FASH 290 Lecture Notes - Lecture 18: Transfer Printing, Screen Printing, Warp And Weft
Document Summary
Fash 290 boardnotes: dyeing and printing -chapter 19. What how when problems keep the basics straight. You can print or dye with a dye, you can print or dye with a pigment. Printing = applying a paste, foam, powder to the surface. Pigment insoluble inorganic compound (color particle) needs a binding agent/glue (no fiber affinity). quick, simple (apply and heat set), economical. Problems are stiffening, crocking (transfer of color through abrading), and fading. 80% of prints (in paste form) also dye with a pigment solution. Dye: organic compound, soluble, affinity for fiber. absorbed by the fiber and bonds with the molecules, high color strength two parts. Chromophore - colored part of molecule auxochrome- provides bonding and solubility sites. Color measurement used in paste or solution form. Dye classifications: acid (anionic, azoic, cationic (basic, developed direct dye (dye + metal {mordant}, disperse, fluorescent dyes. Dyeing: mordant dyes, natural dyes: plant, animal, and mineral sources. Limited colors and availability: reactive, sulfur, vat.
