Method of producing dyed glass fiber yarn

Claim 1

AN IMPROVED METHOD OF PRODUCING A MULTICOLORED GLASS FIBER FABRIC COMPRISING BULKING A YARN OF CONTINUOUS GLASS FILAMENTS BY PASSING THE YARN THROUGH A ZONE OF SUFFICIENT TURBULENCE TO SEPARATE THE FILAMENTS SUFFICIENTLY TO PROVIDE AN OPEN STRUCTURE WHICH READILY ACCEPTS COLORING PIGMENT, PASSING THE YARN THROUGH A DISPERSION OF AN INORGANIC PIGMENT, REMOVING EXCESS DISPERSION AND DISTRIBUTING THE DYE UNIFORMLY THROUGHOUT THE YARN BY PASSING THE YARN THROUGH ROLLERS, DRYING THE YARN AT ABOUT 600*F., WEAVING A FABRIC FROM THIS YARN AND AT LEAST ONE OTHER YARN DYED IN THIS MANNER BUT HAVING A DIFFERENT COLOR, HEATING THE FABRIC AT ABOUT 1200*F. TO REMOVE ANY VOLATILE MATERIALS FROM THE FABRIC, TO FUSE THE PIGMENT TO THE GLASS AND TO WEAVE-SEAT THE FABRIC, PASSING THE FABRIC THROUGH A GLASS FABRIC FINISH, DRYING THE FABRIC AT A TEMPERATURE OF ABOUT 320*F., AND PASSING THE FABRIC THROUGH A STEARATO CHROMYL CHLORIDE BATH FOLLOWED BY DRYING ATE ABOUT 340*F. TO PROVIDE A WATER-REPELLENT FINISH ON THE GLASS FABRIC.