POLYGONUM INDIGO DYEING APPARATUS AND POLYGONUM INDIGO DYEING METHOD

摘要

PURPOSE: An indigo dyeing apparatus and an indigo dyeing method are provided to uniformly produce a large amount of dyed fibers, and to save cost and time for dyeing. CONSTITUTION: An indigo dyeing apparatus(100) comprises a vacuum pump(102) and a driving pump(103). The vacuum pump is connected to a dyeing tank, and discharges air from the inside of the dyeing take for reaching a vacuum state. A driving pump is connected to the dyeing tank and allows an indigo dyeing solution inside the dyeing tank of a vacuum state for dyeing thread to flow.