Process of silk cloth production

Question

The graphics describe steps included in a silkworm’s life, and the stages involved in the process of silk cloth production.

Overall, there are 5 main stages in the life cycle of a silkworm, starting from embryonic stage to a grown moth. In addition, the process of producing silk cloth involves five steps, which begins with selecting cocoons and ends with weaving or dying.

At the beginning of the cycle, moths lay eggs which later hatch to become larvae. These larvae feed on blueberry leaves to grow. After 4 to 6 weeks, the outer shells of these larvae that made of silk threads grow thicker and thicker until they reach the fourth stage, cocoons. The cocoons are later transformed into grown moths or are collected to make silk cloths.

If cocoons are collected for silk cloth making, they are soaked in water and boiled up. Next, the threats wrapping around the cocoons are unwound. Each cocoon normally possesses around from 300 m to 900 m of thread. These threads are then twisted with each other and then dyed in colors. However, depends on the preference, the twisted threads can be dyed first or woven first to complete the process.