Abstract
The segregation of fibres in blended yarns, resulting in uneven transverse distribution of components, is discussed and considered desirable or undesirable according to the motive in producing the blended yarn. Experiments are described on a wide range of blends of man-made fibres in which segregation has been found to depend upon the denier, staple length, chemical identity and certain physical properties of the components. Indications are given of the direction in which these factors operate in securing uneven transverse distributiop, and the information is potentially useful in the design and adequate prediction of properties of blended yarns.

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