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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1941 : 1996 The Eur
2、opean Standard EN 1941 : 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 elongation at break Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:29:37 GMT+00:00 2006, Uncontrolled Cop
3、y, (c) BSI This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Board, was published under the authority of the Standards Board and comes into effect on 15 October 1996 BSI 1996 The following BSI references relate to the work on this standard:
4、Committee reference PKW/3 Draft for comment 92/42644 DC ISBN 0 580 26228 6 BS EN 1941 : 1996 Amendments issued since publication Amd. No.DateText affected Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PKW/3, Distributio
5、n packaging, transport, packaging and unit loads, upon which the following bodies were represented: British Adhesives and Sealants Association British Apparel and Textile Confederation British Carton Association British Coatings Federation Ltd. British Fibreboard Packaging Association British Glass
6、Manufacturers Confederation British Industrial Truck Association British Plastics Federation British Retail Consortium British Rubber Manufacturers Association Ltd. British Tensional Strapping Association Ltd. British Timber Merchants Association British Wood Preserving and Damp-proofing Association
7、 Chamber of Shipping Chemical Industries Association China Clay Association Cranfield Logistics Department of Transport Engineering Equipment and Materials Users Association Federation of the Electronics Industry Flexible IBC Association Food and Drink Federation Independent Pallet Repair Committee
8、Institute of Grocery Distribution Metal Packaging Manufacturers Association Ministry of Defence National Association of Pallet Distributors Power Fastenings Association Pira International Road Haulage Association Ltd. Society of Motor Manufacturers and Traders Ltd. Storage Equipment Manufacturers As
9、sociation Timber Packaging and Pallet Confederation Timber Research and Development Association United Kingdom Softwood Sawmillers Association The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Adhesive Tape Manufacturers Association British
10、 Footwear Manufacturers Federation British Steel Industry (Wire Section) Packaging Distributors Association Pressure Sensitive Manufacturers Association Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:29:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 1941 : 1996 BSI 1996i Contents Pag
11、e Committees responsibleInside front cover National forewordii Foreword2 Text of EN 19413 Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:29:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii BSI 1996 BS EN 1941 : 1996 National foreword This British Standard has been prepared by Technical Co
12、mmittee PKW/3 and is the English language version of EN 1941 : 1996 Self adhesive tapes Measurement of elongation at break published by the European Committee for Standardization (CEN). Compliance with a British Standard does not of itself confer immunity from legal obligations. Licensed Copy: sheff
13、ieldun sheffieldun, na, Mon Oct 30 05:29:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 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 All rights of reproduction and communic
14、ation in any form and by any means reserved in all countries to CEN and its members. Ref. No. EN 1941 : 1996 E EUROPEAN STANDARDEN 1941 NORME EUROPE ENNE EUROPA ISCHE NORM February 1996 ICS 83.180 Descriptors: Adhesive tapes, tension tapes, elongation at break English version Self adhesive tapes Mea
15、surement of elongation at break Rubans auto-adhe sifs Mesure de lallongement a la rupture Klebeba nder Messung der Reibdehnung This European Standard was approved by CEN on 1996-01-14. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving
16、 this European Standard the status 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 version
17、s (English, French, German). A version 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, Den
18、mark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:29:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 1941 : 1996 BSI 1996 Forewor
19、d This European Standard has been prepared by Technical Committee CEN/TC 253, Self adhesive tapes, of which the secretariat is held by AFNOR. 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 August
20、 1996, and conflicting national standards shall be withdrawn at the latest by August 1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, L
21、uxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Definition3 3Principle3 4Apparatus3 5Test sample and test pieces3 6Procedure3 7Expression of results3 8Test report3 Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:
22、29:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 1941 : 1996 BSI 1996 1 Scope This standard specifies a method to measure the elongation of a self adhesive tape when it is subjected to a tensile force sufficient to cause it to break. The elongation at break of the adhesive tape is of value
23、 as an indication of its uniformity and quality, as well as a rough indication of its ability to conform to curved and irregular surfaces. It is usually determined at the same time as the breaking strength. The maximum width of adhesive tape tested by this method is 25 mm. For adhesive tapes of this
24、 width or less, the elongation at break measured corresponds to that as supplied commercially, with factory-cut edges. For adhesive tapes wider than 25 mm, this test method provides for the tape to be cut down to 25 mm with a well-sharpened instrument. In such cases, because of the better cutting of
25、 the edges, the results can be higher than would be found on commercial adhesive tape. 2 Definition For the purposes of this standard, the following definition applies: elongation at break The increase in length of the adhesive tape at the time of breaking as a percentage of the original length. 3 P
26、rinciple The method consists of holding the adhesive tape vertically by the two clamps of a tensile testing machine. The elongation test is carried out until the adhesive tape breaks. 4 Apparatus Tensile testing machine, with the following characteristics: the force shall be indicated with a maximum
27、 error of 2 %; the speed of the moveable clamp shall be 300 mm/min30 mm/min; the scale shall be such that the readings obtained are between 15 % and 85 % of the complete scale; the clamps shall be serrated to prevent slipping or tearing of the adhesive tape; if a pendulum machine is used, ensure tha
28、t the pendulum can swing freely. 5 Test sample and test pieces Condition the sample roll for 24 hours at 23 C2 C and 50 %5 % relative humidity. Discard the 3 outer turns of adhesive tape from the roll. Take from each roll 5 test pieces. Each test piece shall be 200 mm long and the same width as the
29、adhesive tape. For widths greater than 25 mm, a test piece 25 mm wide shall be cut longitudinally from the adhesive tape. Use a sharp knife to obtain clean-cut edges. 6 Procedure 6.1 The test shall be carried out at the standard conditions of 23 C2 C and 50 %5 % relative humidity. 6.2 Remove the tes
30、t pieces radially from the roll at an approximate speed of 300 mm/s, then condition for a further 2 h in the standard test conditions in order to remove all strain and distortion due to unwinding. 6.3 Set the clamps 100 mm apart. Clamp the test piece firmly so that the longitudinal axis is vertical
31、and in line with the direction of the applied force. Check that the clamps move in the same plane and parallel to the applied force and that the speed of separation is 300 mm/min30 mm/min. Reject all test pieces which break within 5 mm of the clamps and carry out sufficient further tests to obtain 5
32、 test pieces which break in the correct manner. Measure the distance between the clamps at break. 7 Expression of results Record the results as the percentage increase in the length of adhesive tape between the clamps when the adhesive tape breaks. Express the results as a percentage to the nearest
33、whole number. Arrange the five readings in ascending numerical order. Take the central value (median) as the elongation at break of the adhesive tape under test. Because the results obtained with different tensile testing machines (pendulum or electronic) may not be directly comparable, the type of
34、machine used shall be included in the test report. 8 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 type of tensile testing machine used; d) the date of the test; e) the r
35、esult obtained; f) any operation not specified in this European Standard which can influence the results. Licensed Copy: sheffieldun sheffieldun, na, Mon Oct 30 05:29:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | |
36、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for prepa
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