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Fig. 12.
Light fastness study of Calendula officinalis flower dye coated natural fibres
| S. No | Fibre | Without | Salt | Sodium bi carbonate | Oxalic acid | Tannic acid | Ferrous (FAS) | Tin | Alum | Tamarind |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Palm leaf | 2-3 | 3-4 | 2-3 | 3-4 | 3-4 | 4-5 | 3-4 | 3-4 | 3-4 |
| 2 | Korai | 2-3 | 2-3 | 3-4 | 2-3 | 2-3 | 3-4 | 1-2 | 2-3 | 2-3 |
| 3 | Banana | 3-4 | 2-3 | 2-3 | 3-4 | 3-4 | 4-5 | 4-5 | 4-5 | 3-4 |
| 4 | Screw pine | 2-3 | 2-3 | 3-4 | 2-3 | 2-3 | 3-4 | 2-3 | 3-4 | 3-4 |
| 5 | Sisal | 2-3 | 3-4 | 2-3 | 4-5 | 3-4 | 3-4 | 3-4 | 3-4 | 2-3 |
| 6 | Pineapple | 3-4 | 2-3 | 2-3 | 3-4 | 1-2 | 2-3 | 4-5 | 3-4 | 3-4 |