インターレース系の摩擦交絡強度

Abstract

In order to make the frictional tangling strength of interlaced yarns clear, interlaced yarns were subjected to iterative frictional forces by reciprocating rubbers and afterward their number of tangles was measured.The frictional tangling strength is defined as the ratio of the residual and original numbers of tangles.The number of friction, friction angle, static tension, friction speed and kind of yarns were used as experimental parameters.Results obtained are as follows. (1) When the number of friction, friction angle, static tension and friction speed are large, tangling parts easily disappear.When the friction angle is large, difference in length between filaments on inner and outer sides ofbending yarn is notable and occurrence of slip of filaments is easy and hence, tangling parts easily disappear owing to large bending angle of yarn and frictional force.When the static stress is large, the frictional force increases and hence, the above mentioned difference in filament length is large and the slip easily occurs.The friction speed has no effect on the frictional force.However, when the friction speed is large, every filament does not move and deform together with each other synchronously with the time variation of the frictional force and hence, the slip easily occurs. (2) Yarns with more filaments or larger fineness show larger frictional tangling strength because of larger degree of entanglement and cohesion of filaments.