DRAFT UGANDA STANDARD  
      DUS1663 -1 
First Edition  
2017 -01-19 
 
 
 Reference number  
DUS  1663 -1: 2017 
© UNBS 2017   
  
Aluminium and Aluminium Alloy s — Part 1: Bare f oil for Food 
Packaging — Specification  
 DUS  1663 -1: 2017  
ii © UNBS 2017  – All rights reserved  
 Compliance with this standard does not, of itself confer immunity from legal obligations  
A Uganda Standard does not purport to include all necessary provisions of a c ontract. Users are 
responsible for its correct application  
© UNBS 20 15  
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
form or by any means, electronic or mechanical, including photocopying  and microfilm, without prior written 
permission from UNBS.  
Requests for permission to reproduce this document should be addressed to  
The Executive Director  
Uganda National Bureau of Standards  
P.O. Box 6329  
Kampala  
Uganda  
Tel: 256 41 4 505 995  
Fax: 256 41 4 286 123  
E-mail: info@unbs.go.ug  
Web: www.unbs.go.ug  DUS  1663 -1:2017  
© UNBS 2017  – All rights reserved  iii 
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ............................  iv 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 
2 Normative references  ................................ ................................ ................................ ............................  1 
3 Terms and definitions  ................................ ................................ ................................ ...........................  1 
4 Manufacture  ................................ ................................ ............................... Error! Bookmark not defined.  
5 Pinhole Count  ................................ ................................ ................................ ................................ ........  2 
6 Freedom from Defects  ................................ ................................ ................................ ..........................  2 
7 Material  ................................ ................................ ................................ ................................ ...................  2 
8 Supply of Material  ................................ ................................ ................................ ................................ .. 2 
9 Lubricants  ................................ ................................ ................................ ................................ ..............  3 
10 Preferred Thicknesses  ................................ ................................ ................................ ..........................  3 
11 Average Thickness  ................................ ................................ ................................ ................................  3 
12 Dimensions and Tolerances  ................................ ................................ ................................ .................  4 
13 Tensile Properties  ................................ ................................ ................................ ................................ . 4 
13.2  Number of Tests  ................................ ................................ ................................ ................................ .... 5 
13.3  Test Specimens  ................................ ................................ ................................ ................................ ..... 5 
14 Surface Condition  ................................ ................................ ................................ ................................ .. 5 
14.2  Dry Annealed, A  ................................ ................................ ................................ ................................ ..... 6 
14.3  Dry Annealed, B  ................................ ................................ ................................ ................................ ..... 6 
14.4  Dry Annealed, C  ................................ ................................ ................................ ................................ ..... 6 
14.5  Slick Annealed  ................................ ................................ ................................ ................................ ....... 6 
15 Sampling  ................................ ................................ ................................ ................................ ................  6 
15.3  Number of Tests for Tensile Properties  ................................ ................................ ..............................  7 
15.3.4  Re-test................................ ................................ ................................ ................................ .....................  7 
15.4  Criteria for Conformity  ................................ ................................ ................................ ..........................  7 
16 Ordering Information  ................................ ................................ ................................ .............................  7 
17 Marking  ................................ ................................ ................................ .......Error! Bookmark not defined.  
Bibliography  ................................ ................................ ................................ ................................ ........................  8 
 DUS  1663 -1: 2017  
iv © UNBS 2017  – All rights reserved  
 Foreword  
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade, Industry and 
Cooperatives established under Cap 327, of the Laws of Uganda, as amended.  UNBS is mandated to co -
ordinate the elaboration of standards and is  
(a) a member of International Organisation for Standardisation (ISO) and  
(b) a contact point for the WHO/FAO Codex Alimentarius Commission on Food Standards, and  
(c) the National Enquiry Point on TBT Agreement of the World Trade Organisation (WT O). 
The work of preparing Uganda Standards is carried out through Technical Committees. A Technical 
Committee is established to deliberate on standards in a given field or area and consists of key stakeholders 
including government, academia, consumer group s, private sector and other interested parties.  
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeholders and the 
general public for comments. The committee reviews the comments before recommending the draft standards  
for approval and declaration as Uganda Standards by the National Standards Council.  
The committee responsible for this document is Technical Committee UNBS/TC 19 , [Packaging and 
Packaging products ]. 
 WORKING DRAFT UGANDA STANDARD  DUS  1663 -1: 2017  
 
