1、BSI Standards PublicationBS ISO 7322:2014Composition cork TestmethodsBS ISO 7322:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 7322:2014. Itsupersedes BS ISO 7322:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalC
2、ommittee PRI/81, Cork.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Pub
3、lished by BSI StandardsLimited 2014ISBN 978 0 580 82096 0ICS 79.100Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2014.Amendments issued since publicat
4、ionDate Text affectedBS ISO 7322:2014 ISO 2014Composition cork Test methodsAgglomr compos de lige Mthodes dessaiINTERNATIONAL STANDARDISO7322Third edition2014-10-15Reference numberISO 7322:2014(E)BS ISO 7322:2014ISO 7322:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All
5、rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested fro
6、m either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 7322:2014ISO 7322:2014(E) ISO 2014 All rights res
7、erved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Apparatus . 15 Sampling and preparation of test specimens . 25.1 Sampling . 25.2 Preparation of test specimen 25.3 Conditioning 26 Tests . 36.1 Thickness . 36.2 Apparent density . 36.3 Tensile strength 4
8、6.4 Compressibility and recovery 46.5 Resistance to boiling water 67 Test report . 6BS ISO 7322:2014ISO 7322:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standar
9、ds 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, governmental and non-governmental, in liaison with ISO, also take
10、 part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In part
11、icular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of t
12、his document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see ww
13、w.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to th
14、e WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 87, Cork.This third edition cancels and replaces the second edition (ISO 7322:2000). Minor editorial details have been introduced
15、 in this edition.iv ISO 2014 All rights reservedBS ISO 7322:2014INTERNATIONAL STANDARD ISO 7322:2014(E)Composition cork Test methods1 ScopeThis International Standard specifies test methods for the determination of the following characteristics of composition cork: thickness, apparent density, tensi
16、le strength, compressibility and recovery, resistance to boiling water.This International Standard is applicable to the product in sheet or roll form.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its applicat
17、ion. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-
18、by-lot inspection3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1composition corkproduct obtained from the agglutination of cork granules with the addition of a binder generally not derived from cork cells3.2rubbercorkproduct manufactured as a c
19、ompound of cork granules and rubber, which can be used either in the form of granules or as a binder4 Apparatus4.1 Static load press, with flat parallel plates of dimensions greater than those of the test specimens to be tested, one fixed and the other mobile to enable the load application at a cons
20、tant rate, and equipped with the following items.4.1.1 Cylindrical indentors, made of stainless steel having the following diameters: 28,7 mm, for testing composition cork, 12,8 mm, for testing rubbercork. ISO 2014 All rights reserved 1BS ISO 7322:2014ISO 7322:2014(E)4.1.2 Dial gauge, attached to th
21、e movable plate, capable of being read to the nearest 0,02 mm.4.1.3 Weights, for adjusting the applied load, having masses accurate to 1 %.4.2 Tensile testing machine, with one fixed jaw and one mobile jaw 12 mm apart (to test composition cork) or 50,8 mm apart (to test rubbercork), with readings ar
22、e accurate to 1 N.The mobile jaw shall move unloaded at a speed of 300 mm/min.4.3 Balance, with a resolution of 0,01 g.4.4 Oven or climatic room, with temperature and humidity controls.4.5 Vernier gauge, with a constant contact force, and a resolution of 0,1 mm.4.6 Metal ruler, with a resolution of
23、1 mm.4.7 Chronometer with a resolution of 1 s.4.8 Cutting system, to cut the test specimens.4.9 Open container, for water.5 Sampling and preparation of test specimens5.1 SamplingFrom each lot, the number of packages, at least three, and the quantity of material to be taken from the sample shall foll
24、ow ISO 2859-1 for the inspection level agreed between parties.5.2 Preparation of test specimenFrom each sheet of the material, cut the test specimens as indicated in Table 1, at least 100 mm away from the edges. Each test specimen shall be squarely cut with the edges perpendicular to its surface, sh
25、owing no cracks or folds.5.3 ConditioningTest specimens shall be conditioned for 48 h at 23 C. In case of dispute, the test specimens shall be conditioned at a temperature of (23 2) C and (50 5) % of relative humidity, for 48 h. Unless otherwise specified, the tests shall be carried out at the same
26、temperature and humidity conditions.2 ISO 2014 All rights reservedBS ISO 7322:2014ISO 7322:2014(E)Table 1 Dimensions and number of test specimensTest Dimensions of test specimens mmNumber of test specimens NotesThickness 100 50 5Apparent den-sity100 50 5 The test specimens for the thickness test may
27、 be used.Tensile strength100 50 3 If the composition cork was produced in rolls, take 3 test specimens in the direction of the compression plus 3 test specimens in the perpendicu-lar direction.Compressibility and recovery50 50 or circular with = 28,73 test specimens (in the case of single sampling)
28、or 3 groups of n test specimensResistance to boiling water50 50 36 Tests6.1 Thickness6.1.1 ProcedurePlace one test specimen on the fixed plate of the static press (4.1). Apply the indentor (4.1.1) without shock at the centre of the test specimen and apply the mass defined in Table 2, in accordance w
