1、BRITISH STANDARD BS7367:1991 Specification for Manufacture of glass bottles for carbonated soft drinks including carbonated waterBS7367:1991 This BritishStandard, having been prepared under the directionof the Packaging and Freight Containers Standards Policy Committee, was publishedunder the author
2、ity ofthe Board of BSI and comes intoeffect on 31January1991 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference PKM/563 Draft for comment89/38027 DC ISBN 0 580 19053 6 Committees responsible for this BritishStandard The preparation of this BritishStanda
3、rd was entrusted by the Packaging and Freight Containers Standards Policy Committee (PKM/-) to Technical Committee PKM/563, upon which the following bodies were represented: Association for Consumer Research (ACRE) Association of the British Pharmaceutical Industry Bee Farmers Association of Great B
4、ritain Brewers Society British Glass Manufacturers Confederation British Pharmacopoeia Commission British Plastics Federation British Soft Drinks Association Ltd. Campden Food and Drink Research Association Chemical Industries Association Child Accident Prevention Trust Consumer Policy Committee of
5、BSI Dairy Trade Federation Department of Health Department of Trade and Industry (Consumer Safety Unit, CA Division) Food and Drink Federation Honey Importers and Packers Association Institute of Trading Standards Administration Metal Packaging Manufacturers Association National Association of Cider
6、 Makers Retail Consortium Royal Society for the Prevention of Accidents Scotch Whisky Association Scottish Association of Soft Drinks Manufacturers Welsh Beekeepers Association Wine and Spirit Association of Great Britain Amendments issued since publication Amd. No. Date CommentsBS7367:1991 BSI 12-1
7、999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 General 1 4 Design head space 1 5 Internal pressure resistance 2 6 Thermal shock resistance 2 7 Resistance of bottles with cylindrical bodies to simulated stress 3 8 Annealing 3 9 Freedom from visib
8、le defects which affect strength 3 10 Records 3 11 Bottle markings 3 Appendix A Method of test for the determination of design head space 5 Appendix B Method of test for the determination of resistance to internalpressure 5 Appendix C Method of test for the determination of resistance to thermalshoc
9、k 6 Appendix D Method of test for the determination of resistance of bottles withcylindrical bodies to simulated stress 6 Figure 1 Example of appropriate refillability markings for refillable glassbottles for carbonated soft drinks including carbonated water 4 Table 1 Design headspace 2 Table 2 Inte
10、rnal pressure resistance 2 Publication(s) referred to Inside back coverBS7367:1991 ii BSI 12-1999 Foreword This BritishStandard has been prepared under the direction of the Packaging and Freight Containers Standards Policy Committee. It specifies requirements for the manufacture of glass bottles for
11、 carbonated soft drinks including carbonated water. Glass bottles of nominal capacity greater than1.15L are not recommended for packaging carbonated soft drinks or carbonated water. Glass bottles are not recommended for packaging soft drinks where carbonation pressures exceed4.7bar 1) , except in th
12、e case of refillable bottles with a nominal capacity no greater than180mL, where carbonation pressure up to5.3bar can be accommodated. In this standard design head space has been related to bottle capacity. Glass bottles with non-circular cross sections are not recommended for packaging carbonated s
13、oft drinks including carbonated water. By specifying the requirements for control of the bottle manufacturing process which establish compliance with this standard, this BritishStandard is intended to provide manufacturers, distributors, users and other interested groups with a basis for common unde
14、rstanding of the bottle manufacturing process control. There is no BritishStandard method of test for the determination of relative annealing strain in glass containers. However an appropriate ASTM test method exists. Use of the ASTM method has therefore been specified but the test method is not rep
15、roduced in the appendices. This BritishStandard calls for the use of test procedures that may be injurious tohealth if adequate precautions are not taken by the person doing the test. In particular, attention is drawn to hazards associated with the tests for internal pressure resistance and thermal
16、shock resistance. Compliance with this standard in no way absolves the user from statutory obligations relating to health and safety at any stage of manufacture or use. This BritishStandard is the outcome of initial work on criteria concerning safety aspects of glass containers for carbonated soft d
