1、BRITISH STANDARD BSISO 1997:1992 Implementation of ISO 1997:1992 Granulated cork and cork powder Classification, properties and packing UDC 674.83-492.2/.3BSISO 1997:1992 This British Standard, having been prepared underthe direction of the Plastics and Rubber Standards Policy Committee, was publish
2、ed under the authority of the Standards Board and comes into effect on 15 March 1993 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference PRM/60 Draft for comment 91/44959 DC ISBN 0 580 22071 0 Committees responsible for this British Standard The preparat
3、ion of this British Standard was entrusted by the Plastics and Rubber Standards Policy Committee (PRM/-) to Technical Committee PRM/60, upon which the following bodies were represented: British Adhesives and Sealants Association British Board of Agrment British Floor Covering Manufacturers Associati
4、on British Railways Board British Rubber Manufacturers Association Ltd. Consumer Policy Committee of BSI Contract Flooring Association Cork Industry Federation Department of the Environment (Building Research Establishment) Federation of Plastering and Drywall Contractors Health Care Supplies South
5、West Royal Institute of British Architects Amendments issued since publication Amd. No. Date CommentsBSISO1997:1992 BSI 01-2000 i Contents Page Committees responsible Inside front cover National foreword ii Foreword iii Text of ISO 1997 1BSISO 1997:1992 ii BSI 01-2000 National foreword This British
6、Standard reproduces verbatim ISO 1997:1992 and implements it as the UK national standard. This British Standard is published under the direction of the Plastics and Rubber Standards Policy Committee whose Technical Committee PRM/60 has the responsibility to: aid enquirers to understand the text; pre
7、sent to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas standards, ar
8、e available from BSI Sales Department, BSI, Linford Wood, Milton Keynes, MK14 6LE. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itsel
9、f confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theISO title page, pages ii to iv, pages1 and 2 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This
10、will be indicated in the amendment table on the inside front cover.ISO1997:1992(E) ii BSI 01-2000 Contents Page Foreword iii Introduction 1 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Classification 1 5 Designation 1 6 Properties 1 7 Sampling 2 8 Packing 2 9 Marking 2 Table 1 Classification
11、 by bulk density 1 Descriptors: Cork, granular materials, powdery materials, classification, specifications, materials specifications, designation, marking, packaging.ISO1997:1992(E) BSI 01-2000 iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of nation
12、al 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. Internatio
13、nal organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committe
14、es 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 ISO/TC 87, Cork. This second edition cancels and replaces the first
15、edition (ISO 1997:1972), of which it constitutes a technical revision.iv blankISO 1997:1992(E) BSI 01-2000 1 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 apparent
16、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 densit
17、y or the granule size values except specific tolerances agreed between seller and buyer. 1 Scope This International Standard specifies the classification and properties of granulated cork and cork powder before pressing, as well as the methods of packing. 2 Normative references The following standar
18、ds contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to in
19、vestigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 633:1986, Cork Vocabulary. ISO 2030:1990, Granulated cork Size analysis by mechanical sieving. ISO 2031:1991, Gra
20、nulated cork Determination of bulk density. ISO 2067:1988, Granulated cork Sampling. ISO 2190:1988, Granulated cork Determination of moisture content. 3 Definitions For the purposes of this International Standard, the definitions given in ISO 633 apply. 4 Classification Granulated cork and cork powd
21、er are classified according to the size of the granules and their bulk density. 4.1 Classification by grain size 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 1) , showing the granule size dist
22、ribution obtained. 4.2 Classification by bulk density Granulated cork tested as described in ISO 2031 is classified into six groups according to bulk density, as shown in Table 1. Table 1 Classification by bulk density 5 Designation Granulated cork and cork powder are designated by their granule siz
23、e (maximum and minimum) and their bulk density. EXAMPLE: Granulated 1/2 40/50 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, determined in accord
24、ance with ISO 2190, is under10 % (milled cork not included). NOTE 1Moisture content above this limit gives rise to adjustments in the mass of the bales. 6.4 Cork powder content The amount of cork powder in granulated cork in all the categories indicated (4.2) shall not exceed 0,5 %. 1) See ISO 565:1
25、990, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings. Classification Bulk density kg/m 3 40/50 50/60 60/80 80/100 100/120 120 40 120 ISO 1997:1992(E) 2 BSI 01-2000 7 Sampling See ISO 2067. 8 Packing Granulated cork and cork powder may be packed
26、in bales, sacks or cartons. If packed in bales, the granulated cork and cork powder 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 exceed 5 % of the total mass, and
27、 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 well as the name of the exporting country.blankBS ISO 1997:1992 BSI 389 Chiswick High Road London W4 4AL BSIBritishSta
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