ISO INTERNATIONAL STANDARD 11857 First edition 1999-04-15 Textile floor coverings Determination of resistance to delamination Revetements de sol textiles - Determination de la résistance a la delamination ISO Reference number ISO 11857:1999(E) ISO 11857:1999(E) Foreword IsO (the International Organization 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.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas liaison with 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/lEC Directives, Part 3 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. International Standard 11857 was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 12, Textile floorcoverings. @ISO1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. InternationalOrganizationforStandardization Case postale 56. CH-1211 Geneve 20· Switzerland Internet [email protected] Printed in Switzerland ISO 11857:1999(E) INTERNATIONALSTANDARD@ISO Textile floor coverings Determination of resistance to delamination 1 Scope textile floor coverings. It is applicable to all types of textile floor coverings with a secondary or foam backing. The results obtained by this method are useful as a control of production but cannot be considered to be a reliable indication of in-use performance. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these undated references, the latest edition of the normative document referred to applies. Members of IEC and isO maintain registers of currently valid International Standards. Iso 139, Textiles - Standard atmospheres for conditioning and testing. Iso 1957, Machine-made textile floor coverings - Sampling and cutting specimens for physical tests. 3 Definition For the purpose of this International Standard the following definition applies. 3.1 delamination force expressed in newtons 4 Principle The end of a test specimen is delaminated by hand and the force to continue delamination is measured on an autographic tensile strength tester under specified conditions. 5 Apparatus 5.1 Tensile testing machine, capable of being operated at a constant rate of extension (CRE) of 300 mm/min ± 10 mm/min. 5.2 Clamping system, having serrated or padded jaw faces with a minimum area of 25 mm × 75 mm designed to prevent slippage in the clamps during testing 1