1、BS ISO 16260:2016Paper and board Determination of internal bondstrengthBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 16260:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 16260:2016.The UK participation in its prep
2、aration 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 publication does not purport to include all the necessaryprovisions of a contract. Users are responsibl
3、e for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 72063 5ICS 85.060Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy a
4、nd Strategy Committee on 30 June 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 16260:2016 ISO 2015Paper and board Determination of internal bond strengthPapier et carton Dtermination de la force de cohsion interneINTERNATIONAL STANDARDISO16260First edition2015
5、-06-01Reference numberISO 16260:2015(E)BS ISO 16260:2016ISO 16260:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or b
6、y any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP
7、401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 16260:2016ISO 16260:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Apparatus . 26 Sampling 37 Conditioning 38 Preparation of
8、 test pieces . 49 Calibration 410 Procedure. 411 Expression of results 512 Test report . 5Annex A (normative) Maintenance and calibration . 6Annex B (informative) Precision . 8Annex C (informative) Instrument/Pendulum ranges and measurement of impact energies .10Bibliography .14 ISO 2015 All rights
9、reserved iiiContents PageBS ISO 16260:2016ISO 16260:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committe
10、es. 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 part in the work. ISO collaborates closely with the Inte
11、rnational 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 particular the different approval criteria needed for the dif
12、ferent 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 this document may be the subject of patent rights. ISO sha
13、ll 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 www.iso.org/patents).Any trade name used in this document i
14、s 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 the WTO principles in the Technical Barriers to Trade (TBT)
15、, see the following URL: Foreword Supplementary information .The committee responsible for this document is ISO/TC 6, Paper, board and pulps, Subcommittee SC 2, Test methods and quality specifications for paper and board.iv ISO 2015 All rights reservedBS ISO 16260:2016ISO 16260:2015(E)IntroductionPa
16、per and board sheets may, during printing, conversion, or specific product applications, be subjected to impulses, impacts, or shock loads of sufficient magnitude to cause structural failure of the sheet. Commonly observed in-plane structural failures include surface picking, blistering, and interio
17、r delimitation.This International Standard describes one method for determining the internal bond strength of a sheet of paper or board. There are other published methods2,4for determining “Z” or thickness direction tensile strength but in this method, the delaminating force is applied at a rate ver
18、y much higher than in other methods. This method may, therefore, be preferred for predicting sheet performance under printing or converting conditions. ISO 2015 All rights reserved vBS ISO 16260:2016BS ISO 16260:2016Paper and board Determination of internal bond strength1 ScopeThis International Sta
19、ndard describes a method to measure the energy required to rapidly delaminate a test piece of paper or board. Rupture of the test piece in the “Z” or thickness direction is initiated by a pendulum having a defined mass, moving at a defined velocity.The procedure is suitable for both single- and mult
20、i-ply papers and boards, including coated sheets and those that are laminated with synthetic polymer films. It is particularly suitable for papers and boards that may be subjected to Z-direction2,5rapid impacts, impulses, or shock loads during printing or conversion.The test procedure entails the ad
21、herence of double-sided adhesive tape to both sides of the test piece under pressure. For this reason, the method may be unsuitable for materials that might be structurally damaged by compression or are porous enough to permit migration of the tape adhesive into or through the test piece.2 Normative
22、 referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appli
23、es.ISO 186, Paper 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 samplesASTM D3330/D3330M-04(2010), Standard Test Method for Peel Adhesion of Pressure-Sen
24、sitive Tape3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1internal bond strengthaverage energy, expressed as Joules per square metre of surface, required to delaminate a test piece under the conditions of the test3.2test assemblytest piece, mou
25、nted ready for the testNote 1 to entry: The test assembly consists of the test piece, laminated between two pieces of double-sided adhesive tape, with the bottom side of the lower tape layer adhered to a rigid metal anvil and the upper side of the upper tape layer adhered to an “L”-shaped aluminium
26、platen.4 PrincipleA square test piece is adhered to a flat metal anvil by means of double sided adhesive tape. An “L”-shaped aluminium platen with the same surface area as the test piece is then adhered to the upper surface of the test piece, again using double sided adhesive tape. The assembly is s
27、hown in Figure 1. The assembly is secured in position and a pendulum allowed to impact the upper inside surface of the platen, causing it to rotate about its outside corner, splitting the test piece in the “Z” or thickness direction (Figure 2) INTERNATIONAL STANDARD ISO 16260:2015(E) ISO 2015 All ri
28、ghts reserved 1BS ISO 16260:2016ISO 16260:2015(E)The energy absorbed in rupturing the test piece is calculated from the measurement of the subsequent over-swing of the pendulum and the known masses and dimensions of the system components.4132Key1 test piece2 double sided adhesive tape3 aluminium pla
29、ten4 metal anvilFigure 1 Components of a test assembly1Key1 pendulum strike point and directionFigure 2 Pendulum to anvil strike point5 Apparatus5.1 A device for the pressing of the test assembly of dimensions 25,4 mm 0,1 mm 25,4 0,1 mm for testing by pressing the components of the test assembly tog
