1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 16420:2013Cork Cork stoppers forstill wines Mechanical andphysical specificationsBS ISO 16420:2013 BRITISH STANDARDNational forewordThis British Standard is the UK impleme
2、ntation of ISO 16420:2013. The UK participation in its preparation was entrusted to TechnicalCommittee PRI/81, Cork.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract.
3、 Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013 ISBN 978 0 580 78001 1 ICS 55.100; 79.100 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the au
4、thority of theStandards Policy and Strategy Committee on 31 January 2013. Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 16420:2013 ISO 2013Cork Cork stoppers for still wines Mechanical and physical specificationsLige Bouchons de lige pour vins tranquilles Spcificationsmcaniqu
5、es et physiquesINTERNATIONAL STANDARDISO16420First edition2013-01-15Reference numberISO 16420:2013(E)BS ISO 16420:2013ISO 16420:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or
6、 utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax
7、 + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 16420:2013ISO 16420:2013(E) ISO 2013 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 23 Terms and definitions . 24 Natural cork stoppers, colmated or non-colmated . 24.1 Dimensions
8、 . 24.2 Moisture content . 34.3 Dimensional recovery after compression 34.4 Extraction force 44.5 Liquid tightness 44.6 Dust content 55 Agglomerate cork stoppers . 55.1 Dimensions . 55.2 Mass and apparent density 55.3 Moisture content . 65.4 Dimensional recovery after compression 65.5 Extraction for
9、ce 75.6 Liquid tightness 75.7 Dust content 76 1 + 1 Stoppers (disk/agglomerate/disk). 86.1 Dimensions . 86.2 Mass 86.3 Moisture content . 96.4 Dimensional recovery after compression 96.5 Extraction force 96.6 Liquid tightness . 106.7 Dust content . 10BS ISO 16420:2013ISO 16420:2013(E)ForewordISO (th
10、e International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committ
11、ee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechn
12、ical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bo
13、dies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any
14、 or all such patent rights.ISO 16420 was prepared by Technical Committee ISO/TC 87, Cork.iv ISO 2013 All rights reservedBS ISO 16420:2013INTERNATIONAL STANDARD ISO 16420:2013(E)Cork Cork stoppers for still wines Mechanical and physical specifications1 ScopeThis International Standard defines, for ea
15、ch type of ready-to-use, cylindrical cork stopper for still wines (colmated or non-colmated natural cork stoppers, agglomerate cork stoppers, 1 + 1 stoppers), a set of specifications corresponding to different tested parameters, a list of which is given below: dimensions; mass (for 1+1 stoppers only
16、); mass and apparent density (for agglomerate cork stoppers only); moisture content; dimensional recovery after compression; extraction force; liquid tightness; dust content.For all parameters, this set of specifications comprises: a proposal for the number of stoppers to be tested (incremental samp
17、le); an acceptable quality level;and, for certain parameters: nominal value or values; specification limits (or “tolerances”).For cork stoppers for still wines, and for certain parameters, the concept of a range is introduced, with 3 decreasing levels of requirements: upper range; standard range; en
18、try level.It is, therefore, up to the consumer to specify, for each batch of cork stoppers ordered, what their needs are based on these three specification levels (or ranges).It is also up to each supplier, besides a commercial reference for each batch of cork stoppers, to define which range applies
19、 in terms of the requirements in this International Standard.The sampling method, as well as the possible repetitions of incremental samples are defined by the sampling standard (currently being drafted) or defined jointly by the consumer and the supplier.The stoppers tested shall comply with the re
20、quirements of ISO 9727. ISO 2013 All rights reserved 1BS ISO 16420:2013ISO 16420:2013(E)2 Normative referencesThe 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
21、 the referenced document (including any amendments) applies.ISO 633, Cork VocabularyISO 9727-1, Cylindrical cork stoppers Physical tests Part 1: Determination of dimensionsISO 9727-2, Cylindrical cork stoppers Physical tests Part 2: Determination of mass and apparent density for agglomerated cork st
