ISO INTERNATIONAL STANDARD 9958-2 First edition 1992-11-01 Draughting media for technical drawings Draughting film with polyester base Part 2: Determination of properties Supports de tracage pour dessins techniques -- Films a dessin a base depolyester Partie 2:Determination des proprietes Referencenumber ISO 9958-2:1992(E) ISO9958-2:1992(E) Foreword Iso (the International Organization for Standardization)is a worldwide federation of national standards bodies (isO member bodies).The work of preparing International Standards is normally carried out through isO technical committees.Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closely with the Internalional Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.Publication as an Inter- national Standard requires approval by at least75%ofthemember bodies casting a vote. International Standard sog958-2wasprepared byTechnicai Committee Iso/Tc 10,Technicaldrawings,product definition and related documen- tation,Sub-Committee Sc 9,Media and equipment for drawing and re- lated docunentation. ISO 9958 consists of the following parts、underthegeneral title Draughting mediafor technical drawings Draughtingfilmwithpoly- esterbase: Part 1:Requirements and marking --Part2:Defermination of properties AnnexAofthispartofIso9958isfor informationonly C iso 1992 All rights reservecd. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanicai, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case Postale 56CH-1211Geneve 20·Switzerland Printed in Switzerland ii INTERNATIONALSTANDARD ISO 9958-2:1992(E) Draughting media for technical drawings -- Draughting film with polyester base Part 2: Determination of properties 1 Scope ISO 9177-1:1989, Mechanical pencils Part 1: Classification, dimensions, performance require- ments and testing. This part of IsO9958 specifies test methods for de- termining the properties of draughting film with a biaxially oriented polyethylene terephthalate base IsO9177-2:1989,Mechanicalpencils-Part2:Black leads--. Classificationand dimensions. (commonlyknown asapolyesterbase),tobeused medium for drawn se and written information Iso 9957-1:1992,Fluid draughting media which it is possible to duplicate, revise and store. Part 1: Water-based India ink for tracing paper -- Require- ments and test conditions. ISO9958-1:1992, Draughting media for technical Normative references 2 drawings -- Draughting film with polyester base Part 1:Requirements and marking. The following standards contain provisions which, through reference in this text, constitute provisions IEC93:1980.Methods oftestforvolumeresistivity of this part of Iso 9958.At the time of publication and surface resistivity of solid electrical insulating the editions indicated were valid. All standards are materials subjectto revision, and partiestoagreements based on this part of iso 9958 are encouraged to investi- gate the possibility of applying the most recent edi- tions of the standards indicated below. Members of iEc and Iso maintain registers of currently valid 3 Definitions International Standards. For the purposes of this part of iso 9958, the defi- Iso5-2:1991,Photography--L Density measurements nitions given in ISO 9958-1 apply Part 2. Geometric conditions for transmission density. tso 5-3:1984, Photography -- Density measurements -Part3:Spectral conditions. 4 Testing -- General Iso6221:1991,Photography---Filmsandpapers The atmosphere for conditioning and testing shall Determination ofdimensional change. be(23±2)°C