. A practical handbook of dyeing and calico-printing. With eleven page-plates, forty-seven specimens of dyed and printed fabrics, and thirty-eight woodcuts . insing in cold water, and next padding, at 700, in a bath made up of 300 litresof a decoction of nut-galls (10 kilos.) and 16 kilos, of alum, quantities whichsuffice for 500 kilos, of cotton ; drying in the stove-heated room at 450, beinghung up there for two days. Chalk Bath.—The dyeing is performed with 10 pieces at a time, with from3 to 4/5 kilos, of madder for each piece ; water, from 1500 to 1800 litres : thebath is gradually but reg
. A practical handbook of dyeing and calico-printing. With eleven page-plates, forty-seven specimens of dyed and printed fabrics, and thirty-eight woodcuts . insing in cold water, and next padding, at 700, in a bath made up of 300 litresof a decoction of nut-galls (10 kilos.) and 16 kilos, of alum, quantities whichsuffice for 500 kilos, of cotton ; drying in the stove-heated room at 450, beinghung up there for two days. Chalk Bath.—The dyeing is performed with 10 pieces at a time, with from3 to 4/5 kilos, of madder for each piece ; water, from 1500 to 1800 litres : thebath is gradually but regularly heated, during 2 J hours, up to the boiling-point,at which it is maintained for a quarter of an hour. After this follows a secondgalling and mordanting, in the same manner just described, and after thatagain a dye-beck precisely similar to the first; followed by the first clearing,in a boiler under pressure, during eight hours, with 6 kilos, of soap and 1*5 * This may be yarn, since it is very frequently dyed Turkey-red. * We may briefly point out the peculiar liability o( Turkey-reds to spontaneous combustion. 326 DYEING AND CALICO Madder. kilos, of carbonate of potassa ; second clearing, under pressure, with 6*5 kilos,of soap and 0*375 grm tin-salt; next, third clearing the same as second;and next a bran-bath. The reader will readily observe that in the process ashere described the oiled goods are not exposed to the bleach-field, and it istherefore apparent that the action of light can be replaced by that of oiled goods are sometimes heaped together in a room heated to 350, carebeing taken to move the goods about so as to prevent their spontaneous com-bustion by a too adtive oxidation of the oil. Turkey-reds are very readily recognised by the peculiar fiery and deep toneof the colour, but if there is any doubt on this subject it is only necessary toimmerse the piece to be tested, for a few moments, in a boiling solution of
Size: 2088px × 1197px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectdyesanddyeing, bookye
