SIST EN 25978:1999
(Main)Rubber- or plastics-coated fabrics - Determination of blocking resistance (ISO 5978:1990)
Rubber- or plastics-coated fabrics - Determination of blocking resistance (ISO 5978:1990)
This standard specifies a method for determination of the blocking resistance of rubber or plastics coated fabrics.
Gummi- oder kunststoffbeschichtete Textilien - Bestimmung des Blockwiderstandes (ISO 5978:1990)
Supports textiles revetus de caoutchouc ou de plastique - Détermination de la résistance au blocage (ISO 5978:1990)
La présente Norme internationale prescrit une méthode pour la détermination de la résistance au blocage des supports textiles revêtus de caoutchouc ou de plastique. La méthode prescrite est acceptable dans la plupart des cas. Si l'on désire utiliser des conditions autres que celles prescrites, elles peuvent faire l'objet d'un accord mutuel entre les parties contractantes, mais de telles variations seront à mentionner dans le rapport d'essai.
Gumirane ali plastificirane tekstilije - Ugotavljanje odpornosti proti zlepljenju in luščenju
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.OXãþHQMXGummi- oder kunststoffbeschichtete Textilien - Bestimmung des Blockwiderstandes (ISO 5978:1990)Supports textiles revetus de caoutchouc ou de plastique - Détermination de la résistance au blocage (ISO 5978:1990)Rubber- or plastics-coated fabrics - Determination of blocking resistance (ISO 5978:1990)59.080.40WHNVWLOLMHCoated fabricsICS:Ta slovenski standard je istoveten z:EN 25978:1993SIST EN 25978:1999en01-marec-1999SIST EN 25978:1999SLOVENSKI
STANDARD
SIST EN 25978:1999
SIST EN 25978:1999
SIST EN 25978:1999
INTERNATIONAL STANDARD ISO 5978 Second edition 1990-02-15 Rubber- or plastics-coated fabrics - Determination of blocking resistance Supports textiles revetus de caoutchouc ou de plastique - Determination de la rksistance au blocage Reference number ISO 5978: 199O(E) SIST EN 25978:1999
ISO 5978:199O(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. Esch 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 patt in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Oraft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with lS0 procedures requiring at least 75 % approvai by the member bodies voting. International Standard ISO 5978 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products. This second edition cancels and replaces the fit-st edition (ISO 5978:1979), of which it constitutes a minor technical revision. 0 ISO 1990 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN 25978:1999
ISO 5978:1990(E) lntroduction Blocking tests at elevated temperatures are designed to estimate the relative resistance of rubber- or plastics-coated fabrics to blocking. For this purpose, the coated fabric is subjected to a specified load over a defined area at a specific temperature. . . . Ill SIST EN 25978:1999
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INTERNATIONAL STANDARD ISO 5978:199O(E) Rubber- or plastics-coated fabrics - Determination of blocking resistance 1 Scope This International Standard specifies a method for the determination of the resistance of rubber- or plastics-coated fabrics to blocking. The method specified is acceptable in most cases. If it is desired to use conditions other than those specified, these may be mutually agreed between the contracting Parties but such variations shall be stated in the test report. 2 Normative reference The following Standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the edition indicated was valid. All Standards are subject to revision, and Parties to agreements based on this International Standard are encour- aged to investigate the possibility of applying the most recent edition of the Standard indicated below. Members of IEC and ISO maintain registers of cur- rently valid International Standards. ISO 2231:1989, Rubber- or plastics-coated fabrics - Standard atmospheres for conditioning and testing. 3 Definition For the purposes of this International Standard, the following definition applies. blocking: An unintentional adherence between ma- terials. [Definition taken from ISO 472:1988, Plastics - Vo- cabulary.] 4 Apparatus 4.1 Glass plates, measuring approximately 150 mm x 150 mm x 3 mm. 4.2 Weight-piece, of mass 5,0 kg. 4.3 Circulating-air oven, of such a size that the total volume of the test assemblies does not exceed 10 % of the free space in the oven. Provision shall be made for placing the test assem- blies on shelves so they are not less than 50 mm from each other or from the sides of the oven. The nature of the Source of heat is optional but the Source shall be located in the air supply of the oven. Provision shall be made for circulation of air through the oven at a rate such as to provide a minimum of six air changes per hour. The temperature of the oven shall be thermostatically controlled to maintain the temper- ature of the test assemblies within +2 “C of the - specified
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