Effect of Carding Ratio of Jute Finisher Card on Processing Performance and Sliver Quality

摘要

Carding is the heart of the whole spinning process, which causes convert the reeds of jute into a uniform supply of fibrous material which can then be drafted with a little more fiber breakage and provides further opportunity for removal of non-fibrous matter. This action occurs in jute breaker card and finisher card machine between cylinder and worker. Carding ratio is the ratio of surface speed of cylinder and worker. This study has carried out to find a speed range of cylinder and worker to get a suitable carding ratio of finisher card which is appropriate to have best processing performance and sliver quality. 21 lb/100 yards sliver have produce from the 100% Tossa jute at five different carding ratio of finisher card by changing the speed of worker and cylinder. Fiber individualization, parallization, strength, elongation%, tensile modulus, short fiber% and CV% of finisher card sliver have tested. Higher carding ratio ruptures longer fiber and generates additional short fiber, reduce fiber tenacity. In contrary higher carding ratio make the fiber more individual, parallel and thus improve sliver uniformity.