1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12030 : 1997 The Eu
2、ropean Standard EN 12030 : 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 impact resistanceBS EN 12030 : 1997 This British Standard, having been prepared under the direction of the
3、 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 92/42639 DC ISBN 0 580 26802 0 Amend
4、ments 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 represente
5、d: 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 Consortium Briti
6、sh 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 Transport Engi
7、neering 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 Pall
8、et 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 Sawmillers Associat
9、ion 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 Manufacturer
10、s AssociationBS EN 12030 : 1997 BSI 1997 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 12030 3ii BSI 1997 BS EN 12030 : 1997 National foreword This British Standard has been prepared by Technical Committee PKW/3 and is the English language versi
11、on of EN 12030 : 1996 Self adhesive tapes Measurement of impact resistance, 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 f
12、ront cover, pages i and ii, pages 1 to 6, 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 CEN members Ref. No. EN
13、12030 : 1996 E EUROPEAN STANDARD EN 12030 NORME EUROPE ENNE EUROPA ISCHE NORM May 1996 ICS 83.180 Descriptors: Adhesive tapes, tests, impact tests, measurement, shock resistance English version Self adhesive tapes Measurement of impact resistance Rubans auto-adhe sifs Mesure de la re sistance a limp
14、act Klebeba nder Messung des Schlagwiderstands 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 a national standard without any alteration
15、. 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 in any other language made by translation
16、 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, Iceland, Ireland, Italy, Luxembourg, Net
17、herlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 12030 : 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. This European Standard shall be given the
18、 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 Regulations, the national standards organizations
19、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. Contents Page Foreword 2 1 Scope 3 2 Definitio
20、n 3 3 Principle 3 4 Apparatus 3 5 Test sample and test pieces 3 6 Procedure 3 7 Expression of results 5 8 Test report 5Page 3 EN 12030 : 1996 BSI 1997 1 Scope This standard specifies the method to determine the ability of an adhesive tape to resist impact forces. An adhesive tape may possess adequat
21、e breaking and tear strengths to withstand a steady force, but it may lack sufficient impact strength to withstand the shock forces sometimes experienced in use. The maximum width of adhesive tape tested by this method is 25 mm. For rolls of adhesive tape of this width or less, the impact resistance
22、 measured corresponds to that of adhesive tape as supplied commercially, i.e. with factory-cut edges. For rolls of adhesive tape wider than 25 mm, this test method provides for the adhesive tape to be cut down to 25 mm with a well-sharpened instrument. In such cases, because of the better cutting of
23、 the edges, the results may be higher than would be found on commercially supplied adhesive tape. 2 Definition For the purpose of this standard the following definition applies: impact resistance. The ability of a tape to resist sudden shock. For example as may sometimes be encountered by packages i
24、n transit. 3 Principle The adhesive tape is firmly held horizontally and a given mass is allowed to fall onto its centre from a selected height. The impact resistance is measured in two ways: 3.1 As the maximum shock force that an adhesive tape can withstand under a single impact. 3.2 As the maximum
25、 shock force that an adhesive tape can withstand when a specified number of impacts is repeatedly applied. (In commercial practice there will usually be an agreed minimum shock force for this method between supplier and user. It will suffice to test the adhesive tape at this minimum force only to en
26、sure that it meets this requirement.) 4 Apparatus 4.1 Test equipment (see figure 1) This shall be a free-falling drop tester or similar equipment capable of giving equivalent results. The falling spade shall have a rounded striking face of 25 mm radius. The total mass of the spade shall be 2 kg 0,05
27、 kg. Additional masses shall be provided to extend the range of the equipment. These masses will be in regular increments of 1 kg 0,05 kg. 4.2 A device for measuring the height of the spade If not built into the frame of the drop tester. 5 Test sample and test pieces Condition the sample roll for 24
28、 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. Each test piece shall be 275 mm long and of the same width as the roll of adhesive tape up to a maximum width of 25 mm. For rolls of width greater than 25 mm, a test
