ISO INTERNATIONAL STANDARD 8296 Secondedition 2003-09-01 Plastics Film and sheeting - Determination of wetting tension Plastiques -Film et feuille-Determination de la tension de mouillage Reference number ISO 8296:2003(E) @ ISO 2003 No reproduction or networking permitted without license from IHS Not for Resale ISO 8296:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the @ISO2003 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 either Iso at the address below or Iso's member body in the country of the requester. ISO copyright office Case postale 56·CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2003 - All rights reserved No reproduction or networking permited without license from IHS Not for Resale ISO 8296:2003(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies technicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeer non-governmental, in liaison with IsO, also take part in the work. ISO collaborates closely with the International 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 to 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 8296 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 11, Products. This second edition cancels and replaces the first edition (iSO 8296:1987), of which it constitutes a minor 6cm². ii Not for Resale ISO 8296:2003(E) INTERNATIONALSTANDARD Plastics Film and sheeting Determination of wetting tension 1 Scope 1.1 This International Standard specifies a method for determining the wetting tension of surfaces of plastic film and sheeting in contact with drops of specific test solutions 1.2 The ability of plastic films to retain inks, coatings, adhesives, etc., is primarily dependent on the character of their surfaces, and can be improved by one of several surface-treatment techniques. These same treatment techniques have been found to increase the wetting tension of a plastic film surface in contact with mixtures of solvents.Itisthereforepossibletorelatethewettingtensionof aplasticfilmsurfaceto itsabilitytoacceptand retaininks,coatings,adhesives,etc.Themeasuredwettingtensionofaspecificfilmsurfacecanonlyberelated to acceptable ink, coating, or adhesive retention through experience. Wetting tension, in itself, is not a completely acceptable measure of ink, coating or adhesive adhesion. 1.3 Any contamination of the film surface and any trace of surface-active impurities in the liquid reagents may apparatus, in particular, is likely to be contaminated with detergents having very strong surface tension reducing ability, unless specific precautions are taken to ensure their absence such as by cleaning with an oxidizing agent, for example chromic-sulfuric acid or sulfuric acid-ammonium peroxydisulfate, and rinsing with distilled water. 1.4