With a modified Hiruta's abrasion tester, were studied the abrasion life and the elongation of sized yarns, scoured and bleached in a state of soft cheese before sizing.It was found that averages of these measured values had relation to the shrinkage rate of scouredbleached yarns in 30° Be NaOH solution, but no relation to the whiteness of yarns.On the other hand, the probability of abrasion life indicated a broken line on a Weibull probability paper showing the catastrophic distribution for specimens having lower shrinkage rate.The abrasion life becomes longer for such yarns as their wax, pectin, etc. on fiber surfaces were removed in scouring process.

No abstract

No abstract

No abstract

No abstract