DRAFT UGANDA STANDARD  
  DUS 914-2 
Second  Edition  
2019-mm-dd 
 
 Reference number  
DUS 914-2: 2019 
© UNBS 2019  
  
Bed blankets — Part 2 : Blankets made from wool and 
wool/polyamide  — Specification  
 DUS 914-2: 2019 
ii © UNBS 2019 – 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 contra ct. Users are 
responsible for its correct application  
© UNBS 20 19  
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 7 333 2 50 
Fax: + 256 41 4 286 123  
E-mail: unbs@infocom.co.ug  
Web: www.unbs.go.ug  DUS 914-2:2019 
© UNBS 2019 – All rights reserved  iii 
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ............................  iv 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 
2 Normative references  ................................ ................................ ................................ ............................  1 
3 Terms and definitions  ................................ ................................ ................................ ...........................  1 
4 Requirements  ................................ ................................ ................................ ................................ .........  2 
4.1 Composition  ................................ ................................ ................................ ................................ ...........  2 
4.1.1  Virgin  wool  blankets  ................................ ................................ ................................ ..............................  2 
4.1.2  Grey  wool blankets  ................................ ................................ ................................ ................................  2 
4.1.3  Wool/polyamide blankets  ................................ ................................ ................................ .....................  2 
4.2 Manufacture  ................................ ................................ ................................ ................................ ...........  2 
4.3 Stitching  ................................ ................................ ................................ ................................ .................  3 
4.4 Dimensions  ................................ ................................ ................................ ................................ ............  3 
4.5 Colour  ................................ ................................ ................................ ................................ .....................  4 
4.5.1  Range of colours  ................................ ................................ ................................ ................................ ... 4 
4.5.2  Colour fastness ................................ ................................ ................................ ................................ ...... 4 
4.6 Flammability  ................................ ................................ ................................ ................................ ...........  5 
5 Sampling  and test ................................ ................................ ................................ ................................ .. 5 
5.1 Selection  and size of samples  ................................ ................................ ................................ ..............  5 
5.1.1  Inspection lot and test sample  ................................ ................................ ................................ .............  5 
5.1.2  Test specimens  ................................ ................................ ................................ ................................ ...... 5 
5.2 Test procedures  ................................ ................................ ................................ ................................ ..... 5 
5.2.1  Determination of fibre content  ................................ ................................ ................................ .............  5 
5.2.2  Colour fastness ................................ ................................ ................................ ................................ ...... 5 
6 Marking/Labelling  ................................ ................................ ................................ ................................ .. 5 
6.1 Marking  ................................ ................................ ................................ ................................ ...................  5 
6.2 Labelling  ................................ ................................ ................................ ................................ .................  6 
Bibliography  ................................ ................................ ................................ ................................ ........................  7 
 DUS 914-2: 2019 
iv © UNBS 2019 – All rights reserved  
 Foreword  
Uganda National Bureau of Standards (UNBS) is a parastatal under the Ministry of Tourism, Trade and 
Industry established under Cap 327 , of the L aws of Uganda.  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 En quiry Point on TBT/SPS Agreements 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 consis ts of representatives of 
consumers, traders, academicians, manufacturers, government and other stakeholders.  
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 7, Textiles, Leather, Paper 
and rela ted products , Subcommittee SC 1, Textiles and related products . 
This second edition cancels and replaces the first edition (US 914 -2:2011), which has been technically revised  
 DRAFT UGANDA STANDARD  DUS 914-2: 2019 
 
