METHOD FOR EXTRACTION OF NATURAL DYE FROM GARDEN BALSAM AND METHOD FOR DYEING OF FIBER PRODUCT USING DYE THEREOF

摘要

PURPOSE: A method for extracting a natural dye by extracting flowers, leaves and stems of garden balsam and then filtering is provided. Whereby, the natural dye gives a brown or orange color and has excellent washfastness. A fiber product is dyed with mordants in an acidic condition using the natural dye. CONSTITUTION: A garden balsam(Impatiens balsamina L.) is extracted in a juice extractor and then residual dregs are separated from the garden balsam juice by filtering at a pressure of 100 to 110kg/cm¬2 in a filter press to produce a pigment component. The obtained pigment solution is adjusted to pH 3 to 5 and then dyed at 40 to 100deg.C for 20 to 50 min by introduction of a degummed and bleached fabric thereto.