Patent ID: 9206544
Filing Date: 2015-12-08
Classification: D01C,D06L,D06M,D21C

Abstract:
1. A method for degumming and fiber-separating ramie, characterized in that the method includes: (1) waste alkali bath step, in which raw fibers are immersed in alkaline wastewater discharged from alkali-hydrogen peroxide bath scouring-bleaching at ambient temperature for 8 h; (2) anaerobic circle step, in which the raw fibers treated in the waste alkali bath are immersed in an anaerobic water pool in a bath ratio of 1:15 to 25, and washed at an ambient temperature for 8 h; (3) aerobic circle step, in which the raw fibers washed in the anaerobic water pool are immersed in an aerobic water pool in a bath ratio of 1:15 to 25, and washed at the ambient temperature for 8 h; (4) alkali-hydrogen peroxide bath scouring-bleaching step, in which the raw fibers treated in the aerobic circle step are immersed in a solution comprising 1 to 10 g/L NaOH and 0 to 2 g/L H (5) fiber-separating and washing step, in which the raw fibers washed in the alkali-hydrogen peroxide bath scouring-bleaching step are treated by a fiber-separating and washing device with a washing time of 4 h, which is performed either by rolling and rubbing manually or in a mechanical way; and (6) bio-enzyme washing step, in which the raw fibers treated in the fiber-separating and washing step are immersed in a solution having a cellulase concentration of 5 to 30 U in a bath ratio of 1:15 to 25 and reacted at a temperature of 55° C. for 2 h to reach the degumming and fiber-separating of the raw ramie fibers.