17、rinks. This work is continuing and it is anticipated that further BritishStandards concerning safety aspects of carbonated beverage containers will be developed. Parts1 and2 of the British Glass Manufacturers Confederation publication “Strength and performance standards for the manufacturer and use
18、of carbonated beverage bottles” contains information on bottle design and manufacturing controls. Additional background information can be found in “Packaging in glass” by B. Moody, revised edition1977, published by Hutchinson Benham, London. A British Standard does not purport to include all the ne
19、cessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages
20、1 to6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. 1) 1bar=10 5N/m 2 =100kPa.BS7367:1991 BSI 12-1999 1 1 Scope This BritishStandard specif
21、ies manufacturing requirements for design head space, internal pressure resistance, thermal shock resistance, resistance to simulated stress, annealing, freedom from visible defects and marking of glass bottles ofcircular cross section, which have a nominal capacity no greater than1.15L, for carbona
22、ted soft drinks including carbonated water, which have a carbonation pressure not exceeding4.7bar when measured a20 C. It also specifies manufacturing requirements for refillable glass bottles which have a nominal capacity no greater than180mL, for carbonated soft drinks that have a carbonation pres
23、sure greater than4.7bar but not exceeding5.3bar when measured at20 C. Methods of test for internal pressure resistance, thermal shock resistance, design head space and resistance to simulated stress are given in Appendix A to Appendix D. NOTEThe titles of the publications referred to in this standar
24、d are listed on the inside back cover. 2 Definitions For the purposes of this BritishStandard the following definitions apply. 2.1 carbonation pressure the gas pressure, created by the carbonation of the drink, measured at20 C in the head space by a pressure gauge inserted through the closure and ex
25、pressed in bars 2.2 fill height the distance from the top of the neck finish to the centre of the meniscus measured on the centreline ofthe bottle 2.3 internal pressure resistance the amount of internal pressure that the bottle can withstand for60s without breaking 2.4 refillable bottle a bottle des
26、igned to have strength characteristics appropriate for refilling 2.5 head space the space left unfilled when a bottle is filled to its specified fill height and expressed as capacity 2.6 vacuity head space expressed as a percentage of the nominalcapacity 2.7 shift a continuous period of eight hours
27、duration 2.8 surface treatment chemical treatments given to the external surface of a bottle during manufacture, i.e.before and after annealing, which reduces friction on contact and increases its resistance to abrasion 3 General NOTEThe performance of glass bottles is related to glass thickness and
28、 bottle design. It is recommended that glass bottles should comply with clause2.8 of “Strength and performance standards for the manufacture and use of carbonated beverage bottles”,1989 edition 2) . 3.1 All sections of bottles parallel to their bases shall be substantially circular. NOTEThis require
29、ment is to exclude bottles with non-circular cross sections, e.g.bottles with square, triangular, elliptical cross sections. 3.2 The external surface of bottles shall be surface treated so as to minimize the weakening effects of abrasion and there shall be no seizing or audible grinding of the glass
30、 surface when two bottles are rubbed together by hand. Every shift two bottles from the cold end of the annealing lehr shall be rubbed together. If as a result of this or additional testing seizing or audible grinding occurs, bottles from the annealing lehr shall be rejected or quarantined for surfa
31、ce re-treatment, and the condition causing seizing or audible grinding shall be identified and corrected. 3.3 Bottles shall not tip over when filled with water to the nominal capacity and stood on a plane inclined at12 to the horizontal. 4 Design head space 4.1 Design head space shall not exceed the
32、 relevant value given in Table 1 when determined in accordance with Appendix A. NOTEWherever possible smaller design headspaces should be used. 2) Published by the British Glass Manufacturers Confederation, Northumberland Road, Sheffield, S102UA.BS7367:1991 2 BSI 12-1999 4.2 Where the nominal capaci
33、ty of a bottle of greater than300mL lies between the capacities given in column1 of Table 1 the design headspace shall be determined by linear interpolation using the design headspace values for the two adjacent nominal capacities given in Table 1; the resultant calculated design headspace shall be
34、rounded up to the nearestmL. 4.3 The design head space of two bottles from each of the prototype moulds shall be determined in accordance with Appendix A. If the requirements of4.1 and4.2 are not met, appropriate corrective action shall be taken to correct the moulds such that the requirements of4.1
