Method for extracting opening fiber fine hemp from banana stalk

The invention discloses a method for extracting fine hemps of opened fibers from stems of bananas, which comprises the steps of: (1) preparing rice water with a Baume degree of 2 degrees to 3 degrees; (2) soaking rough hemps in the rice water and taking out of the water for draining; (3) placing the rough hemps into a mixed solution of 3 percent to 4 percent of sodium hydroxide, 1.3 percent to 1.5 percent of sodium sulfite and 13 percent to 15 percent of sodium carbonate after draining, processing the rough hemps in the condition of high pressure and high temperature, cleaning with water after being cooled and beating; (4) carrying out acid cleaning with glacial acetic acid with a Baume degree of 25 degrees to 30 degrees; (5) soaking with a sodium hypochlorite solution with a pH value of 7 to 8 and a concentration of 1g/L to 2g/L and putting the rough hemps into a mixed solution of 0.4 percent to 0.5 percent of sodium hydroxide, 0.8 percent to 1 percent of emulsifying agent and 8 percent to 10 percent of tea-