What I show here is a filament yarn originally created for dolls hair. I was looking for a high-gloss yarn for a carpet and finally found this. A filament yarn which is made by pressing a liquid substance through the spinnerets. You then get an endless yarn.
A silk worm does the same when he makes a silk cocoon. The filament of a silk worm may be as long as 900 metres.
This is a synthetic raffia, made of a synthetic polypropylene, usually high-gloss and available in several colours. The production process is similar to that of plastic foil or plastic bags, and also to filament yarn.
Natural raffia is a product of the Raphia palm from Africa. The palm leaves are stripped, dried and dyed if necessary.
Filament yarn is either synthetic like polyester, or natural like viscose or latex.