Determination of Tobacco Shred Content in Rejects from Cigarette Maker

In order to control the tobacco shred content in rejects from cigarette maker effectively,on the basis of investigating the basic fluidization characters of cut stem and cut tobacco,a method for determining the tobacco shred content in the rejects by a two-stage winnower was developed,and the preferable air velocities in the two-stage winnower were determined.The samples of different conditions were studied,the results showed that:1) for samples of the same mass,when tobacco shred content ranged from 0.5% to 5.5%,the relative error of test results decreased with the increase of tobacco shred content,though the standard deviation did not change obviously;2) for samples of the same tobacco shred content,when the mass of sample ranged from 100 to 500 g,the standard deviation of test results decreased slightly with the decrease of mass,and the relative error was smaller at the mass range of 200-300 g.