1、BRITISH STANDARD Light gauge metal containers - Definitions and determination of dimensions and capacities - Part 1: Open-top cans The European Standard EN IS0 90-1:1999 has the status of a British Standad ICs 55.120 BS EN IS0 90-1: 1999 m m 9 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY
2、 COPYRIGH LAW National foreword direction of the Consumer Products and Services Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 1999 Amd. No. O BSI 09-1999 This British Standard is the English language version of EN IS0 90-1: 1999.
3、 It is identical with IS0 gel: 1997. It supersedes BS EN 200W1: 1993 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee PIWE, Primary packaging, to Subcommittee PKWiV2, Metai packaging, which has the responsibility to: Date Comments - aid enquirers to un
4、derstand the text; - present to the responsible intermtionaJEuropean committee any enquiries on the inteqwetation, or proposals for change, and keep the UK interests infonned; - monitor related international and European developments and promulgate them in the UK. A list of organizations represented
5、 on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists nonnative references to jnternationa publications with their corresponding European publications. The British Standa
6、rds which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “Intedod Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include
7、aii the necessary 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 fi-ont cover, an inside front cover, the EN I
8、S0 titie page, the EN IS0 foreword page, the IS0 title page, pages i to iv, pages 1 to 17 and a back cover. The BSI copyright notice displayed in his document indicates when the document was last issued. STD-BSI BS EN IS0 YO-1-ENGL L979 Lh24h69 0772995 284 111 EUROPEAN STANDARD EN IS0 a1 NORME EUROP
9、ENNE EUROPISCHE NORM June 1999 ICs 55.120 Supersedes EN 20090-1 :1992 English version Light gauge metal containers - Definitions and determination of dimensions and capacities - Part 1: Open-top cans (IS0 90- 1 : 1 997) Rcipients mtalliques lgers - finitions et dtermination des dimensions et des cap
10、acits - Pame 1 : Botes serties (IS0 90-1:1997) Verpackungen aus Feinstblech - egrife und Verfahren zur Bestimmung von Abmessungen und Volumen - Teil 1: Falzdeckeldosen (IC0 90-1:1997) This European standerd was approved by CEN on 5 May 1999. CEN members are bound to comply with the CEWENELEC Interna
11、i Regulations which stipulate the condlons for gMng this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographicai references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This
12、 European Standard exists in three offmai versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notffied to the Centrai Secretariat has the same status as the offidal versions. CEN members are the na
13、tional standards bodies of Austria, Belgium, Czech Republic, Denmark, Finiand, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Nomy, Portugal, Spain, Sweden, Switzerland and United Kingdom. EURO“ COMMiITEE FOR STANARDEATiON COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMI
14、TEE FOR NORMUNG Central Secretariat: rue de Stasrirt, 36 8-1050 BNU.18 (o 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN IS0 9-1:1999 E Foreword The text of the Intemational Standard from Technical Committee ISO/TC 52 “Light
15、gauge metal containers“ of the International Organization for Standardization (SO) has been taken over as an European Standard by Technical Committee CEMC 261 “Packaging“, the secretariat of which is held by AFNOR. This European Standard replaces EN 20090-1:1992. This European Standard shall be give
16、n the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 1999, and conflicting national standards shall be withdrawn at the latest by December 1999. According to the CEWCENELEC Internal Regulations, the national standards organizati
17、ons of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Rnland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text
