Experiment Name: Printing of 100% cotton fabric with sulpher
dye by screen method.
Theory: The printing of textile material is
the application of colour according to predetermined design. In direct style
the dyes are directly printed at the required places of the fabric. Nowadays
screen printing is by far the most common technology today. There are two types
of screen printing system.
1. Rotary screen printing.
2. Flat screen printing.
Objective:
1. To learn about printing process of
cotton fabric by sulpher dye.
2. To learn about screen printing method.
Nature of sample: 100% cotton woven fabric.
Apparatus required:
1. Beakers.
2. Glass Rod.
3. Measuring Cylinder.
4. Digital Balance.
5. Printing Screen.
6. Squeezer.
Process Sequence:
Preparation of fabric.
Preparation of print paste.
Application of print paste on the surface
of the fabric.
Dry the fabric at room temperature.
Steaming at 90deg C
After Treatment.
Printing Recipe:
Sulphur Dye: 3gm/parts
Na2S : 3gm/parts
Glauber Salt : 4gm/parts
Soda Ash: 2gm/parts
Thickener : 70gm/parts
Water : 18 gm/parts
Total : 100gm/parts
Sample Attachment:
Comment:>>>>>
Precaution:
1. We have to maintain the viscosity of
print paste.
2. We have to apply even pressure on
squeezer for even printing.
Conclusion : >>>>>>>>>>>>>>>>>
