How raw silk is produced?

The process used to make silk fabric for sheets (or anything else) is called Sericulture or silk farming AKA the rearing of silkworms for the production of silk. Silkworm larvae eat mulberry leaves until they are about 10,000 times heavier than when they first hatched and are ready to make a cocoon. The silk is produced in two glands in the silkworm's head and then forced out in liquid form through openings called spinnerets and then solidifies when coming into contact with the air. The silkworm spins about 1 mile of filament in the next two to three days to form its cocoon. The outside of the cocoon is then brushed to find the end of the silk filament, which is then wound on a reel.