Introduction of natural dyeing process of cotton:

Natural dyeing process of cotton is the application of natural dyes to the fiber molecule of cotton fabric. It is the most popular dyeing procedure at present because less amount of hazardous chemicals are using. As a result, peephole converting to the natural dyeing process of cotton. Now a practically applied procedure is discussing below.

Process flow chart of natural dyeing of cotton:

A complete documentation of practical natural dyeing process of cotton with diagram

Fabric: 100% cotton.

Color: Yellow

Preparation of Dyeing recipe:

REQUISITION FO DYESTUFF & CHEMICALS

Date              :	00-00-00
Batch No       :	1000
Shade/Color  :	Yellow
Quantity        :	1000Kg
L.:R.              :	1:8
Total Water   :	8000 Ltr

Buying House :	Practical Textile
Buyer              :	P T
Order No         :	100
Machine No    :
Type of fabric :	100% cotton
Sro No             :

SL#	Name of the chemicals	G/Liter	%	Req’d Qty. In Kg	Issues Qty.	Remarks
Pretreatment :
1	Detergent	1		8.000
2	Anticreasign agent	2		16.000
3	Caustic	2.0		16.000
4	H2O2	2.5		20.000
5	Acitic Acid			8.000
6	Peroxide killer	0.15		1.200
7	Enzyme	0.25		2.000
Dyeing :
8	Levelling agent	1.00		8.000
9	Anticreasing agent	1.00		8.000
10	Yellow xx		3.0	30.000
11
12	Glober Salt	30.0		240.000
After Treatment :
13	Soaping agent	1.0		8.000
14	Anticreasing agent	1.0		8.000
15
16	Fixing agent	1.0		8.000
17	Softener	1.0		8.000

 PRACTICAL TEXTILE                                      PRACTICAL TEXTILE 

     Issued                                                                              Prepared by                                                      

Dyeing sequence: We cut the sample for every stage of natural dyeing process. As a result you can understand easily. This is the example of a reupdated factory.

After unload the fabric we send it to finishing department.

After that slitting> stenter> compacting occurs. Finally we got the finish fabric.

The finished fabric picture is here

Conclusion Of natural dyeing process of cotton :

Natural dyeing is a eco friendly dyeing process. The output products of the natural dyeing is health response. So that every one should use this product. In natural dyeing there is some advantage and disadvantage.

Advantate of natural dyeing technology or dyes stuff:

• Eco friendly dyes.
• This dyes are made from natural source. As a result, they are sustainable because the dyed cellulosic fabric contains no hazardous man-made-chemicals like Azo pigments or Azo dyestuffs.
• The natural colors are exhaust completely. As a result the drain water is complete clean. Also the first rinsing bath will be completely clean. This is sustainable dyes stuff because there are no residues of binder. Here pigments in the drained water and rinsing bath.
• Natural dyes used textiles contains no Azo dyes, that means the recycling of used clothes are sustainable, means the pigments are suitable for “cradle-to-cradle” philosophy.

Disadvantages of natural dyeing process of cotton:

•   The color range are limited. So that various color is not possible.
•   The fastness properties of natural dyes are not up to the mark specially  the light and color change after wash. Generally, the light fastness for light color 1-2. For dark color 3. change of color after wash 3.
• Shade variation is more than normal dyeing process.
• Discharge print is not possible.
• Even dyeing is not possible normally.

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