1、 IEC/PAS 61249-6-3 Edition 1.0 2011-09 PUBLICLY AVAILABLE SPECIFICATION Specification for finished fabric woven from“E”glass for printed boards IEC/PAS 61249-6-3:2011(E)Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further
2、reproduction or distribution is permitted.Uncontrolled when printed.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2011 IEC,Geneva,Switzerland 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 mechani
3、cal,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address b
4、elow or your local IEC member National Committee for further information.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes I
5、nternational Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.Catalogue o
6、f IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on
7、all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and F
8、rench,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary online.Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ
9、 or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC/PAS 61249-6-3 Edition 1
10、.0 2011-09 PUBLICLY AVAILABLE SPECIFICATION Specification for finished fabric woven from“E”glass for printed boards INTERNATIONAL ELECTROTECHNICAL COMMISSION T ICS 31.180 PRICE CODE ISBN 978-2-88912-699-6 Registered trademark of the International Electrotechnical Commission Copyrighted material lice
11、nsed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 PAS 61249-6-3 IEC:2011(E)CONTENTS FOREWORD.4 1 Scope.6 1.1 Purpose.6 1.2 Designation.6 2 Normative references.6 2.1 IPC.6 2.
12、2 American Society for Testing and Materials(ASTM).6 2.3 International Standards.6 2.4 National Conference of Standards Laboratories(NCSL).6 3 Terms and definitions.6 4 Requirements.9 4.1 Yarn nomenclature.9 4.1.1 US system.9 4.1.2 SI/metric.9 4.1.3 Conversion from US system to SI.10 4.2 Visual requ
13、irements.10 4.3 Physical requirements.10 4.3.1 Fabric count.10 4.3.2 Weave type.10 4.3.3 Fabric thickness.10 4.3.4 Fabric weight.10 4.3.5 Fabric length.10 4.3.6 Fabric width.11 4.3.7 Feather length.11 4.3.8 Filament diameter.11 4.3.9 Bare glass nominal measurement.12 4.4 Chemical requirements.12 4.4
14、.1 Finish level(organic content).12 4.5 Workmanship.12 4.6 Laser machinability performance.12 4.7 Alternate fabric styles and weaves.12 5 Quality assurance.13 5.1 Statistical process control(SPC).13 5.2 Responsibility for inspection.13 5.2.1 Test equipment and inspection facilities.14 5.2.2 Preparat
15、ion of samples.14 5.2.3 Standard laboratory conditions.14 5.3 Inspection requirements and acceptability.14 5.3.1 Sample size.14 5.3.2 Sampling plans.15 5.3.3 Acceptable quality level(AQL).15 5.4 Test methods.15 5.4.1 Fabric appearance.15 5.4.2 Fabric count.15 5.4.3 Weave type.16 5.4.4 Fabric thickne
16、ss.16 Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.PAS 61249-6-3 IEC:2011(E)3 5.4.5 Weight per unit area.16 5.4.6 Fabric length.17 5.4.7 Fabric width.17 5.4.8 Finish level(organic content).17 5.4.9 Bias or bowed filling.17 6 Preparation for delivery.18 6.1 Preservation and packaging.18 6.2 Packing.18 6.3 Marking.18 7 Notes.18 7.1 Ordering d