ISO INTERNATIONAL STANDARD 12636 Second edition 2018-01 Graphic technology Blankets for offset printing Technologie graphique - Blanchets pour impression offset Reference number IS0 12636:2018(E) so @IS02018 IS0 12636:2018(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2018 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 on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 40i: Ch. de Blandonnet 8 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Published in Switzerland ii @ IS0 2018 - All rights reserved IS0 12636:2018(E) Contents Page Foreword ..iv Introduction. 1 Scope. 2 Normative references 3 Terms and definitions 4 Requirements .2 4.1 Information. .2 4.2 Dimension .3 4.2.1 Thickness. .3 4.2.2 Mean thickness ..3 4.2.3 Accuracy of width and length .3 4.2.4 Planview 4.3 Elongation. 4 4.4 Tensile strength ..4 4.5 Compressibility. 4 4.6 Thickness change .4 4.6.1 Swelling and/or shrinkage due to printing ink component 4.6.2 Swelling and/or shrinkage due to blanket washes ..4 4.7 Cut blanket markings ..4 5 Test methods. 5.1 General 4 5.2 Thickness. ..4 5.3 Elongation. 5 5.4 Tensile strength .5 5.5 Load at specific deflection. .5 5.6 Compressibility-Deflection .6 5.7 Compressibility- Indentation 6 5.8 Surface texture .8 5.9 Thickness change. .9 5.9.1 Swelling or shrinkage after exposure to a test liquid .9 5.9.2 Swelling or shrinkage after recovery from exposure to a test liquid 5.9.3 Exposure conditions for printing ink ingredients. .10 5.9.4 Exposureconditionsforwashes .10 5.9.5 Report. .10 Bibliography .11 @ IS0 2018 - All rights reserved iii