1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12031 : 1997 The Eu
2、ropean Standard EN 12031 : 1996 has the status of a British Standard ICS 83.180 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Self-adhesive tapes Measurement of bursting strengthBS EN 12031 : 1997 This British Standard, having been prepared under the direction of the Consume
3、r Products and Services Sector Board, was published under the authority of the Standards Board and comes into effect on 15 February 1997 BSI 1997 The following BSI references relate to the work on this standard: Committee reference PKW/3 Draft for comment 92/43822 DC ISBN 0 580 26726 1 Amendments is
4、sued since publication Amd. No. Date Text affected Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PKW/3, Distribution packaging, transport packaging and unit loads, upon which the following bodies were represented: Briti
5、sh Adhesives and Sealants Association British Apparel and Textile Confederation British Coatings Federation Ltd. British Fibreboard Packaging Association British Glass Manufacturers Confederation British Industrial Truck Association British Plastics Federation British Retail Consortium British Rubbe
6、r Manufacturers Association Ltd. British Tensional Strapping Association Ltd. British Timber Merchants Association British Wood Preserving and Damp-proofing Association Chamber of Shipping Chemical Industries Association China Clay Association Cranfield Logistics Department of Transport Engineering
7、Equipment and Materials Users Association Federation of the Electronics Industry Flexible IBC Association Food and Drink Federation Independent Pallet Repair Committee Institute of Grocery Distribution Metal Packaging Manufacturers Association Ministry of Defence National Association of Pallet Distr
8、ibutors Power Fastenings Association Pira International Road Haulage Association Ltd. Society of Occupational Medicine Storage Equipment Manufacturers Association Timber Packaging and Pallet Confederation Timber Research and Development Association United Kingdom Softwood Sawmillers Association The
9、following bodies were also represented in the drafting of the standard, through subcommittees and panels: Adhesive Tape Manufacturers Association British Footwear Manufacturers Federation British Steel Industry (Wire Section) Packaging Distributors Association Pressure Sensitive Manufacturers Associ
10、ationBS EN 12031 : 1997 BSI 1997 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 12031 3ii BSI 1997 BS EN 12031 : 1997 National foreword This British Standard has been prepared by Technical Committee PKW/3 and is the English language version of EN
11、 12031 : 1996 Self-adhesive tapes Measurement of bursting strength, published by the European Committee for Standardization (CEN). Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cov
12、er, pages i and ii, the EN title page, pages 2 to 4, and inside back cover and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members
13、Ref. No. EN 12031 : 1996 E EUROPEAN STANDARD EN 12031 NORME EUROPE ENNE EUROPA ISCHE NORM May 1996 ICS 83.180 Descriptors: Adhesive tapes, tests, pressure tests, hydrostatic pressure, measurement, bursting strength English version Self-adhesive tapes Measurement of bursting strength Rubans auto-adhe
14、 sifs Mesure de la re sistance a le clatement Klebeba nder Messung des Berstwiderstandes This European Standard was approved by CEN on 1996-04-19. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of
15、a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version
16、 in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece
17、, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 12031 : 1996 BSI 1997 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 253, Self-adhesive tapes, the secretariat of which is held by AFNOR.
18、 This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 1996, and conflicting national standards shall be withdrawn at the latest by November 1996. According to the CEN/CENELEC Internal Regulati
19、ons, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Cont
20、ents Page Foreword 2 1 Scope 3 2 Normative reference 3 3 Definition 3 4 Principle 3 5 Apparatus 3 6 Test pieces 3 7 Procedure 3 8 Expression of results 3 9 Test report 4Page 3 EN 12031 : 1996 BSI 1997 1 Scope This standard specifies a method to measure the hydrostatic pressure required to burst an a
21、dhesive tape. 2 Normative reference This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments
22、 to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. ISO 2758 Paper Determination of bursting strength 3 Definition For the purposes of t
23、his standard, the following definition applies. bursting strength The ability of a tape to resist damage when force is applied perpendicularly to the surface of the tape. 4 Principle A test piece of adhesive tape is subjected to an evenly distributed pressure, usually exerted from below by means of
24、an elastic diaphragm, and the bursting pressure is measured. 5 Apparatus Bursting strength tester (Mullen type, or any type complying with ISO 2758), with the following main characteristics. 5.1 Clamping device To allow the test piece to be clamped between two ring-shaped surfaces, with a minimum ex
25、ternal diameter of 30 mm, in such a way that no slipping occurs during the test. Throughout the test, the upper clamping ring should remain almost concentric and parallel to the lower clamping ring. 5.2 Elastic diaphragm The elastic diaphragm is maintained between the lower clamping ring and the fra
26、mework of the equipment; initially the upper surface of the diaphragm should be at a distance of about 0,2 mm below the clamping plane, so that it is in contact with the test piece from the beginning of the test. The diaphragm should be capable of withstanding any working pressure likely to be encou
27、ntered, without permanent distortion. 5.3 Pressure generator This is formed by a device producing an increasing controlled hydraulic pressure under the elastic diaphragm. This pressure is produced by a piston forcing a liquid into a pressure chamber at a constant speed of 95 ml/min 10 ml/min (for au
28、tomatic equipment) or 120 revolutions per minute (for a manual system). A suitable device should enable the pressure generator to be stopped or its direction reversed, at the moment of bursting. A pressure indicator should be provided which records the maximum pressure reached and to record it even
29、after the pressure gauge has returned to zero. Pressure gauges shall be used for test pressures between 10 % and 75 % of the maximum of their calibrations. 6 Test pieces Condition the rolls for 24 h at 23 C 2C and 50 % 5 % relative humidity before testing. Discard the three outer turns of adhesive t
30、ape from each roll. Take from each roll five test pieces. The test pieces shall be taken from adhesive tapes with a width in excess of the external diameter of the ring-shaped surfaces. 7 Procedure 7.1 Standard test conditions: The tests shall be carried out at 23 C 2C and 50 % 5 % relative humidity
31、. 7.2 Zero the pressure gauge to be used. Place the test piece on the platen of the machine, adhesive side upwards, taking care to avoid any distortion of the test piece; then tighten it sufficiently to avoid slipping. Apply the pressure until the test piece bursts and record the pressure at the mom
32、ent of bursting. Disregard results where a clean break occurs at the edges of the test piece (through excessive clamping or rotation of the clamping rings). Repeat the test on five test pieces. 8 Expression of results The resistance to bursting shall be the average of the results obtained. Express r
33、esults in megapascals (MPa).Page 4 EN 12031 : 1996 BSI 1997 9 Test report The test report shall include the following information: a) a reference to this European Standard; b) all information necessary to identify the test sample; c) the dimensions of the diaphragm on the bursting machine used; d) t
34、he date of the test; e) the results obtained; f) any operation not specified in this European Standard which may influence the results.blankBSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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