Abstract
The operation of slashing is complex, involving a number of factors. These factors may be grouped roughly into two classes: (1) chemical, (2) physical or mechanical.
The chemical factors are those involving the nature of the sizing material and the softener used in the size mix. They are responsible for the stiffness and the co— hesion of the sized, warp yarns. These propertie,s appear, in the cases studied so far, to be closely related. On the other hand, the mechanical factor.s are concerned with the mechanical abuse to which the yarn is subjected before and during slashing. They are mainly responsible for the residual elongation which the sized yarn possesses. Although the breaking strength of the yarn is usually in— creased by sizing, this increase in strength is not proportional to the amount of size on the yarn.
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