© UNBS 2017  – All rights reserved  1 
 Aluminium and aluminium a lloys — Part 1: Bare foil for  food 
packaging — Specification  
1 Scope  
This standard covers the requirements of annealed aluminium and aluminium alloy bare foil for food 
packaging. It is applicable for 0.011mm (11 µm) to 0.075mm (75 µm) thickness  
2 Normative references  
The following ref erenced documents referred to in the text in such a way that some or all of their content 
constitutes requirements of this document. For dated references, only the edition cited applies. For undated 
references, the latest edition of the referenced document  (including any amendments) applies . 
ISO 6361 -1:2011(en); Wrought aluminium and aluminium alloys — Sheets, strips and plates — Part 1: 
Technical conditions for inspection and delivery .  
DUS 1695: 2017, Wrought and Unwrought Metals — Aluminium and Aluminium  Alloys — Glossary of terms  
ASTM E345:16, Standard Test Methods of Tension Testing of Metallic Foil  
3 Terms and definitions  
For the purposes of this standard, the following terms and definitions  and DUS  1663 -3 apply   
3.1  
bare foil  
a cold rolled product o f rectangular cross -section, having thickness over 0.011 mm but not greater than 
0.075mm, may be either in straight length or in coil form.  
3.2   
dry annealed, a  
foil having a test dryness 100/0 free from residual rolling oil as determined by the water tes t. 
3.3   
dry annealed, b  
foil having a test dryness 90/10 having a slight film of residual rolling oil as determined by the water -alcohol 
test. 
3.4   
dry annealed, c  
foil having a test dryness 80/20, having a slight film of residual rolling oil as determ ined by the water -alcohol 
test. 
3.5   
slick annealed  
foil having a uniform film of residual rolling or applied oil as determined by the drop of water test.  DUS  1663 -1: 2017  
2 © UNBS 2017  – All rights reserved  
 ISO and IEC maintain terminological databases for use in standardization at the following addresse s:  
— ISO Online browsing platform: available at http://www.iso.org/obp  
4 Pinhole Count  
Unless otherwise stated, the pinhole count per square meter of aluminium foil area shall be as given in Table 
1. 
Table 1 — Pinhole Count  
SI NO.  Nominal  
Thickness 
µm Pinhole Count 
No. per Sq. m 
max 
a)  
b)  
c)  
d)  
e)  ≥25 
20 
18 
14 
11 0 
20 
30 
40 
60 
 
5 Freedom from d efects  
The foil shall be well finished, uniform in quality, free from splits, slivers, wrinkles, ragged edges and oil 
staining.  
6 Material  
6.1 The material used for alumini um and aluminium alloy foil shall conform to the chemical composition of 
the Grades in the table below.  
Table — Chemical composition of the grades  
Designation  Aluminium  Copper  Magnesium  Silicon  Iron Manganese  Zinc Titanium  Chromium  
19000  99.0, Mi n 0.1 0.2 0.5 0.7 0.1 0.1 - - 
19500  99.5, Min  0.05 - 0.1 0.4 0.05 0.05 - - 
19600  99.6, Min  0.05 - 0.25 0.35 0.03 0.06 - - 
31000  Remainder  0.1 0.1 0.6 0.7 0.8-1.5 0.2 0.2 0.2 
40800  98.0, Min  0.2 0.1 0.6-0.95 0.6-0.95 0.1 0.2 0.2 - 
 
6.2 The material shall be su pplied in fully annealed ‘O’ temper. If agreed by the purchaser the material may 
be supplied in any other tempers.  
7 Supply of m aterial  
General requirements relating to the supply of aluminium and aluminium alloy foil shall conform to ISO 6361 -
1. DUS  1663 -1: 2017  
© UNBS 2017  – All rights reserved  3 
 8 Lubrica nts 
8.1 Unless otherwise specified by the purchaser, the roll of foil shall be supplied in the pre -lubricated 
condition.  
8.2 As the foils are to be used in food processing, food packaging and food preservation, etc, they shall be 
produced with rolling oils /lubricants which do not contain substances which are injurious to health or have any 
deleterious effect on the flavour, odour or appearance of food products.  
8.3 The quality of the lubricants shall be such that surfaces of the foil will retain their brigh tness and shall 
not stick. The lubricants shall not dry up before two months of storage time from the date of manufacture.  
9 Preferred t hicknesses  
Unless otherwise stated, the preferred thickness shall be as given in Table 2.  
Table 3 — Preferred Thickness  
SI 
NO Nominal Thickness  Nominal 
Covering Area  
mm µm m2/kg 
i 
ii 
iii 
iv 
v 
vi 
vii 
viii 
ix 
x 
xi 
xii 
xiii 
xiv 
xv 
xvi 
xvii 
 0.011  
0.012  
0.014  
0.016  
0.018  
0.020  
0.022  
0.025  
0.028  
0.030  
0.035  
0.040  
0.045  
0.050  
0.060  
0.070  
0.075  11 
12 
14 
16 
18 
20 
22 
25 
28 
30 
35 
40 
45 
50 
60 
70 
75 33.7 
30.9 
26.5 
23.1 
20.6 
18.5 
16.8 
14.8 
13.2 
12.3 
10.78  
9.26 
8.34 
7.41 
6.17 
5.29 
4.96 
 
