1、October 2014Translation by DIN-Sprachendienst.English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、 85.060!%;s)“2248006www.din.deDDIN EN ISO 2759Board Determination of bursting strength (ISO 2759:2014);English version EN ISO 2759:2014,English translation of DIN EN ISO 2759:2014-10Pappe Bestimmung der Berstfestigkeit (ISO 2759:2014);Englische Fassung EN ISO 2759:2014,Englische bersetzung von DIN E
3、N ISO 2759:2014-10Carton Dtermination de la rsistance lclatement (ISO 2759:2014);Version anglaise EN ISO 2759:2014,Traduction anglaise de DIN EN ISO 2759:2014-10SupersedesDIN EN ISO 2759:2003-11www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comp
4、rises 21 pages09.14 DIN EN ISO 2759:2014-10 2 A comma is used as the decimal marker. National foreword This document (EN ISO 2759:2014) has been prepared by Technical Committee ISO/TC 6 “Paper, board and pulps” in collaboration with Technical Committee CEN/TC 172 “Pulp, paper and board” (Secretariat
5、: DIN, Germany). This standard supersedes EN ISO 2759:2003. The responsible German body involved in its preparation was the DIN-Normenausschuss Papier, Pappe und Faserstoff (DIN Standards Committee Paper, Board and Pulps), Working Committee NA 074-02-03 AA Physikalisch-technische Prfverfahren fr Pap
6、ier und Pappe. The DIN Standards corresponding to the International Standards referred to in Clause 2 of this standard are as follows: ISO 186 DIN EN ISO 186 ISO 187 DIN EN ISO 187 ISO 536 DIN EN ISO 536 Users of this standard should take note of the following: During a routine review of the standar
7、d, ISO/TC 6 “Paper, board and pulp” determined that some minor editorial changes were necessary. A validation of the method and its results by means of precision data was also deemed desirable. For the sake of simplicity, the results of interlaboratory tests carried out and evaluated in 2012 by CEPI
8、 (Confederation of European Paper Industries) have been used as precision data (see Annex E). Because precision data are not normative specifications, and because all other changes made to this standard are solely editorial in nature, ISO/TC 6 had decided to make the fourth edition of ISO 2759 a “mi
9、nor revision”. Amendments This standard differs from DIN EN ISO 2759:2003-11 as follows: a) Annex E (informative) “Precision” has been added; b) the standard has been editorially revised. Previous editions DIN 53141: 1964-03 DIN 53141-1: 1974-01, 1977-07, 1979-04 DIN EN ISO 2759: 2003-11 DIN EN ISO
10、2759:2014-10 3 National Annex NA (informative) Bibliography DIN EN 20187, Paper, board and pulps Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples DIN EN ISO 186, Paper and board Sampling to determine average quality DIN EN ISO 5
11、36, Paper and board Determination of grammage DIN EN ISO 2759:2014-10 4 This page is intentionally blank EN ISO 2759July 2014 ICS 85.060 Supersedes EN ISO 2759:2003English Version Board - Determination of bursting strength (ISO 2759:2014) Carton - Dtermination de la rsistance lclatement(ISO 2759:201
12、4)Pappe - Best immung der Berstfestigkeit This European Standard was approved by CEN on 24 May 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up
13、-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by trans
14、lation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finlan
15、d, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. CEN-CENELEC Management Centre: Avenue M
16、arnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 2759:2014 EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEUROPEAN STANDARDNORME EUROPENNEEUROPIS
17、CHE NORM(ISO 275 9:2014)2DIN EN ISO 2759:2014-10 EN ISO 2759:2014 (E) Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references. 5 3 Terms and definitions 5 4 Principle 5 5 Apparatus 6 6 Calibration . 7 7 Sampling and preparation of test pieces . 7 8 Procedure 7 9 Expression of
18、results . 8 10 Test report . 8 Annex A (normative) Dimensions of the clamping system . 10 Annex B (normative) Testing the clamps 12 Annex C (normative) Clamping pressure 13 Annex D (normative) Calibration of pressure-measuring system 14 Annex E (informative) Precision . 15 Bibliography 17 ForewordTh
19、is document (EN ISO 2759:2014) has been prepared by Technical Committee ISO/TC 6 Paper, board and pulps in collaboration with Technical Committee CEN/TC 172 “Pulp, paper and board” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, eithe
20、r by publication of an identical text or by endorsement, at the latest by January 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/o
21、r CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 2759:2003. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,
22、 Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, S
23、witzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 2759:2014 has been approved by CEN as EN ISO 2759:2014 without any modification. “”3DIN EN ISO 2759:2014-10EN ISO 2759:2014 (E)IntroductionThis International Standard is applicable to boards with bursting strengths between
24、 350 kPa (or 250 kPa for the components of combined materials) and 5 500 kPa. All components of solid and corrugated fibreboard, irrespective of bursting strength, should be tested by this International Standard.For materials with bursting strengths less than 1 400 kPa, an alternative method, based
25、on similar principles, is specified in ISO 27581.NOTE Due to differences in the specification of the apparatus, tests made on the same material using the procedures of ISO 2758 and this International Standard will not necessarily give the same results.4DIN EN ISO 2759:2014-10 EN ISO 2759:2014 (E) 1
26、ScopeThis International Standard specifies a method for measuring the bursting strength of board submitted to increasing hydraulic pressure. It is applicable to all types of board (including corrugated and solid fibreboard) having bursting strengths within the range 350 kPa to 5 500 kPa. It is also
27、applicable to papers or boards having bursting strengths as low as 250 kPa if the paper or board is to be used to prepare a material of higher bursting strength, such as corrugated board. In such cases, the measurements will not necessarily have the accuracy or precision stated for this method and i
28、t is necessary to include a note in the test report stating that the test gave results that were below the minimum value required by the method.In the absence of any commercial agreement as to which method should be used for materials with bursting strengths between 350 kPa and 1 400 kPa, all materi
