A Process Study of Increasing Natural Dye's Tone Variation from Annatto Tree Seed Dye

Abstract

The aims of this study were to examine silk yarn dyed with annatto tree seeds in terms of the process of tone variation increasing, the color values of the yarn, the color fastness of the dye in terms of fastness to washing, rubbing and light; and the prototype of dyeing process for household industry compared to the lab test.This study was performed by using chemical measurement, wavelength measurement based on CIELAB color system to identify color value, color fastness to washing and light fastness test, and comparing the color value obtained from household dyeing process with the laboratory. Results the best shade multiplication process, Caused by the dyeing process with water to dye the seeds mixed with 0.05% alum. exhibited the color values of silk yarn dyed with annatto seed dye in terms of lightness (L*), green/red (a*) and blue/yellow (b*) were as L* = 68.98-68.99, a* =  27.70 – 27.75 red, Caused by the dyeing process with Fang wood dye mixed with 0.05% alum, followed by alum seed dye mixed with 0.05% alum.