. A manual of dyeing: for the use of practical dyers, manufacturers, students, and all interested in the art of dyeing . mmtMm^/^///////A^myy^///y^^^^^^ Fig. 86.—Graemigers cop dyeing machine (section).. Fig. 87.—Graemigera cop-dyeing machine (plan) MACHINERY USED IN DYEING. 713 practice, however, great difficulties have been experienced, more especiallyin the production of even shades or colours. Nevertheless, cop-dyeing has,during the last twenty years, made steady progress, and there are at presentmany establishments in which large quantities of cotton are dyed in the great impetus wa
. A manual of dyeing: for the use of practical dyers, manufacturers, students, and all interested in the art of dyeing . mmtMm^/^///////A^myy^///y^^^^^^ Fig. 86.—Graemigers cop dyeing machine (section).. Fig. 87.—Graemigera cop-dyeing machine (plan) MACHINERY USED IN DYEING. 713 practice, however, great difficulties have been experienced, more especiallyin the production of even shades or colours. Nevertheless, cop-dyeing has,during the last twenty years, made steady progress, and there are at presentmany establishments in which large quantities of cotton are dyed in the great impetus was given to this kind of dyeing by the introduction ofthe direct cotton colours, most of which possess in an eminent degree theproperty of penetrating and dyeing level. It is obvious that only such dyesas are completely soluble in water can be used for the purpose, for if it wereattempted to force such a colouring matter as Alizarin through the cop, themass of cotton would simply act as a filtering medium, and, as a consequence,only a very small proportion of the yarn would be dyed, the rest remainingwhite or at most tinged. The dyeing of yarn in the cop is effected in two different ways. Accord
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdyesanddyeing, bookye
