 DEAS 229 :2021  
ICS 59 .080.30  
 
© EA C 2021                                                                                                                          Second Edition 2021   
 DRAFT EAST AFRICAN STANDARD  
Crepe bandages  — Specification  
EAST AFRICAN COMMUNITY  
 
 
 
 DEAS 229 :2021  
ii © EAC 2021  – All rights reserved  
 Copyright notice  
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Reproduction for sales purposes may be subject to royalty payments or a licensing agreement.  
Violators may be prosecuted . DEAS 229 :2021  
© EAC 2021  – All rights reserved  iii 
 Contents  Page 
Foreword  ................................ ................................ ................................ ................................ ............................  iv 
Introduction  ................................ ................................ ................................ ................................ .........................  v 
1 Scope  ................................ ................................ ................................ ................................ ......................  1 
2 Normative references  ................................ ................................ ................................ ............................  1 
3 Terms and definitions  ................................ ................................ ................................ ...........................  1 
4 Requirements  ................................ ................................ ................................ ................................ .........  2 
4.1 General requirements  ................................ ................................ ................................ ...........................  2 
4.2 Specific requirements  ................................ ................................ ................................ ...........................  2 
4.2.1  Yarns  ................................ ................................ ................................ ................................ .......................  2 
4.2.2  Mass per unit area  ................................ ................................ ................................ ................................ . 2 
4.2.3  Width  ................................ ................................ ................................ ................................ .......................  2 
4.2.4  Length  ................................ ................................ ................................ ................................ .....................  2 
4.2.5  Stretch and recovery  ................................ ................................ ................................ .............................  2 
4.2.6  Foreign matter  ................................ ................................ ................................ ................................ ....... 2 
4.2.7  pH ................................ ................................ ................................ ................................ ............................  3 
4.2.8  Colour fastness  ................................ ................................ ................................ ................................ ..... 3 
5 Packaging  ................................ ................................ ................................ ................................ ...............  3 
6 Labelling  ................................ ................................ ................................ ................................ .................  3 
6.1 Labelling on individual packages  ................................ ................................ ................................ ........  3 
6.2 Labelling on bul k packages  ................................ ................................ ................................ .................  4 
7 Sampling  ................................ ................................ ................................ ................................ ................  4 
Annex  A (Informative)  Determination of width  ................................ ................................ ...............................  5 
A.1 Procedure  ................................ ................................ ................................ ................................ ...............  5 
A.2 Calculation  ................................ ................................ ................................ ................................ .............  5 
Annex  B (Normative)  Determination of length  ................................ ................................ ...............................  6 
B.1 Procedure  ................................ ................................ ................................ ................................ ...............  6 
B.2 Calculation  ................................ ................................ ................................ ................................ .............  6 
Annex  C (Normative)  Determination of str etch, stretched length and recovery  ................................ ........  7 
C.1 Apparatus  ................................ ................................ ................................ ................................ ...............  7 
C.2 Procedure  ................................ ................................ ................................ ................................ ...............  7 
C.3 Calculation  ................................ ................................ ................................ ................................ .............  7 
Annex  D (Normative)  Determination of foreign matter  ................................ ................................ ..................  8 
D.1 Apparatus  ................................ ................................ ................................ ................................ ...............  8 
D.2 Reagents  ................................ ................................ ................................ ................................ .......................  8 
D.3 Procedure  ................................ ................................ ................................ ................................ .....................  8 
D.4 Calculation  ................................ ................................ ................................ ................................ ....................  8 
Bibliography  ................................ ................................ ................................ ................................ ......................  10 
 
