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1、 Reference number ISO 7458:2004(E) ISO 2004 INTERNATIONAL STANDARD ISO 7458 Second edition 2004-03-01 Glass containers Internal pressure resistance Test methods Rcipients en verre Rsistance la pression interne Mthodes dessai Copyright International Organization for Standardization Provided by IHS un
2、der license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 03:19:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7458:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be
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5、e is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
6、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 office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47
7、 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 03:19:57 MDTNo reproduction or networking permitt
8、ed without license from IHS -,-,- ISO 7458:2004(E) ISO 2004 All rights reserved iii Foreword ISO (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 thro
9、ugh ISO technical committees. Each member body interested in a subject for which a technical committee 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 collabor
10、ates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical 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 Standa
11、rds. Draft International Standards adopted by the technical committees are circulated to the member 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 t
12、his document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 7458 was prepared by the European Committee for Standardization (CEN) in collaboration with Technical Committee ISO/TC 63, Glass containers, in accordance with the A
13、greement on technical cooperation between ISO and CEN (Vienna Agreement). Throughout the text of this document, read “.this European Standard.“ to mean “.this International Standard.“. This second edition cancels and replaces the first edition (ISO 7458:1984), which has been technically revised. Cop
14、yright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 03:19:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7458:2004(E) iv ISO 2004 All rights reserved Contents page Fore
15、wordv 1Scope 1 2Sampling.1 3Test methods1 3.1Test medium.1 3.2Method A.1 3.2.1General1 3.2.2Apparatus .1 3.2.3Procedure .1 3.2.4Test report 2 3.3Method B.2 3.3.1General2 3.3.2Apparatus .2 3.3.3Procedure .3 3.3.4Test report 3 4Safety requirements 4 Copyright International Organization for Standardiza
16、tion Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 03:19:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7458:2004(E) ISO 2004 All rights reserved v Foreword This document (EN ISO 7458:2004) has been prepared by Techn
17、ical Committee CEN /TC 261, “Packaging“, the secretariat of which is held by AFNOR, in collaboration with Technical Committee ISO/TC 63 “Glass containers“. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the la
18、test by September 2004, and conflicting national standards shall be withdrawn at the latest by September 2004. Efficient packaging is of great importance for the distribution and the protection of goods and the environment. Insufficient or inappropriate packaging can lead to damage or wastage of the
19、 contents of the pack. This standard is part of a series of standards for “Glass containers - Test methods“: EN ISO 7458, Glass containers Internal pressure resistance Test methods (ISO 7458:2004) EN ISO 7459, Glass containers Thermal shock resistance and thermal shock endurance Test methods (ISO 74
20、59:2004) prEN ISO 8106, Glass containers Determination of capacity by gravimetric method Test method (ISO/FDIS 8106:2003) EN ISO 8113, Glass containers Resistance to vertical load Test method (ISO 8113:2004) EN 29008, Glass bottles Verticality Test method (ISO 9008:1991) EN 29009, Glass containers H
21、eight and non-parallelism of finish with reference to container base Test methods (ISO 9009:1991) EN 29885, Wide-mouth glass containers Deviation from flatness of top sealing surface Test methods (ISO 9885:1991) According to the CEN/CENELEC Internal Regulations, the national standards organizations
22、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, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, S
23、pain, Sweden, Switzerland and United Kingdom. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 03:19:57 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright Internat
24、ional Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 03:19:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7458:2004(E) ISO 2004 All rights reserved 1 1 Scope This European Standard spe
25、cifies two test methods for the determination of the internal pressure resistance of glass containers, Method A by application of uniform internal pressure for a predetermined period and Method B by application of internal pressure increasing at a predetermined constant rate. 2 Sampling The test sha
26、ll be performed on a predetermined number of containers. The containers used for the test shall not have been subjected to any other mechanical or thermal test which could affect their internal pressure resistance. 3 Test methods 3.1 Test medium The test medium is tap water. 3.2 Method A 3.2.1 Gener
27、al Application of uniform internal pressure for a predetermined period. 3.2.2 Apparatus The apparatus shall comply with the following principles: a) The container to be tested shall be held in such a manner that it is suspended by the finish. b) There shall be a resilient seal between the sealing su
