ISO INTERNATIONAL STANDARD 18903 First edition 2002-07-01 Imaging materials Films and paper . Determination of dimensional change Materiaux pour I'image Films et papiers - Détermination des variations dimensionnelles Reference number A ISO 18903:2002(E) TSO @ ISO 2002 IHS under Not for Resale ISO18903:2002(E) PDFdisclaimer 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 area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation 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 unlikely event ?ISO2002 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. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.ch Web www.iso.ch Printed in Switzerland ISO 2002 - All rights reserved Not for Resale ISO 18903:2002(E) Contents Page Foreword Introduction .vi 1 Scope 2 Normative reference... 3 Terms and definitions 4 Measurement technique. 5 Sampling.. 5.1 Selectionofspecimens.. 5.2 Handling of specimens 5.3 Conditioning of specimens. 5.4 Processing of specimens . 6 Conditioning.. 6.1 Constant humidity chamber 6.2 Standard temperature and humidity. 7 Test for humidity coefficient of expansion 7.1 Procedure 7.2 Calculations . 7.3 Test report.. 8 Test for thermal coefficient of expansion 8.1 General. 8.2 Procedure 8.3 Calculations 8.4 Test report. 6 Test for dimensional change due to processing 9.1 General.. 9.2 Coding system.. 9.3 Procedure 9.4 Calculations 9.5 Test report. 10 Test for dimensional change due to processing plus ageing... 10.1 Ageing conditions 10.2 Ageing time. 10.3 Procedure 10.4 Calculations 10.5 Testrepor ili Copyright Interna HS under Not for Resale