METHOD OF HARDENING STABILITY, BRIGHTNESS MAINTENANCE AND COLOR FASTNESS IMPROVEMENT TO LAUNDERING BY MULTIPLEX PRESSURE CONTROL HEATING OF STAMPING FOIL ARTICLE

摘要

PURPOSE: A method for improving the hardening stability, the glossiness, and the color fastness to washing by a multi-stage pressure-control heating operation in an stamping foil product coloring process is provided to prevent a patterning layer from being escaped in a washing process by performing five times multi-stage heating operations and pressure-control heating operations. CONSTITUTION: The temperature of a boiler is increased to 245 degrees Celsius in order to prepare an adhesive heating operation. The temperature of a drying furnace is multi-heated at 90 degrees Celsius, 120 degrees Celsius, 185 degrees Celsius, 185 degrees Celsius, and 130 degrees Celsius. The wind-speed of hot air is regulated to 10m/sec, 15m/sec, 15m/sec, 15m/sec, and 15m/sec successively according to a multi-heating stage. Pressure-control heating operations are performed successively with the pressure of -0.4psi, -0.2psi, -0.2psi, -0.2psi, and -0.4psi.