Artificial fibers
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Regenerated fibers is also known as reclaimed fibers and belongs to the artificially made fibers. Examples of artificial fibers are Viscose, Modal, Cupro, Lyocell, Acetate, Triacetate and Bamboo-Viscose.
The regenerated fibers are divided into two groups, cellulose and cellulose acetate. The majority of the regenerated fibers have wood cellulose as their raw material. The material is cut and boiled in calcium bisulphite and converted into sulphite cellulose using caustic soda and kolsvala. The solution is pressed into discs in a spin bath. Here, the cellulose is re-formed (regenerated) into textile fiber form.
Regenerated fibers made of proteins have been found in small amounts, e.g. Lanital made of curd. Attempts have also been made to produce the desired bacterial proteins that are suitable for fiber production. These attempts have not yet led to commercial products.
Properties
Regenerated fibers properties can be compared with other natural fibers like cotton. They often have a beautiful shine and a nice flow. Regenerated fibers are not particularly strong and become weaker when wet which calls for a short wash.