18、 of the International Standard IS0 90-1:1997 as been approved by CEN as a European Standard without any modification. INTERNATIONAL STANDARD IS0 90-1 Second edition 1997-07-01 Light gauge metal containers - Definitions and determination of dimensions and capacities - Part 1: Open-top cans Rcipients
19、mtalliques lgers - DBfinitbns et d8tennnatiOn des dimensions et des capacit in all other cases, round down). 3.3 Measurement of height See annex A. 3.4 Characteristic dimensions Nominal cross-sections are characterized by the dimensions specified in 3.4.1 to 3.4.4. 3.4.1 Cylindrical round can Dimens
20、ion D (see figure 1). 3.4.2 Cylindrical non-round can Dimensions A and B (see figures 2 to 5). 3.4.3 Tapered round can Dimensions D1 and 4, of which Dl is the larger and 4 the smaller (see figure 13). 3.4.4 Tapered non-round can Dimensions Al, 51, A2 and S, of which Al and 31 are the larger and A2 a
21、nd S, the smaller dimensions (see figure 13). 3.5 Special features 3.5.1 Necked-in cans The cross-sections in the necked-in area shall be indicated as follows (see clause 6 and figure 13): - for round cans: - top end; Am x 42 - bottom end. 7 STD-BSI BS EN IS0 90-1-ENGL L999 9 Lb24669 0793008 530 = E
22、N IS0 90-1:1999 3.59 Step-sickd cans The cross-sections in the step-sided area shall be indicated as follows (see clause 6 and figure 13): - roundcans: 0s; - non-round cans: x ! Figure 13 - (end) 4 Determination of gross lidded capacity, C 4.1 General The methods for determining capacity all rely on
23、 determining the mass of water in the can. For cans with a capacity equal to or greater than 400 ml, a correction factor (see 4.1.1) can be applied, but only if a very precise determination of capacity is necessary. 4.1.1 Correction factors The correction factor to be applied to determine the gross
24、lidded capacity depends on the water temperature (see table 1). 4.1.2 Accuracy of the balances The balance used for determining the mass, m, of the cans shall have at least the accuracy specified in table 2. 9 STD*BSI BS EN IS0 70-1-ENGL 1779 W Lb24bb7 0773030 179 EN IS0 90-1:1999 G of can, m Accura
25、cy m4500 f 0,5 f l,o 2500mc5000 f 2,5 5000m f5,O 500 m s 2 500 Water temperature “C 12 14 16 18 20 22 24 26 28 30 Correction factor F 1,OOO 5 1,0008 1,001 1 1,001 4 1,001 8 1,002 2 1,002 7 1,003 3 1,003 8 1.0044 Table 2 - Balance accuracy Values in grams 4.1.3 Cans with flexible top and bottom ends
26、The development of containers in thin materials has in some cases led to the introduction of tophottom ends with intentional flexibility. These ends are produced in convex shape; after sterilization and cooling, the bow changes to concave similar to other open-top can ends. These ends are used for c
27、ans on which the body would collapse due to the vacuum produced as a result of hot filling, irrespective of whether they are beaded or not. On account of the changing bow of the ends, the container has no absolute fixed capacity. Since there is no acceptable method for measuring the capacity of cans
28、 with such flexible ends, this capacity has to be considered as equal to the capacity of similar cans with non-flexible ends. 4.2 Determination of gross lidded capacity, C (empty cans) NOTE - The gross lidded capacity is normally determined on empty cans. If the capacity of filled cans has to be det
29、ermined, the method described in annex B can be applied. 4.2.1 For three-piece cans only, attach one end to the body by the usual method. 4.2.2 From the inside surface outwards, drill two holes, 3 mm to 6 mm in diameter and about 7 mm apart, in the unattached end of the can (the positioning of the h
30、oles depends on the end profile). In non-round ends, drill the holes as close as possible to a comer radius. 4.2.3 Attach this end to the body by the usual method. 4.2.4 Determine the mass of the empty can, m1, in grams, accurately (refer to 4.1.2). 4.2.5 If necessary, measure the temperature of the
31、 water to be used (see 4.1.1). 10 4.2.6 Fill the can with water through one of the holes, with the can inclined at an angle to the vertical so that the holes are as high as possible. When water runs out of the second hole, close the holes with the fingers, shake the can gently, and complete filling.