© UNBS 2019 – All rights reserved  1 
 Bed blankets — Part 2 : Blankets made from wool and 
wool/polyamide  — Specificati on 
1 Scope  
This part of DUS 914 specifies requirements for woven wool and woven wool/polyamide blankets intended for 
institutional and household use.  
2 Normative references  
The following referenced 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 5081,  Textiles — Woven fa brics — Determination of  breaking strength and  elongation (Strip method)  
ISO 12952 -4, Textiles — Burning behaviour of bedding items —Part 4: Specific test methods  for the ignitability  
by a small open flame  
US EAS 247, Method  for determination  of colour  fastness  of textiles  to peroxide  washing  (sodium  
perborate)  
US EAS 248, Methods for determination of threads per centimetre in woven fabrics  
US ISO 105 -B01, Textiles — Tests for colour fastness — Part B01: Colour fastness to light: Daylight  
US ISO 105 -C10, Textiles — Tests for colour fastness — Part C10: Colour fastness to washing with soap or 
soap and soda  
US ISO 105 -X12, Textiles — Tests for colour fastness — Part X12: Colour fastness to rubbing  
US ISO 1833,  Textiles — Binary fibre  mixtures — Quantitative ch emical analysis  
US ISO 2060 , Textiles — Yarn from packages — Determination of linear density (mass per unit length) by the 
skein method  
US ISO 3801, Textiles — Woven fabrics — Determination of mass per unit length and mass per unit area  
US ISO 5077 , Textiles — Determination of dimensional change in washing and drying  
US ISO 22198 , Texti les — Fabrics — Determination of width and length  
3 Terms and definitions  
For the purposes of this document, the following terms and definitions apply.   
2 © UNB S 2019 – All rights reserved  
 3.1 
lot 
total number of blankets included in any part delivery of the bulk  
3.2 
bulk 
total number of bla nkets included in the contract of supply  
4 Requirements  
4.1 Composition  
4.1.1  Virgin  wool  blankets  
Virgin  wool blankets  shall be composed  entirely  of 100%  virgin  wool.  The blankets  shall be designated  as 
follows:  
a) blankets unraised, with shrink -resistant an d flame -retardant finishes;  
b) blankets raised, without a  shrink -resistant finish;  and 
c) blankets raised, with a shrink -resistant finish.  
4.1.2  Grey  wool blankets  
Grey wool blankets shall contain a minimum of 95 % wool.  
4.1.3  Wool/polyamide blankets  
Wool/polyam ide blankets  shall have  warp  and weft yarns  composed  of fibre blends  containing  a minimum  of 
70 % new wool, the remainder being 6.7 dtex, 60 mm staple -fibre polyamide  
4.2 Manufacture  
The blankets  shall be woven  in a plain  weave.  The mass  per unit area,  number of warp  and weft threads  per 
unit length, breaking strength and dimensional change on washing  shall be as given in Table  1 
 
 
 
 
 
 
 DUS 914-2: 2019 
© UNBS 2019 – All rights reserved  3 
 Table 1 — Requirements  for blankets  made from  wool  and wool/polyamide  
 
Property   
Finish  Virgin wool 
blankets   
Grey wool   
Wool/pol yamide   
Test method  
Mass per unit area,  
g/m2 (min.)   
-  
475  
475  
380  
US ISO 3801  
Number of threads per cm 
(min.)   
 
-  
 
7  
 
7  
 
7  
 
 
US EAS 248   
Warp  
Weft - 8 8 8 
Breaking strength,   
 
 
-  
 
 
230  
 
 
230  
 
 
270 ISO 5081  
N (min.)  
 
Warp  
Weft - 170 170 230 
Resistance to spread of 
flame (min)    
Class – B  
Class – B  
Class – B  
ISO 12952 -4 
 
 
 
 
Dimensional change on 
washing (max. % in either 
direction)   
Non-shrink 
resistant   
± 10 % after 5 
wash/dry cycles   
± 10 % after 5 
wash/ dry cycles   
± 5 % after 
wash/dry cycles   
3  
 
 
 
 
US ISO 5077   
Shrink 
resistant   
± 5 % after 3 
wash/dry cycles   
 
-  
 
- 
NOTE  1: Yarns  should  be loose  and evenly  spun,  the weave  should  be uniform  with firm and straight  selvedges  and raising  should  
be even.  
 
NOTE 2: No requirements  for treatment  against  moths  are specified  but interested  parties  may agree  as to whether  the 
blankets  should  be treated  and if so on the type of such  treatment.  
 
4.3 Stitching  
With the exception  of cot blankets,  blankets  shall be either turned  15 mm and stitched  at both ends  only or 
turned  15 mm and stitched all round.  
Cot blankets shall be turned 15 mm and stitched all round.  
NOTE  Stitching  is intended to prevent fraying.  
4.4 Dimensions  
The dimensions  of the blankets  shall be as given in Table  2, when  determined  according  to US ISO 22198   
4 © UNB S 2019 – All rights reserved  
 Table  2 — Requirements  for dimensions  
Width,  
cm ± 3  Length,  
cm ± 3  
75 100 
150 200 
160 210 
180 240 
230 250 
Note 1  The test method for width is given in US ISO 22198  except that the measurements a re 
taken to within ± 1.0 cm.  
Note 2  The test method for length is given in US ISO 22198  except that the measurements are 
taken to within ± 1.0 cm.  
Note 3  It is recommended that grey wool blankets are 160 cm width and 210 cm length.  
 
