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1、BRITISH STANDARD BS EN 10333:2005 Steel for packaging Flat steel products intended for use in contact with foodstuffs, products or beverages for human and animal consumption Tin coated steel (tinplate) The European Standard EN 10333:2005 has the status of a British Standard ICS 67.250 ? Licensed Cop
2、y: sheffieldun sheffieldun, na, Thu Oct 26 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 10333:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 4 May 2005 BSI 4 May 2005 ISBN 0 580 45952 7 National foreword This British Standa
3、rd is the official English language version of EN 10333:2005. The UK participation in its preparation was entrusted to Technical Committee ISE/29 Tinplate and blackplate, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretar
4、y. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue
5、 or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the t
6、ext; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front c
7、over, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na,
8、 Thu Oct 26 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10333 April 2005 ICS 67.250 English version Steel for packaging - Flat steel products intended for use in contact with foodstuffs, products and beverages for human and animal consumpt
9、ion - Tin coated steel (tinplate) Acier pour emballage - Produits plats en acier destin entrer au contact des denres, produits et boissons pour lalimentation de lhomme et des animaux - Acier revtu dtain (fer blanc ou fer tam) Verpackungsblech - Flacherzeugnisse aus Stahl fr die Verwendung in Berhrun
10、g mit Lebensmitteln, Produkten und Getrnken fr den menschlichen und tierischen Verzehr - Verzinnter Stahl (Weiblech) This European Standard was approved by CEN on 7 March 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eu
11、ropean 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 versions (Engli
12、sh, 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, Cyprus, Cze
13、ch Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE N
14、ORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10333:2005: E Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:45:02 GM
15、T+00:00 2006, Uncontrolled Copy, (c) BSI EN 10333:2005 (E) 2 Contents Page Foreword 3 1 Scope.4 2 Normative references .4 3 Terms and definitions.4 4 Information to be provided by the purchaser .5 5 Dimensions and dimensional tolerances5 6 Requirements5 6.1 Base metal.5 6.2 Tin coating.5 6.3 Passiva
16、tion and oiling5 7 Checks.6 8 Sampling6 9 Test method.6 10 Designation .6 11 Marking, labelling, packaging6 Annex A (normative) Determination of lead7 A.1 Scope.7 A.2 Principle.7 A.3 Apparatus7 A.4 Reagents7 A.5 Health and safety 8 A.6 Instructions .8 A.7 Figures.8 A.8 Expression of results11 Biblio
17、graphy.12 Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10333:2005 (E) 3 Foreword This document (EN 10333:2005) has been prepared by Technical Committee ECISS/TC 26 “Tinmill products - Qualities, dimensions, tolerances and specific test
18、s”, the secretariat of which is held by BSI. 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 2005, and conflicting national standards shall be withdrawn at the latest by October 2005. Acco
19、rding to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithua
20、nia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10333:2005 (E) 4 1 Scope This document specifies the composi
21、tion of the base steel used for the production of tinplate for use in direct contact with foodstuffs or products for human and animal consumption as well as the composition of tin used to coat it. Tinplate can be produced with or without an organic coating. The main examples of use are: drinks cans,
22、 food cans, packaging of dry foods, aerosol cans. The material should be chosen in accordance with the conditions for its use. This standard does not apply to categories of steel other than steel for packaging intended for use in contact with foodstuffs, products or beverages for human or animal con
23、sumption. 2 Normative references 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 610, Tin and
24、tin alloys Ingot tin EN 10202:2001, Cold reduced tinmill products Electrolytic tinplate and electrolytic chromium/chromium oxide coated steel EN 10204, Metallic products Types of inspection documents EN 10334, Steel for packaging Flat steel products intended for use in contact with foodstuffs, produ
25、cts and beverages for human and animal consumption - Non-coated steel (blackplate) EN ISO 14284, Steel and iron Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996) 3 Terms and definitions For the purposes of this document, the following terms and defini
26、tions apply. 3.1 tinplate cold-rolled blackplate coated on at least one side with a layer of tin. The mass of the coating can reach up to 15.1 g/m 3.2 blackplate See EN 10334 3.3 steel intended for use in contact with foodstuffs See EN 10334 Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:
27、45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10333:2005 (E) 5 3.4 passivation surface treatment designed to improve resistance to oxidation, resistance to sulphurizing and ease of lacquering or printing on the tin coating 3.5 steel for packaging See EN 10334 3.6 steel for other applications t
28、han packaging See EN 10334 4 Information to be provided by the purchaser The information, which shall be provided by the purchaser at the time of enquiry and order, shall satisfy the requirements of EN 10202. NOTE Furthermore, the purchaser can specify the type of oil suitable for food contact to be
29、 used when the product is delivered oiled. 5 Dimensions and dimensional tolerances The nominal dimensions shall be agreed at the time of enquiry and order. Dimensional tolerances shall meet the requirements of Clause 9 of EN 10202:2001. 6 Requirements 6.1 Base metal The composition of the base metal