22、oppersISO 9727-3, Cylindrical cork stoppers Physical tests Part 3: Determination of humidity contentISO 9727-4, Cylindrical cork stoppers Physical tests Part 4: Determination of dimensional recovery after compressionISO 9727-5, Cylindrical cork stoppers Physical tests Part 5: Determination of extrac
23、tion forceISO 9727-6, Cylindrical cork stoppers Physical tests Part 6: Determination of liquid tightnessISO 9727-7, Cylindrical cork stoppers Physical tests Part 7: Determination of dust contentEN 12726, Packaging Cork mouth finish with a bore diameter of 18,5 mm for corks and tamper evident capsule
24、s3 Terms and definitionsFor the purposes of this document, the terms and definitions in ISO 633 and the following apply.3.1still winewine is said to be still when the excess pressure of carbon dioxide it contains is less than or equal to 0,5 bar at 20 C1)4 Natural cork stoppers, colmated or non-colm
25、ated4.1 Dimensions4.1.1 Number of stoppers to be tested (incremental sample): 324.1.2 Nominal values and specification limits1) Definition from the International Code of Oenological Practices of the International Organisation of Vine and Wine.2 ISO 2013 All rights reservedBS ISO 16420:2013ISO 16420:
26、2013(E)Table 1Stopper type Parameter measuredNormal diameter (for cork mouth finish fol-lowing EN 12726)OvalityLength (mm)NaturalNominal value 24 mm 38, 44, 45, 49, 53 or 54Specification limits 0,5 mm 0,7 mm 0,7Colmated natural corkNominal value 24 mm 38, 44, 45, 49, 53 or 54Specification limits 0,5
27、 mm 0,7 mm 0,7NOTE The same specification limits apply for natural and colmated natural cork stoppers whose nominal dimensions are not listed in Table 1 (for special cork mouth finishes or for specific uses).4.1.3 Acceptable Quality Level (AQL)Table 2Parameter measuredStopper range Diameter Ovality
28、Ovality 1,2 mm LengthUpper rangeAQL: 2,5: AQL: 4 AQL: 0,65 AQL: 4A 2/R 3 A 3/R 4 A 0/R 1 A 3/R 4Standard rangeAQL: 4 AQL: 6,5 AQL: 0,65 AQL: 4A 3/R 4 A 5/R 6 A 0/R 1 A 3/R 4Entry levelAQL: 6,5 AQL: 6,5 AQL: 0,65 AQL: 6,5A 5/R 6 A 5/R 6 A 0/R 1 A 5/R 6A 2/R 3 means that, of the 32 stoppers tested: th
29、e batch shall be accepted if 2 stoppers, at most, have a result below or above the specification limits; the batch shall be rejected if 3 stoppers or more have a result below or above the specification limits.4.2 Moisture content4.2.1 Number of stoppers to be tested (incremental sample): 204.2.2 Nom
30、inal value: 6 %4.2.3 Specification limits: 2 % (or from 4 % to 8 %)4.2.4 Acceptable Quality Level (AQL)For all types of stopper the AQL is 4, which means that, for the sampling size stated in subclause 4.2.1: the batch shall be accepted if 2 stoppers, at most, have a result below or above the specif
31、ication limits; the batch shall be rejected if 3 stoppers or more have a result below or above the specification limits.4.3 Dimensional recovery after compression4.3.1 Number of stoppers to be tested (incremental sample): 54.3.2 Lower specification limit: 90 % ISO 2013 All rights reserved 3BS ISO 16
32、420:2013ISO 16420:2013(E)4.3.3 Acceptable Quality Level (AQL)For the 5 stoppers tested: the batch shall be accepted if no stopper has a percentage of dimensional recovery below 90 %; the batch shall be rejected if 1 or more stoppers have a percentage of dimensional recovery below 90 %.4.4 Extraction
33、 force4.4.1 Number of stoppers to be tested (incremental sample): 54.4.2 Upper and lower specification limit values, expressed in daNThese values apply to tests carried out with glass cylindrical tubes.NOTE For the same batch of stoppers, it is not possible to compare the extraction force test resul
34、ts obtained from cylindrical glass tubes with the results obtained from the necks of bottles.Table 3Length of stoppers 38 mm 44/45 mm 49 mm and aboveNatural cork stoppers, colmated or non-colmated 12 daN to 35 daN 15 daN to 40 daN 15 daN to 45 daNTable 3 shows, for each stopper length, the range of
35、nominal values found according to the corresponding destination wine markets.For the same batch of stoppers, the extraction force values measured at a speed of 30 cm/min shall be below those measured at a speed of 60 cm/min.In all cases, the extraction forces for all stoppers tested from the same ba
