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Most of the fibre now in use are human made fibres or natural fibres modified by human. the mercerised cotton fibres, for example is natural cotton fibre treated in such a way that the flat fibres become round and get a Glaze .it then looks like silk and is used for clothes,etc.. also the cellulose from fibres is taken and treated to make entirely new fibres. the artificial fibres thus made are also cellulose fibre but of an entirely new structure .the cellulose is digested in alkaline medium and the resultant Orange mass is passed through small orifices in an acid bath where it again forms into cellulose fibre. the process is known as viscose process and the fibre formed is called viscose rayon in another method cellulose is turn into cellulose Acetate which is dissolved in acetone and the solution forced out through orifices into the air when it dries in into fibres. these fibre through inflammable, are fine then viscose rayon termed as viscose rayon

Types of fibre -- There are two types of fibres- Human made fibres and natural fibres modified by humans. Natural cotton fibre is treated to become round and get a Glaze. It looks like silk and is used for clothes.
Making of new fibres--The cellulose from fibres is taken and treated to make entirely new fibres. The artificial fibres are also cellulose fibre of an entirely new structure. The cellulose is digested in alkaline medium and the resultant Orange mass is passed through small orifices in an acid bath where it  forms into cellulose fibre by viscose process and the fibre formed is called viscose rayon.
Cellulose formation--  Cellulose is turn into cellulose by Acetate which is dissolved in acetone and the solution forced out through orifices into the air when it dries in into fibres. These fibres are inflammable and called viscose rayon. 

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