1、BRITISH STANDARDBS EN 1942:2008Self adhesive tapes Measurement of thicknessICS 83.180g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 1942:2008
2、This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2008 BSI 2008ISBN 978 0 580 58106 9National forewordThis British Standard is the UK implementation of EN 1942:2008. It supersedes BS EN 1942:2003 which is withdrawn.The UK participation i
3、n its preparation was entrusted to Technical Committee PKW/0, Packaging.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct app
4、lication.Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1942March 2008ICS 83.180 Supersedes EN 1942:2003 English VersionSelf adhesive tapes - Measurement of
5、 ThicknessRubans auto-adhsifs - Mesure de lpaisseur Klebebnder - Messung der DickeThis European Standard was approved by CEN on 24 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a n
6、ational standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in
7、 any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Es
8、tonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPIS
9、CHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1942:2008: EEN 1942:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Terms and definitio
10、ns .5 3 Significance and use .5 4 Principle5 5 Required materials.5 6 Apparatus .5 7 Test sample and test pieces .5 8 Procedure .6 9 Expression of results 6 10 Test report 6 Annex A (informative) Identification of significant technical changes in revised European Standard .7 BS EN 1942:2008 EN 1942:
11、2008 (E) 3 Foreword This document (EN 1942:2008) has been prepared by Technical Committee CEN/TC 253 “Self adhesive tapes”, the secretariat of which 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
12、, at the latest by September 2008, and conflicting national standards shall be withdrawn at the latest by September 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identif
13、ying any or all such patent rights. This document supersedes EN 1942:2003. Annex A provides details of significant technical changes between this European Standard and the previous edition. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following count
14、ries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spai
15、n, Sweden, Switzerland and the United Kingdom. BS EN 1942:2008 EN 1942:2008 (E) 4 Introduction This European Standard has been revised in conjunction with AFERA (Association of European Self Adhesive Tapes Manufacturers) in Europe and PSTC (Pressure Sensitive Tape Council) in the USA, with the purpo
16、se to produce a standard which will be accepted in due course by ISO. BS EN 1942:2008 EN 1942:2008 (E) 5 1 Scope This European Standard specifies a method on how to measure the total thickness of both the backing and adhesive layer comprising an adhesive tape. 2 Terms and definitions For the purpose
17、s of this document, the following term and definition applies. 2.1 thickness of adhesive tape vertical distance between the two surfaces of an adhesive tape 3 Significance and use The thickness is an important property of an adhesive tape and is important for certain end uses. It is useful for quali
18、ty control and acceptance testing for conformance to specification. 4 Principle The adhesive tape is placed between the pressure foot and platform of a micrometer within controlled pressure limits. 5 Required materials Appropriate cleaning solvent for the pressure foot. 6 Apparatus A micrometer (cal
19、liper gauge) with two plane surfaces, the smaller of which is circular and 5 mm to 16 mm in diameter. The faces shall be parallel to within 5 m and constrained to move apart along an axis perpendicular to them. When the test piece is placed between the faces the pressure exerted by the foot shall be
20、 in the range of 40 kPa to 60 kPa. The micrometer used shall be sensitive to at least 2 m and have a graduation adapted to this sensitivity. 7 Test sample and test pieces 7.1 Unless otherwise specified, condition the roll in an atmosphere maintained at (23 1) C and (50 5) % relative humidity (RH). 7
21、.2 The test piece width shall be greater than the diameter of the foot of the micrometer and at least 50 mm long. The test pieces shall be free from surface irregularities or creases other than the normal surface features of the type of adhesive tape under test. NOTE Nevertheless, this method can be
22、 applied to adhesive tapes of width less than the diameter of the circular foot on the micrometer. However, in this case, the value obtained can only be approximate. BS EN 1942:2008 EN 1942:2008 (E) 6 7.3 Unwind and discard at least 3 but not more than 6 outer turns of adhesive tape from the roll be
23、fore taking test pieces. 7.4 Unless otherwise specified, remove one test piece per sample roll. 8 Procedure 8.1 Zero the instrument in accordance with the manufacturers instructions. Clean the pressure foot using a suitable solvent before every measurement. 8.2 Place the test piece under the foot of
24、 the micrometer, adhesive side up, and lower the pressure foot gently upon the surface of the tape. Record the reading of the dial to the nearest 2 m 1 s after lowering the foot. Make two further measurements for each test piece using a different area of the test piece each time. Average the measure
25、ments to obtain the thickness value for that test piece. 8.3 To measure double coated tapes with liner, measure the thickness of the test piece with liner in place as in 8.2. Mark the liner where the measurements were made. Remove the liner and repeat the measurements on the liner only as in 8.2 in
26、the marked positions. Average both sets of measurements, subtract the average of the liner from the average of the total (tape plus liner) and record the difference as the thickness of the tape. 9 Expression of results Take as the thickness the arithmetic mean (average) of the measurements made, as
27、described above. Express this in m. 10 Test report The test report shall include the following information: a) reference to this European Standard (EN 1942:2008); b) all information necessary to identify the test sample; c) results obtained; d) width of test piece if narrower than the micrometer foo
28、t; e) any operation not specified in this European Standard which can influence the results; f) date and place of the test; g) name and signature of the person conducting the test. BS EN 1942:2008 EN 1942:2008 (E) 7 Annex A (informative) Identification of significant technical changes in revised Eur
29、opean Standard Significant technical differences between this European Standard and the previous edition are as follows: a) In the definition of equipment, size of the foot on the instrument is to change from “8 mm to 16 mm“ to “5 mm to 16 mm“ in 6; b) In the definition of equipment, the allowable p
30、ressure to be exerted by the foot of the instrument is to change from “50 kPa to 60 kPa“ to “40 kPa to 60 kPa“ in 6. BS EN 1942:2008 BS EN 1942:2008BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards.
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