Printing of 100% cotton fabric with sulpher dye by screen method.

 

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 : >>>>>>>>>>>>>>>>>