There are two diagrams which related to produce silk. The first figure illustrates the metamorphosis of silkworm. The second picture elucidates the process of producing silk cloth. Overall, both illustrations use the cocoon as main point.
In the first life cycle of silkworm, it is started from the female silkworm producing eggs in mulberry leaf. After that, in 10 days later, eggs would become larva. Then, the larva ate the leaf of mulberry. While they ate, they also create silk thread to cover their bodies. It took 4-6 weeks, when the bodies were almost closed by silk thread. When larva ate more leaf, 3-8 days later, all of their body will be covered by silk thread. It is identified as cocoon. In the next 16 days, cocoon could become a moth. This complete process called metamorphosis.
In cocoon stage, there can be an interrupt process, when coon took as material to create silk cloth. This is shown in second picture. It is begun from selecting the quality of coon. Then it will be boiled into waters. The boiled step will be stopped when the size of cocoon bigger into twice than before. The next process is unwinding. This step is taken line in cocoon. The string can be 300-900 metres. Finally, line is twisted into dye or it can be dye after the line weaved.
Metamorphosis of Silkworm and Process of Producing Silk Cloth