Silkworm cocoon making

Cocooning (2-3 days)

Mature silkworms produce a large amount of urine, so to prevent the larvae that are still feeding from becoming dirty and humid, they are transferred to holders.

Once the silkworm has decided on a place to spout its silk by walking around, the liquid silk produced by its silk gland (the source of the thread) is taken out through the spout and attached to the frame where the silkworm creates its cocoon. Then, by moving its head and chest in a figure-eight pattern, it pulls out the thread and gradually strengthens its footing as it creates a cocoon.

Silkworms create cocoons by continuously spinning silk for about 3days without rest. Depending on the strain, the length of the thread that makes up one cocoon is about 1,200m to 1,500m.