1. Anti UV treatment of textiles
Prepared by
Rajib Chandra Gosh

2. The electromagnetic spectrum

3. Why UV protection’s necessary

4. Ultraviolet protection factor
Classification UPF Approximate % UV
blocked
Good UV protection 15-24 93.3%-95.8%
Very good UV protection 25-39 96%-97.4%
Excellent UV protection 40-50 97.5%-98%
Textile’s UV protection performance is determined by ultraviolet protection factor

5. Fabric performance according to UPF
• Cotton / polyester has higher UPF
• Woven fabrics has higher UPF than knitted
fabrics
• Cotton / polyester blended fabrics has higher
UPF

6. Factors of UV protection

7. Methods of UV protection in textiles
1. Nano finishes
2. UV absorbers
3. Colors

8. Nano finishes

9. Procedure for Nano finishes
Pretreatment
Dyeing
After treatment
In after treatment nano finishes at 100° c for 2.5
hrs

10. UV absorbers
By using gamma radiation to develop UV
protection factor into textiles

11. Procedure of UV absorber
• At first cut the cotton fabrics into small
50*50cm
• Then it is washed by 5gm/l soap at 90c for 20
min
• Then applied Nano particles zno into both
sides of fabrics
• Then again washed by soap 4gm/l and dried
horizontally .

12. Colors performance
• Black ,navy, deep red resists UV a little .
• Direct, reactive and vat dyes has UV
protection properties
• Optical brightening agents enhances
brightness by UV emission and excitement

13. Thank you for your attention