Natural Fibers
Animal fibers are, without a doubt, the oldest used by human beings, since they have been used since prehistoric times.
Generally they are protein, as they are hair, fur, wool… They are easy to dye and spin. They can be woven or non-woven like felt, which is a set of clumped fibers.
Within this classification we find:
Wool: Which comes from different species of sheep (the one we know best is merino). Its most important characteristics are elasticity and easy absorption of humidity.
Silk: Which comes from the silkworm, bombyx mori. Its properties are resistance and elasticity.
The hairs: Taken from different animals such as goats (mohair and cashmere fabrics), horses (the mane has several, for hat-making or rope making), rabbits (angora fabrics) or camelids (alpaca, llama, camels …) Its main property is thermal, as they are hollow fibers.
Natural vegetable: Fibers are made of cellulose. The three most important in the textile industry are cotton, linen and esparto.
There are others like coconut, hemp or sisal, but they are more used in other productive sectors.
The fibers of mineral or inorganic origin are practically not used in the textile world. The most known are the asbestos, the glass fiber and the one that is extracted of some precious metals like the silver or the gold.