Experiment Name: Printing of 100% polyester fabric with
disperse dye by screen printing 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 polyester fabric by
disperse dye.
2. To learn about screen printing method.
Nature of sample: 100% polyester 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:
Disperse Dye : 3parts
Dispersing agent : 1 parts
Acetic acid : 2 parts
Thickener : 75 parts
Water : 19 parts
Total : 100 parts
Working Procedure:
1. Collection of pre-treated sample.
2. Preparation of print paste
*) Dye + acetic acid + Dispersing
agent + Boiled water = Paste I
*)
Paste I + Thickener = Print Paste
3. Apply the print paste on the fabric surface according to
method and style.
4. Dry the sample at room temperature.
5. Steaming at 110deg C.
6. Soap Wash
Sample attachment:
Comment:
Pre caution:
1. We have to maintain the viscosity of print paste.
2. We have to apply even pressure on squeezer for even
printing.
Conclusion :
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