Disclosure to Promote the Right To Information

Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 1994 (1987): Crown Closures [MTD 32: Metal Containers]

IS:1994-1987

Indian Standard SPECIFICATION FOR CROWN CLOSURES

( Second Revision )

Metal Containers Sectional Committee, MCPD

Chairman Representing

SHRI A. C. PURI Metal Box India Ltd, Calcutta

Members

SHRI J. S. NARUL+ ( Alternate to -. - -

12

Shri A.~C. Purr) SHRI B. S. R. AN~ANEYULU Hindustan Petroleum Corporation Ltd, Bombay

SHRI R. D. KALE ( Alternate ) SHRI V. C. BHARGAVA Directorate of Plant Protection, Quarantine

and Storage, Faridabad SHRI S. K. GHOSH ( Alternate )

SHRI D. M. BHAT Tri-sure India Ltd, Bombay SHRI MOHAN MENON ( Alternate )

SHRI SANJAY RHATIA Hindustan Tin Works Pvt Ltd. Ghaziabad Strnt J. B. KAPIL ( Alternate )

SHRI M. K. DAY M. L. Day and Company Pvt Ltd, Calcutta SHRI U. R. SHOME ( Alternate )

SHRI M. L. DAY Day Drums Industries, Calcutta SHRI P. L. DAY ( Alternate)

SHRI SAMruL HAQUE Directorate of Weights and Measures ( Ministry of Food and Civil Supplies ), New Delhi

Sum N. S. PANGTEY ( Alternate ) SHRI A. K. HAZRA Indian Aiuminium Company Ltd, Calcutta

SHRI P. CHAKRAVORTY ( Alternate ) SHRI N. C. JAIN Ministry of Defence ( DGI I

Lr-Car> K. R. DHARMADHIKARY ( Alternate ) SERI P. D. KATRAK Zenith Tin Works Ltd, Bombay

SHRT A. S. GABULA ( Alternate ) SHRr M. M. 1,. KHULLAR Tinoiate Company of India, Calcutta

SHRI P. K. BANERJEE (Alternate J . _

SHRI U. D. LAAD Poysha Industrial Company Ltd. Bombay SHRI V. J. PRAKASH ( Alternate )

( Continued on pug? 2 )

@ Copyright 1988 BUREAU OF INDIAN STANDARDS

This publication is protected under the Indian Copyrigh? Act (XIV of 1957 ) and reproduction in whole or in part by any means except with written permission ofthe publisher shall be deemed to be an infringement of copyright under the said Act.

IS:1994 -1987

( Continued from page 1 )

Members Representing

DR H. MUKHERJEE Department of Explosives, Nagpur SHRI A. S. GHOSHAL ( Alternafe I ) SHRI S. K. BHARGAVA ( Alternate II )

SHRI P. V. NARAYANAN Indian Institute of Packaging, Bombay SHRI K. B. GUPTA ( Alternate )

SHRI M. B. RAMGADIA Indian Oil Corporation Ltd. Bombay

SHRI T. S. VISWANATHAN ( Alternate )

SHRI D. S. RATHORE All India Food Preserver’s Association ( Regd ): New Delhi

SHRI H. C. LAL ( Alternate ) Z&SRI M. K. SAHANI Directorate of Vanaspati, Vegetable Oils and

Fats (Ministry of Food and Civil Supplies), New Delhi

DR I. A. SIDDIQI ( Alternate ) SHRI G. K. SOOD VanaspBa;Lyayfacturers Association of India,

SHRI K. S. SINGH Steel Authority of India Ltd, New Delhi SHRI B. MAHAPATRA ( Alternate )

SHRI KULWANT SINGH Directorate General of Technical Development, New Delhi

SHRI V. N. S. MANIAN ( Alternate ) SHRI P. D. VASHIST Directorate of Marketing and Inspection

( Ministry of Rural Development ), Faridabad

SHRI R. J. VERMA ( Alternate ) SHRI B. L. RAINA, Director General, BIS ( Ex-officio Member )

Director ( MCPD )

Secretary SHRI A. R. GULATI

Joint Director (MCPD ), BIS

2

IS :1994 - 1987

Indian Standard

SPECIFICATION FOR CROWN CLOSURES

( Second Revision )

0. FOREWORD

0.1 This Indian Standard (Second Revision) was adopted by the Bureau of Indian Standards on 2 April 1987, after the draft finaliped by the Metal Containers Sectional Committee had been approved by the Marine, Cargo Movement and Packaging Division Council.

