2. Impurities.
Scouring .
Vegetable Matter .
Carbonization .
Techniques.
New Technologies.
Advantages & Disadvantages.

3. Impurities
Natural Acquired
Oil Fat Sand Pollen

5. Vegetable Matter
VM
Discounts
Medium
Fine Wool
Wool

8.  The object of the carbonization process is the
removal of vegetable matter from wool.
Processing Stages
Scouring of the raw wool with non-ionic detergent.
Rinsing.
Immersion in a long bowl containing 5-7%
(w/v) sulphuric acid, 1-2 g/L detergent at 20-
30C.

9.  Double squeezing and/or continuous centrifuging prior to
drying.
 Drying at 60-80C to a low regain.
 Baking at 95-120C to carbonize the VM
 Pass through heavy fluted rollers to crush the embrittled
VM
 Convey to a rotating shaker/de-duster to remove the
charred VM dust
 Pass through a neutralizing bowl usually containing
sodium carbonate

10.  Rinsing with a small addition of detergent.
 Bleaching with hydrogen peroxide at approximately pH
5 with formic acid.
 Final drying

11. The traditional
system
Fabric
carbonizing
Carbosol
system

12. The traditional system
5-7.5%
6-8% 5-65%

13. Carbosol system

14. Control the carbonization process Very
important
why ?

15. Acidising.
Moisture removal.
 Drying/Baking .
Burr crushing and dedusting.
 Neutralization

16.  Ensures full cleaning of fibers from impurities
 The fiber length isn’t changed
 The wool production as compared with the
mechanical method is increased by 1-
1.3%.
 The quality of yarn and fabric improved.
 wool carbonization is more effective than
burr picking in burr pickers.

17.  The harsh process described cause
considerable fiber breakage and loss
rendering any long wools used, suitable for
the woolen system only.