抄録
Findings ob theoretical and experimental researches on the cop forming are reported.
The relation between the number of the traverse i and the radius of the cop r are expressed by the following equation; where k: speed ratio between the traverse motion and the spindle revolution r0: radius of the pirn h: length of the traverse a: experimental constant From this equation the following linear form may be obtained; By determining a experimentaly, the apparent specific gravity of the cop can be erpressed by the equation; where, ρν: weight of the unit length of yarns α, β: experimental constant.
Then if k takes a larger value ρ becomes larger too, but the influence of k to ρ varies due to various properties of yarns and its degree may be characterized by the ratio β/α.
