DYEING METHOD FOR POLYNYTRYLACRYLIC YARNS

摘要

Process comprises colouring, washing and drying. To increase colour uniformity and treatment stability under high temp. and humidity conditions, the drying uses a dryer having a 40 deg.C drying zone. The temp. in the subsequent zones are 50, 60 and 70 deg.C.. The residence time in each zone is 10 minutes, or at least 30 minutes in a tunnel dryer operating at 50 deg.C..