4.5 Colour  
4.5.1  Range  of colours  
4.5.1.1  With the exception of grey wool blankets,  blankets shall be either natural  wool coloured or dyed.  
NOTE  Interested  parties may agree upon the colour.  
4.5.1.2  Grey wool blankets shall be grey or grey brown only.  
4.5.2  Colour fastness  
The colour fastness of dyed blankets including the stitching thread shall be as given in Table  3 
Table 3 — Requirements  for colour fastness  
 
Agency  Virgin  wool  
blankets  
(minimum  rating)  Wool/polyamide  
(minimum  rating)   
Test method  
Light  (min)  4 4 US ISO 105 -B01 
Washing  (min)   
4  
4  
 
US ISO 105 -C10 Change in colour  
staining  4 4 
Peroxide  bleaching  (min)   
4  
-  
 
US EAS 247 change in colour  
staining  4 - 
Rubbing  (min)   
-  
4  
 
US ISO 105 -X12 wet staining   
dry staining  - 5 DUS 914-2: 2019 
© UNBS 2019 – All rights reserved  5 
 NOTE  Colour fastness i s not a requirement for grey wool blankets  
 
4.6 Flammability  
Where flammability performance is specified, blankets shall satisfy the requirements for flame resistance. 
Flammability shall be evaluated for both width and length, before and after 10 launderi ngs on a minimum of 
three samples . 
5 Sampling  and test 
5.1 Selection  and size of samples  
5.1.1  Inspection lot and test sample  
A scheme equivalent to at least 1 in every 30 blankets  shall be the  minimum.  
NOTE: Interested parties may  agree on more frequent t esting.  
5.1.2  Test specimens  
Test specimens  shall be taken  at points  as widely  dispersed  as possible  throughout  the available  test 
samples,  and no two specimens  used  for the determination  of a particular  property  shall contain  the same  
warp or  weft threads . 
In the case  of multi -coloured  samples,  all colours  shall be represented  by the specimens  selected  for colour  
fastness testing in accordance  with Table 3.  
5.2 Test procedures  
5.2.1  Determination of fibre content  
One specimen from  each blanket  in the test  sample shall  be tested in  accordance with  the appropriate method  
given in US ISO 1833 and US ISO 2060  
5.2.2  Colour fastness  
One specimen from each blanket in the test sample  shall be tested  by the methods given in Table 3.  
6 Marking/Labelling  
6.1 Marking  
The following  information  shall appear  in legible  and indelible  marking  on each  lot marked  in English.  Other  
additional language  e.g. Kiswahili,  may be agreed upon as the  contract or order may direct.  
a) name of contents;  
b) quantity;  
c) name and address of the  manu facturer;  
d) size;  
6 © UNB S 2019 – All rights reserved  
 e) color;  
f) lot number or batch number;  
g) care label; and  
h) Country of manufacture.  
6.2 Labelling  
Each  blanket  shall have  a permanent  label  securely  attached  at one end. The label  shall be commercial  type  
and shall have  the name  of the manufacturer  or trademark.  The marking  shall be well defined,  clearly  legible  
and show  good  fastness  to laundering.  The blanket  shall also be labeled  for composition  or fiber content  and 
where relevant, the designations  (see 4.1)  DUS 914-2: 2019 
© UNBS 2019 – All rights reserved  7 
 Bibliography  
US 914 -2:2011, Bed blanket s — Part 2 : Blankets  made from wool and wool/polyamide  — Specification (First 
Edition).  
 DUS 914-2: 2019 
© UNBS 2019 – 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 b elow.  
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 
requirements 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 Dir ector, Uganda 
National Bureau of Standards.  
 
 DUS 914-2: 2019   
 
ICS nn.nnn.nn  
Price based on nn pages  
© UNBS 2019 – All rights reserved