To quote Giovanna Imperia in our post dated July 5, 2022 found HERE:
“The filament from the cocoon is covered in sericin — which is a protein gelatin produced by the silk worm to bind filaments while making the cocoon (Think of it as worm spit). It is not removed from the filaments being reeled to add strength and minimize breakage.”
More from Giovanna.
To quote Cheryl Kolander in her book:
Unbleached, cultivated silk noil fabric is very popular under the name “raw silk”. This is a misnomer: true raw silk is silk which has not been degummed. The reason for the nickname may be that the noil fabric has the muted luster and lack of sparkles associated with true raw silk.
Oddly enough, it is the lack of luster of raw silk—both the true raw and the noil—that is their greatest asset. The matte finish gives them a casual look. They can be worn places and times where a sleek, lustrous silk would be too dressy.
Noil silks are also popular for clothes because they are very wrinkle-resistant. And noils spin a soft, bulky yarn that knits or weaves a lightweight but thick and substantial fabric.”
I bought this exquisite scarf from a silk farmer in Japan. The threads are single silk filaments.
A close up of the single filament scarf.
A close-up of a noil scarf.
Another shot of the noil shawl in the post on July 25, 2022. SEEN HERE