 DEAS 229 :2021  
iv © EAC 2021  – All rights reserved  
 Foreword  
Development of the East African Standards has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through 
harmonized standard ization, trade barriers that are encountered when goods and services are exchanged 
within the Community will be removed.  
The Community has established an East African Standards Committee  (EASC)  mandated to develop and 
issue East African Standards  (EAS) . The Committee is composed of representatives of the National 
Standards Bodies in Partner States, together with the representatives from the public and private sector 
organizations  in the community .  
East African Standards are developed through  Technical Com mittees that are representative of key 
stakeholders including government, academia, consumer groups, private sector and other interested parties. 
Draft East African Standards are circulated to stakeholders through the National Standards Bodies in the 
Partn er States. The comments received are discussed and incorporated before finalization of standards, in 
accordance with the Principles and procedures for development of East African  Standards.  
East African Standards are subject to review, to keep pace with te chnological advances. Users of the East 
African Standards are therefore expected to ensure that they always have the latest versions of the standards 
they are implementing .  
The committee responsible  for this document is Technical Committee EASC/TC 061, Te xtiles, textile products 
and accessories . 
Attention is drawn to the possibility that some of the elements of this document may be subject of patent 
rights. EAC shall not be held responsible for identifying any or all such patent rights.  
This second edition  cancels and rep laces the first edition (EAS 229:2001 ), which has been technically revised. 
The main changes compared to the previous edition are as follows:  
— A clause on normative references has been added;  
— The requiremen ts have been modified to cater for  knitted crepe bandages  DEAS 229 :2021  
© EAC 2021  – All rights reserved  v 
 Introduction  
Crepe bandage is a fabric having a high stretch due to the amount of twist in the yarns. It is used in the 
treatment of sprains and strains and in other surgical conditions where light support is required.  
 DRAFT EAST AFRICAN STANDARD  DEAS 229 :2021 
 
© EAC 2021  – All rights reserved  1 
 Crepe bandage s — Specification   
1 Scope  
This D raft East African Standard  specifies requirements , sampling and test methods  for crepe bandages .  
2 Normative references   
The following documents are 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.  
ASTM D 2255, Standard Test Method for Grading Spun Ya rns for Appearance  
ISO 139 , Textiles — Standard atmospheres for conditioning and testing  EAS 155 -1, Cotton yarns — Code of 
practice for the grading of spun yarns — Part 1: Grading by appearance    
ISO 3071, Textiles — Determination of pH of aqueous extract  
 ISO 3801, Textiles — Woven fabrics — Determination of mass per unit length and mass per unit area   
ISO 8498, Woven fabrics — Description of defects — Vocabulary  EAS 237, Methods for determination of 
colourfastness of textile materials to washing   
ISO 8499 , Knitted fabrics — Description of defects — Vocabulary  
3 Terms and definitions   
For the purposes of this document, the following terms and definitions shall apply.  
ISO and IEC maintain terminological databases for use in standardization at the following a ddresses:  
— ISO Online browsing platform: available at http://www.iso.org/obp  
3.1  
crepe   
fabric having high elasticity, resulting from the amount of twist in the yarns  and the method of weaving  or 
knitting  
3.2  
fast edge  
edge defined by the outer warp th read 
3.3 
recovery  
recovered extension expressed as a percentage of the imposed extension  DEAS 229 :2021  
2 © EAC 2021  – All rights reserved  
 4 Requirements  
4.1 General requirements  
4.1.1  Crepe bandages shall:  
a) be made out of either woven or knitted fabrics  
b) be free from defects as described in ISO 8498 and I SO 8499  
c) have one continuous length containing no joints   
d) have a high elasticity in the both direction s, resulting from the amount of twist in the yarn and the 
method of weaving or knitting  
e) have fast edges  
4.1.2  The bandage may be either dyed or undyed  (bleached or unbleached ) and may have a coloured 
thread woven along the length.  
4.1.3  Crepe bandages may come with clips for fastening . Clips shall be corrosion resistant  
4.2 Specific requirements  
4.2.1 Yarns  
The yarns used for the manufacture of crepe bandage s shall be even and of at least appearance gr ade C as 
specified in ASTM D 2255  
4.2.2 Mass per unit area  
The mass per square metre of bandage shall be not less than 90 g /m2 when tested in accordance with ISO 
3801.  
4.2.3 Width  
When tested in accordance with Annex A, the width of the bandage (measured between the fast edges) shall 
be as declared on the label, subject to a tolerance of ± 2 mm.  
4.2.4 Length  
The unstretched length of the crepe bandage shall be as declared on the label, subject to a tolerance of m inus 
2 per cent. The length shall be determined in accordance with Annex B.  
4.2.5 Stretch and recovery  
The fully stretched  length of the bandage shall be not less than 1.5 times unstretched length, and the recovery 
shall be not less than 40 per cent.  
The stretch shall be determined in accordance with Annex C.  
4.2.6 Foreign matter  
The extractable foreign matter in the bandage shall not exceed one per cent of the dry mass.  
This shall be tested in accordance with Annex D.  DEAS 2 29:2021  
© EAC 2021  – All rights reserved  3 
 4.2.7  pH 
When tested in accordance w ith ISO 3071, crepe bandages shall have a pH of 6.0 – 8.5 
4.2.8 Colour fastness  
Coloured bandages shall comply with the colour fastness ratings given in Table 1  when tested in accordance 
with the test methods specified therein . 
Table 1 — Colour fastness requirements of crepe bandages  
Parameter  Requirement  Test method  
Colour fastness to 
Washing , min.  Colour change  4 ISO 105 -C10 
Staining  3 
Colour fastness to 
Rubbing , min.  Wet 3 ISO 105 -X12 
Dry 4 
Colour fastness to 
Perspiration  (both 
alkali  and acid ), 
min. Colour change  4 ISO 105 -E04 
Staining  3 
 
