ISO INTERNATIONAL STANDARD 9073-4 Third edition 2021-01 Nonwovens Test methods - Part 4: Determination of tear resistance by the trapezoid procedure Nontissés-Méthodes d'essai- Partie 4: Détermination de la résistance a la déchirure par la méthode dutrapeze Reference number IS0 9073-4:2021(E) OS1 @ ISO 2021 IS0 9073-4:2021(E) COPYRIGHTPROTECTEDDOCUMENT IS02021 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting below or ISo's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved