DRAFT TANZANIA STANDARD      TDC 3 (114 4) CD 3             
                                                                                        First Edition    
                                       
                                                                                                                       
©TBS 2018 All right s reserved                                                                      First edition 20 22 
  
       Textiles  — Car Seat Covers  — Specification  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
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©TBS 2018 All right reserved                                                                      Second edition 2020  
              TDC 3 (1142)  CD 3 
Foreword  
This Draft Tanzania Standard is being developed by the House Hold Textile Technical Committee 
under supervision of the Textile and Leather Division Standards Committee and it is in accordance 
with the procedures of the Bureau.  
 This Draft Tanzania Standard has been prepared with assistance drawn from:  
 SANS 1261 – 1, Performance requirements for retail textiles, Part 1 -  Household piece goods 
 and articles.  
 IS 12649 – Treated/coated fabrics for various applications – Guide for selection.  
 TZS 1423, Textile upholstery fabric specifications.  
 TZS 2510, Leather for upholstery Specifications.  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
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©TBS 2018 All right reserved                                                                      First  edition 202 2 
 1.  Scope  
This D raft Tanzania Standard specifies the requirements  and test methods for car seat covers  made 
of leather  or different fabric types including coated fabrics.   
2. Normative References  
For the purpose of this Draft Tanzania Standard the following references shall apply :  
a) TZS 4 Rounding off numerical values.  
b) TZS 21 Textiles -  Woven or knitted fabrics - Determination of mass per unit length and -    
per unit area.   
c) TZS 22 Textiles -  Woven fabrics Determination of breaking load and extension.  
d) TZS 23 Textile - Tests for colour fastness, -Colour fastness to light: Xenon arc.  
e) TZS 24 Textiles - Tests for colour fastness – Colour fastness to washing: Test 4.  
f) TZS 26 Textile s - Determination of conductivity, pH, water -soluble matter, chloride and 
sulphate in aqueous extracts.   
g) TZS 27 Textiles: Determination of dimensional changes of fabrics by cold water 
immersion.   
h) TZS 40 Textiles - Tests for colour fastness – Colour fastness to light: Daylight.  
i) TZS 44 Textiles - Tests for Woven or knitted fabrics - Determination  of length and width.  
j) TZS 138 Textiles - Test for colour fastness to rubbing.  
k) TZS 208   Leather – Physical and mechanical strength - Determination of tear load.  
l) TZS 529 Textiles - Test for colour fastness to dry cleaning.  
m) TZS 2709 Packaging – Flexible Plastic Packaging Material – Specification.  
n) ISO 13936 – 1, Textiles — Determination of the slippage resistance of yarns at a seam in 
woven fabrics — Part 1: Fixed seam opening method.  Look for TZS  
o) ISO 13936 – 2, Textiles — Determination of the slippage resistance of yarns at a seam in 
woven fabric s — Part 2: Fixed load method.  
p) TZS 2510  Leather for upholstery Specifications.  
q) TZS 1423  Textile upholstery fabric specifications.  
r) ISO 13937 - 1, Textiles — Tear properties of fabrics — Part 1: Determination of tear 
force using ballistic pendulum method (Elmendorf).  
s) ISO 6940, Textile fabrics — Burning behaviour — Determination of ease of ignition of 
vertically oriented specimens.  
t) ISO 6941, Textile fabrics — Burning behaviour — Measurement of flame spread 
properties of vertically oriented specimens  
 
 
 
 
  
 
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©TBS 2018 All right reserved                                                                      First  edition 202 2 
 3. Terms and Terminolog ies  
 
For the purpose of this Draft Tanzania Standard the following definitions shall apply:  
3.1 car    
wheeled motor vehicle used for transportation . 
3.2 car seat c over    
accessories that protect the original seat upholstery from wear and add a custom look to a vehicle's 
interior . 
3.3 knitted fabric   
fabric manufactured by intermeshing of loops (interloping) of yarns.   
3.4 woven fabric  
fabric manufactured by interlacing two sets of yarns at right angles.  
4 Requirements  
4.1 Materials  
4.1.1 Textile fabric  
The fabric used in the manufacture of car seat cover  shall be free from dressing and filling materials 
and from substances liable to cause subsequent tendering.  The fabric used to manufacture car seat 
covers shall comply with TZS 1423 . 
4.1.1.1 Fabric structure  
The fabric structure shall be woven or knitted.  
4.1.1.2 Fibre composition and proportion  
The fibre composition of the fabric shall be of any natural or manmade textile fibre of quality as 
specified in this Draft Tanzania Standa rd. 
4.1.2 Leather  
The grain of the leather for making up the car seat cover shall be free from flays and grain defects 
that affect its appearance .  
The flesh side of the leather shall have been shaved and shall be free from any cuts and loose flesh. 
The leather shall be firm, pliable and shall not be pippy.  
The leather used in manufacture car seat cover shall comply with TZS 2510.  
4.2 Flammability  
The burning behaviour of car seat covers fabric  shall be tested in accordance with 16 CFR Part 1610 
and be of at least Class 1. See ISO 6940 and ISO 6941.  
4.4 Performance requirements     
A seat cover  shall comply with th e requirements given in table 1 . 
  
 
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©TBS 2018 All right reserved                                                                      First  edition 202 2 
  Table 1 – Performance of car seat cover made from uncoated fabrics  
SN Characteristics  Requirements  Test Methods  
  Uncoated 
fabric  Coated fabric  leather  Leather test 
methods  Textile fabrics 
test methods  
    
1 Mass per  unit area 
(g/m2), min  20 300 -  TZS 21  
2  
  Breaking strength, N, 
min. (woven fabrics)  
a) Longitudinal  
b) Transverse   
      
 
200 
200 
  
 
250 
150  
 
200  
 
TZS 212   
 
TZS 22    
  
 
3 Elongation at break (%), 
min (woven fabrics)  
a) Longitudinal  
b) Transverse   
 
50 
100  
 
50 
100  
-  
-  
TZS 22  
 
4 Tear strength, N, min, 
(velour, flocked and 
woven fabrics only)  
a) Longitudinal   
b) Transverse   
 
32 
16  
 
5 
5  
 
30  
 
TZS 208   
 
ISO 13937 – 1 
 
5 Seam Strength  
a) Resistance to 
opening at 
seam, N, min  65 65 - - 
ISO 13936 – 1 
 
b) Strength at 
seam, N,  min 90 90 - - 
ISO 13936 – 2 
6   
 Bursting strength, kPa, 
min. (knitted fabrics only)          400 
 400 -  TZS 22  
 
7   
   Resistance to flat abrasion   
For uncoated fabric  
a) Rubs to end point, 
min. 
b) Change in shade after 
4,000 rubs, rating, min
   
10,000  
 
4   
 - -  TZS 412  
 
   For coated fabric 
(minimum circles)  - 700 -   
8 Flexural endurance, 
min - 300,000 
cycles without 
damage  
 20,000 
cycles 
without 
damage  TZS 206  TZS 206  
9   
  
  
  
  Dimensional changes on 
washing %, max.  
 
a) Warp/wale direction  
b) Weft/course direction   
    
 
 
 
3 
2    
 
 
-  
 
 
 
 -   
 
TZS 137  
 
  
 
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©TBS 2018 All right reserved                                                                      First  edition 202 2 
  
5.Packing  
5.1 Unit Packaging  
Each set of car seat covers shall be packed in a  suitable material as specified in TZS 2709  
6 Marking  
6.1 Unit packages  
The following information shall indelibly be marked on a label sewn or marked at  an appropriate 
position on the car seat cover ; 
a) Manufacturers name, address and registered trade mark;  
b) Name and description of the product;  
c) Batch number;  
d) Car type;   
e) Composition of the material of the car seat cover;   
f) Instructions for use;  
g) Instructions for disposal; and  
h) Country of manufacture.  
6.2 Bulk Packages  
The following information shall indelibly have labelled /printed on the bulk pack age; 
a)  Manufacturer's name, address and registered trade mark;  
b) Type of car;  
c) Number of unit packages in the bulk package;  
d) Gross Mass;  
e) Batch number;  
f) County of origin.  10 
  
  Colour fastness rubbing     
a) Dry, min  
b) Wet, min  
4   
4  
 4   
4  
 4   
4  
TZS 211  
   
TZS 138  
 
11 
  Colour fastness to dry 
cleaning; Shade 
change, min  
     
4  
4  
4  
ISO 15702  TZS 529  
 
12   Colour fastness to light, 
min  
3 3 -  
- TZS 40  
13 Colour fastness to 
washing, min  
a) Change in colour  
b) Staining on transfer 
clothes   
4 
 
4  
4 
 
4  
4 
 
4  
 
ISO 15703  TZS 24  
 
14 
 Colour fastness to water  
spotting , min  4 4 4  
ISO 15700  TZS 531   
 
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©TBS 2018 All right reserved                                                                      First  edition 202 2