35、 and4.2 are met, before the balance of the mould equipment is completed. Table 1 Design headspace 5 Internal pressure resistance 5.1 The internal pressure resistance of bottles shall be as given in Table 2 when sampled and tested as follows. One bottle from each mould cavity on the glass forming mac
36、hine shall be tested, in accordance with Appendix B, every shift. If as a result of this or additional testing a bottle fails to comply with the relevant requirement in Table 2 then six consecutive bottles from the mould cavity concerned shall be tested immediately in accordance with Appendix B. If
37、one or more of these six bottles fails to comply with the relevant internal pressure resistance given in Table 2 then all bottles produced from the mould cavity concerned since the last satisfactory set of tests shall be put in quarantine, non-complying bottles of those in quarantine rejected, and t
38、he condition causing bottles not to meet the relevant internal pressure resistance given in Table 2 shall be identified and corrected. Table 2 Internal pressure resistance 5.2 Bottles manufactured to a minimum internal pressure resistance of10bar shall be non-refillable proprietary bottles of a dist
39、inctive shape associated with a particular soft drink or range of soft drinks. 5.3 Non-refillable bottles shall not be manufactured for the purpose of packaging soft drinks that exert a carbonation pressure greater than4.7bar on the bottle at20 C. 5.4 Refillable bottles with a nominal capacity great
40、er than180mL shall not be manufactured for the purpose of packaging soft drinks that exert a carbonation pressure greater than4.7bar on the bottle at20 C. NOTE 1Refillable bottles designed for a carbonation pressure of up to4.7bar or5.3bar can be used for soft drinks with a carbonation pressure of l
41、ess than3bar. NOTE 2Soft drinks requiring in-bottle pasteurization should have a carbonation pressure at20 C not exceeding3bar. 6 Thermal shock resistance 6.1 General Bottles shall resist, without breaking or cracking, the thermal shock imposed by a fall in temperature of42 C when sampled and tested
42、 in accordance with6.2 or6.3 as appropriate. 6.2 Non-refillable bottles Two bottles from each of the prototype moulds shall be tested in accordance with Appendix C. If as a result of this or additional testing a bottle fails to resist, without breaking or cracking, the thermal shock imposed by a fal
43、l in temperature of42 C then appropriate corrective action shall be taken to correct the moulds before the balance of mould equipment is completed. Nominal capacity Design headspace Bottles for unpasteurized soft drinks Bottles for pasteurized soft drinks mL3.0 to k 4.7 4.7 to k 5.3 bar 10 (see5.2)
44、14 (see5.3) bar (see note1) 16 17.5 (see5.4)BS7367:1991 BSI 12-1999 3 6.3 Refillable bottles One bottle from each mould cavity on the glass forming machine shall be tested, in accordance with Appendix C, every shift. If as a result of this or additional testing a bottle fails to resist, without brea
45、king or cracking, the thermal shock imposed by a fall in temperature of42 C then six consecutive bottles from the mould cavity concerned shall be tested immediately in accordance with Appendix C. If one or more of these six bottles breaks or cracks then all bottles produced from the mould cavity con
46、cerned since the last satisfactory set of tests shall be put in quarantine and non-complying bottles rejected. The condition causing bottles to break or crack when tested in accordance with Appendix C shall be identified and corrected. 7 Resistance of bottles with cylindrical bodies to simulated str
47、ess 7.1 Bottles with cylindrical bodies shall be passed through an on line impact stress simulator in accordance with Appendix D. 7.2 Bottles manufactured for the purpose of packaging soft drinks that exert a carbonation pressure greater than3bar shall resist a simulated stress of50N/cm roller lengt
48、h when tested in accordance with Appendix D. 7.3 Bottles manufactured for the purpose of packaging soft drinks that exert a carbonation pressure greater than4.7bar shall resist a simulated stress of75N/cm roller length when tested in accordance with Appendix D. 8 Annealing The temper number of bottl
49、es shall not exceed the numerical value4 when sampled and tested as follows. Every shift the temper number of one bottle from each side and from the centre of the annealing tunnel shall be determined in accordance with method A of ASTM C148 “Polariscopic examination of glass containers” or by an equivalent test method. If as a result of this or additional examination the temper number of a bottle exceeds the numerical value4, bottles from rows of bottles in the annealing lehr which contain bottles whose temper number exceeds the numerical value4, shall
