
The process always begins with these guys: THE SILK WORMS. These ones here are actually alive, and squirming around a lot. As you can see, they are happily munching on their mulberry leaves, which are the extent of their diet. The mulberry plants are grown just outside on the premises, and leaves are also brought in from farms in the surrounding area.

Here you can see a close-up of TONS of silkworm cocoons inside a barrel, ready to be sorted. It's hard to tell from the photograph, but some of the cocoons are large (containing two silk worm pupae) while others are much smaller (containing only one pupa). Each has a distinct purpose that I will eventually describe.

This is a machine that "cooks" the cocoons before they can be used. The cooking involves bringing the cocoons to a certain temperature in order to ...err... kill the pupa inside. It also involves adding enough moisture to the cocoon so that the silk filament may be more easily extracted.

This is the de-Pupa-fication station (most likely, not its real name), where the pupae are removed from the cocoons and deposited in the little basket. Don't fret, these pupae have not died in vain! In fact, they will be used to make some special sort of...face cream? OK. So now that the depupafication process is complete I will discuss the difference between the single and double cocoons.
Single Pupa Cocoons

This picture shows step 2 for single pupa cocoons. Each pupa produces a single silk filament that makes up the cocoon. As such, just one little cocoon alone produces a filament that is 1500 METERS in length (that's 4921.25984 feet). The cocoons are placed in boiling water, as shown in the picture, and the end of the filament is located and attached to this machine. Each reel on the machine draws out the filaments from several cocoons at once, spinning them to eventually be made into thread.

I'm skipping the intermediate steps where tons of filaments are put together to make thread, and also the step where the thread is dyed. The above picture shows the mechanical loom that weaves the patterns that make up the silk that most people think of when they think "silk". OK, so now for...
Double Pupae Cocoons
These cocoons contain two Pupa, so therefore two 1500-meter filaments. It is too difficult to separate the two filaments to make thread, so these cocoons are generally used to make silk duvets / comforters.

After the pupas are removed, the cocoons are soaked in cold water and then stretched over a small u-shaped ring (a smaller version of the one above). 8 layers of stretched-out cocoons go onto the small ring, and then the result of that is stretched over one of the big rings (above). This is repeated 10 more times, and the final result is shown above, which contains 80 layers of stretched out silk cocoons. This is then air-dried and will eventually be part of the inside of a silk comforter.

The result of the big ring is then stretched out into a large square that will eventually be the duvet. If you visit the factory, you get the chance to actually try and stretch out the silk, and trust me, this stuff is strong and its surprisingly difficult. It takes 100 layers of silk to make a single comforter (essentially, the result of 8000 cocoons). If you buy the comforter directly from the factory you can get a wholesale price, and it is actually very affordable (and guaranteed as 100% silk by the Chinese government, so no worries about it being fake). They are very light and warm, and I couldn't resist buying one during my second trip.
Whew! i hope that wasn't boring... it's actually very cool if you get to see it in person