10 Average t hickness  
10.1 The determination of average thickness shall be carried out using a method giving repeatable results.  
10.2 In case of dispu te, the average thickness may be determined by the gravimetric method, based on 
weighing a sample of 100 mm x 100 mm area, shall be dried and weighed on a balance, accurate to at least 
0.5 mg.  DUS  1663 -1: 2017  
4 © UNBS 2017  – All rights reserved  
 Thickness of the foil, in mm = 
1.27W  
Where; W  is the mass of the foil sample (100 mm x 100 mm) in g.  
11 Dimensions and t olerances  
11.1 Unless otherwise agreed, the thickness tolerances shall be + 8 percent.  
11.2 Unless otherwise stated, the width tolerances shall be as given in Table 3.  
Table 4 — Width Tolerances  
All dimensions in millimetres  
Form of Product  Tolerance on Width  
<1000  >1000  
Coil and Sheet  ±0.5 ±1.0 
 
11.3 Unless otherwise agreed, the length tolerances shall be as given in Table 4.  
Table 5 — Length Tolerances  
All dimensions in millim etres  
Form of Product  For Width  
<500 500-1000  >1000  
Coil 
Sheet  - 
±2 - 
±3 - 
±4 
 
12 Tensile p roperties  
12.1 The tension testing shall be made in accordance with test method given in ASTM E345:16 . The foil 
shall be conforming to the tensile breaking load s as given in Table 5.  DUS  1663 -1: 2017  
© UNBS 2017  – All rights reserved  5 
 Table 6 — Tensile Breaking Loads  
SI 
NO Nominal Thickness  Breaking Load, 
kg/cm of Width  
mm µm min 
i 
ii 
iii 
iv 
v 
vi 
vii 
viii 
ix 
x 
xi 
xii 
xiii 
xiv 
xv 
xvi 
xvii 
 0.011  
0.012  
0.014  
0.016  
0.018  
0.020  
0.022  
0.025  
0.028  
0.030  
0.035  
0.040  
0.045  
0.050  
0.060  
0.070  
0.075  11 
12 
14 
16 
18 
20 
22 
25 
28 
30 
35 
40 
45 
50 
60 
70 
75 0.50 
0.54 
0.63 
0.72 
0.81 
0.90 
0.99 
1.13 
1.26 
1.35 
1.58 
1.80 
2.03 
2.25 
2.70 
3.15 
3.45 
 
12.2 Number of Tests  
When the tensile breaking load is to be determined,  not less than t wo samples shall be selected from a  
shipment with each sample from a different roll of foil  
12.3 Test s pecimens  
All the test specimens shall be taken parallel to the direction of rolling and they shall be in accordance with 
Type A or Type B specimens as pe r ASTM E345:16 . 
13 Surface c ondition  
13.1 Foil shall be tested for surface condition by spraying, as from a squeeze bottle, a continuous line of 
distilled water or distilled water -alcohol mixture across the web of foil inclined 30° from horizontal. Foil dr yness 
is categorized by the distilled water or water -alcohol mixture that will support a continuous unbroken line of 
water or mixture across the web of the foil for 2s (the unbroken line is the top of the hand of water or mixture 
across the web). To ensure  an acceptable water -alcohol mixture the alcohol denaturant shall be methanol 
(Formula 30 -10 parts of ethyl alcohol and one part methanol by volume) or equivalent.  DUS  1663 -1: 2017  
6 © UNBS 2017  – All rights reserved  
 13.2 Dry a nnealed, A  
Test dryness 100/0 foil shall support a continuous  unbroken line using 100 percent distilled water. 
Alternatively, dry annealed (100/0) foil may be tested  by a distilled water drop test in which case the drops  
shall spread evenly into a thin film.  
13.3 Dry a nnealed, B  
Test dryness 90/ 10 foil shall support a continuous unbrok en 90 percent distilled water and 10 percent alcohol 
mixture.  
13.4 Dry a nnealed, C  
Test dryness 80/20 foil shall support a continuous unbroken line using 80 percent distilled water and 20 
percent alcohol mixture.  
13.5 Slick a nnealed  
Foil shall exhibit no a reas wet table by a distilled water drop test, that is, the drops shall remain as spherical 
drops.  
14 Sampling  
14.1 General  
14.1.1In a consignment the foils of same width and thickness and of the same surface condition and 
manufactured by a single firm und er essentially similar conditions of production shall be grouped together to 
constitute a lot.  
14.1.2 Tests for determining the conformity of the lot to the requirement of this standard shall be carried out  
on each lot separately. The  number of  rolls of foils to be selected for this purpose at random over the whole lo t 
shall be in accordance with column 2 and 3 of Table 7. 
Table 7 — Scale of Sampling and Permissible Number of Defective s  
SI 
NO No. of RoIIs of 
Foils in the Lot  No. of Rolls of Foils 
to be Sel ected  Permissible No. 
of Defective  
i 
ii 
iii 
iv 
v 
vi Up to 15  
16 t0 25  
26 to 50  
51 to 100  
101 to 300  
Above 300  5 
8 
13 
20 
32 
50 0 
1 
1 
2 
3 
5 
 