29、piece 25 mm wide shall be cut from the adhesive tape, using a sharp knife to obtain clean-cut edges. 6 Procedure 6.1 Standard test conditions The test shall be carried out at 23 C 2 C and 50 % 5 % relative humidity. 6.2 Remove the test pieces radially from the roll at an approximate speed of 300 mm/
30、s, then condition for a further 2 hours in the standard test conditions in order to remove all strain and distortion due to unrolling. 6.3 Because of the nature of the equipment, the impact resistance of the adhesive tape must be determined by a trial and error approach. The technique is to preselec
31、t an impact energy value. The spade is then set at a height above the test piece so that the product of the spade weight and the height of fall equals the preselected impact energy value. This impact energy is then transferred to the test piece by quickly releasing the spade so that it falls and str
32、ikes the test piece. It has been found that the minimum fall required with this equipment to obtain reproducible results is 125 mm. Therefore, if reproducible results are to be obtained, the minimum impact resistance that can be measured with this equipment is 2450 Nmm or 2,45 J (1 Nm = 1 J). 6.4 Im
33、pact resistance to a single shock force 6.4.1 Place the equipment on a solid, level surface so that no noticeable movement of the frame occurs during use. Apply the test piece to the centre of the cylindrical bars, which are located with centres 150 mm apart, so that the test piece receives the impa
34、ct centrally with the rounded striking face of the spade when it falls. Take care when applying the test piece to the bars that it is not stretched, is free from sagging and that the ends of the test piece are adhered firmly and smoothly to the cylindrical bars, to prevent any slipping or unpeeling
35、during the test.Page 4 EN 12030 : 1996 BSI 1997 Figure 1. Impact resistance testerPage 5 EN 12030 : 1996 BSI 1997 6.4.2 Based on the expected value of impact resistance, set the height of fall of the spade required to obtain this value, use additional masses as necessary. Measure the height of the s
36、pade above the test piece from the upper surface of the adhesive tape and the lower end of the rounded striking face of the spade. 6.4.3 Release the spade in such a way that there is no jarring or tilting of the test equipment. Take care that the spade only strikes the test piece once and is not all
37、owed to rest on the adhesive tape. 6.4.4 Repeat the test with the same settings a further 4 times using fresh test pieces unless a failure occurs. Consider that a failure has occurred if the adhesive tape breaks, fractures or partially tears. 6.4.5 Determine, by trial and error, the impact that 5 co
38、nsecutive test pieces can withstand without failure. Carry out tests at approximately 0,5 J increments. This may be achieved by successive 25 mm adjustments to the drop height when using the standard 2 kg spade. For the same drop height adding 1 kg masses to the spade will increase the impact force
39、in the ratio of the augmented to original mass. 6.4.6 The impact resistance to a single shock force is the maximum impact value determined in paragraph 6.4.5. 6.5 Impact resistance to repeated shock forces 6.5.1 Adjust the apparatus so that it produces the minimum shock force agreed between the supp
40、lier and user. 6.5.2 Adopt the same procedure as that described for the determination of the impact resistance to a single shock force with the exception that 25 shocks shall be given to each test piece. 6.5.3 If failure is not obtained after 25 successive impacts, the adhesive tape will be stated t
41、o have impact resistance to repeated shock forces which conforms to the required specification. 6.5.4 Repeat the test on a further 4 test pieces of adhesive tape which must all successfully complete the same test. 7 Expression of results 7.1 The impact resistance to a single shock force is the maxim
42、um impact withstood without failure, and is expressed in joules for a 25 mm width of adhesive tape. 7.2 The impact resistance to repeated shock forces is the maximum impact withstood by 5 test pieces, 25 consecutive times, without failure. This will be expressed in joules for 25 mm width of adhesive
43、 tape. However, if the procedure in 6.5 is adopted, the results state that the adhesive tape has or has not met the requirements of the test using the shock force specified. 8 Test report The test report shall include the following information: a) a reference to this European Standard; b) all inform
44、ation necessary to identify the test sample; c) the date of the test; d) the results obtained indicating whether single on repeated impacts were tested; e) the width of the original sample roll if greater than 25 mm; f) any operation not specified in this European Standard, which may influence the r
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