1、February 2008DEUTSCHE NORM English price group 6No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 55.120!$L1+“1411408www
2、.din.deDDIN EN 15421Packaging Flexible aluminium tubes Determination of the adhesion of the internal and external protectivelacqueringEnglish version of DIN EN 15421:2008-02Packmittel Aluminiumtuben Bestimmung der Haftfestigkeit des Innen- und AuenschutzlackesEnglische Fassung DIN EN 15421:2008-02Su
3、persedesDIN 55436-6:1985-04www.beuth.deDocument comprises 9 pagesDIN EN 15421:2008-02 2 National foreword This standard has been prepared by Technical Committee CEN/TC 261 “Packaging” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Verpac
4、kungswesen (Packaging Standards Committee), Technical Committee NA 115-02-08 AA Tuben. Amendments This standard differs from DIN 55436-6:1985-04 as follows: a) DIN 55436-6:1985-04 has been included in this European standard. b) Details relating to sampling and speed of compression have been deleted.
5、 c) The test temperature has been specified to be (23 5) C. d) The standard has been editorially revised. Previous editions DIN 55436-6: 1985-04 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15421November 2007ICS 55.120English VersionPackaging - Flexible aluminium tubes - Determination of theadh
6、esion of the internal and external protective lacqueringEmballage - Tubes souples en aluminium - Dterminationde ladhrence des vernis de protection intrieure etextrieurePackmittel - Aluminiumtuben - Bestimmung derHaftfestigkeit des Innen- und AuenschutzlackesThis European Standard was approved by CEN
7、 on 7 October 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may
8、 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 any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN
9、Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, N
10、orway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form
11、and by any means reservedworldwide for CEN national Members.Ref. No. EN 15421:2007: EEN 15421:2007 (E) 2 Contents Page Foreword. 3 1 Scope . 4 2 Principle. 4 3 Apparatus 4 4 Test conditions . 6 5 Procedure 6 6 Test report. 6 Bibliography . 7 DIN EN 15421:2008-02 EN 15421:2007 (E) 3 Foreword This doc
12、ument (EN 15421:2007) has been prepared by Technical Committee CEN/TC 261 “Packaging”, 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, at the latest by May 2008, and conf
13、licting national standards shall be withdrawn at the latest by May 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 identifying any or all such patent rights. According to
14、the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithu
15、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 15421:2008-02 EN 15421:2007 (E) 4 1 Scope This standard specifies a method for the determination of the adhesion of the internal and external protect
16、ive lacquer of aluminium tubes. It is applicable to aluminium tubes that are coated with an internal or external protective lacquer and which are used for packing, e.g. pharmaceutical, cosmetic, hygiene, food and other household products. 2 Principle By means of a compressing device the tube is comp
17、ressed to a defined extent and under defined temperature conditions to create a standardized and sharp-edged deformation of the tube. The kinks are checked visually for any cracks and/ or delamination of internal or external lacquer. 3 Apparatus Compressing device according to Figure 1 (example). DI
18、N EN 15421:2008-02 EN 15421:2007 (E) 5 Key 1 Compressing clamp 2 Guide pin (for tubes diameter 19 mm = 8 mm, for tubes diameter 19 mm = 15 mm) 3 Guide bolt 4 Base plate 5 Tube Figure 1 Test device DIN EN 15421:2008-02 EN 15421:2007 (E) 6 4 Test conditions The tests are carried out at a temperature b
19、etween (23 5) C. For testing the adhesive strength of inner and outer protective lacquers of products stored or used under cold conditions, (5 + 3) C, the samples have to be stored under the same conditions for at least 2 h prior to testing. The test has to be done immediately after taking the sampl
20、es out of the refrigerator. 5 Procedure Insert the tube in the compressing device. In order to keep the tube straight during compression an internal guide pin should be used. Compress the tube until the tube body is reduced to (15 5) % of the original tube body length. Remove the crushed tube from t
21、he compressing device and stretch it again in the axial direction. Check the stretched tubes for cracked and detached lacquer parts of the inner and outer protective lacquering. If there are any cracks or detached lacquer parts, the samples have failed. 6 Test report The test report shall contain th
22、e following information: a) Reference to this standard and if necessary a specification for the method of sampling and acceptance of the batch. b) Complete identification of the batch and of the tubes checked. c) Description and the dimensions of the samples. d) Nature of the internal and external p
23、rotective lacquering. e) Test temperature. f) Number of samples checked. g) Number and description of defects. h) If necessary, acceptance or refusal of the batch depending on the specifications. i) All factors which could have affected the results or all operating details not specified in this stan
24、dard. j) Date, place of test and name of tester. DIN EN 15421:2008-02 EN 15421:2007 (E) 7 Bibliography 1 EN 12374, Packaging - Flexible tubes - Terminology 2 EN 13046, Packaging - Flexible cylindrical metallic tubes - Dimensions and tolerances 3 EN 13047, Packaging - Flexible conical metallic tubes - Dimensions and tolerances DIN EN 15421:2008-02
