An acidless re-double-boiling out process has been developed to replace the traditional chemical boiling off of raw hemp, as to obtain the refined ramie.Significant results has been acquired.

• 以去除木质素为主要目的，对传统的原麻化学脱胶工艺进行了改造，采用无酸重二煮的工艺方法制取大麻的精干麻，取得了明显效果。