32、 4.2.7 If the above filling method results in deformation of the can, proceed as follows. Place the can in a test container filled with water, with the can inclined at an angle to the vertical so that the holes are as high as possible. Fill the can completely with water through one of the holes. The
33、 water in the test container shall be not more than 10 mm below the highest point of the can. Close the holes with small strips of adhesive tape. Remove the can from the container. 49.8 Remove any surplus water from the outside of the can. 4.2.9 Determine the mass of the filled can, m, in grams, acc
34、urately (see 4.1.2). 4.2.10 The difference between the weighings (e - ml), if necessary multiplied by the relevant water temperature correction factor (see 4.1 .1), represents the gross lidded capacity, C, in millilitres, of the can. 5 Tolerances on capacities 5.1 General Tolerances for standardized
35、 nominal gross lidded capacities are given in tables 3 and 4. At least 99,7 % of the individual cans shall lie within these limitsl). 5.2 Round cans Tolerances on gross lidded capacities for round cans are given in table 3. Table 3 - Tolerances on gross lidded capacities for round cans Gross lidded
36、capacity, C I ml Cc 80 80sCs 100 101 a Ca 150 151sCs 200 201 d Cd 266 321 d Ca 520 267s C9 320 521 d Cd 650 651 CS1000 1 O01 a Ca 1 334 1335aCs2000 2001C3000 3000cc % Tolerances 15 i4 f3 f 2,5 t2 f 1,5 I1 ml f4 I6 f8 f 13 f 20 f 30 1) This percentage is derived from statistical theory: when a variab
37、le, x, is distributed according to the normal distribution of parameters p and u (where p is the arithmetic mean and Q is the standard deviation), 99,7 % of its values are between (p - 3oj and (p + 34. 11 STD=BSI BS EN IS0 90-L-ENGL 1999 1624669 I3793012 TD1 EN IS0 9O-1:1999 G C 150 151 d Cd200 201C
38、C266 267 d CG 320 321 Q Cc 520 521 Q CB 650 650cC 5.3 Non-round cans Tolerances on gross lidded capacities for non-round cans are given in table 4. TaMe 4 - Toierancem on gross lidded capacities for non-round cans Tokmncem % ml f5 f4 f4 f6 f3 i8 f 2,5 f 13 f2 6 Designation It is recommended that ope
39、n-top cans be designated internationally in the following manner: a) acodeletter: Cy for cylindrical cans; T for tapered cans; S for step-sided cans; N for necked-in cans; D for diaphragmed cans. b) their nominal gross lidded capacity, C, or their nominal filling volume, V, expressed in millilitres;
40、 c) their characteristic nominal cross-section, expressed in millimetres, in accordance with 3.1 and 3.2; d) the nominal cross-section of the end of the body for necked-in or step-sided cans in accordance with 3.5, placed immediately ater the body dimensions. Examples of designation are given in fig
41、ure 13. 12 Annex A (informative) Measurement of height of open-top cans In clause 6, it is recommended that open-top cans be designated internationally in the following manner: a) a code letter; b) their nominal gross lidded capacity or nominal filling volume; c) their nominal cross-section. However
42、, it may be necessary to refer to the can body height (see 2.6.5). The height, HI, (see figure A.l) shall be measured using a vernier caliper or a height gauge. c ! I I I i i i i i i I _s_ue ai Three-plecc can ! I l l Two-plccc can Figure A.l - Measurement of body height of open-top cans The body he
43、ight, HI, shall be expressed by rounding to the nearest whole millimetre (if the first decimal is 5 or above, round up; in all other cases, round down). 13 Annex B (informative) Determination of gross lidded capacity, C (cans filled with product) 8.1 Apparatus 8.1.1 Toploading balance see figure 6.1
44、 a). The double-pan torsion type of balance is not an acceptable substitute. 8.1.2 Water tank, whose level and contents are adjustable. The tank should be large enough to hold a submerged can without overflowing. 8.2 Preparation B.2.1 The can to be tested shall be free from dents or buckles. 8.2.2 F
45、ill the tank (8.1.2) to the desired level with water. 8.2.3 Measure the temperature of the water if a correction factor is to be applied (see 4.1.1). 8.2.4 Zero the balance with the water level adjusted to the mark on the can holder, by means of a small weight, S, set on the balance pan see figure 8
46、.1 b) and which will stay on it during subsequent operations. 8.2.5 Vent the can to the atmosphere. It may be necessary to make a small hole to do this. Seal any such hole with adhesive tape. 8.3 Determination of the mass of filled can in air, mfa 8.3.1 Place the filled can on the balance pan. B.3.2
47、 Adjust the tank to bring the water level to the mark see figure B.l c). 8.3.3 Read the mass of the filled can, rnb, in grams, as accurately as the scale permits. 8.4 Determination of the mass of filled can in water, rnh 8.4.1 Attach the filled can to the magnet under water see figure 6.1 d). Avoid
48、trapping any air. NOTE - If the magnet does not hold the can, it will be necessary to bind the can to the magnet. In this case, start again at 8.2.4 with the binding on the magnet. 8.4.2 If the filled can floats in water, add weights B see figure 6.1 e), to the balance pan until a positive reading i
49、s seen on the scale. i4 - STD*BSI BS EN IS0 90-1-ENGL 1999 Lbtlibb 0793015 370 W EN IS0 90-1:1999 6.4.3 Adjust the tank to bring the wad level to the mark see figure B.l d) or B.l e). B.4.4 Read the mass, in grams, of the can on the scale. For cans which do not float in water, the reading is rnk. For cans which do float in water, rnk will have a value equal to the scale reading minus the mass of weights B. Note that in this latter case, rnk will be negative. 8.5 Determination of the mass of empty can in air, mea B.5.1 Open the ca
