公开(公告)号：US20180073192A1

公开(公告)日：2018-03-15

申请号：US15701840

申请日：2017-09-12

申请人： INDIGO MILL DESIGNS LLC

发明人： Howard MALPASS ,  Ralph THARPE ,  M. Dean ETHRIDGE

IPC分类号： D06P1/22 ,  D06P5/02

CPC分类号： D06P1/228 ,  D06B1/02 ,  D06B1/14 ,  D06B5/06 ,  D06B19/0005 ,  D06B19/0094 ,  D06B21/00 ,  D06B23/16 ,  D06B23/18 ,  D06P5/02

摘要： Processes and apparatus are disclosed which substantially eliminate the formation of oxidized indigo dye before and during dye application onto a natural fiber yarn or fabric while allowing the leuco-indigo dye molecule to diffuse fully into the natural fibers of the yarn where it can fix to the fibers prior to oxidation (i.e., exposure of the leuco-dyed yarns to oxygen). Indigo dyed textile products (e.g., dyed cotton yarns that may be twill woven to form a denim fabric) exhibit exceptionally high colorfastness as determined by the AATCC Crock Test.