36、tch shall fall within a range between the mean and 1/4 of the mean.EXAMPLE (20 5) daN.4.5 Liquid tightness4.5.1 Number of stoppers to be tested (incremental sample): 64.5.2 Liquid test pressures Upper range: 1,2 bar; Standard range: 0,9 bar; Entry level: 0,9 bar;4.5.3 Acceptable Quality Level (AQL)F
37、or the 6 stoppers tested, at the pressures indicated above: the batch shall be accepted if no stoppers leak; the batch shall be rejected if 1 or more stoppers leak.4 ISO 2013 All rights reservedBS ISO 16420:2013ISO 16420:2013(E)4.6 Dust content4.6.1 Number of stoppers to be tested (incremental sampl
38、e): 44.6.2 Acceptable Quality Level (AQL) Upper range: average content per stopper 1,5 mg; Standard range: average content per stopper 2,0 mg; Entry level: average content per stopper 2,0 mg.The result shall be accompanied by a comment on the anomalies of the cork stoppers submitted for testing like
39、ly to have an influence on the dust content (earthy corkwood, excess colmatage).5 Agglomerate cork stoppers5.1 Dimensions5.1.1 Number of stoppers to be tested (incremental sample): 325.1.2 Nominal values and specification limitsTable 4Stopper type Parameter measured Diameter LengthAgglomerate cork s
40、toppers for still winesNominal value (22,5 to 23,5) mm (38 to 44) mmSpecification limits 0,5 mm 0,5 mmThe same specification limits shall apply for agglomerate cork stoppers whose nominal dimensions are not listed in Table 4 (for special cork mouth finishes or for specific uses).5.1.3 Acceptable Qua
41、lity Level (AQL)The AQL is 1,5, which means that for the sampling size stated (32 stoppers): the batch shall be accepted if 1 stopper, at most, has a result below or above the specification limits; the batch shall be rejected if 2 or more stoppers have a result below or above the specification limit
42、s.5.2 Mass and apparent density5.2.1 Number of stoppers to be tested (incremental sample): 325.2.2 Specification limits: ISO 2013 All rights reserved 5BS ISO 16420:2013ISO 16420:2013(E)Table 5Stopper typeLength (mm)Diameter (mm)Parameter meas-uredMass (g)Density (kg/m3)Agglomerate38 22,5Nominal valu
43、e4,4290,0038 23,0 4,638 23,5 4,840 22,5 4,640 23,0 4,840 23,5 5,042 22,5 4,842 23,0 5,142 23,5 5,344 22,5 5,144 23,0 5,344 23,5 5,5Specification limits 0,7 405.2.3 Acceptable Quality Level (AQL)The AQL is 1,5, which means that, for the sampling size stated (32 stoppers): the batch shall be accepted
44、if 1 stopper, at most, has a result below or above the specification limits; the batch shall be rejected if 2 or more stoppers have a result below or above the specification limits.5.3 Moisture content5.3.1 Number of stoppers to be tested (incremental sample): 205.3.2 Nominal value: 6 %5.3.3 Specifi
45、cation limits: 2 % (or from 4 % to 8 %)5.3.4 Acceptable Quality Level (AQL)For all types of stopper the AQL is 4, which means that, for the sampling size stated (20 stoppers): the batch shall be accepted if 2 stoppers, at most, have a result below or above the specification limits; the batch shall b
46、e rejected if 3 or more stoppers have a result below or above the specification limits.5.4 Dimensional recovery after compression5.4.1 Number of stoppers to be tested (incremental sample): 55.4.2 Lower specification limit: 90 %5.4.3 Acceptable Quality Level (AQL)5.4.4 For the 5 stoppers tested:6 ISO
47、 2013 All rights reservedBS ISO 16420:2013ISO 16420:2013(E) the batch shall be accepted if no stoppers have a percentage of dimensional recovery below 90 %; the batch shall be rejected if 1 or more stoppers have a percentage of dimensional recovery below 90 %.5.5 Extraction force5.5.1 Number of stop
48、pers to be tested (incremental sample): 55.5.2 Upper and lower specification limit values, expressed in daNThese values apply to tests carried out using glass cylindrical tubes.NOTE For the same batch of stoppers, it is not possible to compare the extraction force test results obtained from cylindri
49、cal glass tubes with the results obtained from the necks of bottles.Table 6Length of stoppers 38 mm 44 mmAgglomerate cork stoppers (12 to 30) daN (12 to 30) daNTable 6 shows the range of nominal values for each stopper length found according to the corresponding destination wine markets.For the same batch of stoppers, the extraction force values measured at a speed of 30 cm/min shall be below those measured at a speed of 60 cm/min.In