30、 shall meet the requirements of EN 10334. NOTE As described in EN 10202:2001 informative Annex A, tighter limits may be necessary for certain elements particularly for manufacturing reasons. 6.2 Tin coating The chemical composition of the tin ingot used shall comply with the requirements set down in
31、 EN 610 for grade Sn99.85 with the exception of the Pb content, which shall be 0.010 %. The Pb content of the tin coating shall be 0,010 %. 6.3 Passivation and oiling The requirements specified in EN 10202 shall apply. Unless otherwise specified at the time of enquiry and order, the products deliver
32、ed shall be coated with an oil that is suitable for contact with foodstuffs. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10333:2005 (E) 6 7 Checks At the request of the purchaser, conformity with the order requirements shall be proven
33、 in accordance with this standard. Unless otherwise specified, the inspection document 2.1 shall be used in accordance with EN 10204. 8 Sampling The sampling process and the preparation of the sample shall be in accordance with the requirements of EN ISO 14284. 9 Test method Lead present in the tin
34、coating shall be assayed in accordance with the requirements contained within Annex A. Other methods can be used. Nevertheless, in cases of dispute, the method defined in Annex A is the reference method. 10 Designation The designation shall be in accordance with EN 10202. 11 Marking, labelling, pack
35、aging Each coil or bundle shall display a label indicating the reference to this standard, the name and the trademark of the manufacturer and the batch identification. The packaging specifications shall be agreed at the time of enquiry and order. Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 2
36、6 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10333:2005 (E) 7 Annex A (normative) Determination of lead A.1 Scope Measurement of the lead content of tin coating for steel for packaging. A.2 Principle Coulometric dissolution of tin coating in hydrochloric acid; Elimination of tin through
37、hydrobromic distillation; Placing of remaining elements into solution and assaying of lead by means of atomic absorption spectro- photometry. A.3 Apparatus Direct current generator for currents of between 0 mA and 500 mA; Potentiometer recorder with a range of 0 mV to 2500 mV; Calomel electrode (ECS
38、) and counter-electrode in platinum wire; Glass laboratory receptacles and adjustable hot plate; Air-drying vinyl spray paint can; Atomic absorption spectro-photometer with oven able to detect between 0 g/l and 100 g/l lead. A.4 Reagents All of the solutions shall be prepared on the basis of product
39、s intended specifically for toxicological analyses: Hydrochloric acid 2N; Hydrochloric acid at 10 %; Bromine solution at 10 % in hydrobromic acid; Sulphuric acid 9N; Lead standard solution at 5 g/mI prepared by dilution of a commercial solution at 1 g/l. Licensed Copy: sheffieldun sheffieldun, na, T
40、hu Oct 26 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10333:2005 (E) 8 A.5 Health and safety For the needs of the following instructions, the safety data sheets of the relevant used chemicals are applicable. A.6 Instructions Cut out a strip of tinplate (about 12 cm x 2.5 cm); Lacquer the
41、surface which is not analysed; Overlap the edges of the sample, with the plain surface inwards, mount on a steel sample-holder (see Figure A.1) and insert into a 150 ml low profile beaker; Add about 50 ml of hydrochloric acid 2N, so that the tinplate is completely submerged; Position the electrode s
42、ystem (see Figure A.2) and perform the coulometric dissolution of tin by applying a current of 8 mA/cm; Load the dissolution curve of tin with the potentiometric recorder; Remove the sample and the electrodes, rinse in 2 changes of water and add 2 ml of sulphuric acid 9N; Reduce the volume to 5 ml a
43、pprox. through soft evaporation; Add 5 ml of the bromine solution and proceed to the distillation of the tin by increasing the heat and stirring the contents of the beaker continuously; When white sulphuric flames begin to be produced, turn the heat up to a very high temperature to eliminate the sul
44、phuric acid entirely; Leave to cool, then take up the dry residue with 10 ml hydrochloric acid to 10 % by placing on a low heat to dissolve; Transfer into a 100 ml volumetric flask and assay the lead by means of an electrothermal atomic absorption spectro-photometry; Carry out simultaneous blank tes
45、ts for all reagents and at least 2 reference points leading to final solutions before spectro-photometry containing between 0 g/l and 100 g/l of lead (1 ml of the standard solution diluted in 100 ml leads to 50 g/l of lead). A.7 Figures Sample holder: fold a strip of blackplate 1 cm wide in half len
46、gthways, leaving sufficient space between the two sides of the fold to slide in the cylinder of tinplate as shown in Figure A.1: Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10333:2005 (E) 9 1 2 3 4 5 67 Key 1 Band of blackplate 2 Axis
47、 of folding 3 Folding 180 4 Axis of folding 90 5 Sliding in the fold 6 White iron sample hemmed 7 Fixed sample seen aside Figure A.1 Sample holder Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 10333:2005 (E) 10 1 23 4 5 6 7 8 - + Key 1
48、Generator 2 Auxiliary electrode in platinum 3 Electrode of reference (EC) 4 Recorder 5 HCI 2N 6 Beaker 150 ml 7 Sample support in black plate 8 Connection clip Figure A.2 Coulometry cell Licensed Copy: sheffieldun sheffieldun, na, Thu Oct 26 04:45:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 103
49、33:2005 (E) 11 A.8 Expression of results A.8.1 Weight of tin dissolved An example of the free and alloyed tin dissociation curve is given in Figure A.3. 1 2 E (mV) t(s) Key 1 ttotal 2 t1 (free tin) Figure A.3 Free and alloyed tin dissolution curve NOTE The time and dissolution characteristics of free and alloyed tin are taken at the points of inflection of the voltage level steps measured by the