ISO INTERNATIONAL STANDARD 15359 First edition 1999-09-01 Paper and board Determination of the static and kinetic coefficients of friction - Horizontal plane method PapieretcartonDeterminationdescoefficientsdefrottementstatiqueet cinétiqueMethodedu plan horizontal ISO Reference number ISO15359:1999(E) yIHSunder Not for Resale ISO 15359:1999(E) Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(lso committees. Each member body interested in a subject for which a technical committee has been established has liaison with ISO, also take part in the work. iSsO collaborates closely with the International Electrotechnical Commission(lEC)onallmattersofelectrotechnicalstandardization International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 3. International Standard ISO 15359 was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, Subcommittee SC 2, Test methods and quality specifications for paper and board. Annexes A and B of this International Standard are for information only. @ISO1999 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 microtilm,withoutpermissioninwritingtromthepublisher nternationalOrganizationforStandardization Case postale 56·CH-1211Geneve 20·Switzerland Internet [email protected] Printed in Switzerland ational Organization for Standardizatior @ISO ISO15359:1999(E) Introduction This International Standard describes a procedure for the determination of the static and kinetic coefficients of friction of paper or board by the horizontal plane method. The condition of the surfaces of a paper depends on their history. Their frictional properties are largely determined by the static and kinetic coefficients of friction which are determined, in this International Standard, by sliding one vertical force applied to the upper material. The friction property relates to the horizontal force required to initiate and maintain movement between the two surfaces. The coefficients of friction are properties of two surfaces. The values obtained for the coefficients are influenced by test conditions. The condition of the two surfaces under the conditions specified in this International Standard may or may not relate to the condition of the surfaces in a specific end-use situation. Nevertheless, the test results are useful in determining the combined properties of the surfaces tested. The coefficients of friction of a machine-made paper can be different when measured in the machine direction, MD, For certain papers, e.g. copy paper, only the static coefficient of friction at the first slide, i.e. the coefficient obtained without any previous sliding of the surfaces across each other, between the lower surface of one sheet of paper and thecoefficientsoffrictionofwornsurtaces,onetestpieceiscausedtoslidewithrespecttotheothertestpiece three times. The force required to initiate and maintain sliding on the third slide is measured. evaluated Annex A provides a list of recommended symbols to indicate the directions and positions of the surfaces tested. plastics A bibliography follows the annexes. ili