5 Pack aging  
5.1 Each bandage shall be rolled and individually wrapped with suitable material that protects product 
integrity  during storage, transportation and handling  
5.2 Bandages of the same width and colour shall be packed in the same bulk container and wrapped 
suitab ly so as to be adequately protected against soiling and other contamination.  
6 Labelling  
6.1 Labelling on individual packages  
Packages shall be legibly and indelibly labelled  on the outside with the following information:  
a) manufacturer’s name , physical addr ess and/or registered trade mark;  
b) width and length;  
c) fibre composition and proportion;  
d) country of origin  or manufacture ; 
e) date of manufacture and expiry.  
f) the word “sterile” for sterilized crepe bandage ; 
g) instructions for use, storage and disposal ; and  
h) batch n umber  DEAS 229 :2021  
4 © EAC 2021  – All rights reserved  
 6.2 Labelling  on bulk packages  
The following information shall appear in legible  and indelible labelling  on the outside of each bulk package : 
a) manufacturer’s name , physical address  and/or registered trade mark;  
b) width and length ; 
c) gross weight ; 
d) country of origin or manufac ture; 
e) date of manufacture and expiry.  
f) the word “sterile” for sterilized crepe bandage;  
g) batch number ; and  
h) instructions for handling and storage  
7 Sampling  
Random samples of the product shall be drawn for test in accordance with ISO 2859 -1. DEAS 2 29:2021  
© EAC 2021  – All rights reserved  5 
 Annex A 
(Informative)  
 
Determination of width  
A.1 Procedure  
A.1.1  Condition the samples in accordance with ISO 139 . 
A.1.2  Lay one bandage, without tension, on a flat table.  
A.1.3  Take width measurements (between the fast edges) perpendicular to the edges of the sample at five 
different positions equally distributed along the length of the sample.  
A.1.4  Repeat the procedure on each of the five bandage samples.  
A.2 Calculation  
A.2.1  Calculate the average width of each sample from the average of the five measure ments.  
A.2.2  Calculate the bandage width as the average of the widths of the five samples measured. Report this 
value as the bandage width.  DEAS 229 :2021  
6 © EAC 2021  – All rights reserved  
 Annex  B 
(Normative ) 
 
Determination of length  
B.1 Procedure  
B.1.1  Condition the samples in accordance with ISO 139 .  
B.1.2  Take one bandage sample and lay it, without tension, on a flat table.  
B.1.3  Take the length measurement parallel to the edges of the bandage.  
B.1.4  Repeat the test on all the five bandages.  
 B.2 Calculation  
 B.2.1  Calculate the average length fro m the five measurements.  
 Report this value as the length of the bandage.   DEAS 2 29:2021  
© EAC 2021  – All rights reserved  7 
 Annex  C 
(Normative)  
 
