Method of heat setting, dyeing and optionally scouring boarded synthetic thermoplastic textiles with superat-mospheric steam

Claim 1

IN THE METHOD OF SETTING AND DYEING TEXTILE ARTICLES MADE OF SYNTHETIC THERMOPLASTIC YARNS CAPABLE OF BEING HEAT-SET TO PREDETERMINED SHAPE AND DYED AT TEMPERATURES WITHIN THE RANGE OF 212*F. TO 330*F., THE STEPS WHICH COMPRISE MOUNTING SAID ARTICLES ON BOARDS CONFORMING TO SAID PREDETERMINED SHAPE, INTRODUCING SAID BOARDED ARTICLES INTO A TREATMENT ZONE CLOSED TO ROOM ATMOSPHERE AND CONTAINING STEAM UNDER SUPERATMOSPHERIC PRESSURE AT A TEMPERATURE BETWEEN 212*F. AND 330*F., MAINTAINING THE ARTICLES IN SAID TREATMENT ZONEAT LEAST UNTIL SAID ARTICLES ARE HEAT-SET TO SAID PREDETERMINED SHAPE, SCOURING THE BOARDED ARTICLES WHILE IN SAID TREATMENT ZONE BY CONTACTING THEM UNTIL CLEAN WITH A LIQUID SCOURING MEDIUM STABLE AT TEMPERATURES WITHIN THE RANGE OF 212*F. AND 330*F. AND CAPABLE OF CLEANSING THE YARNS BEING TREATED, AND DYEING SAID BOARDED ARTICLES WHILE IN SAID TREATMENT ZONE BY CONTACTING THE SAME WITH LIQUID DYEING MEDIUM CAPABLE OF DYEING THE YARN THEREOF UNTIL THE BOARDED ARTICLES ARE DYED TO THE DESIRED COLOR AND MAINTAINING SUBSTANTIALLY CONSTANT SAID STEAM CONDITIONS THROUGHOUT SAID TREATMENT ZONE DURING SETTING, SCOURING AND DYEING OF THE BOARDED ARTICLES THEREIN SO THAT SAID ARTICLES ARE CONTINUOUSLY SUBJECTED TO SUBSTANTIALLY UNIFORM TEMPERATURE WHILE IN THE TREATMENT ZONE.