageing EN
34、 ISO 17228 Conditions (temperature, humidity, time,) to be defined by customer requirements Dimensional change by heat ageing EN ISO 17227 (for shrinkage measurement) EN ISO 17228 (ageing procedures)Conditions (temperature, humidity, time,) to be defined by customer requirements Light fastness Colou
35、r fastness to artificial light at high temperatures EN ISO 105-B06 Exposure condition 3 normal; apparatus type C; filter system BS/SL; BS EN 14906:2012EN 14906:2012 (E) 8 delta E 4.3 0.4 for blue scale 6 for each cycle (exposed blue wool scale 6 shall be supported by a non exposed blue wool scale 6)
36、; sample evaluation: exposed region against original sample (without any ageing) according to EN 20105-A02 Colour fastness and ageing to artificial light at high temperatures EN ISO 105-B06 Exposure condition 3 normal; apparatus type C; filter system BS/SL; delta E 4.3 0.4 for blue scale 6 for each
37、cycle (exposed blue wool scale 6 shall be supported by a non exposed blue wool scale 6); sample evaluation: exposed region against original sample (without any ageing) according to EN 20105-A02 Fastness Fastness to and fro rubbing EN ISO 11640 Fastness to water spotting EN ISO 15700 Test surface to
38、be defined amount of water to be defined Emission behaviour Fogging EN ISO 17071 Gravimetric procedures only drying 7 days minimum Volatile organic compounds (VOC) No EN or ISO standard available at present See Note 1. Odour No EN or ISO standard available at present See Note 2. Formaldehyde emissio
39、n EN ISO 17226-3 Others Resistance to horizontal spread of flame EN ISO 17074 Further requirements according to legislation are discussed with customers Soiling and cleanability ISO 26082-1 Loose grain effect No EN or ISO standard available at present See Note 3. NOTE 1 Widely applied test methods f
40、or the determination of VOC are described in VDA 277 (Non-metallic materials in automotive interior trim Determination of emission of organic compounds) and VDA 278 (Thermal Desorption Analysis of Organic Emissions for the Characterization of Non-Metallic Materials for Automobiles). NOTE 2 A widely
41、applied test method for odour testing is described in VDA 270 (Determination of the odour characteristics of trim materials in motor vehicles). NOTE 3 A widely applied test method for determination of loose grain effect is described in VDA 230-205 (Automotive leather Determination loose grain effect
42、). BS EN 14906:2012EN 14906:2012 (E) 9 Table 2 List of complementary properties Basic property PropertyTest method Comments Fastness Colour fastness to migration EN ISO 15701 Resistance to insect repellents EN ISO 11640 10 cycles, 10 % elongation, 0.4 ml DEET (100 %, CAS 134-62-3) on the felt by pip
43、ette Resistance to sun lotion No EN or ISO standard available at present Standardized sun lotion is currently not available Others Water vapour permeability EN ISO 14268 Without pre-treatment Stick-slip-behaviour No EN or ISO standard available at present See Note. Permeability to air EN ISO 9237 Fo
44、r perforated leather only, (test area 100 cm2, pressure drop 100 Pa, leather surface to suction side, without correction of side effect NOTE A widely applied test method for determination of stick slip effect is described VDA 230-206-1 (Examination of the stick-slip behaviour of material pairs Gener
45、al section) and VDA 230-206-2 (Examination of the stick-slip behaviour of material pairs Specific section Leather: Leather against Leather). 8 Test reports The test reports shall contain at least the information defined in used standard test methods. The test reports should also include additional i
46、nformation (e.g. special evaluation of specimens) requested in specifications. BS EN 14906:2012EN 14906:2012 (E) 10 Bibliography 1 International glossary of leather terms (EnglishGermanItalian), 2ndedition, revised, pp.320, 1975 (reprinted with addenda incorporated, 1997) 2 VDA 230-205, Automotive l
47、eather Determination of loose grain effect 3 VDA 230-206-1, Examination of the stick-slip behaviour of material pairs General section 4 VDA 230-206-2, Examination of the stick-slip behaviour of material pairs Specific section Leather: Leather against Leather 5 VDA 270, Determination of the odour cha
48、racteristics of trim materials in motor vehicles (currently only available in German language) 6 VDA 277, Non-metallic materials in automotive interior trim Determination of emission of organic compounds (currently only available in German language) 7 VDA 278, Thermal Desorption Analysis of Organic
49、Emissions for the Characterization of Non-Metallic Materials for Automobiles (currently only available in German language) This page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services. It presents the UK view on standards in Europe and at the international level. BSI is incorporated