29、als with bursting strengths below 600 kPa, except components of solid and corrugated fibreboard, should be tested by ISO 2758 and the remainder by this International Standard.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indis
30、pensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 186, Paper and board Sampling to determine average qualityISO 187, Paper, board and pulps Standard atmosphe
31、re for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samplesISO 536, Paper and board Determination of grammage3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1bursting strengthmaximum pressure developed
32、by the hydraulic system in forcing an elastic diaphragm through a circular area of the board when the pressure is applied in the manner described in the methodNote 1 to entry: The indicated bursting pressure includes the pressure required to extend the diaphragm during the test.3.2burst indexburstin
33、g strength of the board divided by the grammage of the board determined in accordance with ISO 5364 PrincipleA test piece, placed over a circular elastic diaphragm, is rigidly clamped at the periphery but free to bulge with the diaphragm. Hydraulic fluid is pumped at a constant rate, bulging the dia
34、phragm until the test piece ruptures. The bursting strength of the test piece is the maximum value of the applied hydraulic pressure.5DIN EN ISO 2759:2014-10EN ISO 2759:2014 (E)5 ApparatusThe apparatus shall contain, as a minimum, the features described in 5.1 to 5.4.5.1 Clamping system, for clampin
35、g the test piece firmly and uniformly between two annular, plane, parallel surfaces which shall be smooth (but not polished) and grooved as described in Annex A, which also gives the dimensions of the clamping system.One clamping plate shall be held in a swivel joint or similar device so as to ensur
36、e that the clamping pressure is distributed evenly.Under the load used for testing, the circular openings in the two clamping plates shall be concentric to within 0,25 mm and the clamping surfaces shall be flat and parallel. The method of checking the clamps is given in Annex B.The clamping system s
37、hall be capable of applying a clamping pressure in the range 700 kPa to 1 200 kPa and shall be constructed in such a way that repeatable clamping pressures can be obtained in use (see Annex C).In calculating the clamping pressure, the reduction in area due to the grooves shall be ignored.Any clampin
38、g-pressure-indicating device fitted should preferably be scaled to indicate the actual clamping pressure, not the pressure in the clamping system itself. The clamping pressure may be calculated from clamping-force and clamp-area information.5.2 Diaphragm, circular, of natural or synthetic rubber, fr
39、ee from filler or loading, clamped securely with its outer surface, when at rest, recessed about 5,5 mm relative to the outer plane of the diaphragm-mounting plate.The material and construction of the diaphragm shall be such that the pressures required to bulge the diaphragm outside the outer plane
40、of the diaphragm plate are as follows: bulge height: 10 mm 0,2 mm, pressure range: 170 kPa to 220 kPa; bulge height: 18 mm 0,2 mm, pressure range: 250 kPa to 350 kPa.Diaphragms in use shall be regularly checked and changed if the bulge-height requirements are no longer met.5.3 Hydraulic system, to a
41、pply an increasing hydraulic pressure to the inside of the diaphragm until the test piece bursts.The pressure shall be generated by a motor-driven piston forcing a suitable liquid (e.g. pure glycerol, ethylene glycol containing corrosion inhibitor or low viscosity silicone oil) which is compatible w
42、ith the diaphragm material against the inner surface of the diaphragm. The hydraulic system and the fluid used shall be free from air bubbles. The pumping rate shall be 170 ml/min 15 ml/min.5.4 Pressure-measuring system, to measure bursting strength.It may employ any principle which produces a measu
43、rement and display accuracy equal to 10 kPa or 3 % of the measurement, whichever is the greater. The rate of response to the rising hydraulic pressure shall be such that the indicated maximum pressure is within 3 % of the true peak pressure as determined by a calibration system of the type described
44、 in Annex D.6DIN EN ISO 2759:2014-10 EN ISO 2759:2014 (E) 6 Calibration6.1 The apparatus should be fitted, or able to be fitted, with suitable test points to facilitate checking of the fluid pumping rate, calibration of the maximum pressure-measurement and display system and calibration of the clamp
45、ing pressure-indicating device where fitted.6.2 Calibration shall be carried out before initial use and at sufficiently frequent intervals to maintain the specified accuracy. Wherever possible, calibration of the pressure-sensing device should be carried out with it mounted in the same position it o
46、ccupies on the apparatus and preferably on the apparatus itself. If a pressure sensor is accidentally subjected to pressure beyond its rated capacity, it shall be recalibrated before further use.Aluminium foils of various thicknesses may be available for use as test pieces of known burst value. Such
47、 devices are a useful means of checking the overall function of an instrument but, since the behaviour of foil under stress is unlike that of paper, they should not be used as calibration standards.7 Sampling and preparation of test piecesThe sampling procedure is not covered by this International S
48、tandard. Make sure that the test pieces taken for the determination are representative of the sample received. If the determination is to represent a lot of board, the sampling procedure shall be carried out in accordance with ISO 186. Where possible, test pieces shall not include areas containing w
49、atermarks, creases or visible damage.Test pieces shall be conditioned in accordance with ISO 187.The number of test pieces required depends on whether or not separate results are required for burst tests carried out with each surface in contact with the diaphragm.8 ProcedureTests shall be carried out in the standard atmosphere, defined in ISO 187, used for the conditioning of test pieces in accordance with Clause 7.If required, determine the grammage
