By Jacob Israel Biegeleisen, E. J. Busenbark, Instructor at The School of Industrial Art, New York

158 MAKE-READY AND PRINTING METHODS

Imitation Frosting – There are also several ways to make imitation frosting effects. Special lacquer pastes are sold for this purpose. Or, extender, with a small amount of varnish and drier added, may be used as a medium. Another medium is prepared by grinding an inert substance, such as whiting, asbestine, magnesium carbonate, or linolith, in a mortar with mixing varnish.

162

TEXTILE PRINTING IN COMMERCIAL WORK

Dyes

Application Chrome Colors – These are used for printing on cotton and low-priced silks and are not very fast. Chrome colors are used only on light backgrounds. The dyestuff is cooked in water to a boil, then a quantity of thick gum tragacanth is added as a thickening agent.

Repitigen or Caustic Colors – These colors are of recent development and are now used on perhaps 90 per cent of the materials used for draperies, handkerchiefs, tablecloths, etc. They are absolutely tub-fast and are very brilliant. Because of the caustic nature of these dyes, the life of the stencil is comparatively short.