1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 12625-11:2012Tissue paper and tissueproductsPart 11: Determination of wet ball burststrength (ISO 12625-11:2012)BS EN ISO 12625-11:2012 BRITISH STANDARDNational forewor
2、dThis British Standard is the UK implementation of EN ISO12625-11:2012.The UK participation in its preparation was entrusted to TechnicalCommittee PAI/11, Methods of test for paper, board and pulps.A list of organizations represented on this committee can beobtained on request to its secretary.This
3、publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 75556 9ICS 85.060Compliance with a British Standard cannot confer immunity
4、 fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12625-11 December 2012 ICS 85.060 English Vers
5、ion Tissue paper and tissue products - Part 11: Determination of wet ball burst strength (ISO 12625-11:2012) Papier tissue et produits tissues - Partie 11: Dtermination de la rsistance lclatement ltat humide, mthode la balle (ISO 12625-11:2012) Tissue-Papier und Tissue-Produkte - Teil 11: Bestimmung
6、 der Nass-Berstfestigkeit mit einem Durchstokrper (ISO 12625-11:2012) This European Standard was approved by CEN on 18 December 2012. 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 st
7、andard without any alteration. Up-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
8、 any other language made by translation 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 R
9、epublic, 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, Switzerland, Turkey and United Kingdom. EUROP
10、EAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12625-11:2012: EBS EN ISO
11、 12625-11:2012EN ISO 12625-11:2012 (E) 3 Foreword This document (EN ISO 12625-11:2012) has been prepared by Technical Committee CEN/TC 172 “Pulp, paper and board“, the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 6 “Paper, board and pulps“. This European Stan
12、dard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2013, and conflicting national standards shall be withdrawn at the latest by June 2013. Attention is drawn to the possibility that some of the elements of this d
13、ocument may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standar
14、d: Austria, 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
15、, Sweden, Switzerland, Turkey and the United Kingdom. BS EN ISO 12625-11:2012ISO 12625-11:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Reagents 26 Apparatus . 26.1 General . 26.2 Clamping sy
16、stem . 26.3 Penetration system 36.4 Force measuring system . 36.5 Drive mechanism 46.6 Water application system 47 Sampling 48 Conditioning 48.1 General . 48.2 Rapid ageing (curing) 49 Preparation of test pieces . 59.1 General . 59.2 Preparation of test pieces 510 Procedure. 511 Calculation 512 Test
17、 report . 6Annex A (informative) Precision . 7Annex B (informative) Adaptor 8Bibliography 9BS EN ISO 12625-11:2012ISO 12625-11:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Int
18、ernational 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. International organizations, governmental and non-governmental, in liaison w
19、ith ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technica
20、l committees is to prepare International Standards. Draft International Standards adopted by the technical 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.Attention is drawn to
21、the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 12625-11 was prepared by Technical Committee ISO/TC 6, Paper, board and pulps, Subcommittee SC 2, Test methods and quali
22、ty specifications for paper and board.ISO 12625-11 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 172, Pulp, paper and board, in collaboration with Technical Committee ISO/TC 6, Paper, board and pulps, Subcommittee SC 2, Test methods for quality specifica
23、tions for paper and board, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).ISO 12625 consists of the following parts, under the general title Tissue paper and tissue products: Part 1: General guidance on terms; Part 3: Determination of thickness, bulk
24、ing thickness and apparent bulk density; Part 4: Determination of tensile strength, stretch at break and tensile energy absorption; Part 5: Determination of wet tensile strength; Part 6: Determination of grammage; Part 7: Determination of optical properties Measurement of brightness and colour; Part
25、 8: Water-absorption time and water-absorption capacity; basket-immersion test method; Part 9: Determination of ball burst strength; Part 11: Determination of wet ball burst strength; Part 12: Determination of tensile strength of perforated lines Calculation of perforation efficiency.iv ISO 2012 All
26、 rights reservedBS EN ISO 12625-11:2012ISO 12625-11:2012(E)IntroductionThis part of ISO 12625 is applicable to tissue papers and tissue products. In principle, application to other types of paper is possible, but is not covered by this part of ISO 12625. ISO 2012 All rights reserved vBS EN ISO 12625
27、-11:2012BS EN ISO 12625-11:2012Tissue paper and tissue products Part 11: Determination of wet ball burst strength1 ScopeThis part of ISO 12625 specifies a test method for the determination of the resistance to mechanical penetration (ball burst strength procedure) of tissue paper and tissue products
28、 after wetting.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 186, Pape
29、r and board Sampling to determine average qualityISO 187, Paper, board and pulps Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samplesISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/com
30、pression testing machines Verification and calibration of the force-measuring systemISO 12625-1, Tissue paper and tissue products Part 1: General guidance on termsISO 12625-9:2005, Tissue paper and tissue products Part 9: Determination of ball burst strength3 Terms and definitionsFor the purposes of