0.2 This standard was first published in 1961 and had undergone the first revision in 1971. Since then there have been further technological changes in the material specifications and manufacture of crow~n closures ( for exampie, introduction of intermediate skirt crown, and use of tin free steel for crown manufacture). In this revision intermediate skirt type crown closures and the use of tin free steel ( TFS >, and moulded plastisol lined crowns have been included.

0.3 Crown closures are widely used as closures for glass bottles containing aerated and non-aerated drinks. The dimensions and tolerances of crown closures are closely related to those of the neck finishes of these bottles. The requirements of bottles of crown closure pattern are prescribed in IS : 1107-1974*.

0.4 This standard contains clauses 3.3.4 and 3.5 which call for an agreement between the purchaser and the supplier, and which permit the purchaser to use his option for selection to suit his requirements.

0.5 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1960.1. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

*Specification for aerated water glass bottles, crown cork type (first revision ).

tRules for rounding off numerical values ( revised).

3

IS:1994-1987

1. SCOPE

1.1 This standard prescribes the requirements and methods of tests for the standard and intermediate types of crown closures used on glass bottles.

2. TERMINOLOGY

2.1 For the purpose of this standard, definitions given in IS : 1394-1984* shall apply.

3. REQUIREMENTS

3.1 Dimensions and Tolerances

3.1.1 The standard and intermediate skirt crown shells shall be manufactured tO the dimensions and tolerances shown in Fig. 1. The overall height and diameter of the closures shall be checked with gauge shown in Fig. 2.

3.1.2 Cork Disc Dimensions - The thickness of cork disc and the diameter of spotting material used in spotted crown shall conform to the dimensions prescribed in Fig. 3.

3.1.3 Compound gasket film weight to be applied, may vary with the type of compound used. The gasket film spread shall be such that the lined crowns shall pass the test specified under 4.2.

3.2 Materials

3.2.1 The crown shell shall be made from tinplate of nominal thick- ness of 0’25 mm and temper grade of T4. Tolerance allowed on the thickness and temper shall be according to IS : 1993-19821. Alter- natively, tin free steel plate or blackplate of 0’25 mm nominal thickness in T4 temper may be used as agreed to between the supplier and the purchaser.

3.2.2 The cork disc when used shall be made from natural or composition cork. The natural cork shall be either straight natural or latex coated. The composition cork disc shall be made with refined food grade gelatine or food grade resin binder. The cork granules in the composition disc shall be from grinding or milling cork and shall be free from hard back. The disc shall be free from pits and pinholes and shall not impart off-flavourto the contents.

*Glossary of terms relating to metal containers ( third revision ). tspecification for cdld-reduced tinplate and cold-reduced blackplate (second

revision ).

4

IS : 1994 - 19817

R 130 TO

SECTION X X

21 CORRUGATIONS

I--_-- @32&0.3---j

TYPO *A’

Standard skirt crown shell 6.70 f 0.20 -----

Intermediate skirt crown shell 5.95 f 0.20

All dimensions in millimeties.

FIG. 1 DIMENSIONS OF STANDARD AND INTERMEDIATE TYPE CROWN SHELLS

5

L8 THICK PLATE

We Dimensions

‘A’ GO b&O

Standard skirt crown shell 6.89 - 6.87 6.50 - 6.48

Intermediate skirt crown shell 6.14 - 6’12 I 5.15 - 5.13

All dimensions in millimetres.

FIG. 2 OUTSIDE DIAMETER AND HEIGHT CHECKING GAUGE

6

IS : 1994 5 1987

Type Thickness Diameter

Ct) CD) mm mm

Diameter (4 mm

Unspotted

Spotted

2.3 - 2.8 26.5 - 27.0 1 - 1

2.6 - 3.1 26’5 - 27.0 !

21-45 - 21-50

FIG. 3 UNSPOTTED CORK DISC/SPOTTED CORK DISC

3.2.3 For satisfactory assembly and to avoid excessive sweating in the assembled crowns, it is recommended that the initial moisture content of the composite cork should be within 4 to 6 percent.

3.2.4 The adhesive used for binding the cork disc to the crown shall be of non-toxic quality.

3.2.5 The adhesive used for bonding the composition cork shall be of non-toxic quality.

3.2.6 The composition cork disc shall contain a mould inhibitor approved for use in food products.

3.2.7 The lining compound ( PVC plastisol or PVC dry blend ), if used, shall be non-toxic and shall not impart any preceptible odour to the contents.

3.3 Manufacture

3.3.1 The crown shell shall be manufactured from tinplate or tin frea steel plate as prescribed under 3.2.1 and shall conform to dimension4 prescribed under 3.1.1.