28、rface and the pressure head in order to retain the pressurizing medium during the test. c) There shall be a means of applying fluid pressure to a predetermined level, at an initial rate of (10 2) bar s-1 = (1,0 0,2) MPa s-1 and of maintaining that pressure constant during the test. 3.2.3 Procedure 3
29、.2.3.1Fill the containers with water. NOTEWhere possible it is advisable that the difference in temperature between the container and the water is within the range of 5C to avoid the possibility of extra stress being introduced into the container prior to the test. 3.2.3.2 Use one of the following t
30、est procedures, depending on the purpose of the test: a) Pass test Apply the internal test pressure to the predetermined level and hold it constant for (60 2) s, or for a different period, provided that the apparatus has the means for correcting the pressure values to those which would be obtained f
31、or a 60 s test. b) Progressive test Continue the test described in a), by increasing the pressure in increments of 1 bar or 2 bar (0,1 MPa or 0,2 MPa), until 50 % or/and 100 % of containers are broken. NOTEIn some commercially available machines, increments are 1 bar for use up to 18 bar and 2 bar a
32、bove 18 bar. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 03:19:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7458:2004(E) 2 ISO 2004 All rights reserved 3.2
33、.4 Test report The test report shall include the following: a) reference to this European Standard, b) sample size and sampling method, c) number of containers from each mould included in the sample, d) type of test, i.e. pass test 3.2.3.2 a) or progressive test 3.2.3.2 b), e) test results: 1) for t
34、he pass test, in accordance with 3.2.3.2 a): the pressure used and the number of containers that failed in the test, with the respective pressures at which they failed 2) for the progressive test, in accordance with 3.2.3.2 b): the pressure at which first failure occurred and the number of container
35、s that failed at that pressure the pressure required to break the predetermined percentage of the sample, expressed to the nearest 0,1 bar (0,01 MPa), the mean breaking pressure and the standard deviation f) date of test, g) location, h) signature of responsible person. 3.3 Method B 3.3.1 General Ap
36、plication of internal pressure increasing at a predetermined constant rate. 3.3.2 Apparatus The apparatus shall comply with the following principles: a) The container to be tested shall be held in such a manner that it is suspended by the finish. b) There shall be a resilient seal between the sealin
37、g surface and the pressure head in order to retain the pressurizing medium during the test. c) There shall be a means of applying fluid pressure, increasing at a rate of (5,8 1) bar s-1 = (0,58 0,1) MPa s-1, until the container fails or a predetermined level is reached. The actual rate of increase o
38、f pressure shall be reproducible to 2 %. d) The apparatus shall include a means of indicating the pressure Ievel at which the container failed, or the maximum pressure reached during the test. e) The apparatus shall include a means of indicating the relationship between the constant rate and fixed d
39、uration test. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 03:19:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7458:2004(E) ISO 2004 All rights reserved 3 EX
40、AMPLEIn case of the “Ramp Pressure Test“ apparatus, the relationship between the actual pressure and the 60 s pressure is given by KPP 60R += 38, 1(1) Where PR is the actual pressure P60is the “Sixty Second (60 s)“ pressure (see 3.2.3.2a) K= 0,1783 (pressure measured in MPa) = 1,783 (pressure measur
41、ed in bar) = 25,9 (pressure measured in psi) 3.3.3 Procedure 3.3.3.1Fill the containers with water. NOTEWhere possible it is advisable that the difference in temperature between the container and the water is within the range of 5C to avoid the possibility of extra stress being introduced into the c
42、ontainer prior to the test. 3.3.3.2Use one of the following test procedures, depending on the purpose of the test: a) Pass test lncrease the internal test pressure at a rate of (5,8 1) bar s-1 = (0,58 0,1) MPa s-1, until a predetermined level of pressure has been reached. b) Test to destruction Incr
43、ease the internal test pressure at a rate of (5,8 1) bar s-1 = (0,58 0,1) MPa s-1 until each container breaks. 3.3.4 Test report The test report shall include the following: a) reference to this European Standard, b) sample size and sampling method, c) number of containers from each mould included i
44、n the sample, d) type of test, i.e. pass test 3.3.3.2 a) or test to destruction 3.3.3.2 b), e) test results: 1) for the pass test, in accordance with 3.3.3.2 a): 60 s pressure and the number of containers that failed in the test, with the respective pressures at which they failed 2) for the test to
45、destruction, in accordance with 3.3.3.2 b): 60 s pressure at which first failure occurred and the number of containers that failed at that pressure Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007
46、 03:19:57 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 7458:2004(E) 4 ISO 2004 All rights reserved 60 s pressure required to break the predetermined percentage of the sample, expressed to the nearest of 0,1 bar = 0,01 MPa the mean breaking pressure and the standard d
47、eviation f) date of test, g) location, h) signature of responsible person. 4 Safety requirements This test procedure may be injurious to health if adequate precautions are not taken by the operator. Tests should be carried out in a safe manner as recommended. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 03:19:57 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licens
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