ISO INTERNATIONAL STANDARD 12632 Firstedition 2015-12-15 Graphic technology Ink, paper and labels Requirements on hot alkali penetration and resistance Technologie graphique -Encres, papier et étiquettes-Exigences de pénétrabilité et résistance aux alcalins chauds Reference number IS0 12632:2015(E) SO International Organization for Standardization @ IS0 2015 ZHEJIANG INSTOFSTANDARDIZATION C15956617 itted without license from IHS IS0 12632:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, 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 copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ganizationforStandardization ensee-ZHEJIANG INST OF STANDARDIzARoISQ15- All rights reserved Not for Resale, 2016/3/29 03:05:37 etworking permitted without license from IHS IS0 12632:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Terms and definitions 3 Principle 3.1 Test method for the penetration time of hot alkaline solution on labels .1 3.2 Test method for the removal time of labels by hot alkaline solution .2 3.3 Test method for the resistance of labels against hot alkaline solution. .2 4 Apparatus and reagents .2 4.1 .2 Apparatus. 4.2 Reagents 2 4.3 Preparation of the thymolphthaleine containing glue .3 5 Specimens .3 5.1 Penetrationandremovaltime 3 5.2 Resistance against hot alkaline solution .3 6 Test procedure .3 6.1 Penetrability time of hot sodium hydroxide solution through labels. .3 6.2 Removal time of labels 6.3 Resistance against hot alkaline solution 4 7 Test report 4 iii e=ZHEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS under thout license from IHS Not for Resale, 2016/3/29 03:05:37