Abstract:

In order to obtain cotton stalk bark cellulose fiber wit small linear density, according to the structure morphology of cotton stalk bark fiber, the mechanically thinning of cotton stalk bark cellulose fibers was carried out rsing single roller carding, single flat carding and combined roller carding-flat carding method. Experimental results show that cotton stalk bark fibers needs to be added with water and hermetically wet for 12 h before carding. For only roller carding method, the mean fiber length was 39.7 mm and the mean fiber linear density 2.42 tex after carding when the water amount ei 25% base on the fiber weight. For single flat carding method, when the water amount is 15% base on fiber weight the mean diber length is 37.7 mm and the mean diber linear density is 2.2 tex after carding. For the cotton stalk bark cellulose fibers with the water amount of 25% base on the fiber weight, when the combined carding method of two roller carding-one flat carding is used, the mean linear density and mean length of the carded fibers were 1.9 tex and 39.6 mm, respectively, and the mean fell fiber length 15.9 mm and the mean fell fiber linear density is 3 tex.

Key words: cotton stalk bark cellulose fiber, roller carding, flat carding, fiber thinning