1、BRITISH STANDARD BS ISO 9727-6:2007 Cylindrical cork stoppers Physical tests Part 6: Determination of liquid tightness ICS 55.100; 79.100 BS ISO 9727-6:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 June 2007 BSI 2007 ISBN 978 0 580
2、52941 2 National foreword This British Standard was published by BSI. It is the UK implementation of ISO 9727-6:2007. The UK participation in its preparation was entrusted to Technical Committee PRI/81, Cork. A list of organizations represented on this committee can be obtained on request to its sec
3、retary. 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 cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. Date Comments Reference n
4、umber ISO 9727-6:2007(E)INTERNATIONAL STANDARD ISO 9727-6 First edition 2007-05-15 Cylindrical cork stoppers Physical tests Part 6: Determination of liquid tightness Bouchons cylindriques en lige Essais physiques Partie 6: Dtermination de ltanchit aux liquides BS ISO 9727-6:2007ii iii Foreword ISO (
5、the 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 commi
6、ttee 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 electrotec
7、hnical 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 membe
8、r bodies 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 identifyin
9、g any or all such patent rights. ISO 9727-6 was prepared by Technical Committee ISO/TC 87, Cork. This first edition of ISO 9727-6, together with the other parts of ISO 9727:2007, cancels and replaces ISO 9727:1991, which has been technically revised. ISO 9727 consists of the following parts, under t
10、he general title Cylindrical cork stoppers Physical tests: Part 1: Determination of dimensions Part 2: Determination of mass and apparent density for agglomerated cork stoppers Part 3: Determination of humidity content Part 4: Determination of dimensional recovery after compression Part 5: Determina
11、tion of extraction force Part 6: Determination of liquid tightness Part 7: Determination of dust content BS ISO 9727-6:2007 blank1 Cylindrical cork stoppers Physical tests Part 6: Determination of liquid tightness 1 Scope This part of ISO 9727 specifies a test method for determining the liquid tight
12、ness of a cylindrical cork stopper. It is applicable to all types of cylindrical cork stoppers ready for use, intended to be completely inserted in the bottle neck (straight cork stoppers). 2 Normative references The following referenced documents are indispensable for the application of this docume
13、nt. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 633, Cork Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 633 and the f
14、ollowing apply. 3.1 straight cork stopper ras de bague stopper which is completely introduced in the bottle neck, its superior end reaching the top border of the bottle 4 Materials 4.1 Acetone, for cleaning the glass tubes. 4.2 Hydro-alcoholic solution, 10 %, coloured with methylene blue. 5 Apparatu
15、s 5.1 Bottling machine with 4 jaws, with a jaw-compression diameter regulated between 15,5 mm and 16 mm. 5.2 Glass tubes, with an internal diameter of 18,5 mm 0,2 mm or an internal diameter of (d 0,2) mm (where d is the bore diameter of the bottle intended to be used, measured at 3 mm from the top o
16、f the bottle finishing). 5.3 Pressurization device, having a graduated manometer with a resolution of 0,1 bar, or any other appropriate device to measure pressure. BS ISO 9727-6:20072 6 Test conditions 6.1 Environment The test shall be carried out in an environment with the following characteristics
17、: temperature 21 C 4 C; relative humidity of air 60 % 20 %. 6.2 Cork stoppers 6.2.1 Temperature At the beginning of the test, confirm that the stoppers of the test sample are at a temperature of 21 C 4 C. 6.2.2 Humidity At the beginning of the test, confirm that the stoppers of the test sample are a
18、t a humidity of 6 % 2 %. If the humidity is not between 4 % and 8 %, the result of the humidity obtained shall be referred to in the test report. 7 Sampling From each lot, take the quantity of stoppers that correspond to the sampling plan previously agreed between the interested parties. 8 Procedure
19、 8.1 Corkage Clean the glass tubes (5.2) with acetone (4.1) and let them dry. Using the bottling machine (5.1), put corks on the tubes (5.2). Wait 1 h and then turn the tubes upside down and introduce 3 ml to 5 ml of hydro-alcoholic solution (4.2) into each tube. Place the tubes on the pressurizatio
20、n device (5.3) with a piece of filter paper under each tube, contacting the cork stopper. 8.2 Pressure-raising kinetics One hour after corkage, raise pressure up to 0,3 bar, wait 10 min and observe: raise pressure by another step of 0,3 bar (until 0,6 bar), wait 10 min and observe; raise pressure by
21、 another step of 0,3 bar (until 0,9 bar), wait 10 min and observe; raise pressure by another step of 0,3 bar (until 1,2 bar), wait 10 min and observe; raise pressure by another step of 0,3 bar (until 1,5 bar), wait 10 min and observe. Leakage is detected at each step, observing stains of the coloure
22、d solution on the filter paper contacting the cork stopper. Register the identification of each concerned stopper and the corresponding internal pressure. BS ISO 9727-6:20073 9 Results If leakage is observed, the result is the number of cork stoppers that leak, and the corresponding minimum pressure
23、 that produced leakage on each of those cork stoppers. 10 Test report The test report shall include the following information: a) a reference to this part of ISO 9727, referring to the type of support used (glass tube), as well as its dimensional characteristics; b) complete identification of the sa
24、mple, including its type and origin; c) sampling report; d) results obtained; e) any deviation from this part of ISO 9727 that may have affected the results. BS ISO 9727-6:2007BS ISO 9727-6:2007 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent nationa
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