Question

Explain the process to obtain silk thread from cocoon

Answer 1

Cocoon of silk moth are used to obtain the silk fibers. These cocoons are kept under the sun or boiled or exposed to stem. The silk fibers separate out. This process of obtaining wool from the cocoons is called reeling the silk. Reeling done in special machines

Answer 2

From Cotton to Silk :

$\textbf{Step 1 }$:

Eggs of silk moth are stored carefully on strips of cloth or paper and sold to the silk moth farmers.

$\textbf{Step 2 }$:

The eggs are kept by the farmers under proper conditions till the caterpillars come out from the cocoons.

$\textbf{Step 3 }$:

The silk moth caterpillars are kept then kept in bamboo trays and fed on fresh mulberry leaves.

$\textbf{Step 4 }$:

When the caterpillars stops eating, they shifted to bamboo chambers provided with racks, twigs. Here, they spin cocoons.

$\textbf{Step 5 }$:

At the end of pupal stage, the moth cuts the cocoon and flies out.

$\textbf{Step 6}$:

The cocoons are then stored out according to their colours, size, shape, and texture.

$\textbf{Step 7}$:

The stored cocoons are collected and immersed in boiling water to kill the insect inside them.

$\textbf{Step 8 }$:

The cocoons are given a series of hot & cold immersions, to make them soft.

$\textbf{Step 9 }$:

The silk filaments are separated from the cocoons. This process is called reeling of the silk . The resulting fibre is known as raw silk, which can be dyed into various colours.

$\textbf{Step 10 }$:

The silk fibres are then spun to get silk threads.