1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 16291-1:2013Glass packaging Screw finishes for pressure capsulesPart 1: Returnable glass MCA 2 finishBS EN 16291-1:2013 BRITISH STANDARDNational forewordThis British Standa
2、rd is the UK implementation of EN 16291-1:2013. The UK participation in its preparation was entrusted to TechnicalCommittee PKW/0/-/7, Packaging - Glass.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all
3、the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 74960 5 ICS 55.100 Compliance with a British Standard cannot confer immunity from legal obligations.This British St
4、andard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 16291-1:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16291-1 March 2013 ICS 55.100 English Version Glass packaging
5、 - Screw finishes for pressure capsules - Part 1: Returnable glass MCA 2 finish Emballage en verre - Bagues vis pour capsules pression - Partie 1: Bague MCA 2 pour verre consign Verpackungen aus Glas - Schraubmundstcke fr Flaschen mit Innendruck - Teil 1: Mehrweg-MCA 2-Mundstck This European Standar
6、d was approved by CEN on 12 January 2013. 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. Up-to-date lists and bibliographical references concerning su
7、ch national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its ow
8、n language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
9、Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORM
10、UNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16291-1:2013: EBS EN 16291-1:2013EN 16291-1:2013 (E) 2 Contents Page Foreword . 3 Introduction 4 1 Scope 5 2 Terms and de
11、finitions 5 3 Dimensions. 5 Bibliography 10 BS EN 16291-1:2013EN 16291-1:2013 (E) 3 Foreword This document (EN 16291-1:2013) 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 stan
12、dard, either by publication of an identical text or by endorsement, at the latest by September 2013, and conflicting national standards shall be withdrawn at the latest by September 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent ri
13、ghts. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. EN 16291, Glass packaging Screw finishes for pressure capsules, consists of the following parts: Part 1: Returnable glass MCA 2 finish; Part 2: One way glass MCA 2 finish. According to the CEN/CENEL
14、EC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Ice
15、land, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16291-1:2013EN 16291-1:2013 (E) 4 Introduction This document is based on CE.T.I.E. (International Technical
16、 Centre for Bottling and related Packaging) data sheet GME 320 1. Efficient packaging is of great importance for the distribution and the protection of goods. Insufficient or inappropriate packaging can lead to damage or wastage of the contents of the pack. BS EN 16291-1:2013EN 16291-1:2013 (E) 5 1
17、Scope This European Standard specifies the dimensions of the screw finish for glass containers designated MCA 2 for returnable glass. 2 Terms and definitions For the purposes of this document, the following term and definition applies. 2.1 MCA (glass) finish designed for the closure of pressurised o
18、r vacuum liquids with a tamper-evident closure (metal or plastic) 3 Dimensions The design and dimensions of the finish shall be as shown in Table 1 and Figures 1, 2, 3, 4 and 5. Table 1 Design and dimensions of the finish Pitch TPI cutter 3,175 mm 2 12 8 12,5 mm = Helix angle or angle or fixture to
19、cutter. NOTE TPI = Threads per Inch. One inch is equal to 25,4 mm. The Tan of helix angle for cutter is calculated via the following formula: pitch Tan = (nominal T + nominal E) 2 where T is the thread diameter; E is the wall diameter of threaded finish. The average of the maximum and minimum of “L“
20、 diameter is as close as possible to “L“ nominal. The mean diameter 2min diameter max diameter + Lis in the tolerance of 0,2 mm. Optional: depressed thread at mould parting line (see EN 16292). BS EN 16291-1:2013EN 16291-1:2013 (E) 6 Dimensions in millimetres Key N neck (under bead) diameter H threa
21、d height S start of thread position from sealing surface to intersection of thread flank F height of the finish L locking bead diameter T thread diameter E wall diameter of threaded finish NOTE Bore diameter: 17,0 mm 0,5 mm for a depth of 3 mm. Figure 1 MCA 2 finish BS EN 16291-1:2013EN 16291-1:2013
22、 (E) 7 Dimensions in millimetres Key a mould parting line b sealing surface The sealing surface is smooth and free of any defects and flash. Figure 2 Possible alternative construction of the bore entrance to suit glass manufacturer BS EN 16291-1:2013EN 16291-1:2013 (E) 8 Dimensions in millimetres Mi
23、nimum through bore 16,0 Figure 3 Detail of the profile .BS EN 16291-1:2013EN 16291-1:2013 (E) 9 NOTE Z-Z is the last full depth and width of thread. Beyond this point and Y-Y, the thread root is gradually increased to full thread diameter T in 90 Figure 4 Run out of thread Dimensions in millimetres
24、Figure 5 Limit of construction BS EN 16291-1:2013EN 16291-1:2013 (E) 10 Bibliography 1 CE.T.I.E. data sheet GME 320 - Pilferproof for pressured beverages1) 2 EN 16292, Glass packaging Screw finishes Depressed threads 1) Obtainable through Centre Technique International de lEmbouteillage et du Condit
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