7—SOME OBSERVATIONS ON FIBRE BREAKAGE IN THE GINNING OF COTTON

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Abstract
Cotton fibres break during ginning if the force applied to overcome the attachment to the seed exceeds the fibre breaking load. The pattern of breakage may be described in terms of mathematical probabilities and frequencies, with parameters which can be estimated from counts of the various types of ends of ginned fibres. Changes in mean length and length distribution caused by ginning were measured directly for one cotton and the results agree well with values calculated from the counts of fibre ends. Further limited experimental results show that the attachment forces may be greater than the breaking loads of the weakest fibres, a feature leading to some inevitable breakage in ginning. The paper concludes with a discussion of some problems associated with the overlap of the frequency distributions of fibre attachment forces and fibre breaking loads.

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