1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12028 : 1997 The Eu
2、ropean Standard EN 12028 : 1996 has the status of a British Standard ICS 55.040; 83.180 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Self adhesive tapes Measurement of elongation under static loadBS EN 12028 : 1997 This British Standard, having been prepared under the direc
3、tion of the Consumer 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 92/42636 DC ISBN 0 580 26
4、800 4 Amendments issued 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
5、 represented: British 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 Conso
6、rtium British Rubber 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 Tra
7、nsport Engineering 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 Associat
8、ion of Pallet Distributors 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 Sawmille
9、rs Association The 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 M
10、anufacturers AssociationBS EN 12028 : 1997 BSI 1997 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 12028 3ii BSI 1997 BS EN 12028 : 1997 National foreword This British Standard has been prepared by Technical Committee PKW/3 and is the English lan
11、guage version of EN 12028 : 1996 Self adhesive tapes Measurement of elongation under static load, 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 fr
12、ont cover, an inside front cover, pages i and ii, pages 1 to 4, an 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 CE
13、N members Ref. No. EN 12028 : 1996 E EUROPEAN STANDARD EN 12028 NORME EUROPE ENNE EUROPA ISCHE NORM May 1996 ICS 83.180 Descriptors: Adhesive tapes, tension tests, measurement, elongation English version Self adhesive tapes Measurement of elongation under static load Rubans auto-adhe sifs Mesure de
14、lallongement sous charge statique Klebeba nder Messung der Dehnung unter statischer Belastung 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 statu
15、s of 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 ve
16、rsion 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, G
17、reece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 12028 : 1996 BSI 1997 Foreword This European Standard has been prepared by 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 Regulat
19、ions, 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. Con
20、tents Page Foreword 2 1 Scope 3 2 Principle 3 3 Apparatus 3 4 Test samples and test pieces 3 5 Procedure 3 6 Expression of results 3 7 Test report 3Page 3 EN 12028 : 1996 BSI 1997 1 Scope This standard specifies the method to measure the elongation of an adhesive tape under a low tension maintained
21、over a relatively short period. This method is intended to give an indication to the user of the elongation of an adhesive tape under tension in use. This test is particularly applicable to adhesive tapes based on highly stretchable backings. 2 Principle The adhesive tape is subjected to a relativel
22、y light load for a brief but definite period of time under standard test conditions. The elongation of the adhesive tape is then measured. 3 Apparatus 3.1 A rule, 1 m long, graduated in millimetres, suitably supported in a vertical position with the zero marking uppermost. 3.2 A holder fixed at the
23、zero end of the rule, enabling the adhesive tape to hang freely without touching the rule. 3.3 A second holder with suitable means for attaching mass, designed to avoid contact with the rule. 3.4 Appropriate mass to exert a force of 10 N/cm width of adhesive tape including the mass of the second hol
24、der and attachment. 3.5 Stop-watch or other timer. 4 Test samples and test pieces Condition the sample roll for 24 h at 23 C 2C and 50 % 5 % relative humidity. Discard the three outer turns of adhesive tape from the roll before taking test pieces. Take five test pieces 600 mm in length from the roll
25、. Remove the test pieces radially from the roll at approximately 300 mm/s. Then hang the test pieces vertically and condition for a further 2 h in the standard test conditions in order to remove all strain and distortion due to unwinding. 5 Procedure 5.1 Standard test conditions The test shall be ca
26、rried out at 23 C 2 C and 50 % 5 % relative humidity. 5.2 Fix the test piece to the two holders so that the distance between them is exactly 500 mm. 5.3 Place the assembly in the standard test conditions. 5.4 Add to the lower holder the appropriate mass for the width of adhesive tape, ensuring that
27、the adhesive tape and attachments are not touching the rule. Allow to hang freely. At the end of one minute precisely, measure the length of adhesive tape between the two holders. 6 Expression of results 6.1 Record the results as the percentage increase in length of the adhesive tape. 6.2 Arrange th
28、e five readings in ascending numerical order; take the median value as the result. 7 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 date of the test; d) the results obtain
29、ed; e) any operation not specified in this European Standard, which may influence the results.BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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