Silk
Do you know about silk? Silk is nice cloth. It can be raw material for any design clotes. Silk also is a expensive cloth. And how a silk occur? let me explain...
The first stage is called sericulture. This is the cultivation of the silk worms. The most popular species for obtaining mulberry silk is Bombyx mori. The worms are raised in a controlled environment and are fed mulberry leaves. The worms form a cocoon around themselves by secreting a protein from the top of their head.
The farmers collect these cocoons and deliver them to the factory, where they are subject to filature operations. The first step is to sort the cocoons according to color, size, shape and texture. Then, the cocoons are made to go through a serious of hot and cold immersions. In this way, the sericin (the gummy substance that holds the fibroin strands in the silk filament together) is softened.
Once this is done, the filament is unwound from the cocoon and combined to produce a thread of raw silk. This is the process of reeling. Usually, three to ten strands are reeled at a time. Finally the skeins into which the filament was reeled, are packed into bundles called books which are then put into bales to be exported to the mill. In the mill, the silk fiber is woven into silk fabric, using either a hand loom or a power loom.
Then, there is it a beautiful cloth from a natural product.
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