Tree bast fiber and method for processing tree bast

Abstract

Taught is tree bast fiber, along with a method for processing the same, the fiber being a natural textile fiber made of bark of trees except for mulberries and paper mulberries. The length of the fiber is 5 mm-65 mm. The fineness of the fiber is 0.3-2.5D. The intensity of the fiber is 0.275-0.582 N/tex. The breaking elongation rate of the fiber is 3%-7%. The method comprises the steps of peeling, sorting, degumming, skimming, drying, preserving, tanning, grinding, carding, baking, boxing and classifying, and packaging. The textile fiber is produced from a resource abundant in nature. The fiber has similar performance to bast fiber, higher intensity than cotton fiber, good dyeing properties, and wide application prospects. It can be blended with other natural fibers, man-made fibers and recycled fibers to form fiber yarn for various purposes. This method changes waste into a commodity, and brings about great economic and social benefits.

1 . A tree bast fiber, wherein 
 said fiber is a natural textile fiber made from tree bark,    the length of said fiber is 5 mm-65 mm,    the fineness of said fiber is 0.3-2.5 D,    the intensity of said fiber is 0.275-0.582 N/tex, and    the breaking elongation rate of said fiber is 3%-7%.    
   
   
       2 . The tree bast fiber of  claim 1 , wherein said tree bark is bark of branched of perennial trees, fast-growing tree bark, or bush bark.  
   
   
       3 . A tree bast fiber prepared from cotton stalk by a process comprising peeling, skimming, degumming, preserving, cutting, tanning, opening, carding, and baking.  
   
   
       4 . A method for preparing tree bast fiber, comprising sorting, degumming, skimming, drying, preserving, tanning, grinding, carding, and baking; wherein 
 degumming is performed by immersing for 12-48 hours in 20-60° C. alkaline water with a surfactant, and    tanning is performed with a tanning agent comprising a surfactant, plant oil, mineral oil and water.