The book Principles of Dyeing was written by author Fraps, George Stronach, 1876- Here you can read free online of Principles of Dyeing book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Principles of Dyeing a good or bad book?
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We will here consider only some causes of defects not peculiar to any class of dye. In cotton dyeing, unripe cotton fibers c^.wsq vihitQ specks; motes and oil spots lead to defects. Other defects may be traced X,o faults in bleaching. In wool dyeing, kemps lead to defects in dyeing. Irregu- lar dyeing may be caused by injudicious blending of dif- ferent qualities of wool, which have different degrees of affinity for the dye; by irregular weaving; by the use of yams not uniform in size, or twist...ed in different direc- tions, or twisted with different tensions. Imperfect scour- ing of raw wool, by which wool grease is left on the fiber, will lead to defective dyeing. After scouring, wool should be thoroughly washed, as the presence of alkaline bodies (soap or sodium carbonate) may cause trouble. Lijne in pulled wool must be removed before dyeing; the wool is treated with hydrochloric acid, washed thoroughly, and scoured. Dark spots may be caused by the sulphur in wool ; if it comes in contact with iron, copper, tin, or lead while in the alkaline condition, as in scouring, the sul- phides of these metals may be formed, and produce dark spots.
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