|MadSci Network: Agricultural Sciences|
Sorry for the delay... After the crop has been gathered the fibres are seperated from the seeds by a process known as ginning. Gins (i.e. ginning machines) may be classified into two types the saw gin and the roller gin. A saw gin consists of a series of circular saws having specially shaped teeth and used mainly for short and medium staple cottons. Modern gins have 80-120 saws mounted on a long, horizontal shaft at suitable intervals. Seed cotton is fed through a hopper and the saws operate against it as the fibres known as lints become separated from the seed. In a roller gin: A knife jerks the seed from the fibre while the latter is pulled away between a roller and a fixed knife. McCarthy gin is a special type of roller gin. Roller ginning which is often preferred for longer fibres is slower and more costly process. Cotton linters are the short, fuzzy hair-like fibres that remain on the seeds after ginning has been done. The cotton linters are removed by a second ginning process. They are used in the manufacture of viscose (or rayons) and acetates, plastics, shatter proof glass, photographic film and for other purposes. I hope this helps........Mark
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