30、ether at a controlled pressure for a controlled time. Any device employed to apply pressure should be capable of doing so in the range of 345 kPa to 1 034 kPa and for a period of at least 3 s. During the pressure cycle, the aluminium platen (5.5) should be securely clamped in position to prevent fle
31、xing.NOTE Most commercially available preparation stations are capable of simultaneously preparing five test assemblies.5.2 Ensure that the test instrument is levelled in the frontback and leftright directions and the pendulum is horizontal when in the latched position.5.3 A pendulum, mounted on a p
32、edestal by means of a horizontal spindle supported on low-friction bearings, whose centre of mass lies on the centreline of the pendulum shaft at a point 127 mm 0,6 mm from the centreline of the spindle. The pendulum shall be free to rotate from a horizontal position through at least 180 degrees. At
33、 its free end, the pendulum carries a metal striker ball which contacts the inside face of the aluminium angle on the test assembly when the pendulum reaches the vertical position. To 2 ISO 2015 All rights reservedBS ISO 16260:2016ISO 16260:2015(E)minimize energy losses due to vibration, the centre
34、of gravity of the pendulum should be at the point of impact of the striker ball with the aluminium angle. There should be no looseness in the construction of pendulums that have augmented weight assemblies.5.4 A means for securing the pendulum in a horizontal position with provision for a rapid, vib
35、ration-free release.5.5 The test assembly is formed from a stationary anvil (base) and a separable aluminium angle (platen) that is a right angle in cross section together with the test piece and adhesive tape. See Figure 1.Anvils intended for use in multiple test piece preparation stations should b
36、e indelibly marked to ensure that they are always placed in the same position in the preparation station. The test assembly is securely held in position so that the pendulum strikes the centre of percussion of the aluminium platen when the axis of rotation is at the outside corner of the right angle
37、 of the platen. See Figure 2.5.6 A means of registering the peak angular swing of the pendulum after impact with the test assembly.5.7 A means to convert the peak angular swing of the pendulum to an internal bond strength value. Commonly employed methods include optical encoder/digital computers and
38、 mechanical scale/friction pointer. The minimum range of the instrument shall be 0 Joules/m2 525 Joules/m2.5.8 An optional means to extend the range of the instrument. This may be achieved by fitting pendulums of different masses, or by adding augmenting weights to the pendulum, or reducing the surf
39、ace area of the test piece by an amount not exceeding 50 %. The user of this International Standard should consult the manufacturer of the test instrument regarding the installation and verification of such options. Any such modifications to the instrument must be included in the test report.5.9 A d
40、evice suitable for cutting strips of the test material 25,4 mm 0,1 mm wide and of sufficient length to mount in the test assembly preparation device.5.10 A knife or multi-blade cutting device for separating test assemblies prepared in multi-station test assembly preparation devices.5.11 Double-sided
41、 adhesive paper tape 25,4 mm 0,08 mm wide with a creped release liner. The tape should have a nominal thickness of 0,15 mm and should exhibit a minimum adhesion to steel of 56 N/100 mm when measured in accordance with ASTM D3330/D3330M-04.NOTE A suitable tape is 3MTMDouble Coated Paper Tape 410M1).5
42、.12 A supply of solvent suitable for removing adhesive residue from the anvils and platens.6 SamplingIf tests are being made to evaluate a lot, the sample shall be selected in accordance with ISO 186. If the tests are made on another type of sample, make sure that the specimens taken are representat
43、ive of the sample received.7 ConditioningConditioning shall be carried out in accordance with ISO 187.1) 3MTMDouble Coated Paper Tape 410M is an example of a suitable product available commercially. This information is given for the convenience of users of this International Standard and does not co
44、nstitute an endorsement by ISO of this product. ISO 2015 All rights reserved 3BS ISO 16260:2016ISO 16260:2015(E)8 Preparation of test pieces8.1 From each test specimen, cut strips 25,4 mm 0,1 mm wide of sufficient length to fit the preparation device in use.NOTE Commercially available preparation st
45、ations typically require strips 140 mm 178 mm long.Handle the strips by the extreme ends only and discard any that exhibit creases, wrinkles, or other abnormalities.8.2 Load the preparation station with adhesive tape, test strip, anvils, and platens in accordance with the manufacturers instructions,
46、 ensuring that the anvils and platens are free from adhesive and fibre residue from previous tests.8.3 Operate the preparation station so as to apply a pressure of 690 kPa 20 kPa to each test assembly for a period of 3 s.8.4 Use a knife or inbuilt cutting device to separate the individual test assem
47、blies. If necessary, trim the edges of the test piece/tape sandwich to remove any overlap.9 CalibrationCalibrate the preparation station and the test instrument at required intervals in accordance with the manufacturers instructions and/or the procedures given in Annex A.10 Procedure10.1 Carry out t
48、he tests under the same atmospheric conditions as those used to condition the test pieces.10.2 Latch the pendulum in the horizontal position. On instruments with mechanical indication, ensure that the pointer is swung in a direction opposite to that of the swing of the pendulum at the time of impact
49、 until it comes to rest against the pendulum latch pin.10.3 Take the first test assembly, consisting of an anvil, test piece/tape sandwich, and aluminium platen, and place it in position in the pendulum strike zone. Secure the test assembly firmly in position using the fixtures provided.10.4 Operate the pendulum release mechanism and allow the pendulum to strike the aluminium platen, rupturing the test piece. If possible, capture the platen to prevent damage to it by contact with hard objects.10.5 Examine both
