1、BRITISH STANDARD Footwear - Ageing conditioning The European Standard EN 12749:1999 has the status of a British Standard ICs 61.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 12749:1999 STDeBSI BS EN 12749-ENGL 1999 W Lh54bh9 OBLBLBO bT3 m BS EN 12749:1999 AmdNo. Na
2、tional foreword Date Comments This British Standad is the English language vemion of EN 127491999. The UK participation in its preparation was entrusted to Technical Committee TW69, Footwear and leather, which has the responsibility to: - aid enquirem to understand the te% - present to the responsib
3、le European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the K interests informed them in the UK. A list of organizalions represented on this committee can be obtained on request to its secre
4、-. Cross-references The British Stanhds which implement internationai or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Internaiional Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Elec
5、tronic Catalogue. A British Standard does not purport to include ali the necessary provisions of a contract Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This do
6、cument comprises a hnt cover, an inside front cover, the EN title page, pages 2 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. This British Standard, having been prepared under the direction of the Secm Committee for Materiais
7、and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 December 1999 O BSI 12-1999 ISBN O 580 35283 8 Amendments issued since publication STD-BSI BS EN 12749-ENGL li999 H Lb24bb9 0818181 53T D EUROPEAN STANDARD EN 12749 NORME EUROPENNE EUROPAISCHE NOR
8、M September 1999 ICs 61 .O60 English version Footwear - Ageing conditioning Chaussures - Conditionnement en vue du vieillissement Schuhe - Konditionierung fr die Alterungsprufung This European Standard was approved by CEN on 9 August 1999. CEN members are bound to comply with the CENICENELEC Interna
9、l Regulations which stipulate the conditions for giving this Europmn Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning sich national standards may be obtained on application to the Central secretariat or to any CEN member. T
10、his European Standard exists in three official versions (English, French, Geman). A version in any other language made by trmslation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as tie official versions. CEN members are th
11、e national standards bodies of Austria, Belgium. Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Noway. Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EU
12、ROPEN DE NORMALISATION Central Secretariat: rue de Stassart, 36 B-1050 Brussels O lY99 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12749:1999 E Page 2 EN 12749i1999 Contents Page Foreword . 3 1 Scope . 4 2 Normative references
13、4 3 Definitions . 4 4 Apparatus and material . 4 5 Sampling and conditioning . 4 6 Procedure . 5 7 Expression of results 5 8 Test Report . 5 O BSI 12-1999 STD-BSI BS EN 12749-ENGL 1999 m Lb24bb9 08LBL83 302 m Page 3 EN 12749:1999 Foreword This European Standard has been prepared by Technical Committ
14、ee CEN/TC 309, Footwear, the Secretariat of which is held by AENOR. 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 March 2000, and conflicting national standards shall be withdrawn at the latest
15、by March 2000. According to the CENXENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherland
16、s, Noway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. O BSI 12-1999 , Page 4 EN 12749: 1999 1 Scope This standard specifies laboratory procedures which are intended to imitate the effects of naturally occurring reactions. The physical properties of interest are measured before and a
17、fter the application of the specifed treatments. The effect of the ageing procedures on any of the physical properties of the material may be examined. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative refere
18、nces are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the l
19、atest edition of the publication referred to applies. EN 12222 Footwear - Standard atmospheres for conditioning and testing of footwear and components for footwear. prEN 13400: 1998 Footwear - Sampling location of components for footwear. 3 Definitions For the purpose of this standard the definition
20、s given in the relevant European Standard for the specific test methods apply. 4 Apparatus and material The following apparatus and material shall be used: 4.1 For heat ageing Oven, with forced circulation, capable of maintaining the temperature of 70 OC f 2 “C. 4.2 For humidity ageing 4.2.1 The age
21、ing apparatus shall be of such a size that the total volume of test pieces does not exceed 10% of the free air space, and such that the test pieces are free of strain, freely exposed to the ageing atmosphere on all sides and not exposed to light. 4.2.2 Glass vessel A glass vessel with a suitable clo
22、sure for maintaining the test pieces at a relative humidity of loo%, and a water- bath or drying oven for heating the vessel, capable of maintaining the temperature of 70C f 2 OC. 5 Sampling and conditioning The number, size and shape of the test pieces shall be appropriate to the property being exa
23、mined, and sampling shall be done according to prEN 13400:1998 before ageing, with the dimensions defined in the particular test. O BSI 12-1999 Page 5 EN 12749:1999 6 Procedure After conditioning, the test of the required physical property shall be performed and the test pieces shall be brought rapi
24、dly to the ageing condition. The duration of heat ageing and of humidity ageing is 168 h f 2 h. At the end of the ageing treatment, condition the test pieces for 24 h according to EN 12222 before testing. 7 Expression of results The percentage change in the property being examined is given by the fo
25、rmula - Xa - x 100 - xo where - xo is the average value of the property before ageing; - Xa is the average value of the property after ageing. 8 Test Report The test report shall include the following information: a) b) cl d) e) f) . date of testing. results, expressed in accordance with clause 7; f
26、ull identification of the sample; reference to this method of test; indicate whether the test is heat ageing or humidity ageing; the properties determined, with their individual values before and after ageing and, if appropriate, the percentage change; Q BSI 12-1999 BSI 389 Chiswick High Road London
27、 1x4 4AL BS EN 12 749: 1999 BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the intemational level. It is incorporated by Royal Charter. Revisions British Standards are updated
28、 by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British St
29、andard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel 020 8996 9OOO. Fax: 020 8996 7400. BSI offers members an individual up- service called PLUS which ensures that subscribers automatically receive the latest edit
30、ions of standards. Buying standards Orders for aii BSI, internaional and foreign standards publications should be addressed to Customer Services. Tel 020 8996 9001. Fax: 020 8996 7001. In response to orders for intemational standards, it is BSI policy to supply the BSI implementation of those that h
31、ave been published as British Standards, unless otherwise requested. Information on standards BSI provides a wide range of information on national, European and intemational standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are als
32、o available which give details on all its products and services. Contact the Infomation Centre. Tek 020 8996 71 11. Fax: O20 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantia discounts on the purchase price of standards. For details of these
33、 and other benefits contact Membership Administrati on. Tel O20 8996 7002. Fax: O20 8396 7001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the intemational standarcbation bodies. Except as permitted under the Copynght, Designs
34、 and Patents Act 1988 no extract may be reproduced, stored in a retried system or -ansmitted in any form or by any means - electronic, photocopying, recordmg or otherwise - without prior written permission from BSI. This does not preclude the fiee use, in the course of implementing the standard, of
35、necessary details such as symbols, and size, type or grade designations. If these details axe to be used for any other purpose than implementation then the prior written permission of BSI must be obtained if permission is granted, the terms may include royaly payments or a licensing agreement Details and advice can be obtained from the Copynght Manager. Tel O20 8996 7070.