29、ith the type of composition cork concerned. After 15 s, read the thickness in the dial gauge (4.1.2).For test specimens with thicknesses greater than 10 mm, a Vernier gauge (4.5) shall be used.6.1.2 Calculation and expression of resultsThe thickness of the sample is the average of the results obtain
30、ed for each test specimen. Express the results in millimetres, rounded off to the nearest 0,1 mm.Table 2 Applied masses for the thickness measurementMaterial Diameter of the indentorMass Force Pressuremm g N kPacomposition cork 28,7 450 4,4 6,8rubbercork 12,8 450 4,4 34,36.2 Apparent density6.2.1 Pr
31、ocedureUse the Vernier gauge (4.5) or a metal ruler (4.6) to determine the length and the width of each test specimen, in millimetres, to the nearest 0,1 mm and record the values obtained. Determine the mass of each test specimen to the nearest 0,1 g and record the values obtained. ISO 2014 All righ
32、ts reserved 3BS ISO 7322:2014ISO 7322:2014(E)6.2.2 Calculation and expression of resultsThe apparent density of each test specimen, expressed in kilograms per cubic metre, is given by the Formula (1):mlbd106(1)wherem is the mass of the test specimen, expressed in gram, rounded to the nearest 0,1 g;l
33、 is the length of the test specimen, expressed in millimetres, rounded to the nearest integer;b is the width of the test specimen, expressed in millimetres, rounded to the nearest integer;d is the thickness of the test specimen, obtained from 6.1, expressed in millimetres, rounded to the nearest 0,1
34、 mm.The apparent density of the sample is the average of the results obtained for each test specimen rounded off to the nearest integer.6.3 Tensile strength6.3.1 ProcedureClamp one test specimen in the machine jaws so that the force is exerted on the length of the test specimen. Set the machine in o
35、peration and record the force (F) at which rupture occurs.Any test specimen for which rupture occurs at the jaw level shall be eliminated and replaced by a new test specimen.6.3.2 Calculation and expression of resultsThe tensile strength of each test specimen, expressed in kilopascals, is given by F
36、ormula (2):Fbd103(2)whereF is the force at which rupture occurs, expressed in newtons, rounded to the nearest integer;b is the width of the test specimen, expressed in millimetres, rounded to the nearest integer;d is the thickness of the test specimen, expressed in millimetres, rounded to the neares
37、t 0,1 mm.The tensile strength of the sample is the average of the results obtained for each test specimen rounded to the nearest integer.6.4 Compressibility and recovery6.4.1 ProcedureThe dimensions of test specimens are specified in Table 1.Test specimens shall consist in a single ply or a number o
38、f superimposed plies to give a minimum test thickness of 3,2 mm.4 ISO 2014 All rights reservedBS ISO 7322:2014ISO 7322:2014(E)Determine the deflection of the indentor for each load specified in Table 3 without any test specimen. Subtract any measurable value occurring on the static press from the th
39、ickness under total load. This value shall be subtracted from the readings with the test specimen.NOTE The deflection in the testing apparatus can also be compensated by setting the dial gauge on the negative side of zero at a reading equal to the deflection.Table 3 Applied loads and corresponding p
40、ressuresType of material Diameter of the indentorPreload Major load Total load Total pressuremm N N N kPacomposition cork28,7 4,5 440 445 700composition cork with cel-lular rubber28,7 4,5 440 445 700rubbercork 12,8 4,5 351 355 2750Centre the test specimen on the base of the press (4.1) and apply the
41、 preload; maintain this load for 15 s. Record the reading (d1) in the dial gauge under the action of the preload.Immediately and without shock, apply the major load so that the total load is reached in 10 s; maintain the total load for 60 s and record the thickness of the test specimen (d2) in the d
42、ial gauge. Immediately remove the major load. After 60 s read the new thickness (d3) under the preload.6.4.2 Calculation and expression of resultsThe compressibility of each test specimen, expressed in percentage, is given by Formula (3):ddd121100 (3)The recovery of each test specimen, expressed in
43、percentage, is given by Formula (4):dddd3212100 (4)whered1is the reading in the dial gauge, for each test specimen under the preload, expressed in mil-limetres, rounded to the nearest 0,1 mm;d2is the reading in the dial gauge, for each test specimen under total load, expressed in millime-tres, round
44、ed to the nearest 0,1 mm;d3is the reading in the dial gauge, for each test specimen after the recovery and under the preload, expressed in millimetres, rounded to the nearest 0,1 mm.The test result is the average of the results obtained for each test specimen, expressed in percentage rounded to the
45、nearest integer. ISO 2014 All rights reserved 5BS ISO 7322:2014ISO 7322:2014(E)6.5 Resistance to boiling water6.5.1 ProcedureBoil the water in a container (4.9). Place the test specimens and keep the water boiling for 3 h. Remove the test specimens and make their visual examination.6.5.2 Expression
46、of resultExpress the test results by stating the existence or absence of disaggregation1)of the sample.7 Test reportThe test report shall include the following information:a) reference to this International Standard, i.e. ISO 7322;b) the complete identification of the product tested, including the t
47、ype, source and the manufacturers references;c) sampling report;d) results obtained;e) any deviation from this International Standard that may have affected the results.1) A test specimen is said to disaggregate if it splits open and/or if it shows substantial loss of particles during the test.6 ISO
48、 2014 All rights reservedBS ISO 7322:2014BS ISO 7322:2014ISO 7322:2014(E) ISO 2014 All rights reservedICS 79.100Price based on 6 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and servic
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