DRAFT UGANDA STANDARD  
 
  DUS 631  
Second  Edition  
2021 
 
 Reference number  
DUS 631:20 21 
© UNBS 20 21  
  
Footwear – Determination of heat insulation of granulated cork 
bottom filler for footwear  
 DUS 631:20 21 
ii © UNBS 20 21 – 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 contract. Users are 
responsible for its correct application  
© UNBS 20 21  
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilised in any 
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 DUS 6 31:20 21 
© UNBS 20 21 – All rights reserved  iii 
 Foreword  
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Trade, Industry and 
Coopera tives 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 Alimentari us Commission on Food Standards, and  
(c) the National Enquiry Point on TBT Agreement of the World Trade Organisation (WTO).  
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 groups, private sector and other interested parties.  
Draft Uganda Standards adopted by the Technical Committee are widely circulated to stakeho lders 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 Technic al Committee UNBS/TC 7, Textiles, Leather, Paper 
and related products , Subcommittee SC 2, Leather  and related products . 
This second edition cancels and replaces the first edition ( US 631:2006), which has been technically revised:  
The title was modified to “Footwear – Determination of heat insulation of granulated cork bottom filler for 
footwear”  
The scope was  modified to “This Uganda Standard specifies a method for the determination of heat insulation 
of granulated cork bottom filler for footwear”  
Test meth od US 656 was replaced with ISO 17709  as a test method for sample preparation  
Clause 7 : The average of 16 temperature readings was replaced with average of 4 temperature readings  
 DRAFT UGANDA STANDARD  DUS 631: 20 21 
 
© UNBS  2021 – All rights reserved                  1 
 Footwear – Determination of h eat insulation of granulated cork 
bottom fille r for footwear  
1 Scope  
This draft Uganda Standard specifies a method for the determination of heat insulation of granulated cork 
bottom filler for footwear.  
2 Normative references  
The following referenced documents referred to in the text in such a way tha t 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 17709 , Footwear — Sampling location, preparation and duration of conditioning of samples and test 
pieces  
3 Terms and definitions  
ISO and IEC maintain terminological databases for use in standardization at the following addresses:  
— ISO Online browsing platform: available a t http://www.iso.org/obp  
No terms and definitions are listed in this document.  
4 Apparatus  
4.1 Hot plate of size at least 60 mm by 60 mm which can be maintained at a temperature of 100 °C ± 2 °C  
4.2 A sample of granulated cork bottom filler  of nominal thic kness 8 mm and in which is cut four (4) square 
holes each of size 50 mm by 50 mm  
4.3 Surface thermometer of accuracy 1 °C in the range of 20 °C - 100 °C  
5 Preparation of specimens  
From a rolled sheet of the sample, as prepared in ISO 17709 , cut f our (4) sp ecimens each of size 50 mm by 
50 mm.  
6 Procedure  
6.1 Heat the hot plate to 100 °C.  
2 © UNBS 20 21 – All rights reserved  
 6.2 Place the sample of granulated cork bottom filler  on the hot plate and position the four (4) specimens in 
the square holes.  
6.3 Maintain the surface temperature of the h ot plate at 100 °C. 
6.4 After  1 h, use the thermometer to take the temperature of each of the four (4) specimens.  
7 Evaluation  
Calculate the average of the 4 temperature readings. R eport as the heat insulation the difference between 100 
°C and the average temperature.  
 
  
© UNBS 20 21 – All rights reserved  iii 
 Bibliography  
US 631:2006,  Determination of heat insulation of granulated cork bottom filler for footwear   
4 © UNBS 20 21 – All rights reserved  
   
© UNBS 20 21 – All rights reserved  v 
 Certification marking  
Products that conform to Uganda standards may be marked with Uganda National Bureau of Standards 
(UNBS) Certific ation 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 Nat ional 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 
requirements of that standard under a system of supervision, c ontrol 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 licens ing may be obtained from the Director, Uganda 
National Bureau of Standards.  
 
 DUS 631:20 21   
 
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