Dyeing with anionic dyes of nylon skeins partially metal foil covered during moist heat treatment before dyeing

Claim 1

THE PROCESS OF PRODUCING MULTITONE FFECTS ON NYLONCONTAINING YARN, WHICH COMPRISES THE FOLLOWING STEPS: STEP 1. COVERING SELECTED SURFACE AREAS OF A SKEIN OF SAID YARN BY TIGHTLY WRAPPING SPACED PORTIONS OF SAID SKEIN IN A RELAXED STATE WITH METAL FOIL, SO AS TO COMPLETELY ENCLOSE SAID SELECTED SURFACE AREAS OF SAID SKEIN AND PREVENT THEM FROM BEING CONTACTED BY THE MOIST STEAM APPLIED IN STEP 2 OF THE PROCESS WHILE LEAVING UNCOVERED REMAINING SURFACE AREAS OF SAID SKEIN IN A RELAXED STATE; STEP 2, APPLYING MOIST STEAM TO THE ASSEMBLY OF SAID SKEIN OF YARN AND METAL FOIL AT A TEMPERATURE BELOW THE FUSION POINT OF THE NYLON AND ABOVE 212*F., SAID MOIST STEAM BEING APPLIED FOR A TIME INTERVAL AT LEAST SUFFICIENT FOR THE MOIST STEAM TO PENETRATE THE SURFACE OF THE UNCOVERED AREAS OF SAID YARN TO EFFECT SELECTIVE REORIENTATION OF THE NYLON MOLECULES IN SAID UNCOVERED AREAS AND IMPART THERETO A MARKEDLY GREATER AFFINITY FOR DYES CAPABLE OF DYEING NYLON THAN IS PROCESSED BY THE NYLON IN THE COVERED AREAS; STEP 3, REMOVING THE METAL FOIL WRAPPING FROM THE SKEIN OF YARN; AND STEP 4, IMMERSING THE THUS TREATED SKEIN OF YARN, FROM WHICH THE WRAPPING HAS BEEN REMOVED, IN A DYE BATH CONTAINING AN ANIONIC DYE CAPABLE OFDYEING NYLON, THUS IMPARTING DIFFERENT TONAL EFFECTS TO THE AREAS OF THE YARN WHICH HAD BEEN COVERED WITH METAL FOIL AND THE REMAING AREAS.