Patent ID: 7624478

Claim:
A method for preparing a cotton stalk bark fiber comprising the steps of: (a) separating cotton stalk bark from the cotton stalk manually or with a mechanical peeler; followed by (b) immersing product obtained in step (a) in 20-60° C. warm acid water for 12-48 hours; followed by (c) immersing product obtained in step (b) in 20-60° C. warm alkaline water with a surfactant for 12-48 hours; followed by (d) immersing product obtained in step (c) in a preserving emulsion; followed by (e) cutting material obtained in step (d); followed by (f) processing material obtained in step (e) with a tanning agent comprising a surfactant, a plant oil, a mineral oil and water; followed by (g) opening fasciculate short fiber obtained in step (f) with a fiber opener; followed by (h) carding; followed by (i) baking.