Determination of stretch, stretched length and recovery  
C.1 Apparatus  
C.1.1  A suitable apparatus having the grips that hold the specimen in a horizontal plane,  and capable of 
applying within approximately 5 s a tensile load of 27 N per 25 mm of width of bandage under test.  
C.1.2  a steel tape of length greater than the stretched length of the sample to be measured, graduated in 
centimetres and millimetres   
C.2 Procedure  
C.2.1  Measure the unstretched length of the bandage under tests, according to the procedure given in 
Annex B. Make a pair of datum marks not less than 30 mm from each end of the bandage and measure, to 
the nearest 2 mm, the unstretched length betwe en the datum marks. Secure each end of the bandage in a 
grip of the apparatus, apply the tensile load (see C1.1), and as soon as the full load is attained, measure, to 
the nearest 2 mm, the stretched length between the datum marks. Maintain the load for 1 min. Release the 
load, remove the bandage from the grips, lay it on a horizontal flat surface and allow it to relax for 5 min, 
releasing any drag on the bandage caused by adhesion to the flat surface by gently running a smooth rod 
under the full length of the bandage. Then measure, to the nearest 2 mm, the recovered length between the 
datum marks.  
C.3 Calculation  
Calculate separately the stretched length, the percentage stretch and the percentage recovery as follows:  
 
 
 
Where;  
 = mean unstretched length  of bandage, in mm.  
 = mean unstretched length between datum marks, in mm.  
 = mean stretched length between datum marks, in mm.  
 = recovered length between datum marks, in mm.  DEAS 229 :2021  
8 © EAC 2021  – All rights reserved  
 Annex  D 
(Normative)  
 
Determination of foreign matter  
D.1 Apparatus  
D.1.1   a stoppered bottle  
D.1.2  Extraction apparatus  
D.1.3   A fine sieve No. 150 micron  
 D.2 Reagents  
 D.2.1  Chloroform  
 D.2.2  0.5 per cent diatase solution  
 D.3 Procedure  
 D.3.1  Dry the sample to constant weight at 105 °C. Weigh accurately 5 g of the dried s ample and put it in a 
stoppered bottle and weigh. Repeat drying and weighing until constant weight.  
 D.3.2  Extract the dried sample with chloroform for one hour in the soxhlet apparatus. Remove the sample 
from the apparatus and allow the residual chlorofo rm to evaporate.  
 D.3.3  Transfer the sample to a suitable vessel and add 400 ml of water. Heat slowly and boil for about one 
minute, cool by adding approximately an equal volume of water.  
 D.3.4  Decant the liquid through a fine sieve No. 150 micron, sque ezing the sample by hand to remove as 
much of the liquid as possible.  
 D.3.5  Return the sample to the vessel and repeat the washing process for five further times with 400 ml of 
water each time.  
 D.3.6  Place the washed sample and any loose threads or fib res from the sieve in a beaker and immerse 
with a 0.5 per cent solution of diastase. Maintain the sample at 70 °C until it is free from starch.  
 D.3.7  Decant the liquid through the sieve, return any loose threads or fibres on the sieve to the sample in 
the beaker and repeat the washing process with boiling water.  
 D.3.8  Dry the sample at 105 °C to constant weight.  
D.4 Calculation  
 Calculate the percentage of loss in weight, which is expressed as a percentage of foreign matter, by the 
following formula:  DEAS 2 29:2021  
© EAC 2021  – All rights reserved  9 
 
 
Where;  
K = percentage of foreign matter;  
W = weight of residue;  
W0 = weight of sample used in the test.  
 
. 
 
 DEAS 229 :2021  
10 © EAC 2021  – All rights reserved  
 Bibliography  
EAS 229 :2001, Crepe bandages — Specification  
 DEAS 229 :2021    
 
© EAC 2021  – All rights reserved  
  
  