Silk Fiber

About silk

1. W e l c o m e t o M y P r e s e n t a t i on

2. M a h e d i Hasan Raju I D : 2 1 3 1 2

3. S I LK

4. ABOUT SILK Silk is a natural protein fibre. The protein fibre of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons.The protein fibre of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons .

5. HISTORY OF SILK The production of silk originates in China in the Neolithic. Silk remained confined to China until the half of the 1st millennium BC. China maintained its virtual monopoly over silk production for another thousand years. Silk cultivation spread to Japan around 300 AD, and, by 522 AD.

6. PRODUCTION PROCESS OF SILK Step 1: Raising silkworms & harvesting cocoons. Step 2: Thread extraction: Step 3: Dyeing. Step 4: Spinning. Step 5: yarn.

7. PROPERTIES OF SILK low density makes for light and comfortable clothing. high resistance to deformation. good insulation properties / warm in winter, cool in summer. strongest natural fiber available. shimmers and shines. good affinity to dye. leaving aside the rather demanding care, silk is one of the most comfortable fiber fabrics in the world.

8. SILK ADVANTAGES & DISADVANTAGES Advantage Disadvantage Soft Expensive Drapes well Needs special care, dry cleaning Dyes and prints well Stains with water Very strong Yellows with age Lightweight Weakened by perspiration, sun, soap Resists soil, mildew, and moths Attacked by insects, silverfish Comfortable Absorbent

9. USE OF SILK

10. BANGLADESH SILK Rajshahi silk : Rajshahi silk is the name given to the silk products produced in Rajshahi, Bangladesh. It is famous because it is a high quality fabric used for clothing, especially for saris.

11. THANK YOU