BS-6225-2-1982 ISO-3783-1980.pdf
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1、BRITISH STANDARD BS 6225-2: 1982 ISO 3783:1980 Method for Determining the resistance to picking of paper and board: accelerating speed method using the IGT tester Part 2: Electric model ISO title: Paper and board Determination of resistance to picking Accelerating speed method using the IGT tester (
2、electric model) UDC 676.017.435.2:62 83 Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 15:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6225-2:1982 This British Standard, having been prepared under the direction of the Paper Standards Committee, was published under the authority of the
3、 Board of BSI and comes into effect on 26 February 1982 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference PAS/11 Draft for comment 75/61962 DC ISBN 0 580 12601 3 Cooperating organizations The Paper Standards Committee, under whose direction this Britis
4、h Standard was prepared, consists of representatives from the following: British Paper and Board Industry Federation (PIF)* British Printing Industries Federation* Envelope Makers and Manufacturing Stationers Association* HM Customs and Excise Her Majestys Stationery Office* Institute of Trading Sta
5、ndards Administration National Association of Paper Merchants National Economic Development Office Pira (The Research Association for the Paper and Board, Printing and Packaging Industries)* Royal Institute of Public Health and Hygiene The organizations marked with an asterisk in the above list, tog
6、ether with the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: British Fibreboard Packaging Association British Wood Pulp Association Chemical Industries Association Man-made Fibres Producers Committee Ministry of Defence Paper
7、 Sack Development Association Ltd. Post Office Society of British Printing Ink Manufacturers University of Manchester Institute of Science and Technology Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 15:28:15 GMT+00:00 2006,
8、Uncontrolled Copy, (c) BSI BS 6225-2:1982 BSI 11-1999i Contents Page Cooperating organizationsInside front cover National forewordii 0Introduction1 1Scope1 2Field of application1 3References1 4Definitions1 5Principle1 6Apparatus and materials1 7Sampling2 8Conditioning2 9Preparation of test pieces2 1
9、0Preparing the tester2 11Procedure3 12Determination of picking3 13Steps for subsequent tests3 14Test report4 15Bibliography4 Annex A Diagram of IGT printability tester (electric model) in common use5 Annex B 1977 version of IGT tester (electric model)6 Publications referred toInside back cover Licen
10、sed Copy: sheffieldun sheffieldun, na, Wed Dec 06 15:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6225-2:1982 ii BSI 11-1999 National foreword This Part 2 of this British Standard has been prepared under the direction of the Paper Standards Committee and is identical with ISO 3783:1980 “Paper
11、 and board Determination of resistance to picking Accelerating speed method using the IGT tester (Electric model)” published by the International Organization for Standardization (ISO). Part 1 of this standard is identical with ISO 3782:1980 “Paper and board Determination of resistance to picking Ac
12、celerating speed method using the IGT tester (Pendulum or spring model)”. Together these two Parts supersede BS 4885-2:1974 which is therefore withdrawn. Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard without de
13、viation. Some terminology and certain conventions are not identical with those used in British Standards; attention is especially drawn to the following. The comma has been used throughout as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the dec
14、imal marker. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard.” 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.
15、 Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross references International StandardCorresponding British Standard ISO 186:1977BS 3430:1980 Method for sampling for testing paper and board (Identical) ISO 187:1977BS 3431:1973 Method for the conditioni
16、ng of paper and board for testing (Technically equivalent) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated.
17、 This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 15:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6225-2:1982 BSI 11-19991 0 Introduction A number of methods for assessing the picking resistance of paper, i.e. the
18、ability of paper to withstand the forces involved in splitting of ink films in printing processes, have been developed and accepted in different countries. However, it has not been possible to achieve reproducibility between the results obtained by the different methods; nevertheless several of the
19、methods do rank particular papers in the same order and to this extent enable comparisons to be made. It is hoped that it will eventually be possible to achieve genuine reproducibility, but meanwhile it is considered necessary to provide internationally agreed guidance on the use of instruments that
20、 are employed in many countries. One of the most widely used pick testers is the IGT1) instrument. This International Standard deals with the electric model of that tester. ISO 3782 deals with other IGT instruments (pendulum or spring model), and the preparation of further methods is being considere
21、d. 1 Scope This International Standard specifies a method of operating the electric model of the IGT printability tester in order to provide a measure of the picking resistance of paper and board. 2 Field of application This International Standard applies to the testing of any kind of paper and boar
22、d likely to be used for printing, mainly by lithographic or letterpress processes. 3 References ISO 186, Paper and board Sampling for testing. ISO 187, Paper and board Conditioning of samples. 4 Definitions 4.1 picking the rupture of the surface of a paper or board during printing, which occurs when
23、 an external tensile force applied to the surface is greater than the cohesion of the paper or board NOTEIn the case of coated papers, the rupture may take the form of particles of coating or fibres wholly or partly detached from the sheet, “blistering” of the surface or gross stripping of the surfa
24、ce. In the case of board, “blistering” is called delamination and this is often reported separately from picking. In the case of uncoated papers the rupture normally takes the form of the removal of fibre aggregates. 4.2 picking velocity the velocity of printing at which the picking of the surface o
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