31、 this document, the terms and definitions given in ISO 12625-1 and the following apply.3.1bursting forceFDmaximum force, that a test piece of a tissue paper or tissue product can withstand under the test conditions, applied at a 90 angle to its surfaceISO 12625-9:2005NOTE 1 The bursting force is exp
32、ressed in millinewtons (mN).NOTE 2 ISO 12625-9:2005 measures the bursting force of the test piece in the dry condition and uses an inner clamping diameter of 89 mm. At the next revision it is intended to change this inner diameter to 50 mm.3.2wet bursting forceFWmaximum force, that a wetted test pie
33、ce of a tissue paper or tissue product can withstand under the test conditions, applied at a 90 angle to its surfaceNOTE The wet bursting force is expressed in millinewtons (mN).INTERNATIONAL STANDARD ISO 12625-11:2012(E) ISO 2012 All rights reserved 1BS EN ISO 12625-11:2012ISO 12625-11:2012(E)3.3we
34、t burst indexXWwet bursting force of the tissue paper or tissue product divided by the grammage of the conditioned sample determined by the standard method of testNOTE The wet burst index is expressed in millinewton square metre per gram (mN m2/g).3.4wet burst retentionWRratio, expressed as a percen
35、tage, of the burst strength of the wet tissue paper or wet tissue product to the burst strength of the same tissue paper or tissue product in the dry and conditioned stateNOTE This definition is similar to the definition of wet tensile strength retention; see ISO 12625-5:2005.4 PrincipleA test piece
36、 of tissue paper or tissue product is rigidly clamped at the periphery between two concentric annular rings, then wetted with deionized water and submitted to a perpendicular force until penetration, applied by a ball of a hard, non-deformable, material moving at a constant speed.5 Reagents5.1 Deion
37、ized water, with a conductivity 0,25 mS/m at 25C, in accordance with ISO 14487. The water temperature should be maintained during the test at the temperature used for conditioning and testing.6 Apparatus6.1 GeneralThe apparatus shall be placed on a horizontal surface, free from externally induced vi
38、brations.6.2 Clamping systemThe clamping system is designed to clamp the test piece firmly and uniformly between two concentric annular plane, parallel surfaces. The clamping rings can be activated mechanically or pneumatically.The clamping pressure shall be sufficient to prevent slippage during the
39、 test, without damaging the test pieces.The clamping surfaces of the clamping rings are coated with a commercial grade of a band made of rubber material, typically 1,0 mm to 2,0 mm thick, having an IRHD hardness (International Rubber Hardness Degree) of 70 IRHD to 85 IRHD. The inner edges of the coa
40、ted band shall be coincident with the inner diameter of the clamping rings and be at least 12,5 mm wide. The internal diameter of the two concentric rings shall be (50,0 0,2) mm. For an example of a pneumatic clamping system, see Figure 1.2 ISO 2012 All rights reservedBS EN ISO 12625-11:2012ISO 1262
41、5-11:2012(E)Legend1 load cell2 travel3 stationary ring4 suitable band made of rubber (e. g. chloroprene rubber)5 movable centre-ring6 pneumatic cylinder7 probeaPolished ball.Figure 1 Principle of the clamping system, pneumatic fixture6.3 Penetration systemThe penetration (burst) system shall consist
42、 of a spherical ball attached to a rod designed to transmit the force applied to the ball. The penetration ball shall be made of highly polished stainless steel and shall have the following dimensions: diameter: (16 0,2 mm); sphericity: better than 1 m.The penetration ball shall be centred with the
43、annular clamps. It is permanently attached to the end of a solid hard rod designed to transmit the force applied to the ball.6.4 Force measuring systemThe force measuring system shall measure the loads with a class of machine range of 1 or better and shall be calibrated and verified in accordance wi
44、th the requirements of ISO 7500-1.The load cell system shall have a measuring range of 0,1 N to 15 N.The readout system shall have a display that shows the maximum force at burst. ISO 2012 All rights reserved 3BS EN ISO 12625-11:2012ISO 12625-11:2012(E)6.5 Drive mechanismThe drive mechanism shall co
45、nsist of a static uniaxial testing machine with a suitable mechanism for moving either the clamping system or the penetration system so that they approach each other at a constant rate in a direction perpendicular to the clamping system plane.The penetration test speed shall be (125 5) mm/min.6.6 Wa
46、ter application systemA water application system shall be either a pipette or any automatic volumetric water application system like dosimat 1)with a volume accuracy of (5,0 0,1) ml and capable of delivering 5 ml water within 3 s to 4 s.7 SamplingIf the tests are being made to evaluate a lot, the sa
47、mple shall be selected in accordance with ISO 186.If the tests are being made on another type of sample, make sure that the specimens taken are representative of the sample.When sampling finished roll products, possible presence of adhesives or mechanical damage shall be avoided. Therefore, exclude
48、at least the first and the last six windings of the roll.8 Conditioning8.1 GeneralCondition the samples according to ISO 187, unless otherwise agreed between the parties concerned, and keep them in the standard atmosphere throughout the test.8.2 Rapid ageing (curing)The wet strength of tissue paper
49、is frequently enhanced by addition of a wet strength agent. A rapid ageing with heat is frequently used to develop the maximum wet strength that a tissue paper or tissue product will achieve after a period of natural ageing at ambient conditions which may vary from a few days to several weeks, depending on the wet strength agent used.NOTE The decision on whether or not to use rapid ageing will be determined by the user of this part of ISO 12625, based upon the information about the tissue paper or
