The silk filaments are taken out from the cocoon by the process of:

The silk filaments are taken out from the cocoon by reeling.

Silk is a natural material that is produced by silkworms. Natural silk is incredibly lustrous and silky. The eggs that will eventually develop into silkworm larvae are laid by the silk moth. The silkworm becomes bigger as it eats mulberry leaves. They eventually begin spinning their cocoon. Reeling is done to gather the cocoons and separate the filaments from them.