14.1.3 All the rolls shall be individually examined for manufacturing defects, surface defects and dimensional 
tolerances. A sample failing to meet any one of these requirements shall be called defective. The lot shall be 
considered as conforming to the corresponding requirements of this standard. If number of defective satisfy 
the freedom from defects and  dimensions i n less than or equal to the permissible  number given in column 4 of 
Table 6.  DUS  1663 -1: 2017  
© UNBS 2017  – All rights reserved  7 
 14.3 Number of tests for tensile p roperties  
14.3.1 From each lot, the number of rolls of foils, t o be subjected to, tension test shall be one for lots 
weighing 250 kg or less, an d shall be in proportion of one per 250 kg or part thereof for lots weighing more 
than 250 kg. For the selection, the sample selected in 1 4.2.1 may be made use of.  
14.3.2 In case of lot weighing more than 250 kg one sample shall be taken from each lot, to provide the 
necessary test pieces.  
14.3.3 The test pieces required for various tests shall be cut off from each of the sample selected as in 
14.3.1 when cold and shall receive no further heat treatment before being tested.  
14.3.4 Re-test 
14.3.4.1  If any sa mple fails to comply with any of the requirements/tests, then two additional samples from 
the same roll or sheet shall be selected, one of which shall be from the material from which the original test 
sample was taken, unless that roll or sheet has been wi thdrawn by the supplier.  
14.3.4.2  Should both the additional samples satisfy the requirement tests, then the lot represented by 
these samples shall be deemed to comply with this standard.  Should either of the two samples fails, then the 
lot represented sha ll be deemed not to comply with this standard.  
14.4 Criteria for c onformity  
A lot shall be considered to have conformed to the requirements of the standard, if 1 4.2.1 to 1 4.3.4 are 
satisfied.  
15 Labelling and marking  
15.1 The bulk package shall be legibly and indelibly marked with  the following information:  
a) product name as “Aluminium foil”;  
b) Quantity, in pieces or kg , where applicable ; 
c) Nominal thickness  in micrometres or millimetres ; 
d) Dimensions (length and width in millimetres ); 
e) In case of thick ness less tha n 15µm winding direction of the roll shall have to be indicated that is 
either dull side or bright side out;  and 
f) Surface condition . 
15.2 Each package of aluminium and aluminium alloy bare foil shall be suitably marked for identification with 
the name of ma nufacturer, grade, condition of the material, batch No, and date of manufacture.  
 DUS  1663 -1: 2017  
8 © UNBS 2017  – All rights reserved  
 Bibliography  
[1] IS 15392 (2003),  Aluminium and Aluminium Alloy Bare Foil for Food Packaging   
 DUS  1663 -1: 2017  
© UNBS 2017  – All rights reserved  9 
 Certification marking  
Products that conform to Uganda standards may be marked with Uganda National Bureau of Standards 
(UNBS) Certification Mark shown in the figure below.  
The use of the UNBS Certification Mark is governed by the Standards Act, and the Regulations made 
thereunder. This mark can be used only by those licensed under the certification mark scheme operated by 
the Uganda National Bureau of Standards and in conjunction with the relevant Uganda Standard. The 
presence of this mark on a product or in relation to a product is an assurance that the goods comply with the 
requir ements of that standard under a system of supervision, control and testing in accordance with the 
certification mark scheme of the Uganda National Bureau of Standards. UNBS marked products are 
continually checked by UNBS for conformity to that standard.  
Further particulars of the terms and conditions of licensing may be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 DUS  1663 -1: 2017    
 
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