1、August 2009DEUTSCHE 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!$YA“1543027www.di
2、n.deDDIN EN 13048Packaging Flexible aluminium tubes Internal lacquer film thickness measurement methodEnglish version of DIN EN 13048:2009-08Packmittel Aluminiumtuben Verfahren zur Bestimmung der Dicke des InnenschutzlackesEnglische Fassung DIN EN 13048:2009-08SupersedesDIN EN 13048:2000-10www.beuth
3、.deDocument comprises pages8DIN EN 13048:2009-08 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 Verpackungswesen (Packaging Standards Committ
4、ee), Technical Committee NA 115-02-08 AA Tuben. Amendments This standard differs from DIN EN 13048:2000-10 as follows: a) Reference to EN ISO 2360 has been added. b) Subclause 6.1 “Preliminary precautions” has been modified. c) The standard has been editorially revised. Previous editions DIN 55436-5
5、: 1983-08 DIN EN 13048: 2000-10 2 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13048April 2009ICS 55.120 Supersedes EN 13048:2000 English VersionPackaging - Flexible aluminium tubes - Internal lacquer filmthickness measurement methodEmballage - Tubes souples en aluminium - Mthode dedtermination
6、 de lpaisseur de vernis intrieurPackmittel - Aluminiumtuben - Verfahren zur Bestimmungder Dicke des InnenschutzlackesThis European Standard was approved by CEN on 21 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
7、 EuropeanStandard the status of a national 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 (Eng
8、lish, 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 Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria,
9、Cyprus, Czech Republic, Denmark, Estonia, 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 STANDARDIZATIONCO
10、MIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13048:2009: EEN 13048:2009 (E) 2 Contents Page Foreword . 3 1 Scope .
11、 4 2 Normative references . 4 3 Terms and definitions 4 4 Principle . 4 5 Apparatus 4 6 Method . 5 7 Test report . 6 DIN EN 13048:2009-08 EN 13048:2009 (E) 3 Foreword This document (EN 13048:2009) has been prepared by Technical Committee CEN/TC 261 “Packaging”, the secretariat of which is held by AF
12、NOR. 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 October 2009, and conflicting national standards shall be withdrawn at the latest by October 2009. Attention is drawn to the possibility that s
13、ome 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. This document supersedes EN 13048:2000. It is based on the professional recommendations of the European Tube Manufacturers Associa
14、tion (ETMA) According to 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, Irel
15、and, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 13048:2009-08 EN 13048:2009 (E) 4 1 Scope This document specifies a method for the determination of the thickness of the lac
16、quer film applied inside cylindrical and conical aluminium tubes. The method is a reference. It can also be used as a reference when calibrating other electronic instruments suitable for determining coating weight thickness, e.g. by capacitance measurement by eddy current. It is applicable to alumin
17、ium tubes used for packing pharmaceutical, cosmetic, hygiene, food and other domestic products. NOTE Although not specified in this standard there are available suitable automatic film thickness measurement instruments that provide instantaneous results with good accuracy ( 1m). 2 Normative referenc
18、es The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 12374:1998, Packaging Flexible Tubes Termin
19、ology EN ISO 2360:2003, Non-conductive coatings on non-magnetic electrically conductive basis materials Measurement of coating thickness Amplitude-sensitive eddy-current method (ISO 2360:2003) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12374:1998
20、 and EN ISO 2360:2003 apply. 4 Principle The measurement of the thickness of the lacquer film inside aluminium tubes with a micrometer or dial indicator after separation of the film from the aluminium tube and its enamel decoration by chemical means. Through a chemical reaction the aluminium is diss
21、olved and hydrogen gas is generated. The internal lacquer film remains intact. 5 Apparatus 5.1 Test measuring and other equipment a) Micrometer or dial indicator giving a precision of 0,001 mm (1 m); b) Oven; c) Extractor fan; d) Glass container of a size capable of containing a tube cut as in Figur
22、e 1; e) Scissors; f) Tweezers; DIN EN 13048:2009-08 EN 13048:2009 (E) 5 g) Filter paper; h) Protective clothing and glasses. 5.2 Chemical Agents a) Solvent capable of dissolving the external enamel of the tubes; b) Sodium hydroxide with a concentration of 20 g of NaOH/100 ml. NOTE Hydrochloric acid
23、at a concentration of 10 g HCI/100 ml may be used instead of sodium hydroxide. 6 Method 6.1 Preliminary Precautions The preparation of samples requires the handling and use of hazardous materials. This document does not purport to address all of the safety problems associated with its use. It is the
24、 responsibility of the user of this document to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. 6.2 Preparation of Samples a) Cut the tubes with the scissors as shown in Figure 1 (all measurements in mm). b) Dissolve the ex
25、ternal enamel with the solvent. c) Pour NaOH solution into the container in a quantity sufficient to cover the tube. d) Place the container under the extract fan. e) Immerse the tube in the NaOH solution. f) With the tweezers remove the lacquer film and rinse with water. g) Dry the film between two
26、sheets of filter paper. Then place the film in the oven for 1 h at 80 C. 6.3 Measurement procedure After cooling, the thickness of the lacquer film is measured at a temperature of between 10C and 25C with the micrometer. These measurements shall be taken at the different points indicated in Figure 1
27、. DIN EN 13048:2009-08 EN 13048:2009 (E) 6 Key a Head of tube b Measuring points d1=d1 d2= 5 - 10 mm d3= 10 - 20 mm Figure 1 Measuring points 7 Test report The report of the measurement shall contain the following information: a) reference to this standard and if necessary a specification for the me
28、thod of sampling and acceptance of the batch; b) complete identification of the batch and of the tubes checked; c) description and dimensions of the samples; d) identification of the test instrument; e) nature of the internal lacquer; f) results of the film thickness at the different points of measu
29、rement; g) number of samples checked; h) number of defects. A defect is any tube with an internal lacquer film thickness that falls outside the specified or agreed limits (see 7a); i) if necessary, acceptance or refusal of the batch depending on the specifications (see 7a); DIN EN 13048:2009-08 j) all factors which can have affected the results and which are not specified in this standard; k) date, place of test and name of tester.
