たばこ刻の膨こう性測定における試料と容器間の摩擦の影響

Abstract

In order to obtain the influence of the friction between a tobacco shreds' sample and its container wall on the determination of filling capacity, we have constructed a novel device capable of measuring both the friction index (FI) and the filling capacity (FC) of tobacco shreds simultaneously. With the device, the relationship among the “FI” or the “FC” and the levels of four factors were studied experimentally. The factors chosen were the variety of tobacco (Flue-cured V1 and Domestic V2 as typical ones in Japan), the leaf position on a stalk (p), the length of shreds (S) and the moisture content of tobacco (w). The results obtained were as follows:(1) When the “w” increased, the value of “FI” increased, and the “FI” of “V2” was greater than that of “V1”. As compared with these variations of “FI” with “w”, the variation of “FI” with “p” or “S” was still small.(2) The coefficient of variation of “FC” increased, if there was a friction, at every level of any of factors of“p”, “S” and “w” for both “V1” and “V2”.(3) The bias of “FC” caused by the friction changed diversely depending upon the level of every factor of “p”, “S” and “w”, as well as upon the variety of “V1” or “V2”.(4) In conclusion. the “FC” should be measured under the state without any friction between tobacco shreds and its container.