3.3.2 Standard type crown shell shall be lined with cork or spun or moulded PVC plastisol compound.

3.3.3 Intermediate type crown shell shall be lined with spun or moulded PVC plastisol compound only.

7

IS:1994-1987

3.3.4 In case of cork lined standard crown-shell, the cork liner may be faced with a suitable spotting material like vinylite aluminium foil, etc, if required by the purchaser.

3.3.5 The adhesive used for bonding the spotting material to the cork disc shall be of hot melt type and shall be of non-toxic quality.

3.3.6 The cork disc or PVC gasket shall firmly adhere to the shell SO that it cannot be removed in one piece.

3.4 Internal Finish - The inside surface of the crown shall be given a suitable protective coating of lacquer of non-toxic quality. In case of PVC plastisol lined crowns, an adhesive type of lacquer shall be used. Adhesion between lacquer and compound shall be such that the liner disc does not fall or displace from the shell during transportation or during crimping.

3.5 External Finish - The outside surface of the crown shall be given a protective and decorative finish including print as agreed to between the purchaser and the supplier. The finish shall be such that the crowns flow in chutes of high speed bottling machines without frequent interruption.

4. PERFORMANCE TESTS

4.1 The gelatine composition cork disc, when subjected to a boiling test in water for one hour, shall not show any sign of disintegration.

4.2 The crowns shall not show leakage below 6’5 kg/cm2, -when tested according to the method described in Appendix A.

5. SAMPLING

5.1 Representative samples of the crown closures shall be taken for tests in accordance with IS : 6941-1973*.

6. MARKING

6.1 The manufacturer’s name, initials or recognized trade-mark shall be clearly and indelibly marked on the crown shell skirt as agreed to between the purchaser and the supplier.

*Methods for sampling metal closures.

8

c

IS : 1994 - 1987

6.1.1 The crown shells may also be marked with the Standard Mark.

NOTE - The use of the Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made there- under. The Standard Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well defined system of inspection, testing and quality control which is devised and supervised by BIS and operated by the producer. Standard marked products are also continuously checked by BIS for conformity to that standard as a further safeguard. Details of conditions under which a licence for the use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards.

APPENDIX A ( Clause 4.2 )

PERFORMANCE TESTS

A-l. AIR PRESSURE TEST

A-P.1 A dummy ~bottle top made of mild steel shall be used for this test. The bottle neck shall be manufactured to the nominal dimensions given in IS : 1107-1974*. The dummy shall be fitted with a non-return air valve and a pressure gauge as shown in Fig. 4. The crown closure shall be crimped on the dummy and the uniformity of the sealing shall be examined by using a ‘GO’ and ‘NO GO’ ring gauge as shown in Fig. 5. A crown closure found improperly sealed shall not be used ‘for the purpose of this test. An air-pressure up to 6’5 kg/cm” as read on the pressure gauge shall be pumped in through the non-return air valve. The bottle shall now be immersed in water for a period of 15 seconds and there shall be no leakage of air.

*Specification for aerated water glass bottles crown cork type (first revision ).

9

IS :1994- 1987

PRESSURE GAUGE -

FIG. 4 DUMMY BOTTLE TOP FOR AIR PRESSURE TEST

10

IS : 1994 - 1987

‘NO GO’

All dimensions in millimetres.

FIG. 53 RING GAUGE FOR CRIMPED CROWN CLOSURE

11

INTERNATIONAL SYSTEM OF UNITS ( SI UNITS )

Base Units

Quantity

-Length

Mass

Time

Electric current

Thermodynamic temperature

Luminous intensity

Amount of substance

Supplementary Units

Quantity

Plane angle

Solid angle

Derived Units

Quantity

Force

Energy

Power

Flux

Flux density

Frequency

Electric conductance

Electromotive force

Pressure, stress

Unit

metre

kilogram

second

ampere

kelvin

candela

mole

Unit

radian

steradian

Unit

newton

joule

watt

weber

tesla

hertz

siemens

volt

Pascal

Symbol

m

kg

S

A

K

cd

mol

Symbol

rad

sr

Symbol

N

J

W

Wb

T

HZ

S

V

Pa

Dejnition

1N = 1 kg,m/sa

1J = 1 N.m

1w = 1 J/s

1 Wb = 1 v.s

1T = 1 Wb/me

1 Hz = 1 c/s(s-‘)

1s = 1 A/V

1v = 1 W/A

1 Pa = 1 N/m2