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1、INTERNATIONAL STANDARD ISO 1997 Second edition 1992-12-01 Granulated cork and cork powder - Classification, properties and packing Granuk crus et poudre de liege - Classification, caracteristiques et emballage Reference number ISO 1997:1992(E) Copyright International Organization for Standardization
2、 Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:25:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1997:1992(E) Foreword ISO (the International Organization for Standardization) is a worldwide feder
3、ation 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 commit
4、tee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (1 EC) on all matters of electrotechnical standardization. Draft International Standards adopted by the te
5、chnical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 1997 was prepared by Technical Committee ISODC 87, Cork. This second edition cancels and repl
6、aces the first edition (ISO 1997:1972), of which it constitutes a technical revision. 0 ISO 1992 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 per- mission in writing
7、 from the publisher. International Organization for Standardization Case Postale 56 l CH-1 211 Geneve 20 l Switzerland Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale,
8、 04/26/2007 03:25:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1997:1992(E) Introduction The use of granulated cork which has been packed and transported in pressed bales presents some Problems for the ultimate User, particularly with regard to bringing its appare
9、nt density back to pre-pressing level. The attention of suppliers is drawn to the necessity of avoiding too high a rate of compression, which might considerably affect the characteristics of the granulated cork as available to the ultimate User. This compression should not affect either the bulk den
10、sity or the granule size values except specific tolerantes agreed between Seller and buyer. . . . Ill Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:25:26 MDTNo reproduction
11、or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:25:26 MDTNo reproduction or networkin
12、g permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 1997:1992(E) Granulated cork and cork powder - Classification, properties and packing 1 Scope 4 Classification This International Standard specifies the classification Granulated cork and cork powder are classified ac- and propert
13、ies of granulated cork and cork powder cording to the size of the granules and their bulk before pressing, as weil as the methods of packing. density. 2 Normative references 4.1 Classification by grain size The following Standards contain provisions which, through reference in this text, constitute
14、provisions of this International Standard. At the time of publica- tion, the editions indicated were valid. All Standards are subject to revision, and Parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent editions of th
15、e Standards indicated below. Members of IEC and ISO maintain registers of cur- rently valid International Standards. Granulated cork and cork powder, tested as described in ISO 2030:1990, clause 6, are classified according to the apertures of the upper and lower sieves? showing the granule size dist
16、ribution obtained. 4.2 Classification by bulk density ISO 633:1986, Cork - Vocabulary. ISO 2030: 1990, Granulated cork - Size analysis by mechanical sieving. Granulated cork tested as described in ISO 2031 is classified into six groups according to bulk density, as shown in table 1. ISO 2031:1991, G
17、ranulated cork - Determination of bulk density. Table 1 - Classification by bulk density Bulk density p Classification kg/ms ISO 2067:1988, Granulated cork - Sampling. ISO 2190:1988, Granulated cork - Determination of mois ture con ten t. 3 Definitions 40150 4o-c p l20 For the purposes of this Inter
18、national Standard, the definitions given in ISO 633 apply. 1) See ISO 565:1990, Test sieves - Metal wie cloth, perforated metal plate and electroformed sheet - Nominal sizes of openings. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Tec
19、hnical Standards 1/9972545001 Not for Resale, 04/26/2007 03:25:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1997:1992(E) 5 Designation Granulated cork and cork powder are designated by their granule size (maximum and minimum) and their bulk density. EXAMPLE: Granu
20、lated IJ2 - 40150 6 Properties 6.1 Granule size See 4.1 and ISO 2030. 6.2 Bulk density See 4.2 and ISO 2031. 6.3 Moisture Granulated cork and cork powder shall be described as commercially dry if their moisture content, deter- mined in accordance with ISO 2190, is under 10 % (milled cork not include
21、d). NOTE 1 adjustm Moisture content ents in the mass of t above this he bales. Iimit gives rise to 6.4 Cork powder eontent The amount of cork powder in granulated cork in all the categories indicated (4.2) shall not exceed 0,5 %. 7 Sampling See ISO 2067. 8 Packing Granulated cork and cork powder may
22、 be packed in bales, Sacks or cartons. If packed in bales, the granulated cork and cork pow- der should be compressed, covered and reinforced with hooping and/or baling wire. Wooden Strips may be used as additional reinforcement. The tare of bales without wooden Strips shall not ex- ceed 5 % of the
23、total mass, and the tare of bales with wooden Strips shall not exceed 7 %. 9 Marking Besides any other required marks, bales shall show the trading name or brand of the Producer and/or exporter as weil as the name of the exporting country. Copyright International Organization for Standardization Pro
24、vided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:25:26 MDTNo reproduction or networking permitted without license from IHS -,-,- This page intentionally left blank Copyright International Organization for Standardization Provided by IHS
25、 under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:25:26 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1997:1992(E) UDC 674.83-492.2/.3 Descriptors: cot-k, granular materials, powdery materials, classification, specifi
26、cations, materials specifications, designation, marking, packaging. Price based on 2 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/26/2007 03:25:26 MDTNo reproduction or networking permitted without license from IHS -,-,-